The main part of UML; it is the last distributed patch for 2.6.7 Removes skas support from the main UML patch; apply or get conflicts. Signed-off-by: Paolo 'Blaisorblade' Giarrusso --- uml-linux-2.6.7-paolo/arch/um/Kconfig | 52 uml-linux-2.6.7-paolo/arch/um/Kconfig_block | 14 uml-linux-2.6.7-paolo/arch/um/Kconfig_net | 70 uml-linux-2.6.7-paolo/arch/um/Makefile | 110 - uml-linux-2.6.7-paolo/arch/um/Makefile-i386 | 23 uml-linux-2.6.7-paolo/arch/um/Makefile-skas | 6 uml-linux-2.6.7-paolo/arch/um/config.release | 1 uml-linux-2.6.7-paolo/arch/um/defconfig | 230 +- uml-linux-2.6.7-paolo/arch/um/drivers/Makefile | 17 uml-linux-2.6.7-paolo/arch/um/drivers/chan_kern.c | 16 uml-linux-2.6.7-paolo/arch/um/drivers/chan_user.c | 100 uml-linux-2.6.7-paolo/arch/um/drivers/cow.h | 41 uml-linux-2.6.7-paolo/arch/um/drivers/cow_kern.c | 630 ++++++ uml-linux-2.6.7-paolo/arch/um/drivers/cow_sys.h | 48 uml-linux-2.6.7-paolo/arch/um/drivers/cow_user.c | 375 +++ uml-linux-2.6.7-paolo/arch/um/drivers/daemon_user.c | 26 uml-linux-2.6.7-paolo/arch/um/drivers/fd.c | 3 uml-linux-2.6.7-paolo/arch/um/drivers/harddog_user.c | 62 uml-linux-2.6.7-paolo/arch/um/drivers/hostaudio_kern.c | 107 - uml-linux-2.6.7-paolo/arch/um/drivers/hostaudio_user.c | 63 uml-linux-2.6.7-paolo/arch/um/drivers/line.c | 152 - uml-linux-2.6.7-paolo/arch/um/drivers/mcast_user.c | 16 uml-linux-2.6.7-paolo/arch/um/drivers/mconsole_kern.c | 140 + uml-linux-2.6.7-paolo/arch/um/drivers/mconsole_user.c | 25 uml-linux-2.6.7-paolo/arch/um/drivers/mmapper_kern.c | 5 uml-linux-2.6.7-paolo/arch/um/drivers/net_kern.c | 89 uml-linux-2.6.7-paolo/arch/um/drivers/net_user.c | 46 uml-linux-2.6.7-paolo/arch/um/drivers/null.c | 1 uml-linux-2.6.7-paolo/arch/um/drivers/port_kern.c | 17 uml-linux-2.6.7-paolo/arch/um/drivers/port_user.c | 31 uml-linux-2.6.7-paolo/arch/um/drivers/pty.c | 22 uml-linux-2.6.7-paolo/arch/um/drivers/slip_user.c | 69 uml-linux-2.6.7-paolo/arch/um/drivers/slirp_user.c | 15 uml-linux-2.6.7-paolo/arch/um/drivers/ssl.c | 49 uml-linux-2.6.7-paolo/arch/um/drivers/stdio_console.c | 54 uml-linux-2.6.7-paolo/arch/um/drivers/tty.c | 4 uml-linux-2.6.7-paolo/arch/um/drivers/ubd_kern.c | 600 ++++- uml-linux-2.6.7-paolo/arch/um/drivers/ubd_user.c | 497 +--- uml-linux-2.6.7-paolo/arch/um/drivers/xterm.c | 21 uml-linux-2.6.7-paolo/arch/um/drivers/xterm_kern.c | 12 uml-linux-2.6.7-paolo/arch/um/dyn.lds.S | 15 uml-linux-2.6.7-paolo/arch/um/include/2_5compat.h | 14 uml-linux-2.6.7-paolo/arch/um/include/irq_kern.h | 28 uml-linux-2.6.7-paolo/arch/um/include/kern_util.h | 11 uml-linux-2.6.7-paolo/arch/um/include/line.h | 4 uml-linux-2.6.7-paolo/arch/um/include/mconsole.h | 6 uml-linux-2.6.7-paolo/arch/um/include/mem.h | 15 uml-linux-2.6.7-paolo/arch/um/include/mem_kern.h | 30 uml-linux-2.6.7-paolo/arch/um/include/mem_user.h | 31 uml-linux-2.6.7-paolo/arch/um/include/os.h | 53 uml-linux-2.6.7-paolo/arch/um/include/signal_user.h | 2 uml-linux-2.6.7-paolo/arch/um/include/skas_ptrace.h | 2 uml-linux-2.6.7-paolo/arch/um/include/sysdep-i386/frame_user.h | 28 uml-linux-2.6.7-paolo/arch/um/include/sysdep-i386/sigcontext.h | 4 uml-linux-2.6.7-paolo/arch/um/include/sysdep-i386/syscalls.h | 59 uml-linux-2.6.7-paolo/arch/um/include/ubd_user.h | 9 uml-linux-2.6.7-paolo/arch/um/include/um_uaccess.h | 51 uml-linux-2.6.7-paolo/arch/um/include/user.h | 1 uml-linux-2.6.7-paolo/arch/um/include/user_util.h | 7 uml-linux-2.6.7-paolo/arch/um/kernel/Makefile | 44 uml-linux-2.6.7-paolo/arch/um/kernel/config.c.in | 4 uml-linux-2.6.7-paolo/arch/um/kernel/exec_kern.c | 5 uml-linux-2.6.7-paolo/arch/um/kernel/frame.c | 3 uml-linux-2.6.7-paolo/arch/um/kernel/frame_kern.c | 6 uml-linux-2.6.7-paolo/arch/um/kernel/helper.c | 55 uml-linux-2.6.7-paolo/arch/um/kernel/init_task.c | 17 uml-linux-2.6.7-paolo/arch/um/kernel/initrd_user.c | 13 uml-linux-2.6.7-paolo/arch/um/kernel/irq.c | 105 - uml-linux-2.6.7-paolo/arch/um/kernel/irq_user.c | 37 uml-linux-2.6.7-paolo/arch/um/kernel/ksyms.c | 53 uml-linux-2.6.7-paolo/arch/um/kernel/mem.c | 657 ------ uml-linux-2.6.7-paolo/arch/um/kernel/mem_user.c | 230 +- uml-linux-2.6.7-paolo/arch/um/kernel/physmem.c | 468 ++++ uml-linux-2.6.7-paolo/arch/um/kernel/process.c | 20 uml-linux-2.6.7-paolo/arch/um/kernel/process_kern.c | 45 uml-linux-2.6.7-paolo/arch/um/kernel/ptrace.c | 23 uml-linux-2.6.7-paolo/arch/um/kernel/reboot.c | 2 uml-linux-2.6.7-paolo/arch/um/kernel/sigio_kern.c | 7 uml-linux-2.6.7-paolo/arch/um/kernel/sigio_user.c | 96 uml-linux-2.6.7-paolo/arch/um/kernel/signal_kern.c | 60 uml-linux-2.6.7-paolo/arch/um/kernel/skas/Makefile | 24 uml-linux-2.6.7-paolo/arch/um/kernel/skas/include/mode.h | 6 uml-linux-2.6.7-paolo/arch/um/kernel/skas/include/skas.h | 4 uml-linux-2.6.7-paolo/arch/um/kernel/skas/include/uaccess.h | 207 -- uml-linux-2.6.7-paolo/arch/um/kernel/skas/mem_user.c | 32 uml-linux-2.6.7-paolo/arch/um/kernel/skas/mmu.c | 8 uml-linux-2.6.7-paolo/arch/um/kernel/skas/process.c | 107 - uml-linux-2.6.7-paolo/arch/um/kernel/skas/process_kern.c | 26 uml-linux-2.6.7-paolo/arch/um/kernel/skas/sys-i386/Makefile | 2 uml-linux-2.6.7-paolo/arch/um/kernel/skas/sys-i386/sigcontext.c | 15 uml-linux-2.6.7-paolo/arch/um/kernel/skas/syscall_kern.c | 2 uml-linux-2.6.7-paolo/arch/um/kernel/skas/syscall_user.c | 4 uml-linux-2.6.7-paolo/arch/um/kernel/skas/trap_user.c | 6 uml-linux-2.6.7-paolo/arch/um/kernel/skas/uaccess.c | 219 ++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/util/Makefile | 7 uml-linux-2.6.7-paolo/arch/um/kernel/skas/util/mk_ptregs.c | 1 uml-linux-2.6.7-paolo/arch/um/kernel/smp.c | 63 uml-linux-2.6.7-paolo/arch/um/kernel/sys_call_table.c | 686 ++---- uml-linux-2.6.7-paolo/arch/um/kernel/syscall_kern.c | 64 uml-linux-2.6.7-paolo/arch/um/kernel/sysrq.c | 5 uml-linux-2.6.7-paolo/arch/um/kernel/tempfile.c | 7 uml-linux-2.6.7-paolo/arch/um/kernel/time.c | 69 uml-linux-2.6.7-paolo/arch/um/kernel/time_kern.c | 77 uml-linux-2.6.7-paolo/arch/um/kernel/trap_kern.c | 58 uml-linux-2.6.7-paolo/arch/um/kernel/trap_user.c | 9 uml-linux-2.6.7-paolo/arch/um/kernel/tt/Makefile | 6 uml-linux-2.6.7-paolo/arch/um/kernel/tt/exec_kern.c | 7 uml-linux-2.6.7-paolo/arch/um/kernel/tt/include/mode.h | 2 uml-linux-2.6.7-paolo/arch/um/kernel/tt/include/uaccess.h | 60 uml-linux-2.6.7-paolo/arch/um/kernel/tt/mem_user.c | 7 uml-linux-2.6.7-paolo/arch/um/kernel/tt/process_kern.c | 82 uml-linux-2.6.7-paolo/arch/um/kernel/tt/ptproxy/Makefile | 2 uml-linux-2.6.7-paolo/arch/um/kernel/tt/ptproxy/proxy.c | 25 uml-linux-2.6.7-paolo/arch/um/kernel/tt/ptproxy/sysdep.c | 1 uml-linux-2.6.7-paolo/arch/um/kernel/tt/ptproxy/wait.c | 12 uml-linux-2.6.7-paolo/arch/um/kernel/tt/sys-i386/Makefile | 2 uml-linux-2.6.7-paolo/arch/um/kernel/tt/syscall_kern.c | 2 uml-linux-2.6.7-paolo/arch/um/kernel/tt/syscall_user.c | 4 uml-linux-2.6.7-paolo/arch/um/kernel/tt/tlb.c | 1 uml-linux-2.6.7-paolo/arch/um/kernel/tt/tracer.c | 27 uml-linux-2.6.7-paolo/arch/um/kernel/tt/uaccess.c | 73 uml-linux-2.6.7-paolo/arch/um/kernel/tt/uaccess_user.c | 22 uml-linux-2.6.7-paolo/arch/um/kernel/tt/unmap.c | 3 uml-linux-2.6.7-paolo/arch/um/kernel/tty_log.c | 136 + uml-linux-2.6.7-paolo/arch/um/kernel/uaccess_user.c | 2 uml-linux-2.6.7-paolo/arch/um/kernel/um_arch.c | 76 uml-linux-2.6.7-paolo/arch/um/kernel/umid.c | 80 uml-linux-2.6.7-paolo/arch/um/kernel/user_util.c | 15 uml-linux-2.6.7-paolo/arch/um/main.c | 7 uml-linux-2.6.7-paolo/arch/um/os-Linux/Makefile | 6 uml-linux-2.6.7-paolo/arch/um/os-Linux/drivers/ethertap_kern.c | 1 uml-linux-2.6.7-paolo/arch/um/os-Linux/drivers/ethertap_user.c | 56 uml-linux-2.6.7-paolo/arch/um/os-Linux/drivers/tuntap_user.c | 57 uml-linux-2.6.7-paolo/arch/um/os-Linux/file.c | 450 +++- uml-linux-2.6.7-paolo/arch/um/os-Linux/process.c | 58 uml-linux-2.6.7-paolo/arch/um/os-Linux/tty.c | 10 uml-linux-2.6.7-paolo/arch/um/os-Linux/user_syms.c | 88 uml-linux-2.6.7-paolo/arch/um/sys-i386/Makefile | 24 uml-linux-2.6.7-paolo/arch/um/sys-i386/bugs.c | 140 + uml-linux-2.6.7-paolo/arch/um/sys-i386/fault.c | 16 uml-linux-2.6.7-paolo/arch/um/sys-i386/ptrace_user.c | 8 uml-linux-2.6.7-paolo/arch/um/sys-i386/time.c | 24 uml-linux-2.6.7-paolo/arch/um/sys-i386/util/Makefile | 15 uml-linux-2.6.7-paolo/arch/um/sys-i386/util/mk_sc.c | 1 uml-linux-2.6.7-paolo/arch/um/sys-ia64/Makefile | 15 uml-linux-2.6.7-paolo/arch/um/sys-ppc/Makefile | 11 uml-linux-2.6.7-paolo/arch/um/uml.lds.S | 10 uml-linux-2.6.7-paolo/arch/um/util/Makefile | 27 uml-linux-2.6.7-paolo/arch/um/util/mk_constants_kern.c | 4 uml-linux-2.6.7-paolo/fs/Makefile | 2 uml-linux-2.6.7-paolo/fs/hostfs/Makefile | 26 uml-linux-2.6.7-paolo/fs/hostfs/hostfs.h | 79 uml-linux-2.6.7-paolo/fs/hostfs/hostfs_kern.c | 1008 ++++++++++ uml-linux-2.6.7-paolo/fs/hostfs/hostfs_user.c | 361 +++ uml-linux-2.6.7-paolo/fs/hppfs/Makefile | 19 uml-linux-2.6.7-paolo/fs/hppfs/hppfs_kern.c | 811 ++++++++ uml-linux-2.6.7-paolo/include/asm-um/archparam-i386.h | 89 uml-linux-2.6.7-paolo/include/asm-um/common.lds.S | 48 uml-linux-2.6.7-paolo/include/asm-um/cpufeature.h | 6 uml-linux-2.6.7-paolo/include/asm-um/current.h | 6 uml-linux-2.6.7-paolo/include/asm-um/dma-mapping.h | 120 + uml-linux-2.6.7-paolo/include/asm-um/elf.h | 13 uml-linux-2.6.7-paolo/include/asm-um/fixmap.h | 8 uml-linux-2.6.7-paolo/include/asm-um/irq.h | 18 uml-linux-2.6.7-paolo/include/asm-um/local.h | 6 uml-linux-2.6.7-paolo/include/asm-um/module-generic.h | 6 uml-linux-2.6.7-paolo/include/asm-um/module-i386.h | 13 uml-linux-2.6.7-paolo/include/asm-um/page.h | 43 uml-linux-2.6.7-paolo/include/asm-um/pgtable.h | 111 - uml-linux-2.6.7-paolo/include/asm-um/processor-generic.h | 43 uml-linux-2.6.7-paolo/include/asm-um/processor-i386.h | 4 uml-linux-2.6.7-paolo/include/asm-um/sections.h | 7 uml-linux-2.6.7-paolo/include/asm-um/smp.h | 2 uml-linux-2.6.7-paolo/include/asm-um/system-generic.h | 9 uml-linux-2.6.7-paolo/include/asm-um/system-i386.h | 31 uml-linux-2.6.7-paolo/include/asm-um/thread_info.h | 16 uml-linux-2.6.7-paolo/include/asm-um/timex.h | 2 uml-linux-2.6.7-paolo/include/asm-um/uaccess.h | 2 uml-linux-2.6.7-paolo/include/asm-um/unistd.h | 5 uml-linux-2.6.7-paolo/include/linux/gfp.h | 5 uml-linux-2.6.7-paolo/include/linux/time.h | 2 uml-linux-2.6.7-paolo/mm/page_alloc.c | 4 uml-linux-2.6.7/arch/um/kernel/user_syms.c | 113 - uml-linux-2.6.7/arch/um/sys-i386/extable.c | 30 uml-linux-2.6.7/include/asm-um/smplock.h | 6 uml-linux-2.6.7/include/asm-um/spinlock.h | 10 186 files changed, 8707 insertions(+), 3939 deletions(-) diff -puN arch/um/config.release~Main-uml-patch-no-skas arch/um/config.release --- uml-linux-2.6.7/arch/um/config.release~Main-uml-patch-no-skas 2004-06-29 21:02:55.437331000 +0200 +++ uml-linux-2.6.7-paolo/arch/um/config.release 2004-06-29 21:02:55.704290416 +0200 @@ -228,7 +228,6 @@ CONFIG_ROMFS_FS=m CONFIG_EXT2_FS=y CONFIG_SYSV_FS=m CONFIG_UDF_FS=m -# CONFIG_UDF_RW is not set CONFIG_UFS_FS=m # CONFIG_UFS_FS_WRITE is not set diff -puN arch/um/defconfig~Main-uml-patch-no-skas arch/um/defconfig --- uml-linux-2.6.7/arch/um/defconfig~Main-uml-patch-no-skas 2004-06-29 21:02:55.438330848 +0200 +++ uml-linux-2.6.7-paolo/arch/um/defconfig 2004-06-29 21:02:55.705290264 +0200 @@ -3,29 +3,19 @@ # CONFIG_USERMODE=y CONFIG_MMU=y -CONFIG_SWAP=y CONFIG_UID16=y CONFIG_RWSEM_GENERIC_SPINLOCK=y -CONFIG_CONFIG_LOG_BUF_SHIFT=14 # -# Code maturity level options -# -CONFIG_EXPERIMENTAL=y - -# -# General Setup +# UML-specific options # CONFIG_MODE_TT=y CONFIG_MODE_SKAS=y CONFIG_NET=y -CONFIG_SYSVIPC=y -CONFIG_BSD_PROCESS_ACCT=y -CONFIG_SYSCTL=y -CONFIG_BINFMT_AOUT=y CONFIG_BINFMT_ELF=y CONFIG_BINFMT_MISC=y CONFIG_HOSTFS=y +CONFIG_HPPFS=y CONFIG_MCONSOLE=y CONFIG_MAGIC_SYSRQ=y # CONFIG_HOST_2G_2G is not set @@ -36,12 +26,43 @@ CONFIG_KERNEL_HALF_GIGS=1 # CONFIG_HIGHMEM is not set CONFIG_PROC_MM=y CONFIG_KERNEL_STACK_ORDER=2 +CONFIG_UML_REAL_TIME_CLOCK=y + +# +# Code maturity level options +# +CONFIG_EXPERIMENTAL=y +CONFIG_CLEAN_COMPILE=y +CONFIG_STANDALONE=y +CONFIG_BROKEN_ON_SMP=y + +# +# General setup +# +CONFIG_SWAP=y +CONFIG_SYSVIPC=y +CONFIG_BSD_PROCESS_ACCT=y +CONFIG_SYSCTL=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_HOTPLUG is not set +# CONFIG_IKCONFIG is not set +# CONFIG_EMBEDDED is not set +CONFIG_KALLSYMS=y +CONFIG_FUTEX=y +CONFIG_EPOLL=y +CONFIG_IOSCHED_NOOP=y +CONFIG_IOSCHED_AS=y +CONFIG_IOSCHED_DEADLINE=y +# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set # # Loadable module support # -CONFIG_MODULES=y -# CONFIG_KMOD is not set +# CONFIG_MODULES is not set + +# +# Generic Driver Options +# # # Character Devices @@ -69,6 +90,7 @@ CONFIG_HOSTAUDIO=y # CONFIG_BLK_DEV_UBD=y # CONFIG_BLK_DEV_UBD_SYNC is not set +CONFIG_BLK_DEV_COW_COMMON=y CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_NBD=y CONFIG_BLK_DEV_RAM=y @@ -78,7 +100,7 @@ CONFIG_BLK_DEV_INITRD=y CONFIG_NETDEVICES=y # -# Network Devices +# UML Network Devices # CONFIG_UML_NET=y CONFIG_UML_NET_ETHERTAP=y @@ -88,22 +110,6 @@ CONFIG_UML_NET_DAEMON=y CONFIG_UML_NET_MCAST=y # CONFIG_UML_NET_PCAP is not set CONFIG_UML_NET_SLIRP=y -CONFIG_DUMMY=y -# CONFIG_BONDING is not set -# CONFIG_EQUALIZER is not set -CONFIG_TUN=y -# CONFIG_ETHERTAP is not set -CONFIG_PPP=y -# CONFIG_PPP_MULTILINK is not set -# CONFIG_PPP_ASYNC is not set -# CONFIG_PPP_SYNC_TTY is not set -# CONFIG_PPP_DEFLATE is not set -# CONFIG_PPP_BSDCOMP is not set -# CONFIG_PPPOE is not set -CONFIG_SLIP=y -# CONFIG_SLIP_COMPRESSED is not set -# CONFIG_SLIP_SMART is not set -# CONFIG_SLIP_MODE_SLIP6 is not set # # Networking support @@ -115,8 +121,6 @@ CONFIG_SLIP=y CONFIG_PACKET=y CONFIG_PACKET_MMAP=y # CONFIG_NETLINK_DEV is not set -# CONFIG_NETFILTER is not set -# CONFIG_FILTER is not set CONFIG_UNIX=y # CONFIG_NET_KEY is not set CONFIG_INET=y @@ -130,8 +134,11 @@ CONFIG_INET=y # CONFIG_SYN_COOKIES is not set # CONFIG_INET_AH is not set # CONFIG_INET_ESP is not set -# CONFIG_XFRM_USER is not set +# CONFIG_INET_IPCOMP is not set # CONFIG_IPV6 is not set +# CONFIG_DECNET is not set +# CONFIG_BRIDGE is not set +# CONFIG_NETFILTER is not set # # SCTP Configuration (EXPERIMENTAL) @@ -140,9 +147,9 @@ CONFIG_IPV6_SCTP__=y # CONFIG_IP_SCTP is not set # CONFIG_ATM is not set # CONFIG_VLAN_8021Q is not set -# CONFIG_LLC is not set -# CONFIG_DECNET is not set -# CONFIG_BRIDGE is not set +# CONFIG_LLC2 is not set +# CONFIG_IPX is not set +# CONFIG_ATALK is not set # CONFIG_X25 is not set # CONFIG_LAPB is not set # CONFIG_NET_DIVERT is not set @@ -160,6 +167,10 @@ CONFIG_IPV6_SCTP__=y # Network testing # # CONFIG_NET_PKTGEN is not set +CONFIG_DUMMY=y +# CONFIG_BONDING is not set +# CONFIG_EQUALIZER is not set +CONFIG_TUN=y # # Ethernet (10 or 100Mbit) @@ -171,12 +182,28 @@ CONFIG_IPV6_SCTP__=y # # +# Ethernet (10000 Mbit) +# +CONFIG_PPP=y +# CONFIG_PPP_MULTILINK is not set +# CONFIG_PPP_FILTER is not set +# CONFIG_PPP_ASYNC is not set +# CONFIG_PPP_SYNC_TTY is not set +# CONFIG_PPP_DEFLATE is not set +# CONFIG_PPP_BSDCOMP is not set +# CONFIG_PPPOE is not set +CONFIG_SLIP=y +# CONFIG_SLIP_COMPRESSED is not set +# CONFIG_SLIP_SMART is not set +# CONFIG_SLIP_MODE_SLIP6 is not set + +# # Wireless LAN (non-hamradio) # # CONFIG_NET_RADIO is not set # -# Token Ring devices (depends on LLC=y) +# Token Ring devices # # CONFIG_SHAPER is not set @@ -186,68 +213,100 @@ CONFIG_IPV6_SCTP__=y # CONFIG_WAN is not set # +# Amateur Radio support +# +# CONFIG_HAMRADIO is not set + +# +# IrDA (infrared) support +# +# CONFIG_IRDA is not set + +# +# Bluetooth support +# +# CONFIG_BT is not set + +# # File systems # +CONFIG_EXT2_FS=y +# CONFIG_EXT2_FS_XATTR is not set +# CONFIG_EXT3_FS is not set +# CONFIG_JBD is not set +CONFIG_REISERFS_FS=y +# CONFIG_REISERFS_CHECK is not set +# CONFIG_REISERFS_PROC_INFO is not set +# CONFIG_JFS_FS is not set +# CONFIG_XFS_FS is not set +CONFIG_MINIX_FS=y +# CONFIG_ROMFS_FS is not set CONFIG_QUOTA=y # CONFIG_QFMT_V1 is not set # CONFIG_QFMT_V2 is not set CONFIG_QUOTACTL=y -CONFIG_AUTOFS_FS=m -CONFIG_AUTOFS4_FS=m -CONFIG_REISERFS_FS=m -# CONFIG_REISERFS_CHECK is not set -# CONFIG_REISERFS_PROC_INFO is not set +CONFIG_AUTOFS_FS=y +CONFIG_AUTOFS4_FS=y + +# +# CD-ROM/DVD Filesystems +# +CONFIG_ISO9660_FS=y +# CONFIG_JOLIET is not set +# CONFIG_ZISOFS is not set +# CONFIG_UDF_FS is not set + +# +# DOS/FAT/NT Filesystems +# +CONFIG_FAT_FS=y +CONFIG_MSDOS_FS=y +CONFIG_VFAT_FS=y +# CONFIG_NTFS_FS is not set + +# +# Pseudo filesystems +# +CONFIG_PROC_FS=y +CONFIG_PROC_KCORE=y +CONFIG_DEVFS_FS=y +CONFIG_DEVFS_MOUNT=y +# CONFIG_DEVFS_DEBUG is not set +# CONFIG_DEVPTS_FS_XATTR is not set +CONFIG_TMPFS=y +# CONFIG_HUGETLB_PAGE is not set +CONFIG_RAMFS=y + +# +# Miscellaneous filesystems +# # CONFIG_ADFS_FS is not set # CONFIG_AFFS_FS is not set # CONFIG_HFS_FS is not set +# CONFIG_HFSPLUS_FS is not set # CONFIG_BEFS_FS is not set # CONFIG_BFS_FS is not set -# CONFIG_EXT3_FS is not set -# CONFIG_JBD is not set -CONFIG_FAT_FS=m -CONFIG_MSDOS_FS=m -CONFIG_VFAT_FS=m # CONFIG_EFS_FS is not set CONFIG_JFFS_FS=y CONFIG_JFFS_FS_VERBOSE=0 -CONFIG_JFFS_PROC_FS=y # CONFIG_JFFS2_FS is not set # CONFIG_CRAMFS is not set -# CONFIG_TMPFS is not set -CONFIG_RAMFS=y -CONFIG_ISO9660_FS=m -# CONFIG_JOLIET is not set -# CONFIG_ZISOFS is not set -# CONFIG_JFS_FS is not set -CONFIG_MINIX_FS=m # CONFIG_VXFS_FS is not set -# CONFIG_NTFS_FS is not set # CONFIG_HPFS_FS is not set -CONFIG_PROC_FS=y -CONFIG_DEVFS_FS=y -CONFIG_DEVFS_MOUNT=y -# CONFIG_DEVFS_DEBUG is not set -CONFIG_DEVPTS_FS=y # CONFIG_QNX4FS_FS is not set -# CONFIG_ROMFS_FS is not set -CONFIG_EXT2_FS=y -# CONFIG_EXT2_FS_XATTR is not set # CONFIG_SYSV_FS is not set -# CONFIG_UDF_FS is not set # CONFIG_UFS_FS is not set -# CONFIG_XFS_FS is not set # # Network File Systems # -# CONFIG_CODA_FS is not set -# CONFIG_INTERMEZZO_FS is not set # CONFIG_NFS_FS is not set # CONFIG_NFSD is not set # CONFIG_EXPORTFS is not set -# CONFIG_CIFS is not set # CONFIG_SMB_FS is not set +# CONFIG_CIFS is not set # CONFIG_NCP_FS is not set +# CONFIG_CODA_FS is not set # CONFIG_AFS_FS is not set # @@ -255,11 +314,11 @@ CONFIG_EXT2_FS=y # # CONFIG_PARTITION_ADVANCED is not set CONFIG_MSDOS_PARTITION=y -CONFIG_NLS=y # # Native Language Support # +CONFIG_NLS=y CONFIG_NLS_DEFAULT="iso8859-1" # CONFIG_NLS_CODEPAGE_437 is not set # CONFIG_NLS_CODEPAGE_737 is not set @@ -317,28 +376,7 @@ CONFIG_NLS_DEFAULT="iso8859-1" # # SCSI support # -CONFIG_SCSI=y -CONFIG_GENERIC_ISA_DMA=y - -# -# SCSI support type (disk, tape, CD-ROM) -# -CONFIG_BLK_DEV_SD=y -CONFIG_SD_EXTRA_DEVS=40 -CONFIG_CHR_DEV_ST=y -CONFIG_BLK_DEV_SR=y -CONFIG_BLK_DEV_SR_VENDOR=y -CONFIG_SR_EXTRA_DEVS=2 -CONFIG_CHR_DEV_SG=y - -# -# Some SCSI devices (e.g. CD jukebox) support multiple LUNs -# -CONFIG_SCSI_DEBUG_QUEUES=y -CONFIG_SCSI_MULTI_LUN=y -CONFIG_SCSI_CONSTANTS=y -CONFIG_SCSI_LOGGING=y -CONFIG_SCSI_DEBUG=y +# CONFIG_SCSI is not set # # Multi-device support (RAID and LVM) @@ -360,6 +398,7 @@ CONFIG_MTD_CHAR=y CONFIG_MTD_BLOCK=y # CONFIG_FTL is not set # CONFIG_NFTL is not set +# CONFIG_INFTL is not set # # RAM/ROM/Flash chip drivers @@ -374,20 +413,21 @@ CONFIG_MTD_BLOCK=y # # Mapping drivers for chip access # +# CONFIG_MTD_COMPLEX_MAPPINGS is not set # # Self-contained MTD device drivers # # CONFIG_MTD_SLRAM is not set # CONFIG_MTD_MTDRAM is not set -CONFIG_MTD_BLKMTD=m +CONFIG_MTD_BLKMTD=y # # Disk-On-Chip Device Drivers # -# CONFIG_MTD_DOC1000 is not set # CONFIG_MTD_DOC2000 is not set # CONFIG_MTD_DOC2001 is not set +# CONFIG_MTD_DOC2001PLUS is not set # # NAND Flash Device Drivers diff -puN arch/um/drivers/chan_kern.c~Main-uml-patch-no-skas arch/um/drivers/chan_kern.c --- uml-linux-2.6.7/arch/um/drivers/chan_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.440330544 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/chan_kern.c 2004-06-29 21:02:55.705290264 +0200 @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include "chan_kern.h" @@ -265,6 +266,11 @@ static int one_chan_config_string(struct { int n = 0; + if(chan == NULL){ + CONFIG_CHUNK(str, size, n, "none", 1); + return(n); + } + CONFIG_CHUNK(str, size, n, chan->ops->type, 0); if(chan->dev == NULL){ @@ -420,7 +426,8 @@ int parse_chan_pair(char *str, struct li INIT_LIST_HEAD(chans); } - if((out = strchr(str, ',')) != NULL){ + out = strchr(str, ','); + if(out != NULL){ in = str; *out = '\0'; out++; @@ -475,12 +482,15 @@ void chan_interrupt(struct list_head *ch goto out; } err = chan->ops->read(chan->fd, &c, chan->data); - if(err > 0) tty_receive_char(tty, c); + if(err > 0) + tty_receive_char(tty, c); } while(err > 0); + if(err == 0) reactivate_fd(chan->fd, irq); if(err == -EIO){ if(chan->primary){ - if(tty != NULL) tty_hangup(tty); + if(tty != NULL) + tty_hangup(tty); line_disable(dev, irq); close_chan(chans); free_chan(chans); diff -puN arch/um/drivers/chan_user.c~Main-uml-patch-no-skas arch/um/drivers/chan_user.c --- uml-linux-2.6.7/arch/um/drivers/chan_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.441330392 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/chan_user.c 2004-06-29 21:02:55.706290112 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -7,7 +7,6 @@ #include #include #include -#include #include #include #include @@ -24,29 +23,27 @@ void generic_close(int fd, void *unused) { - close(fd); + os_close_file(fd); } int generic_read(int fd, char *c_out, void *unused) { int n; - n = read(fd, c_out, sizeof(*c_out)); - if(n < 0){ - if(errno == EAGAIN) return(0); - return(-errno); - } - else if(n == 0) return(-EIO); - return(1); + n = os_read_file(fd, c_out, sizeof(*c_out)); + + if(n == -EAGAIN) + return(0); + else if(n == 0) + return(-EIO); + return(n); } +/* XXX Trivial wrapper around os_write_file */ + int generic_write(int fd, const char *buf, int n, void *unused) { - int count; - - count = write(fd, buf, n); - if(count < 0) return(-errno); - return(count); + return(os_write_file(fd, buf, n)); } int generic_console_write(int fd, const char *buf, int n, void *unused) @@ -68,15 +65,18 @@ int generic_console_write(int fd, const int generic_window_size(int fd, void *unused, unsigned short *rows_out, unsigned short *cols_out) { - struct winsize size; - int ret = 0; + int rows, cols; + int ret; + + ret = os_window_size(fd, &rows, &cols); + if(ret < 0) + return(ret); + + ret = ((*rows_out != rows) || (*cols_out != cols)); + + *rows_out = rows; + *cols_out = cols; - if(ioctl(fd, TIOCGWINSZ, &size) == 0){ - ret = ((*rows_out != size.ws_row) || - (*cols_out != size.ws_col)); - *rows_out = size.ws_row; - *cols_out = size.ws_col; - } return(ret); } @@ -100,14 +100,16 @@ static int winch_thread(void *arg) struct winch_data *data = arg; sigset_t sigs; int pty_fd, pipe_fd; + int count, err; char c = 1; - close(data->close_me); + os_close_file(data->close_me); pty_fd = data->pty_fd; pipe_fd = data->pipe_fd; - if(write(pipe_fd, &c, sizeof(c)) != sizeof(c)) + count = os_write_file(pipe_fd, &c, sizeof(c)); + if(count != sizeof(c)) printk("winch_thread : failed to write synchronization " - "byte, errno = %d\n", errno); + "byte, err = %d\n", -count); signal(SIGWINCH, winch_handler); sigfillset(&sigs); @@ -123,26 +125,24 @@ static int winch_thread(void *arg) exit(1); } - if(ioctl(pty_fd, TIOCSCTTY, 0) < 0){ - printk("winch_thread : TIOCSCTTY failed, errno = %d\n", errno); - exit(1); - } - if(tcsetpgrp(pty_fd, os_getpid()) < 0){ - printk("winch_thread : tcsetpgrp failed, errno = %d\n", errno); + err = os_new_tty_pgrp(pty_fd, os_getpid()); + if(err < 0){ + printk("winch_thread : new_tty_pgrp failed, err = %d\n", -err); exit(1); } - if(read(pipe_fd, &c, sizeof(c)) != sizeof(c)) + count = os_read_file(pipe_fd, &c, sizeof(c)); + if(count != sizeof(c)) printk("winch_thread : failed to read synchronization byte, " - "errno = %d\n", errno); + "err = %d\n", -count); while(1){ pause(); - if(write(pipe_fd, &c, sizeof(c)) != sizeof(c)){ - printk("winch_thread : write failed, errno = %d\n", - errno); - } + count = os_write_file(pipe_fd, &c, sizeof(c)); + if(count != sizeof(c)) + printk("winch_thread : write failed, err = %d\n", + -count); } } @@ -154,8 +154,8 @@ static int winch_tramp(int fd, void *dev char c; err = os_pipe(fds, 1, 1); - if(err){ - printk("winch_tramp : os_pipe failed, errno = %d\n", -err); + if(err < 0){ + printk("winch_tramp : os_pipe failed, err = %d\n", -err); return(err); } @@ -168,12 +168,12 @@ static int winch_tramp(int fd, void *dev return(pid); } - close(fds[1]); + os_close_file(fds[1]); *fd_out = fds[0]; - n = read(fds[0], &c, sizeof(c)); + n = os_read_file(fds[0], &c, sizeof(c)); if(n != sizeof(c)){ printk("winch_tramp : failed to read synchronization byte\n"); - printk("read returned %d, errno = %d\n", n, errno); + printk("read failed, err = %d\n", -n); printk("fd %d will not support SIGWINCH\n", fd); *fd_out = -1; } @@ -183,20 +183,24 @@ static int winch_tramp(int fd, void *dev void register_winch(int fd, void *device_data) { int pid, thread, thread_fd; + int count; char c = 1; - if(!isatty(fd)) return; + if(!isatty(fd)) + return; pid = tcgetpgrp(fd); - if(!CHOOSE_MODE(is_tracer_winch(pid, fd, device_data), 0) && - (pid == -1)){ + if(!CHOOSE_MODE_PROC(is_tracer_winch, is_skas_winch, pid, fd, + device_data) && (pid == -1)){ thread = winch_tramp(fd, device_data, &thread_fd); if(fd != -1){ register_winch_irq(thread_fd, fd, thread, device_data); - if(write(thread_fd, &c, sizeof(c)) != sizeof(c)) + count = os_write_file(thread_fd, &c, sizeof(c)); + if(count != sizeof(c)) printk("register_winch : failed to write " - "synchronization byte\n"); + "synchronization byte, err = %d\n", + -count); } } } diff -puN /dev/null arch/um/drivers/cow.h --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/drivers/cow.h 2004-06-29 21:02:55.706290112 +0200 @@ -0,0 +1,41 @@ +#ifndef __COW_H__ +#define __COW_H__ + +#include + +#if __BYTE_ORDER == __BIG_ENDIAN +# define ntohll(x) (x) +# define htonll(x) (x) +#elif __BYTE_ORDER == __LITTLE_ENDIAN +# define ntohll(x) bswap_64(x) +# define htonll(x) bswap_64(x) +#else +#error "__BYTE_ORDER not defined" +#endif + +extern int init_cow_file(int fd, char *cow_file, char *backing_file, + int sectorsize, int alignment, int *bitmap_offset_out, + unsigned long *bitmap_len_out, int *data_offset_out); + +extern int file_reader(__u64 offset, char *buf, int len, void *arg); +extern int read_cow_header(int (*reader)(__u64, char *, int, void *), + void *arg, __u32 *version_out, + char **backing_file_out, time_t *mtime_out, + __u64 *size_out, int *sectorsize_out, + __u32 *align_out, int *bitmap_offset_out); + +extern int write_cow_header(char *cow_file, int fd, char *backing_file, + int sectorsize, int alignment, long long *size); + +extern void cow_sizes(int version, __u64 size, int sectorsize, int align, + int bitmap_offset, unsigned long *bitmap_len_out, + int *data_offset_out); + +#endif + +/* + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN /dev/null arch/um/drivers/cow_kern.c --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/drivers/cow_kern.c 2004-06-29 21:02:55.707289960 +0200 @@ -0,0 +1,630 @@ +#define COW_MAJOR 60 +#define MAJOR_NR COW_MAJOR + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "2_5compat.h" +#include "cow.h" +#include "ubd_user.h" + +#define COW_SHIFT 4 + +struct cow { + int count; + char *cow_path; + dev_t cow_dev; + struct block_device *cow_bdev; + char *backing_path; + dev_t backing_dev; + struct block_device *backing_bdev; + int sectorsize; + unsigned long *bitmap; + unsigned long bitmap_len; + int bitmap_offset; + int data_offset; + devfs_handle_t devfs; + struct semaphore sem; + struct semaphore io_sem; + atomic_t working; + spinlock_t io_lock; + struct buffer_head *bh; + struct buffer_head *bhtail; + void *end_io; +}; + +#define DEFAULT_COW { \ + .count = 0, \ + .cow_path = NULL, \ + .cow_dev = 0, \ + .backing_path = NULL, \ + .backing_dev = 0, \ + .bitmap = NULL, \ + .bitmap_len = 0, \ + .bitmap_offset = 0, \ + .data_offset = 0, \ + .devfs = NULL, \ + .working = ATOMIC_INIT(0), \ + .io_lock = SPIN_LOCK_UNLOCKED, \ +} + +#define MAX_DEV (8) +#define MAX_MINOR (MAX_DEV << COW_SHIFT) + +struct cow cow_dev[MAX_DEV] = { [ 0 ... MAX_DEV - 1 ] = DEFAULT_COW }; + +/* Not modified by this driver */ +static int blk_sizes[MAX_MINOR] = { [ 0 ... MAX_MINOR - 1 ] = BLOCK_SIZE }; +static int hardsect_sizes[MAX_MINOR] = { [ 0 ... MAX_MINOR - 1 ] = 512 }; + +/* Protected by cow_lock */ +static int sizes[MAX_MINOR] = { [ 0 ... MAX_MINOR - 1 ] = 0 }; + +static struct hd_struct cow_part[MAX_MINOR] = + { [ 0 ... MAX_MINOR - 1 ] = { 0, 0, 0 } }; + +/* Protected by io_request_lock */ +static request_queue_t *cow_queue; + +static int cow_open(struct inode *inode, struct file *filp); +static int cow_release(struct inode * inode, struct file * file); +static int cow_ioctl(struct inode * inode, struct file * file, + unsigned int cmd, unsigned long arg); +static int cow_revalidate(kdev_t rdev); + +static struct block_device_operations cow_blops = { + .open = cow_open, + .release = cow_release, + .ioctl = cow_ioctl, + .revalidate = cow_revalidate, +}; + +/* Initialized in an initcall, and unchanged thereafter */ +devfs_handle_t cow_dir_handle; + +#define INIT_GENDISK(maj, name, parts, shift, bsizes, max, blops) \ +{ \ + .major = maj, \ + .major_name = name, \ + .minor_shift = shift, \ + .max_p = 1 << shift, \ + .part = parts, \ + .sizes = bsizes, \ + .nr_real = max, \ + .real_devices = NULL, \ + .next = NULL, \ + .fops = blops, \ + .de_arr = NULL, \ + .flags = 0 \ +} + +static spinlock_t cow_lock = SPIN_LOCK_UNLOCKED; + +static struct gendisk cow_gendisk = INIT_GENDISK(MAJOR_NR, "cow", cow_part, + COW_SHIFT, sizes, MAX_DEV, + &cow_blops); + +static int cow_add(int n) +{ + struct cow *dev = &cow_dev[n]; + char name[sizeof("nnnnnn\0")]; + int err = -ENODEV; + + if(dev->cow_path == NULL) + goto out; + + sprintf(name, "%d", n); + dev->devfs = devfs_register(cow_dir_handle, name, DEVFS_FL_REMOVABLE, + MAJOR_NR, n << COW_SHIFT, S_IFBLK | + S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP, + &cow_blops, NULL); + + init_MUTEX_LOCKED(&dev->sem); + init_MUTEX(&dev->io_sem); + + return(0); + + out: + return(err); +} + +/* + * Add buffer_head to back of pending list + */ +static void cow_add_bh(struct cow *cow, struct buffer_head *bh) +{ + unsigned long flags; + + spin_lock_irqsave(&cow->io_lock, flags); + if(cow->bhtail != NULL){ + cow->bhtail->b_reqnext = bh; + cow->bhtail = bh; + } + else { + cow->bh = bh; + cow->bhtail = bh; + } + spin_unlock_irqrestore(&cow->io_lock, flags); +} + +/* +* Grab first pending buffer +*/ +static struct buffer_head *cow_get_bh(struct cow *cow) +{ + struct buffer_head *bh; + + spin_lock_irq(&cow->io_lock); + bh = cow->bh; + if(bh != NULL){ + if(bh == cow->bhtail) + cow->bhtail = NULL; + cow->bh = bh->b_reqnext; + bh->b_reqnext = NULL; + } + spin_unlock_irq(&cow->io_lock); + + return(bh); +} + +static void cow_handle_bh(struct cow *cow, struct buffer_head *bh, + struct buffer_head **cow_bh, int ncow_bh) +{ + int i; + + if(ncow_bh > 0) + ll_rw_block(WRITE, ncow_bh, cow_bh); + + for(i = 0; i < ncow_bh ; i++){ + wait_on_buffer(cow_bh[i]); + brelse(cow_bh[i]); + } + + ll_rw_block(WRITE, 1, &bh); + brelse(bh); +} + +static struct buffer_head *cow_new_bh(struct cow *dev, int sector) +{ + struct buffer_head *bh; + + sector = (dev->bitmap_offset + sector / 8) / dev->sectorsize; + bh = getblk(dev->cow_dev, sector, dev->sectorsize); + memcpy(bh->b_data, dev->bitmap + sector / (8 * sizeof(dev->bitmap[0])), + dev->sectorsize); + return(bh); +} + +/* Copied from loop.c, needed to avoid deadlocking in make_request. */ + +static int cow_thread(void *data) +{ + struct cow *dev = data; + struct buffer_head *bh; + + daemonize(); + exit_files(current); + + sprintf(current->comm, "cow%d", dev - cow_dev); + + spin_lock_irq(¤t->sigmask_lock); + sigfillset(¤t->blocked); + flush_signals(current); + spin_unlock_irq(¤t->sigmask_lock); + + atomic_inc(&dev->working); + + current->policy = SCHED_OTHER; + current->nice = -20; + + current->flags |= PF_NOIO; + + /* + * up sem, we are running + */ + up(&dev->sem); + + for(;;){ + int start, len, nbh, i, update_bitmap = 0; + struct buffer_head *cow_bh[2]; + + down_interruptible(&dev->io_sem); + /* + * could be upped because of tear-down, not because of + * pending work + */ + if(!atomic_read(&dev->working)) + break; + + bh = cow_get_bh(dev); + if(bh == NULL){ + printk(KERN_ERR "cow: missing bh\n"); + continue; + } + + start = bh->b_blocknr * bh->b_size / dev->sectorsize; + len = bh->b_size / dev->sectorsize; + for(i = 0; i < len ; i++){ + if(ubd_test_bit(start + i, + (unsigned char *) dev->bitmap)) + continue; + + update_bitmap = 1; + ubd_set_bit(start + i, (unsigned char *) dev->bitmap); + } + + cow_bh[0] = NULL; + cow_bh[1] = NULL; + nbh = 0; + if(update_bitmap){ + cow_bh[0] = cow_new_bh(dev, start); + nbh++; + if(start / dev->sectorsize != + (start + len) / dev->sectorsize){ + cow_bh[1] = cow_new_bh(dev, start + len); + nbh++; + } + } + + bh->b_dev = dev->cow_dev; + bh->b_blocknr += dev->data_offset / dev->sectorsize; + + cow_handle_bh(dev, bh, cow_bh, nbh); + + /* + * upped both for pending work and tear-down, lo_pending + * will hit zero then + */ + if(atomic_dec_and_test(&dev->working)) + break; + } + + up(&dev->sem); + return(0); +} + +static int cow_make_request(request_queue_t *q, int rw, struct buffer_head *bh) +{ + struct cow *dev; + int n, minor; + + minor = MINOR(bh->b_rdev); + n = minor >> COW_SHIFT; + dev = &cow_dev[n]; + + dev->end_io = NULL; + if(ubd_test_bit(bh->b_rsector, (unsigned char *) dev->bitmap)){ + bh->b_rdev = dev->cow_dev; + bh->b_rsector += dev->data_offset / dev->sectorsize; + } + else if(rw == WRITE){ + bh->b_dev = dev->cow_dev; + bh->b_blocknr += dev->data_offset / dev->sectorsize; + + cow_add_bh(dev, bh); + up(&dev->io_sem); + return(0); + } + else { + bh->b_rdev = dev->backing_dev; + } + + return(1); +} + +int cow_init(void) +{ + int i; + + cow_dir_handle = devfs_mk_dir (NULL, "cow", NULL); + if (devfs_register_blkdev(MAJOR_NR, "cow", &cow_blops)) { + printk(KERN_ERR "cow: unable to get major %d\n", MAJOR_NR); + return -1; + } + read_ahead[MAJOR_NR] = 8; /* 8 sector (4kB) read-ahead */ + blksize_size[MAJOR_NR] = blk_sizes; + blk_size[MAJOR_NR] = sizes; + INIT_HARDSECT(hardsect_size, MAJOR_NR, hardsect_sizes); + + cow_queue = BLK_DEFAULT_QUEUE(MAJOR_NR); + blk_init_queue(cow_queue, NULL); + INIT_ELV(cow_queue, &cow_queue->elevator); + blk_queue_make_request(cow_queue, cow_make_request); + + add_gendisk(&cow_gendisk); + + for(i=0;i 0){ + n = (left > blocksize) ? blocksize : left; + + bh = bread(dev, block, (n < 512) ? 512 : n); + if(bh == NULL) + return(-EIO); + + n -= offset; + memcpy(&buf[cur], bh->b_data + offset, n); + block++; + left -= n; + cur += n; + offset = 0; + brelse(bh); + } + + return(count); +} + +static int cow_open(struct inode *inode, struct file *filp) +{ + int (*dev_ioctl)(struct inode *, struct file *, unsigned int, + unsigned long); + mm_segment_t fs; + struct cow *dev; + __u64 size; + __u32 version, align; + time_t mtime; + char *backing_file; + int n, offset, err = 0; + + n = DEVICE_NR(inode->i_rdev); + if(n >= MAX_DEV) + return(-ENODEV); + dev = &cow_dev[n]; + offset = n << COW_SHIFT; + + spin_lock(&cow_lock); + + if(dev->count == 0){ + dev->cow_dev = name_to_kdev_t(dev->cow_path); + if(dev->cow_dev == 0){ + printk(KERN_ERR "cow_open - name_to_kdev_t(\"%s\") " + "failed\n", dev->cow_path); + err = -ENODEV; + } + + dev->backing_dev = name_to_kdev_t(dev->backing_path); + if(dev->backing_dev == 0){ + printk(KERN_ERR "cow_open - name_to_kdev_t(\"%s\") " + "failed\n", dev->backing_path); + err = -ENODEV; + } + + if(err) + goto out; + + dev->cow_bdev = bdget(dev->cow_dev); + if(dev->cow_bdev == NULL){ + printk(KERN_ERR "cow_open - bdget(\"%s\") failed\n", + dev->cow_path); + err = -ENOMEM; + } + dev->backing_bdev = bdget(dev->backing_dev); + if(dev->backing_bdev == NULL){ + printk(KERN_ERR "cow_open - bdget(\"%s\") failed\n", + dev->backing_path); + err = -ENOMEM; + } + + if(err) + goto out; + + err = blkdev_get(dev->cow_bdev, FMODE_READ|FMODE_WRITE, 0, + BDEV_RAW); + if(err){ + printk("cow_open - blkdev_get of COW device failed, " + "error = %d\n", err); + goto out; + } + + err = blkdev_get(dev->backing_bdev, FMODE_READ, 0, BDEV_RAW); + if(err){ + printk("cow_open - blkdev_get of backing device " + "failed, error = %d\n", err); + goto out; + } + + err = read_cow_header(reader, &dev->cow_dev, &version, + &backing_file, &mtime, &size, + &dev->sectorsize, &align, + &dev->bitmap_offset); + if(err){ + printk(KERN_ERR "cow_open - read_cow_header failed, " + "err = %d\n", err); + goto out; + } + + cow_sizes(version, size, dev->sectorsize, align, + dev->bitmap_offset, &dev->bitmap_len, + &dev->data_offset); + dev->bitmap = (void *) vmalloc(dev->bitmap_len); + if(dev->bitmap == NULL){ + err = -ENOMEM; + printk(KERN_ERR "Failed to vmalloc COW bitmap\n"); + goto out; + } + flush_tlb_kernel_vm(); + + err = reader(dev->bitmap_offset, (char *) dev->bitmap, + dev->bitmap_len, &dev->cow_dev); + if(err < 0){ + printk(KERN_ERR "Failed to read COW bitmap\n"); + vfree(dev->bitmap); + goto out; + } + + dev_ioctl = dev->backing_bdev->bd_op->ioctl; + fs = get_fs(); + set_fs(KERNEL_DS); + err = (*dev_ioctl)(inode, filp, BLKGETSIZE, + (unsigned long) &sizes[offset]); + set_fs(fs); + if(err){ + printk(KERN_ERR "cow_open - BLKGETSIZE failed, " + "error = %d\n", err); + goto out; + } + + kernel_thread(cow_thread, dev, + CLONE_FS | CLONE_FILES | CLONE_SIGHAND); + down(&dev->sem); + } + dev->count++; + out: + spin_unlock(&cow_lock); + return(err); +} + +static int cow_release(struct inode * inode, struct file * file) +{ + struct cow *dev; + int n, err; + + n = DEVICE_NR(inode->i_rdev); + if(n >= MAX_DEV) + return(-ENODEV); + dev = &cow_dev[n]; + + spin_lock(&cow_lock); + + if(--dev->count > 0) + goto out; + + err = blkdev_put(dev->cow_bdev, BDEV_RAW); + if(err) + printk("cow_release - blkdev_put of cow device failed, " + "error = %d\n", err); + bdput(dev->cow_bdev); + dev->cow_bdev = 0; + + err = blkdev_put(dev->backing_bdev, BDEV_RAW); + if(err) + printk("cow_release - blkdev_put of backing device failed, " + "error = %d\n", err); + bdput(dev->backing_bdev); + dev->backing_bdev = 0; + + out: + spin_unlock(&cow_lock); + return(0); +} + +static int cow_ioctl(struct inode * inode, struct file * file, + unsigned int cmd, unsigned long arg) +{ + struct cow *dev; + int (*dev_ioctl)(struct inode *, struct file *, unsigned int, + unsigned long); + int n; + + n = DEVICE_NR(inode->i_rdev); + if(n >= MAX_DEV) + return(-ENODEV); + dev = &cow_dev[n]; + + dev_ioctl = dev->backing_bdev->bd_op->ioctl; + return((*dev_ioctl)(inode, file, cmd, arg)); +} + +static int cow_revalidate(kdev_t rdev) +{ + printk(KERN_ERR "Need to implement cow_revalidate\n"); + return(0); +} + +static int parse_unit(char **ptr) +{ + char *str = *ptr, *end; + int n = -1; + + if(isdigit(*str)) { + n = simple_strtoul(str, &end, 0); + if(end == str) + return(-1); + *ptr = end; + } + else if (('a' <= *str) && (*str <= 'h')) { + n = *str - 'a'; + str++; + *ptr = str; + } + return(n); +} + +static int cow_setup(char *str) +{ + struct cow *dev; + char *cow_name, *backing_name; + int unit; + + unit = parse_unit(&str); + if(unit < 0){ + printk(KERN_ERR "cow_setup - Couldn't parse unit number\n"); + return(1); + } + + if(*str != '='){ + printk(KERN_ERR "cow_setup - Missing '=' after unit " + "number\n"); + return(1); + } + str++; + + cow_name = str; + backing_name = strchr(str, ','); + if(backing_name == NULL){ + printk(KERN_ERR "cow_setup - missing backing device name\n"); + return(0); + } + *backing_name = '\0'; + backing_name++; + + spin_lock(&cow_lock); + + dev = &cow_dev[unit]; + dev->cow_path = cow_name; + dev->backing_path = backing_name; + + spin_unlock(&cow_lock); + return(0); +} + +__setup("cow", cow_setup); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN /dev/null arch/um/drivers/cow_sys.h --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/drivers/cow_sys.h 2004-06-29 21:02:55.707289960 +0200 @@ -0,0 +1,48 @@ +#ifndef __COW_SYS_H__ +#define __COW_SYS_H__ + +#include "kern_util.h" +#include "user_util.h" +#include "os.h" +#include "user.h" + +static inline void *cow_malloc(int size) +{ + return(um_kmalloc(size)); +} + +static inline void cow_free(void *ptr) +{ + kfree(ptr); +} + +#define cow_printf printk + +static inline char *cow_strdup(char *str) +{ + return(uml_strdup(str)); +} + +static inline int cow_seek_file(int fd, __u64 offset) +{ + return(os_seek_file(fd, offset)); +} + +static inline int cow_file_size(char *file, __u64 *size_out) +{ + return(os_file_size(file, size_out)); +} + +static inline int cow_write_file(int fd, char *buf, int size) +{ + return(os_write_file(fd, buf, size)); +} + +#endif + +/* + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN /dev/null arch/um/drivers/cow_user.c --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/drivers/cow_user.c 2004-06-29 21:02:55.708289808 +0200 @@ -0,0 +1,375 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "os.h" + +#include "cow.h" +#include "cow_sys.h" + +#define PATH_LEN_V1 256 + +struct cow_header_v1 { + int magic; + int version; + char backing_file[PATH_LEN_V1]; + time_t mtime; + __u64 size; + int sectorsize; +}; + +#define PATH_LEN_V2 MAXPATHLEN + +struct cow_header_v2 { + unsigned long magic; + unsigned long version; + char backing_file[PATH_LEN_V2]; + time_t mtime; + __u64 size; + int sectorsize; +}; + +/* Define PATH_LEN_V3 as the usual value of MAXPATHLEN, just hard-code it in + * case other systems have different values for MAXPATHLEN + */ +#define PATH_LEN_V3 4096 + +/* Changes from V2 - + * PATH_LEN_V3 as described above + * Explicitly specify field bit lengths for systems with different + * lengths for the usual C types. Not sure whether char or + * time_t should be changed, this can be changed later without + * breaking compatibility + * Add alignment field so that different alignments can be used for the + * bitmap and data + * Add cow_format field to allow for the possibility of different ways + * of specifying the COW blocks. For now, the only value is 0, + * for the traditional COW bitmap. + * Move the backing_file field to the end of the header. This allows + * for the possibility of expanding it into the padding required + * by the bitmap alignment. + * The bitmap and data portions of the file will be aligned as specified + * by the alignment field. This is to allow COW files to be + * put on devices with restrictions on access alignments, such as + * /dev/raw, with a 512 byte alignment restriction. This also + * allows the data to be more aligned more strictly than on + * sector boundaries. This is needed for ubd-mmap, which needs + * the data to be page aligned. + * Fixed (finally!) the rounding bug + */ + +struct cow_header_v3 { + __u32 magic; + __u32 version; + time_t mtime; + __u64 size; + __u32 sectorsize; + __u32 alignment; + __u32 cow_format; + char backing_file[PATH_LEN_V3]; +}; + +/* COW format definitions - for now, we have only the usual COW bitmap */ +#define COW_BITMAP 0 + +union cow_header { + struct cow_header_v1 v1; + struct cow_header_v2 v2; + struct cow_header_v3 v3; +}; + +#define COW_MAGIC 0x4f4f4f4d /* MOOO */ +#define COW_VERSION 3 + +#define DIV_ROUND(x, len) (((x) + (len) - 1) / (len)) +#define ROUND_UP(x, align) DIV_ROUND(x, align) * (align) + +void cow_sizes(int version, __u64 size, int sectorsize, int align, + int bitmap_offset, unsigned long *bitmap_len_out, + int *data_offset_out) +{ + if(version < 3){ + *bitmap_len_out = (size + sectorsize - 1) / (8 * sectorsize); + + *data_offset_out = bitmap_offset + *bitmap_len_out; + *data_offset_out = (*data_offset_out + sectorsize - 1) / + sectorsize; + *data_offset_out *= sectorsize; + } + else { + *bitmap_len_out = DIV_ROUND(size, sectorsize); + *bitmap_len_out = DIV_ROUND(*bitmap_len_out, 8); + + *data_offset_out = bitmap_offset + *bitmap_len_out; + *data_offset_out = ROUND_UP(*data_offset_out, align); + } +} + +static int absolutize(char *to, int size, char *from) +{ + char save_cwd[256], *slash; + int remaining; + + if(getcwd(save_cwd, sizeof(save_cwd)) == NULL) { + cow_printf("absolutize : unable to get cwd - errno = %d\n", + errno); + return(-1); + } + slash = strrchr(from, '/'); + if(slash != NULL){ + *slash = '\0'; + if(chdir(from)){ + *slash = '/'; + cow_printf("absolutize : Can't cd to '%s' - " + "errno = %d\n", from, errno); + return(-1); + } + *slash = '/'; + if(getcwd(to, size) == NULL){ + cow_printf("absolutize : unable to get cwd of '%s' - " + "errno = %d\n", from, errno); + return(-1); + } + remaining = size - strlen(to); + if(strlen(slash) + 1 > remaining){ + cow_printf("absolutize : unable to fit '%s' into %d " + "chars\n", from, size); + return(-1); + } + strcat(to, slash); + } + else { + if(strlen(save_cwd) + 1 + strlen(from) + 1 > size){ + cow_printf("absolutize : unable to fit '%s' into %d " + "chars\n", from, size); + return(-1); + } + strcpy(to, save_cwd); + strcat(to, "/"); + strcat(to, from); + } + chdir(save_cwd); + return(0); +} + +int write_cow_header(char *cow_file, int fd, char *backing_file, + int sectorsize, int alignment, long long *size) +{ + struct cow_header_v3 *header; + unsigned long modtime; + int err; + + err = cow_seek_file(fd, 0); + if(err < 0){ + cow_printf("write_cow_header - lseek failed, err = %d\n", -err); + goto out; + } + + err = -ENOMEM; + header = cow_malloc(sizeof(*header)); + if(header == NULL){ + cow_printf("Failed to allocate COW V3 header\n"); + goto out; + } + header->magic = htonl(COW_MAGIC); + header->version = htonl(COW_VERSION); + + err = -EINVAL; + if(strlen(backing_file) > sizeof(header->backing_file) - 1){ + cow_printf("Backing file name \"%s\" is too long - names are " + "limited to %d characters\n", backing_file, + sizeof(header->backing_file) - 1); + goto out_free; + } + + if(absolutize(header->backing_file, sizeof(header->backing_file), + backing_file)) + goto out_free; + + err = os_file_modtime(header->backing_file, &modtime); + if(err < 0){ + cow_printf("Backing file '%s' mtime request failed, " + "err = %d\n", header->backing_file, -err); + goto out_free; + } + + err = cow_file_size(header->backing_file, size); + if(err < 0){ + cow_printf("Couldn't get size of backing file '%s', " + "err = %d\n", header->backing_file, -err); + goto out_free; + } + + header->mtime = htonl(modtime); + header->size = htonll(*size); + header->sectorsize = htonl(sectorsize); + header->alignment = htonl(alignment); + header->cow_format = COW_BITMAP; + + err = os_write_file(fd, header, sizeof(*header)); + if(err != sizeof(*header)){ + cow_printf("Write of header to new COW file '%s' failed, " + "err = %d\n", cow_file, -err); + goto out_free; + } + err = 0; + out_free: + cow_free(header); + out: + return(err); +} + +int file_reader(__u64 offset, char *buf, int len, void *arg) +{ + int fd = *((int *) arg); + + return(pread(fd, buf, len, offset)); +} + +/* XXX Need to sanity-check the values read from the header */ + +int read_cow_header(int (*reader)(__u64, char *, int, void *), void *arg, + __u32 *version_out, char **backing_file_out, + time_t *mtime_out, __u64 *size_out, + int *sectorsize_out, __u32 *align_out, + int *bitmap_offset_out) +{ + union cow_header *header; + char *file; + int err, n; + unsigned long version, magic; + + header = cow_malloc(sizeof(*header)); + if(header == NULL){ + cow_printf("read_cow_header - Failed to allocate header\n"); + return(-ENOMEM); + } + err = -EINVAL; + n = (*reader)(0, (char *) header, sizeof(*header), arg); + if(n < offsetof(typeof(header->v1), backing_file)){ + cow_printf("read_cow_header - short header\n"); + goto out; + } + + magic = header->v1.magic; + if(magic == COW_MAGIC) { + version = header->v1.version; + } + else if(magic == ntohl(COW_MAGIC)){ + version = ntohl(header->v1.version); + } + /* No error printed because the non-COW case comes through here */ + else goto out; + + *version_out = version; + + if(version == 1){ + if(n < sizeof(header->v1)){ + cow_printf("read_cow_header - failed to read V1 " + "header\n"); + goto out; + } + *mtime_out = header->v1.mtime; + *size_out = header->v1.size; + *sectorsize_out = header->v1.sectorsize; + *bitmap_offset_out = sizeof(header->v1); + *align_out = *sectorsize_out; + file = header->v1.backing_file; + } + else if(version == 2){ + if(n < sizeof(header->v2)){ + cow_printf("read_cow_header - failed to read V2 " + "header\n"); + goto out; + } + *mtime_out = ntohl(header->v2.mtime); + *size_out = ntohll(header->v2.size); + *sectorsize_out = ntohl(header->v2.sectorsize); + *bitmap_offset_out = sizeof(header->v2); + *align_out = *sectorsize_out; + file = header->v2.backing_file; + } + else if(version == 3){ + if(n < sizeof(header->v3)){ + cow_printf("read_cow_header - failed to read V2 " + "header\n"); + goto out; + } + *mtime_out = ntohl(header->v3.mtime); + *size_out = ntohll(header->v3.size); + *sectorsize_out = ntohl(header->v3.sectorsize); + *align_out = ntohl(header->v3.alignment); + *bitmap_offset_out = ROUND_UP(sizeof(header->v3), *align_out); + file = header->v3.backing_file; + } + else { + cow_printf("read_cow_header - invalid COW version\n"); + goto out; + } + err = -ENOMEM; + *backing_file_out = cow_strdup(file); + if(*backing_file_out == NULL){ + cow_printf("read_cow_header - failed to allocate backing " + "file\n"); + goto out; + } + err = 0; + out: + cow_free(header); + return(err); +} + +int init_cow_file(int fd, char *cow_file, char *backing_file, int sectorsize, + int alignment, int *bitmap_offset_out, + unsigned long *bitmap_len_out, int *data_offset_out) +{ + __u64 size, offset; + char zero = 0; + int err; + + err = write_cow_header(cow_file, fd, backing_file, sectorsize, + alignment, &size); + if(err) + goto out; + + *bitmap_offset_out = ROUND_UP(sizeof(struct cow_header_v3), alignment); + cow_sizes(COW_VERSION, size, sectorsize, alignment, *bitmap_offset_out, + bitmap_len_out, data_offset_out); + + offset = *data_offset_out + size - sizeof(zero); + err = cow_seek_file(fd, offset); + if(err < 0){ + cow_printf("cow bitmap lseek failed : err = %d\n", -err); + goto out; + } + + /* does not really matter how much we write it is just to set EOF + * this also sets the entire COW bitmap + * to zero without having to allocate it + */ + err = cow_write_file(fd, &zero, sizeof(zero)); + if(err != sizeof(zero)){ + cow_printf("Write of bitmap to new COW file '%s' failed, " + "err = %d\n", cow_file, -err); + err = -EINVAL; + goto out; + } + + return(0); + + out: + return(err); +} + +/* + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN arch/um/drivers/daemon_user.c~Main-uml-patch-no-skas arch/um/drivers/daemon_user.c --- uml-linux-2.6.7/arch/um/drivers/daemon_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.443330088 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/daemon_user.c 2004-06-29 21:02:55.708289808 +0200 @@ -53,7 +53,8 @@ static int connect_to_switch(struct daem struct request_v3 req; int fd, n, err; - if((pri->control = socket(AF_UNIX, SOCK_STREAM, 0)) < 0){ + pri->control = socket(AF_UNIX, SOCK_STREAM, 0); + if(pri->control < 0){ printk("daemon_open : control socket failed, errno = %d\n", errno); return(-errno); @@ -67,7 +68,8 @@ static int connect_to_switch(struct daem goto out; } - if((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0){ + fd = socket(AF_UNIX, SOCK_DGRAM, 0); + if(fd < 0){ printk("daemon_open : data socket failed, errno = %d\n", errno); err = -errno; @@ -91,18 +93,18 @@ static int connect_to_switch(struct daem req.version = SWITCH_VERSION; req.type = REQ_NEW_CONTROL; req.sock = *local_addr; - n = write(pri->control, &req, sizeof(req)); + n = os_write_file(pri->control, &req, sizeof(req)); if(n != sizeof(req)){ - printk("daemon_open : control setup request returned %d, " - "errno = %d\n", n, errno); + printk("daemon_open : control setup request failed, err = %d\n", + -n); err = -ENOTCONN; goto out; } - n = read(pri->control, sun, sizeof(*sun)); + n = os_read_file(pri->control, sun, sizeof(*sun)); if(n != sizeof(*sun)){ - printk("daemon_open : read of data socket returned %d, " - "errno = %d\n", n, errno); + printk("daemon_open : read of data socket failed, err = %d\n", + -n); err = -ENOTCONN; goto out_close; } @@ -111,9 +113,9 @@ static int connect_to_switch(struct daem return(fd); out_close: - close(fd); + os_close_file(fd); out: - close(pri->control); + os_close_file(pri->control); return(err); } @@ -153,8 +155,8 @@ static void daemon_remove(void *data) { struct daemon_data *pri = data; - close(pri->fd); - close(pri->control); + os_close_file(pri->fd); + os_close_file(pri->control); if(pri->data_addr != NULL) kfree(pri->data_addr); if(pri->ctl_addr != NULL) kfree(pri->ctl_addr); if(pri->local_addr != NULL) kfree(pri->local_addr); diff -puN arch/um/drivers/fd.c~Main-uml-patch-no-skas arch/um/drivers/fd.c --- uml-linux-2.6.7/arch/um/drivers/fd.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.444329936 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/fd.c 2004-06-29 21:02:55.708289808 +0200 @@ -35,7 +35,8 @@ void *fd_init(char *str, int device, str printk("fd_init : couldn't parse file descriptor '%s'\n", str); return(NULL); } - if((data = um_kmalloc(sizeof(*data))) == NULL) return(NULL); + data = um_kmalloc(sizeof(*data)); + if(data == NULL) return(NULL); *data = ((struct fd_chan) { .fd = n, .raw = opts->raw }); return(data); diff -puN arch/um/drivers/harddog_user.c~Main-uml-patch-no-skas arch/um/drivers/harddog_user.c --- uml-linux-2.6.7/arch/um/drivers/harddog_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.445329784 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/harddog_user.c 2004-06-29 21:02:55.709289656 +0200 @@ -27,10 +27,10 @@ static void pre_exec(void *d) dup2(data->stdin, 0); dup2(data->stdout, 1); dup2(data->stdout, 2); - close(data->stdin); - close(data->stdout); - close(data->close_me[0]); - close(data->close_me[1]); + os_close_file(data->stdin); + os_close_file(data->stdout); + os_close_file(data->close_me[0]); + os_close_file(data->close_me[1]); } int start_watchdog(int *in_fd_ret, int *out_fd_ret, char *sock) @@ -44,15 +44,15 @@ int start_watchdog(int *in_fd_ret, int * char **args = NULL; err = os_pipe(in_fds, 1, 0); - if(err){ - printk("harddog_open - os_pipe failed, errno = %d\n", -err); - return(err); + if(err < 0){ + printk("harddog_open - os_pipe failed, err = %d\n", -err); + goto out; } err = os_pipe(out_fds, 1, 0); - if(err){ - printk("harddog_open - os_pipe failed, errno = %d\n", -err); - return(err); + if(err < 0){ + printk("harddog_open - os_pipe failed, err = %d\n", -err); + goto out_close_in; } data.stdin = out_fds[0]; @@ -72,42 +72,47 @@ int start_watchdog(int *in_fd_ret, int * pid = run_helper(pre_exec, &data, args, NULL); - close(out_fds[0]); - close(in_fds[1]); + os_close_file(out_fds[0]); + os_close_file(in_fds[1]); if(pid < 0){ err = -pid; - printk("harddog_open - run_helper failed, errno = %d\n", err); - goto out; + printk("harddog_open - run_helper failed, errno = %d\n", -err); + goto out_close_out; } - n = read(in_fds[0], &c, sizeof(c)); + n = os_read_file(in_fds[0], &c, sizeof(c)); if(n == 0){ printk("harddog_open - EOF on watchdog pipe\n"); helper_wait(pid); err = -EIO; - goto out; + goto out_close_out; } else if(n < 0){ printk("harddog_open - read of watchdog pipe failed, " - "errno = %d\n", errno); + "err = %d\n", -n); helper_wait(pid); - err = -errno; - goto out; + err = n; + goto out_close_out; } *in_fd_ret = in_fds[0]; *out_fd_ret = out_fds[1]; return(0); + + out_close_in: + os_close_file(in_fds[0]); + os_close_file(in_fds[1]); + out_close_out: + os_close_file(out_fds[0]); + os_close_file(out_fds[1]); out: - close(out_fds[1]); - close(in_fds[0]); return(err); } void stop_watchdog(int in_fd, int out_fd) { - close(in_fd); - close(out_fd); + os_close_file(in_fd); + os_close_file(out_fd); } int ping_watchdog(int fd) @@ -115,11 +120,12 @@ int ping_watchdog(int fd) int n; char c = '\n'; - n = write(fd, &c, sizeof(c)); - if(n < sizeof(c)){ - printk("ping_watchdog - write failed, errno = %d\n", - errno); - return(-errno); + n = os_write_file(fd, &c, sizeof(c)); + if(n != sizeof(c)){ + printk("ping_watchdog - write failed, err = %d\n", -n); + if(n < 0) + return(n); + return(-EIO); } return 1; diff -puN arch/um/drivers/hostaudio_kern.c~Main-uml-patch-no-skas arch/um/drivers/hostaudio_kern.c --- uml-linux-2.6.7/arch/um/drivers/hostaudio_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.459327656 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/hostaudio_kern.c 2004-06-29 21:02:55.709289656 +0200 @@ -5,12 +5,12 @@ #include "linux/config.h" #include "linux/module.h" -#include "linux/version.h" #include "linux/init.h" #include "linux/slab.h" #include "linux/fs.h" #include "linux/sound.h" #include "linux/soundcard.h" +#include "asm/uaccess.h" #include "kern_util.h" #include "init.h" #include "hostaudio.h" @@ -19,30 +19,39 @@ char *dsp = HOSTAUDIO_DEV_DSP; char *mixer = HOSTAUDIO_DEV_MIXER; +#define DSP_HELP \ +" This is used to specify the host dsp device to the hostaudio driver.\n" \ +" The default is \"" HOSTAUDIO_DEV_DSP "\".\n\n" + +#define MIXER_HELP \ +" This is used to specify the host mixer device to the hostaudio driver.\n" \ +" The default is \"" HOSTAUDIO_DEV_MIXER "\".\n\n" + #ifndef MODULE static int set_dsp(char *name, int *add) { - dsp = uml_strdup(name); + dsp = name; return(0); } -__uml_setup("dsp=", set_dsp, -"dsp=\n" -" This is used to specify the host dsp device to the hostaudio driver.\n" -" The default is \"" HOSTAUDIO_DEV_DSP "\".\n\n" -); +__uml_setup("dsp=", set_dsp, "dsp=\n" DSP_HELP); static int set_mixer(char *name, int *add) { - mixer = uml_strdup(name); + mixer = name; return(0); } -__uml_setup("mixer=", set_mixer, -"mixer=\n" -" This is used to specify the host mixer device to the hostaudio driver.\n" -" The default is \"" HOSTAUDIO_DEV_MIXER "\".\n\n" -); +__uml_setup("mixer=", set_mixer, "mixer=\n" MIXER_HELP); + +#else /*MODULE*/ + +MODULE_PARM(dsp, "s"); +MODULE_PARM_DESC(dsp, DSP_HELP); + +MODULE_PARM(mixer, "s"); +MODULE_PARM_DESC(mixer, MIXER_HELP); + #endif /* /dev/dsp file operations */ @@ -51,23 +60,55 @@ static ssize_t hostaudio_read(struct fil loff_t *ppos) { struct hostaudio_state *state = file->private_data; + void *kbuf; + int err; #ifdef DEBUG printk("hostaudio: read called, count = %d\n", count); #endif - return(hostaudio_read_user(state, buffer, count, ppos)); + kbuf = kmalloc(count, GFP_KERNEL); + if(kbuf == NULL) + return(-ENOMEM); + + err = hostaudio_read_user(state, kbuf, count, ppos); + if(err < 0) + goto out; + + if(copy_to_user(buffer, kbuf, err)) + err = -EFAULT; + + out: + kfree(kbuf); + return(err); } static ssize_t hostaudio_write(struct file *file, const char *buffer, size_t count, loff_t *ppos) { struct hostaudio_state *state = file->private_data; + void *kbuf; + int err; #ifdef DEBUG printk("hostaudio: write called, count = %d\n", count); #endif - return(hostaudio_write_user(state, buffer, count, ppos)); + + kbuf = kmalloc(count, GFP_KERNEL); + if(kbuf == NULL) + return(-ENOMEM); + + err = -EFAULT; + if(copy_from_user(kbuf, buffer, count)) + goto out; + + err = hostaudio_write_user(state, kbuf, count, ppos); + if(err < 0) + goto out; + + out: + kfree(kbuf); + return(err); } static unsigned int hostaudio_poll(struct file *file, @@ -86,12 +127,43 @@ static int hostaudio_ioctl(struct inode unsigned int cmd, unsigned long arg) { struct hostaudio_state *state = file->private_data; + unsigned long data = 0; + int err; #ifdef DEBUG printk("hostaudio: ioctl called, cmd = %u\n", cmd); #endif + switch(cmd){ + case SNDCTL_DSP_SPEED: + case SNDCTL_DSP_STEREO: + case SNDCTL_DSP_GETBLKSIZE: + case SNDCTL_DSP_CHANNELS: + case SNDCTL_DSP_SUBDIVIDE: + case SNDCTL_DSP_SETFRAGMENT: + if(get_user(data, (int *) arg)) + return(-EFAULT); + break; + default: + break; + } + + err = hostaudio_ioctl_user(state, cmd, (unsigned long) &data); + + switch(cmd){ + case SNDCTL_DSP_SPEED: + case SNDCTL_DSP_STEREO: + case SNDCTL_DSP_GETBLKSIZE: + case SNDCTL_DSP_CHANNELS: + case SNDCTL_DSP_SUBDIVIDE: + case SNDCTL_DSP_SETFRAGMENT: + if(put_user(data, (int *) arg)) + return(-EFAULT); + break; + default: + break; + } - return(hostaudio_ioctl_user(state, cmd, arg)); + return(err); } static int hostaudio_open(struct inode *inode, struct file *file) @@ -225,7 +297,8 @@ MODULE_LICENSE("GPL"); static int __init hostaudio_init_module(void) { - printk(KERN_INFO "UML Audio Relay\n"); + printk(KERN_INFO "UML Audio Relay (host dsp = %s, host mixer = %s)\n", + dsp, mixer); module_data.dev_audio = register_sound_dsp(&hostaudio_fops, -1); if(module_data.dev_audio < 0){ diff -puN arch/um/drivers/hostaudio_user.c~Main-uml-patch-no-skas arch/um/drivers/hostaudio_user.c --- uml-linux-2.6.7/arch/um/drivers/hostaudio_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.460327504 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/hostaudio_user.c 2004-06-29 21:02:55.709289656 +0200 @@ -4,9 +4,6 @@ */ #include -#include -#include -#include #include #include #include "hostaudio.h" @@ -20,45 +17,31 @@ ssize_t hostaudio_read_user(struct hostaudio_state *state, char *buffer, size_t count, loff_t *ppos) { - ssize_t ret; - #ifdef DEBUG printk("hostaudio: read_user called, count = %d\n", count); #endif - ret = read(state->fd, buffer, count); - - if(ret < 0) return(-errno); - return(ret); + return(os_read_file(state->fd, buffer, count)); } ssize_t hostaudio_write_user(struct hostaudio_state *state, const char *buffer, size_t count, loff_t *ppos) { - ssize_t ret; - #ifdef DEBUG printk("hostaudio: write_user called, count = %d\n", count); #endif - ret = write(state->fd, buffer, count); - - if(ret < 0) return(-errno); - return(ret); + return(os_write_file(state->fd, buffer, count)); } int hostaudio_ioctl_user(struct hostaudio_state *state, unsigned int cmd, unsigned long arg) { - int ret; #ifdef DEBUG printk("hostaudio: ioctl_user called, cmd = %u\n", cmd); #endif - ret = ioctl(state->fd, cmd, arg); - - if(ret < 0) return(-errno); - return(ret); + return(os_ioctl_generic(state->fd, cmd, arg)); } int hostaudio_open_user(struct hostaudio_state *state, int r, int w, char *dsp) @@ -67,14 +50,15 @@ int hostaudio_open_user(struct hostaudio printk("hostaudio: open_user called\n"); #endif - state->fd = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0); - - if(state->fd >= 0) return(0); + state->fd = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0); - printk("hostaudio_open_user failed to open '%s', errno = %d\n", - dsp, errno); + if(state->fd < 0) { + printk("hostaudio_open_user failed to open '%s', err = %d\n", + dsp, -state->fd); + return(state->fd); + } - return(-errno); + return(0); } int hostaudio_release_user(struct hostaudio_state *state) @@ -82,10 +66,10 @@ int hostaudio_release_user(struct hostau #ifdef DEBUG printk("hostaudio: release called\n"); #endif - if(state->fd >= 0){ - close(state->fd); - state->fd=-1; - } + if(state->fd >= 0){ + os_close_file(state->fd); + state->fd = -1; + } return(0); } @@ -95,15 +79,11 @@ int hostaudio_release_user(struct hostau int hostmixer_ioctl_mixdev_user(struct hostmixer_state *state, unsigned int cmd, unsigned long arg) { - int ret; #ifdef DEBUG printk("hostmixer: ioctl_user called cmd = %u\n",cmd); #endif - ret = ioctl(state->fd, cmd, arg); - if(ret < 0) - return(-errno); - return(ret); + return(os_ioctl_generic(state->fd, cmd, arg)); } int hostmixer_open_mixdev_user(struct hostmixer_state *state, int r, int w, @@ -115,12 +95,13 @@ int hostmixer_open_mixdev_user(struct ho state->fd = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0); - if(state->fd >= 0) return(0); - - printk("hostaudio_open_mixdev_user failed to open '%s', errno = %d\n", - mixer, errno); + if(state->fd < 0) { + printk("hostaudio_open_mixdev_user failed to open '%s', " + "err = %d\n", mixer, state->fd); + return(state->fd); + } - return(-errno); + return(0); } int hostmixer_release_mixdev_user(struct hostmixer_state *state) @@ -130,7 +111,7 @@ int hostmixer_release_mixdev_user(struct #endif if(state->fd >= 0){ - close(state->fd); + os_close_file(state->fd); state->fd = -1; } diff -puN arch/um/drivers/line.c~Main-uml-patch-no-skas arch/um/drivers/line.c --- uml-linux-2.6.7/arch/um/drivers/line.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.462327200 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/line.c 2004-06-29 21:02:55.710289504 +0200 @@ -6,8 +6,8 @@ #include "linux/sched.h" #include "linux/slab.h" #include "linux/list.h" +#include "linux/interrupt.h" #include "linux/devfs_fs_kernel.h" -#include "asm/irq.h" #include "asm/uaccess.h" #include "chan_kern.h" #include "irq_user.h" @@ -16,38 +16,55 @@ #include "user_util.h" #include "kern_util.h" #include "os.h" +#include "irq_kern.h" #define LINE_BUFSIZE 4096 -void line_interrupt(int irq, void *data, struct pt_regs *unused) +static irqreturn_t line_interrupt(int irq, void *data, struct pt_regs *unused) { struct line *dev = data; if(dev->count > 0) chan_interrupt(&dev->chan_list, &dev->task, dev->tty, irq, dev); + return IRQ_HANDLED; } -void line_timer_cb(void *arg) +static void line_timer_cb(void *arg) { struct line *dev = arg; line_interrupt(dev->driver->read_irq, dev, NULL); } -static void buffer_data(struct line *line, const char *buf, int len) +static int write_room(struct line *dev) { - int end; + int n; + + if(dev->buffer == NULL) return(LINE_BUFSIZE - 1); + + n = dev->head - dev->tail; + if(n <= 0) n = LINE_BUFSIZE + n; + return(n - 1); +} + +static int buffer_data(struct line *line, const char *buf, int len) +{ + int end, room; if(line->buffer == NULL){ line->buffer = kmalloc(LINE_BUFSIZE, GFP_ATOMIC); if(line->buffer == NULL){ printk("buffer_data - atomic allocation failed\n"); - return; + return(0); } line->head = line->buffer; line->tail = line->buffer; } + + room = write_room(line); + len = (len > room) ? room : len; + end = line->buffer + LINE_BUFSIZE - line->tail; if(len < end){ memcpy(line->tail, buf, len); @@ -60,6 +77,8 @@ static void buffer_data(struct line *lin memcpy(line->buffer, buf, len); line->tail = line->buffer + len; } + + return(len); } static int flush_buffer(struct line *line) @@ -95,7 +114,7 @@ int line_write(struct line *lines, struc struct line *line; char *new; unsigned long flags; - int n, err, i; + int n, err, i, ret = 0; if(tty->stopped) return 0; @@ -104,9 +123,13 @@ int line_write(struct line *lines, struc if(new == NULL) return(0); n = copy_from_user(new, buf, len); - if(n == len) - return(-EFAULT); buf = new; + if(n == len){ + len = -EFAULT; + goto out_free; + } + + len -= n; } i = tty->index; @@ -115,41 +138,50 @@ int line_write(struct line *lines, struc down(&line->sem); if(line->head != line->tail){ local_irq_save(flags); - buffer_data(line, buf, len); + ret += buffer_data(line, buf, len); err = flush_buffer(line); local_irq_restore(flags); if(err <= 0) - goto out; + goto out_up; } else { n = write_chan(&line->chan_list, buf, len, line->driver->write_irq); if(n < 0){ - len = n; - goto out; + ret = n; + goto out_up; } - if(n < len) - buffer_data(line, buf + n, len - n); + + len -= n; + ret += n; + if(len > 0) + ret += buffer_data(line, buf + n, len); } - out: + out_up: up(&line->sem); - return(len); + out_free: + if(from_user) + kfree(buf); + return(ret); } -void line_write_interrupt(int irq, void *data, struct pt_regs *unused) +static irqreturn_t line_write_interrupt(int irq, void *data, + struct pt_regs *unused) { struct line *dev = data; struct tty_struct *tty = dev->tty; int err; err = flush_buffer(dev); - if(err == 0) return; + if(err == 0) + return(IRQ_NONE); else if(err < 0){ dev->head = dev->buffer; dev->tail = dev->buffer; } - if(tty == NULL) return; + if(tty == NULL) + return(IRQ_NONE); if(test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags) && (tty->ldisc.write_wakeup != NULL)) @@ -161,21 +193,9 @@ void line_write_interrupt(int irq, void * writes. */ - if (waitqueue_active(&tty->write_wait)) + if(waitqueue_active(&tty->write_wait)) wake_up_interruptible(&tty->write_wait); - -} - -int line_write_room(struct tty_struct *tty) -{ - struct line *dev = tty->driver_data; - int n; - - if(dev->buffer == NULL) return(LINE_BUFSIZE - 1); - - n = dev->head - dev->tail; - if(n <= 0) n = LINE_BUFSIZE + n; - return(n - 1); + return(IRQ_HANDLED); } int line_setup_irq(int fd, int input, int output, void *data) @@ -305,7 +325,7 @@ int line_setup(struct line *lines, int n if(*end != '='){ printk(KERN_ERR "line_setup failed to parse \"%s\"\n", init); - return(1); + return(0); } init = end; } @@ -313,12 +333,12 @@ int line_setup(struct line *lines, int n if((n >= 0) && (n >= num)){ printk("line_setup - %d out of range ((0 ... %d) allowed)\n", n, num); - return(1); + return(0); } else if(n >= 0){ if(lines[n].count > 0){ printk("line_setup - device %d is open\n", n); - return(1); + return(0); } if(lines[n].init_pri <= INIT_ONE){ lines[n].init_pri = INIT_ONE; @@ -332,7 +352,7 @@ int line_setup(struct line *lines, int n else if(!all_allowed){ printk("line_setup - can't configure all devices from " "mconsole\n"); - return(1); + return(0); } else { for(i = 0; i < num; i++){ @@ -346,7 +366,7 @@ int line_setup(struct line *lines, int n } } } - return(0); + return(1); } int line_config(struct line *lines, int num, char *str) @@ -357,7 +377,7 @@ int line_config(struct line *lines, int printk("line_config - uml_strdup failed\n"); return(-ENOMEM); } - return(line_setup(lines, num, new, 0)); + return(!line_setup(lines, num, new, 0)); } int line_get_config(char *name, struct line *lines, int num, char *str, @@ -369,7 +389,7 @@ int line_get_config(char *name, struct l dev = simple_strtoul(name, &end, 0); if((*end != '\0') || (end == name)){ - *error_out = "line_setup failed to parse device number"; + *error_out = "line_get_config failed to parse device number"; return(0); } @@ -379,15 +399,15 @@ int line_get_config(char *name, struct l } line = &lines[dev]; + down(&line->sem); - if(!line->valid) CONFIG_CHUNK(str, size, n, "none", 1); else if(line->count == 0) CONFIG_CHUNK(str, size, n, line->init_str, 1); else n = chan_config_string(&line->chan_list, str, size, error_out); - up(&line->sem); + return(n); } @@ -396,7 +416,14 @@ int line_remove(struct line *lines, int char config[sizeof("conxxxx=none\0")]; sprintf(config, "%s=none", str); - return(line_setup(lines, num, config, 0)); + return(!line_setup(lines, num, config, 0)); +} + +int line_write_room(struct tty_struct *tty) +{ + struct line *dev = tty->driver_data; + + return(write_room(dev)); } struct tty_driver *line_register_devfs(struct lines *set, @@ -412,7 +439,8 @@ struct tty_driver *line_register_devfs(s return NULL; driver->driver_name = line_driver->name; - driver->name = line_driver->devfs_name; + driver->name = line_driver->device_name; + driver->devfs_name = line_driver->devfs_name; driver->major = line_driver->major; driver->minor_start = line_driver->minor_start; driver->type = line_driver->type; @@ -432,7 +460,7 @@ struct tty_driver *line_register_devfs(s for(i = 0; i < nlines; i++){ if(!lines[i].valid) - tty_unregister_devfs(driver, i); + tty_unregister_device(driver, i); } mconsole_register_dev(&line_driver->mc); @@ -465,24 +493,25 @@ struct winch { struct line *line; }; -void winch_interrupt(int irq, void *data, struct pt_regs *unused) +irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused) { struct winch *winch = data; struct tty_struct *tty; int err; char c; - err = generic_read(winch->fd, &c, NULL); - if(err < 0){ - if(err != -EAGAIN){ - printk("winch_interrupt : read failed, errno = %d\n", - -err); - printk("fd %d is losing SIGWINCH support\n", - winch->tty_fd); - free_irq(irq, data); - return; + if(winch->fd != -1){ + err = generic_read(winch->fd, &c, NULL); + if(err < 0){ + if(err != -EAGAIN){ + printk("winch_interrupt : read failed, " + "errno = %d\n", -err); + printk("fd %d is losing SIGWINCH support\n", + winch->tty_fd); + return(IRQ_HANDLED); + } + goto out; } - goto out; } tty = winch->line->tty; if(tty != NULL){ @@ -492,7 +521,9 @@ void winch_interrupt(int irq, void *data kill_pg(tty->pgrp, SIGWINCH, 1); } out: - reactivate_fd(winch->fd, WINCH_IRQ); + if(winch->fd != -1) + reactivate_fd(winch->fd, WINCH_IRQ); + return(IRQ_HANDLED); } DECLARE_MUTEX(winch_handler_sem); @@ -529,7 +560,10 @@ static void winch_cleanup(void) list_for_each(ele, &winch_handlers){ winch = list_entry(ele, struct winch, list); - close(winch->fd); + if(winch->fd != -1){ + deactivate_fd(winch->fd, WINCH_IRQ); + os_close_file(winch->fd); + } if(winch->pid != -1) os_kill_process(winch->pid, 1); } diff -puN arch/um/drivers/Makefile~Main-uml-patch-no-skas arch/um/drivers/Makefile --- uml-linux-2.6.7/arch/um/drivers/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.463327048 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/Makefile 2004-06-29 21:02:55.710289504 +0200 @@ -1,5 +1,5 @@ # -# Copyright (C) 2000, 2002 Jeff Dike (jdike@karaya.com) +# Copyright (C) 2000, 2002, 2003 Jeff Dike (jdike@karaya.com) # Licensed under the GPL # @@ -39,6 +39,8 @@ obj-$(CONFIG_PTY_CHAN) += pty.o obj-$(CONFIG_TTY_CHAN) += tty.o obj-$(CONFIG_XTERM_CHAN) += xterm.o xterm_kern.o obj-$(CONFIG_UML_WATCHDOG) += harddog.o +obj-$(CONFIG_BLK_DEV_COW) += cow_kern.o +obj-$(CONFIG_BLK_DEV_COW_COMMON) += cow_user.o obj-y += stdio_console.o $(CHAN_OBJS) @@ -46,18 +48,7 @@ USER_SINGLE_OBJS = $(foreach f,$(patsubs USER_OBJS := $(filter %_user.o,$(obj-y) $(obj-m) $(USER_SINGLE_OBJS)) fd.o \ null.o pty.o tty.o xterm.o -USER_OBJS := $(foreach file,$(USER_OBJS),arch/um/drivers/$(file)) +USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file)) $(USER_OBJS) : %.o: %.c $(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $< - -clean: - -modules: - -fastdep: - -dep: - -archmrproper: clean - diff -puN arch/um/drivers/mcast_user.c~Main-uml-patch-no-skas arch/um/drivers/mcast_user.c --- uml-linux-2.6.7/arch/um/drivers/mcast_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.464326896 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/mcast_user.c 2004-06-29 21:02:55.711289352 +0200 @@ -23,6 +23,7 @@ #include "kern_util.h" #include "user_util.h" #include "user.h" +#include "os.h" #define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER) @@ -62,7 +63,8 @@ static int mcast_open(void *data) goto out; } - if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0){ + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0){ printk("mcast_open : data socket failed, errno = %d\n", errno); fd = -ENOMEM; @@ -72,7 +74,7 @@ static int mcast_open(void *data) if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) { printk("mcast_open: SO_REUSEADDR failed, errno = %d\n", errno); - close(fd); + os_close_file(fd); fd = -EINVAL; goto out; } @@ -82,7 +84,7 @@ static int mcast_open(void *data) sizeof(pri->ttl)) < 0) { printk("mcast_open: IP_MULTICAST_TTL failed, error = %d\n", errno); - close(fd); + os_close_file(fd); fd = -EINVAL; goto out; } @@ -91,7 +93,7 @@ static int mcast_open(void *data) if (setsockopt(fd, SOL_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) { printk("mcast_open: IP_MULTICAST_LOOP failed, error = %d\n", errno); - close(fd); + os_close_file(fd); fd = -EINVAL; goto out; } @@ -99,7 +101,7 @@ static int mcast_open(void *data) /* bind socket to mcast address */ if (bind(fd, (struct sockaddr *) sin, sizeof(*sin)) < 0) { printk("mcast_open : data bind failed, errno = %d\n", errno); - close(fd); + os_close_file(fd); fd = -EINVAL; goto out; } @@ -115,7 +117,7 @@ static int mcast_open(void *data) "interface on the host.\n"); printk("eth0 should be configured in order to use the " "multicast transport.\n"); - close(fd); + os_close_file(fd); fd = -EINVAL; } @@ -137,7 +139,7 @@ static void mcast_close(int fd, void *da errno); } - close(fd); + os_close_file(fd); } int mcast_user_write(int fd, void *buf, int len, struct mcast_data *pri) diff -puN arch/um/drivers/mconsole_kern.c~Main-uml-patch-no-skas arch/um/drivers/mconsole_kern.c --- uml-linux-2.6.7/arch/um/drivers/mconsole_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.465326744 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/mconsole_kern.c 2004-06-29 21:02:55.711289352 +0200 @@ -1,6 +1,6 @@ /* * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) - * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2001 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -15,6 +15,9 @@ #include "linux/sysrq.h" #include "linux/workqueue.h" #include "linux/module.h" +#include "linux/file.h" +#include "linux/fs.h" +#include "linux/namei.h" #include "linux/proc_fs.h" #include "asm/irq.h" #include "asm/uaccess.h" @@ -27,6 +30,7 @@ #include "init.h" #include "os.h" #include "umid.h" +#include "irq_kern.h" static int do_unlink_socket(struct notifier_block *notifier, unsigned long what, void *data) @@ -67,7 +71,7 @@ void mc_work_proc(void *unused) DECLARE_WORK(mconsole_work, mc_work_proc, NULL); -void mconsole_interrupt(int irq, void *dev_id, struct pt_regs *regs) +irqreturn_t mconsole_interrupt(int irq, void *dev_id, struct pt_regs *regs) { int fd; struct mconsole_entry *new; @@ -75,9 +79,10 @@ void mconsole_interrupt(int irq, void *d fd = (int) dev_id; while (mconsole_get_request(fd, &req)){ - if(req.cmd->as_interrupt) (*req.cmd->handler)(&req); + if(req.cmd->context == MCONSOLE_INTR) + (*req.cmd->handler)(&req); else { - new = kmalloc(sizeof(req), GFP_ATOMIC); + new = kmalloc(sizeof(*new), GFP_ATOMIC); if(new == NULL) mconsole_reply(&req, "Out of memory", 1, 0); else { @@ -88,6 +93,7 @@ void mconsole_interrupt(int irq, void *d } if(!list_empty(&mc_requests)) schedule_work(&mconsole_work); reactivate_fd(fd, MCONSOLE_IRQ); + return(IRQ_HANDLED); } void mconsole_version(struct mc_request *req) @@ -100,20 +106,109 @@ void mconsole_version(struct mc_request mconsole_reply(req, version, 0, 0); } +void mconsole_log(struct mc_request *req) +{ + int len; + char *ptr = req->request.data; + + ptr += strlen("log "); + + len = req->len - (ptr - req->request.data); + printk("%.*s", len, ptr); + mconsole_reply(req, "", 0, 0); +} + +void mconsole_proc(struct mc_request *req) +{ + struct nameidata nd; + struct file_system_type *proc; + struct super_block *super; + struct file *file; + int n, err; + char *ptr = req->request.data, *buf; + + ptr += strlen("proc"); + while(isspace(*ptr)) ptr++; + + proc = get_fs_type("proc"); + if(proc == NULL){ + mconsole_reply(req, "procfs not registered", 1, 0); + goto out; + } + + super = (*proc->get_sb)(proc, 0, NULL, NULL); + put_filesystem(proc); + if(super == NULL){ + mconsole_reply(req, "Failed to get procfs superblock", 1, 0); + goto out; + } + up_write(&super->s_umount); + + nd.dentry = super->s_root; + nd.mnt = NULL; + nd.flags = O_RDONLY + 1; + nd.last_type = LAST_ROOT; + + err = link_path_walk(ptr, &nd); + if(err){ + mconsole_reply(req, "Failed to look up file", 1, 0); + goto out_kill; + } + + file = dentry_open(nd.dentry, nd.mnt, O_RDONLY); + if(IS_ERR(file)){ + mconsole_reply(req, "Failed to open file", 1, 0); + goto out_kill; + } + + buf = kmalloc(PAGE_SIZE, GFP_KERNEL); + if(buf == NULL){ + mconsole_reply(req, "Failed to allocate buffer", 1, 0); + goto out_fput; + } + + if((file->f_op != NULL) && (file->f_op->read != NULL)){ + do { + n = (*file->f_op->read)(file, buf, PAGE_SIZE - 1, + &file->f_pos); + if(n >= 0){ + buf[n] = '\0'; + mconsole_reply(req, buf, 0, (n > 0)); + } + else { + mconsole_reply(req, "Read of file failed", + 1, 0); + goto out_free; + } + } while(n > 0); + } + else mconsole_reply(req, "", 0, 0); + + out_free: + kfree(buf); + out_fput: + fput(file); + out_kill: + deactivate_super(super); + out: ; +} + #define UML_MCONSOLE_HELPTEXT \ -"Commands: - version - Get kernel version - help - Print this message - halt - Halt UML - reboot - Reboot UML - config = - Add a new device to UML; - same syntax as command line - config - Query the configuration of a device - remove - Remove a device from UML - sysrq - Performs the SysRq action controlled by the letter - cad - invoke the Ctl-Alt-Del handler - stop - pause the UML; it will do nothing until it receives a 'go' - go - continue the UML after a 'stop' +"Commands: \n\ + version - Get kernel version \n\ + help - Print this message \n\ + halt - Halt UML \n\ + reboot - Reboot UML \n\ + config = - Add a new device to UML; \n\ + same syntax as command line \n\ + config - Query the configuration of a device \n\ + remove - Remove a device from UML \n\ + sysrq - Performs the SysRq action controlled by the letter \n\ + cad - invoke the Ctl-Alt-Del handler \n\ + stop - pause the UML; it will do nothing until it receives a 'go' \n\ + go - continue the UML after a 'stop' \n\ + log - make UML enter into the kernel log\n\ + proc - returns the contents of the UML's /proc/\n\ " void mconsole_help(struct mc_request *req) @@ -302,7 +397,7 @@ int mconsole_init(void) if(umid_file_name("mconsole", file, sizeof(file))) return(-1); snprintf(mconsole_socket_name, sizeof(file), "%s", file); - sock = create_unix_socket(file, sizeof(file)); + sock = os_create_unix_socket(file, sizeof(file), 1); if (sock < 0){ printk("Failed to initialize management console\n"); return(1); @@ -344,11 +439,16 @@ static int write_proc_mconsole(struct fi if(buf == NULL) return(-ENOMEM); - if(copy_from_user(buf, buffer, count)) - return(-EFAULT); + if(copy_from_user(buf, buffer, count)){ + count = -EFAULT; + goto out; + } + buf[count] = '\0'; mconsole_notify(notify_socket, MCONSOLE_USER_NOTIFY, buf, count); + out: + kfree(buf); return(count); } diff -puN arch/um/drivers/mconsole_user.c~Main-uml-patch-no-skas arch/um/drivers/mconsole_user.c --- uml-linux-2.6.7/arch/um/drivers/mconsole_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.466326592 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/mconsole_user.c 2004-06-29 21:02:55.712289200 +0200 @@ -1,6 +1,6 @@ /* * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) - * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2001 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -18,16 +18,18 @@ #include "umid.h" static struct mconsole_command commands[] = { - { "version", mconsole_version, 1 }, - { "halt", mconsole_halt, 0 }, - { "reboot", mconsole_reboot, 0 }, - { "config", mconsole_config, 0 }, - { "remove", mconsole_remove, 0 }, - { "sysrq", mconsole_sysrq, 1 }, - { "help", mconsole_help, 1 }, - { "cad", mconsole_cad, 1 }, - { "stop", mconsole_stop, 0 }, - { "go", mconsole_go, 1 }, + { "version", mconsole_version, MCONSOLE_INTR }, + { "halt", mconsole_halt, MCONSOLE_PROC }, + { "reboot", mconsole_reboot, MCONSOLE_PROC }, + { "config", mconsole_config, MCONSOLE_PROC }, + { "remove", mconsole_remove, MCONSOLE_PROC }, + { "sysrq", mconsole_sysrq, MCONSOLE_INTR }, + { "help", mconsole_help, MCONSOLE_INTR }, + { "cad", mconsole_cad, MCONSOLE_INTR }, + { "stop", mconsole_stop, MCONSOLE_PROC }, + { "go", mconsole_go, MCONSOLE_INTR }, + { "log", mconsole_log, MCONSOLE_INTR }, + { "proc", mconsole_proc, MCONSOLE_PROC }, }; /* Initialized in mconsole_init, which is an initcall */ @@ -139,6 +141,7 @@ int mconsole_reply(struct mc_request *re memcpy(reply.data, str, len); reply.data[len] = '\0'; total -= len; + str += len; reply.len = len + 1; len = sizeof(reply) + reply.len - sizeof(reply.data); diff -puN arch/um/drivers/mmapper_kern.c~Main-uml-patch-no-skas arch/um/drivers/mmapper_kern.c --- uml-linux-2.6.7/arch/um/drivers/mmapper_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.467326440 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/mmapper_kern.c 2004-06-29 21:02:55.712289200 +0200 @@ -120,7 +120,10 @@ static int __init mmapper_init(void) printk(KERN_INFO "Mapper v0.1\n"); v_buf = (char *) find_iomem("mmapper", &mmapper_size); - if(mmapper_size == 0) return(0); + if(mmapper_size == 0){ + printk(KERN_ERR "mmapper_init - find_iomem failed\n"); + return(0); + } p_buf = __pa(v_buf); diff -puN arch/um/drivers/net_kern.c~Main-uml-patch-no-skas arch/um/drivers/net_kern.c --- uml-linux-2.6.7/arch/um/drivers/net_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.468326288 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/net_kern.c 2004-06-29 21:02:55.712289200 +0200 @@ -26,6 +26,7 @@ #include "mconsole_kern.h" #include "init.h" #include "irq_user.h" +#include "irq_kern.h" static spinlock_t opened_lock = SPIN_LOCK_UNLOCKED; LIST_HEAD(opened); @@ -37,7 +38,8 @@ static int uml_net_rx(struct net_device struct sk_buff *skb; /* If we can't allocate memory, try again next round. */ - if ((skb = dev_alloc_skb(dev->mtu)) == NULL) { + skb = dev_alloc_skb(dev->mtu); + if (skb == NULL) { lp->stats.rx_dropped++; return 0; } @@ -61,14 +63,14 @@ static int uml_net_rx(struct net_device return pkt_len; } -void uml_net_interrupt(int irq, void *dev_id, struct pt_regs *regs) +irqreturn_t uml_net_interrupt(int irq, void *dev_id, struct pt_regs *regs) { struct net_device *dev = dev_id; struct uml_net_private *lp = dev->priv; int err; if(!netif_running(dev)) - return; + return(IRQ_NONE); spin_lock(&lp->lock); while((err = uml_net_rx(dev)) > 0) ; @@ -83,6 +85,7 @@ void uml_net_interrupt(int irq, void *de out: spin_unlock(&lp->lock); + return(IRQ_HANDLED); } static int uml_net_open(struct net_device *dev) @@ -250,37 +253,6 @@ void uml_net_user_timer_expire(unsigned #endif } -/* - * default do nothing hard header packet routines for struct net_device init. - * real ethernet transports will overwrite with real routines. - */ -static int uml_net_hard_header(struct sk_buff *skb, struct net_device *dev, - unsigned short type, void *daddr, void *saddr, unsigned len) -{ - return(0); /* no change */ -} - -static int uml_net_rebuild_header(struct sk_buff *skb) -{ - return(0); /* ignore */ -} - -static int uml_net_header_cache(struct neighbour *neigh, struct hh_cache *hh) -{ - return(-1); /* fail */ -} - -static void uml_net_header_cache_update(struct hh_cache *hh, - struct net_device *dev, unsigned char * haddr) -{ - /* ignore */ -} - -static int uml_net_header_parse(struct sk_buff *skb, unsigned char *haddr) -{ - return(0); /* nothing */ -} - static spinlock_t devices_lock = SPIN_LOCK_UNLOCKED; static struct list_head devices = LIST_HEAD_INIT(devices); @@ -290,7 +262,7 @@ static int eth_configure(int n, void *in struct uml_net *device; struct net_device *dev; struct uml_net_private *lp; - int err, size; + int save, err, size; size = transport->private_size + sizeof(struct uml_net_private) + sizeof(((struct uml_net_private *) 0)->user); @@ -332,12 +304,6 @@ static int eth_configure(int n, void *in snprintf(dev->name, sizeof(dev->name), "eth%d", n); device->dev = dev; - dev->hard_header = uml_net_hard_header; - dev->rebuild_header = uml_net_rebuild_header; - dev->hard_header_cache = uml_net_header_cache; - dev->header_cache_update= uml_net_header_cache_update; - dev->hard_header_parse = uml_net_header_parse; - (*transport->kern->init)(dev, init); dev->mtu = transport->user->max_packet; @@ -364,21 +330,29 @@ static int eth_configure(int n, void *in } lp = dev->priv; - INIT_LIST_HEAD(&lp->list); - spin_lock_init(&lp->lock); - lp->dev = dev; - lp->fd = -1; - lp->mac = { 0xfe, 0xfd, 0x0, 0x0, 0x0, 0x0 }; - lp->have_mac = device->have_mac; - lp->protocol = transport->kern->protocol; - lp->open = transport->user->open; - lp->close = transport->user->close; - lp->remove = transport->user->remove; - lp->read = transport->kern->read; - lp->write = transport->kern->write; - lp->add_address = transport->user->add_address; - lp->delete_address = transport->user->delete_address; - lp->set_mtu = transport->user->set_mtu; + /* lp.user is the first four bytes of the transport data, which + * has already been initialized. This structure assignment will + * overwrite that, so we make sure that .user gets overwritten with + * what it already has. + */ + save = lp->user[0]; + *lp = ((struct uml_net_private) + { .list = LIST_HEAD_INIT(lp->list), + .lock = SPIN_LOCK_UNLOCKED, + .dev = dev, + .fd = -1, + .mac = { 0xfe, 0xfd, 0x0, 0x0, 0x0, 0x0}, + .have_mac = device->have_mac, + .protocol = transport->kern->protocol, + .open = transport->user->open, + .close = transport->user->close, + .remove = transport->user->remove, + .read = transport->kern->read, + .write = transport->kern->write, + .add_address = transport->user->add_address, + .delete_address = transport->user->delete_address, + .set_mtu = transport->user->set_mtu, + .user = { save } }); init_timer(&lp->tl); lp->tl.function = uml_net_user_timer_expire; @@ -611,7 +585,8 @@ static int net_remove(char *str) unregister_netdev(dev); list_del(&device->list); - free_netdev(device); + kfree(device); + free_netdev(dev); return(0); } diff -puN arch/um/drivers/net_user.c~Main-uml-patch-no-skas arch/um/drivers/net_user.c --- uml-linux-2.6.7/arch/um/drivers/net_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.469326136 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/net_user.c 2004-06-29 21:02:55.713289048 +0200 @@ -26,8 +26,7 @@ int tap_open_common(void *dev, char *gat if(gate_addr == NULL) return(0); if(sscanf(gate_addr, "%d.%d.%d.%d", &tap_addr[0], &tap_addr[1], &tap_addr[2], &tap_addr[3]) != 4){ - printk("Invalid tap IP address - '%s'\n", - gate_addr); + printk("Invalid tap IP address - '%s'\n", gate_addr); return(-EINVAL); } return(0); @@ -60,18 +59,18 @@ void read_output(int fd, char *output, i } *output = '\0'; - if(read(fd, &remain, sizeof(remain)) != sizeof(remain)){ - printk("read_output - read of length failed, errno = %d\n", - errno); + n = os_read_file(fd, &remain, sizeof(remain)); + if(n != sizeof(remain)){ + printk("read_output - read of length failed, err = %d\n", -n); return; } while(remain != 0){ n = (remain < len) ? remain : len; - actual = read(fd, output, n); + actual = os_read_file(fd, output, n); if(actual != n){ printk("read_output - read of data failed, " - "errno = %d\n", errno); + "err = %d\n", -actual); return; } remain -= actual; @@ -83,13 +82,12 @@ int net_read(int fd, void *buf, int len) { int n; - while(((n = read(fd, buf, len)) < 0) && (errno == EINTR)) ; + n = os_read_file(fd, buf, len); - if(n < 0){ - if(errno == EAGAIN) return(0); - return(-errno); - } - else if(n == 0) return(-ENOTCONN); + if(n == -EAGAIN) + return(0); + else if(n == 0) + return(-ENOTCONN); return(n); } @@ -112,13 +110,13 @@ int net_write(int fd, void *buf, int len { int n; - while(((n = write(fd, buf, len)) < 0) && (errno == EINTR)) ; - if(n < 0){ - if(errno == EAGAIN) return(0); - return(-errno); - } - else if(n == 0) return(-ENOTCONN); - return(n); + n = os_write_file(fd, buf, len); + + if(n == -EAGAIN) + return(0); + else if(n == 0) + return(-ENOTCONN); + return(n); } int net_send(int fd, void *buf, int len) @@ -157,7 +155,7 @@ static void change_pre_exec(void *arg) { struct change_pre_exec_data *data = arg; - close(data->close_me); + os_close_file(data->close_me); dup2(data->stdout, 1); } @@ -167,15 +165,15 @@ static int change_tramp(char **argv, cha struct change_pre_exec_data pe_data; err = os_pipe(fds, 1, 0); - if(err){ - printk("change_tramp - pipe failed, errno = %d\n", -err); + if(err < 0){ + printk("change_tramp - pipe failed, err = %d\n", -err); return(err); } pe_data.close_me = fds[0]; pe_data.stdout = fds[1]; pid = run_helper(change_pre_exec, &pe_data, argv, NULL); - close(fds[1]); + os_close_file(fds[1]); read_output(fds[0], output, output_len); waitpid(pid, NULL, 0); return(pid); diff -puN arch/um/drivers/null.c~Main-uml-patch-no-skas arch/um/drivers/null.c --- uml-linux-2.6.7/arch/um/drivers/null.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.470325984 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/null.c 2004-06-29 21:02:55.713289048 +0200 @@ -5,7 +5,6 @@ #include #include -#include #include "chan_user.h" #include "os.h" diff -puN arch/um/drivers/port_kern.c~Main-uml-patch-no-skas arch/um/drivers/port_kern.c --- uml-linux-2.6.7/arch/um/drivers/port_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.471325832 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/port_kern.c 2004-06-29 21:02:55.713289048 +0200 @@ -6,6 +6,7 @@ #include "linux/list.h" #include "linux/sched.h" #include "linux/slab.h" +#include "linux/interrupt.h" #include "linux/irq.h" #include "linux/spinlock.h" #include "linux/errno.h" @@ -14,6 +15,7 @@ #include "kern_util.h" #include "kern.h" #include "irq_user.h" +#include "irq_kern.h" #include "port.h" #include "init.h" #include "os.h" @@ -38,21 +40,21 @@ struct port_dev { struct connection { struct list_head list; int fd; - int helper_pid; + int helper_pid; int socket[2]; int telnetd_pid; struct port_list *port; }; -static void pipe_interrupt(int irq, void *data, struct pt_regs *regs) +static irqreturn_t pipe_interrupt(int irq, void *data, struct pt_regs *regs) { struct connection *conn = data; int fd; - fd = os_rcv_fd(conn->socket[0], &conn->helper_pid); + fd = os_rcv_fd(conn->socket[0], &conn->helper_pid); if(fd < 0){ if(fd == -EAGAIN) - return; + return(IRQ_NONE); printk(KERN_ERR "pipe_interrupt : os_rcv_fd returned %d\n", -fd); @@ -65,6 +67,7 @@ static void pipe_interrupt(int irq, void list_add(&conn->list, &conn->port->connections); up(&conn->port->sem); + return(IRQ_HANDLED); } static int port_accept(struct port_list *port) @@ -102,8 +105,7 @@ static int port_accept(struct port_list } list_add(&conn->list, &port->pending); - ret = 1; - goto out; + return(1); out_free: kfree(conn); @@ -138,12 +140,13 @@ void port_work_proc(void *unused) DECLARE_WORK(port_work, port_work_proc, NULL); -static void port_interrupt(int irq, void *data, struct pt_regs *regs) +static irqreturn_t port_interrupt(int irq, void *data, struct pt_regs *regs) { struct port_list *port = data; port->has_connection = 1; schedule_work(&port_work); + return(IRQ_HANDLED); } void *port_data(int port_num) diff -puN arch/um/drivers/port_user.c~Main-uml-patch-no-skas arch/um/drivers/port_user.c --- uml-linux-2.6.7/arch/um/drivers/port_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.473325528 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/port_user.c 2004-06-29 21:02:55.714288896 +0200 @@ -47,10 +47,12 @@ void *port_init(char *str, int device, s return(NULL); } - if((kern_data = port_data(port)) == NULL) + kern_data = port_data(port); + if(kern_data == NULL) return(NULL); - if((data = um_kmalloc(sizeof(*data))) == NULL) + data = um_kmalloc(sizeof(*data)); + if(data == NULL) goto err; *data = ((struct port_chan) { .raw = opts->raw, @@ -90,7 +92,7 @@ void port_close(int fd, void *d) struct port_chan *data = d; port_remove_dev(data->kernel_data); - close(fd); + os_close_file(fd); } int port_console_write(int fd, const char *buf, int n, void *d) @@ -130,11 +132,15 @@ int port_listen_fd(int port) goto out; } - if((listen(fd, 1) < 0) || (os_set_fd_block(fd, 0))){ + if(listen(fd, 1) < 0){ err = -errno; goto out; } + err = os_set_fd_block(fd, 0); + if(err < 0) + goto out; + return(fd); out: os_close_file(fd); @@ -153,10 +159,10 @@ void port_pre_exec(void *arg) dup2(data->sock_fd, 0); dup2(data->sock_fd, 1); dup2(data->sock_fd, 2); - close(data->sock_fd); + os_close_file(data->sock_fd); dup2(data->pipe_fd, 3); os_shutdown_socket(3, 1, 0); - close(data->pipe_fd); + os_close_file(data->pipe_fd); } int port_connection(int fd, int *socket, int *pid_out) @@ -166,11 +172,12 @@ int port_connection(int fd, int *socket, "/usr/lib/uml/port-helper", NULL }; struct port_pre_exec_data data; - if((new = os_accept_connection(fd)) < 0) - return(-errno); + new = os_accept_connection(fd); + if(new < 0) + return(new); err = os_pipe(socket, 0, 0); - if(err) + if(err < 0) goto out_close; data = ((struct port_pre_exec_data) @@ -186,11 +193,11 @@ int port_connection(int fd, int *socket, out_shutdown: os_shutdown_socket(socket[0], 1, 1); - close(socket[0]); + os_close_file(socket[0]); os_shutdown_socket(socket[1], 1, 1); - close(socket[1]); + os_close_file(socket[1]); out_close: - close(new); + os_close_file(new); return(err); } diff -puN arch/um/drivers/pty.c~Main-uml-patch-no-skas arch/um/drivers/pty.c --- uml-linux-2.6.7/arch/um/drivers/pty.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.474325376 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/pty.c 2004-06-29 21:02:55.714288896 +0200 @@ -7,12 +7,12 @@ #include #include #include -#include #include #include "chan_user.h" #include "user.h" #include "user_util.h" #include "kern_util.h" +#include "os.h" struct pty_chan { void (*announce)(char *dev_name, int dev); @@ -26,7 +26,8 @@ void *pty_chan_init(char *str, int devic { struct pty_chan *data; - if((data = um_kmalloc(sizeof(*data))) == NULL) return(NULL); + data = um_kmalloc(sizeof(*data)); + if(data == NULL) return(NULL); *data = ((struct pty_chan) { .announce = opts->announce, .dev = device, .raw = opts->raw }); @@ -39,7 +40,8 @@ int pts_open(int input, int output, int char *dev; int fd; - if((fd = get_pty()) < 0){ + fd = get_pty(); + if(fd < 0){ printk("open_pts : Failed to open pts\n"); return(-errno); } @@ -57,29 +59,27 @@ int pts_open(int input, int output, int int getmaster(char *line) { - struct stat stb; char *pty, *bank, *cp; - int master; + int master, err; pty = &line[strlen("/dev/ptyp")]; for (bank = "pqrs"; *bank; bank++) { line[strlen("/dev/pty")] = *bank; *pty = '0'; - if (stat(line, &stb) < 0) + if (os_stat_file(line, NULL) < 0) break; for (cp = "0123456789abcdef"; *cp; cp++) { *pty = *cp; - master = open(line, O_RDWR); + master = os_open_file(line, of_rdwr(OPENFLAGS()), 0); if (master >= 0) { char *tp = &line[strlen("/dev/")]; - int ok; /* verify slave side is usable */ *tp = 't'; - ok = access(line, R_OK|W_OK) == 0; + err = os_access(line, OS_ACC_RW_OK); *tp = 'p'; - if (ok) return(master); - (void) close(master); + if(err == 0) return(master); + (void) os_close_file(master); } } } diff -puN arch/um/drivers/slip_user.c~Main-uml-patch-no-skas arch/um/drivers/slip_user.c --- uml-linux-2.6.7/arch/um/drivers/slip_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.475325224 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/slip_user.c 2004-06-29 21:02:55.714288896 +0200 @@ -4,11 +4,9 @@ #include #include #include -#include #include #include #include -#include #include #include "user_util.h" #include "kern_util.h" @@ -65,9 +63,9 @@ static void slip_pre_exec(void *arg) { struct slip_pre_exec_data *data = arg; - if(data->stdin != -1) dup2(data->stdin, 0); + if(data->stdin >= 0) dup2(data->stdin, 0); dup2(data->stdout, 1); - if(data->close_me != -1) close(data->close_me); + if(data->close_me >= 0) os_close_file(data->close_me); } static int slip_tramp(char **argv, int fd) @@ -77,8 +75,8 @@ static int slip_tramp(char **argv, int f int status, pid, fds[2], err, output_len; err = os_pipe(fds, 1, 0); - if(err){ - printk("slip_tramp : pipe failed, errno = %d\n", -err); + if(err < 0){ + printk("slip_tramp : pipe failed, err = %d\n", -err); return(err); } @@ -96,7 +94,7 @@ static int slip_tramp(char **argv, int f printk("slip_tramp : failed to allocate output " "buffer\n"); - close(fds[1]); + os_close_file(fds[1]); read_output(fds[0], output, output_len); if(output != NULL){ printk("%s", output); @@ -105,7 +103,7 @@ static int slip_tramp(char **argv, int f if(waitpid(pid, &status, 0) < 0) err = errno; else if(!WIFEXITED(status) || (WEXITSTATUS(status) != 0)){ printk("'%s' didn't exit with status 0\n", argv[0]); - err = EINVAL; + err = -EINVAL; } } return(err); @@ -118,15 +116,17 @@ static int slip_open(void *data) char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")]; char *argv[] = { "uml_net", version_buf, "slip", "up", gate_buf, NULL }; - int sfd, mfd, disc, sencap, err; + int sfd, mfd, err; - if((mfd = get_pty()) < 0){ - printk("umn : Failed to open pty\n"); - return(-1); + mfd = get_pty(); + if(mfd < 0){ + printk("umn : Failed to open pty, err = %d\n", -mfd); + return(mfd); } - if((sfd = os_open_file(ptsname(mfd), of_rdwr(OPENFLAGS()), 0)) < 0){ - printk("Couldn't open tty for slip line\n"); - return(-1); + sfd = os_open_file(ptsname(mfd), of_rdwr(OPENFLAGS()), 0); + if(sfd < 0){ + printk("Couldn't open tty for slip line, err = %d\n", -sfd); + return(sfd); } if(set_up_tty(sfd)) return(-1); pri->slave = sfd; @@ -138,28 +138,23 @@ static int slip_open(void *data) err = slip_tramp(argv, sfd); - if(err != 0){ - printk("slip_tramp failed - errno = %d\n", err); - return(-err); + if(err < 0){ + printk("slip_tramp failed - err = %d\n", -err); + return(err); } - if(ioctl(pri->slave, SIOCGIFNAME, pri->name) < 0){ - printk("SIOCGIFNAME failed, errno = %d\n", errno); - return(-errno); + err = os_get_ifname(pri->slave, pri->name); + if(err < 0){ + printk("get_ifname failed, err = %d\n", -err); + return(err); } iter_addresses(pri->dev, open_addr, pri->name); } else { - disc = N_SLIP; - if(ioctl(sfd, TIOCSETD, &disc) < 0){ - printk("Failed to set slip line discipline - " - "errno = %d\n", errno); - return(-errno); - } - sencap = 0; - if(ioctl(sfd, SIOCSIFENCAP, &sencap) < 0){ - printk("Failed to set slip encapsulation - " - "errno = %d\n", errno); - return(-errno); + err = os_set_slip(sfd); + if(err < 0){ + printk("Failed to set slip discipline encapsulation - " + "err = %d\n", -err); + return(err); } } return(mfd); @@ -181,9 +176,9 @@ static void slip_close(int fd, void *dat err = slip_tramp(argv, -1); if(err != 0) - printk("slip_tramp failed - errno = %d\n", err); - close(fd); - close(pri->slave); + printk("slip_tramp failed - errno = %d\n", -err); + os_close_file(fd); + os_close_file(pri->slave); pri->slave = -1; } @@ -243,7 +238,7 @@ static void slip_add_addr(unsigned char { struct slip_data *pri = data; - if(pri->slave == -1) return; + if(pri->slave < 0) return; open_addr(addr, netmask, pri->name); } @@ -252,7 +247,7 @@ static void slip_del_addr(unsigned char { struct slip_data *pri = data; - if(pri->slave == -1) return; + if(pri->slave < 0) return; close_addr(addr, netmask, pri->name); } diff -puN arch/um/drivers/slirp_user.c~Main-uml-patch-no-skas arch/um/drivers/slirp_user.c --- uml-linux-2.6.7/arch/um/drivers/slirp_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.476325072 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/slirp_user.c 2004-06-29 21:02:55.715288744 +0200 @@ -4,7 +4,6 @@ #include #include #include -#include #include #include #include @@ -48,15 +47,15 @@ static int slirp_tramp(char **argv, int return(pid); } - + +/* XXX This is just a trivial wrapper around os_pipe */ static int slirp_datachan(int *mfd, int *sfd) { int fds[2], err; err = os_pipe(fds, 1, 1); - if(err){ - printk("slirp_datachan: Failed to open pipe, errno = %d\n", - -err); + if(err < 0){ + printk("slirp_datachan: Failed to open pipe, err = %d\n", -err); return(err); } @@ -77,7 +76,7 @@ static int slirp_open(void *data) pid = slirp_tramp(pri->argw.argv, sfd); if(pid < 0){ - printk("slirp_tramp failed - errno = %d\n", pid); + printk("slirp_tramp failed - errno = %d\n", -pid); os_close_file(sfd); os_close_file(mfd); return(pid); @@ -97,8 +96,8 @@ static void slirp_close(int fd, void *da struct slirp_data *pri = data; int status,err; - close(fd); - close(pri->slave); + os_close_file(fd); + os_close_file(pri->slave); pri->slave = -1; diff -puN arch/um/drivers/ssl.c~Main-uml-patch-no-skas arch/um/drivers/ssl.c --- uml-linux-2.6.7/arch/um/drivers/ssl.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.477324920 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/ssl.c 2004-06-29 21:02:55.715288744 +0200 @@ -10,6 +10,7 @@ #include "linux/major.h" #include "linux/mm.h" #include "linux/init.h" +#include "linux/console.h" #include "asm/termbits.h" #include "asm/irq.h" #include "line.h" @@ -53,8 +54,9 @@ static int ssl_remove(char *str); static struct line_driver driver = { .name = "UML serial line", - .devfs_name = "tts/%d", - .major = TTYAUX_MAJOR, + .device_name = "ttS", + .devfs_name = "tts/", + .major = TTY_MAJOR, .minor_start = 64, .type = TTY_DRIVER_TYPE_SERIAL, .subtype = 0, @@ -149,6 +151,9 @@ static int ssl_ioctl(struct tty_struct * case TCSETSW: case TCGETA: case TIOCMGET: + case TCSBRK: + case TCSBRKP: + case TIOCMSET: ret = -ENOIOCTLCMD; break; default: @@ -212,6 +217,37 @@ static struct tty_operations ssl_ops = { */ static int ssl_init_done = 0; +static void ssl_console_write(struct console *c, const char *string, + unsigned len) +{ + struct line *line = &serial_lines[c->index]; + if(ssl_init_done) + down(&line->sem); + console_write_chan(&line->chan_list, string, len); + if(ssl_init_done) + up(&line->sem); +} + +static struct tty_driver *ssl_console_device(struct console *c, int *index) +{ + *index = c->index; + return ssl_driver; +} + +static int ssl_console_setup(struct console *co, char *options) +{ + return(0); +} + +static struct console ssl_cons = { + name: "ttyS", + write: ssl_console_write, + device: ssl_console_device, + setup: ssl_console_setup, + flags: CON_PRINTBUFFER, + index: -1, +}; + int ssl_init(void) { char *new_title; @@ -227,17 +263,18 @@ int ssl_init(void) new_title = add_xterm_umid(opts.xterm_title); if(new_title != NULL) opts.xterm_title = new_title; + register_console(&ssl_cons); ssl_init_done = 1; return(0); } -__initcall(ssl_init); +late_initcall(ssl_init); static int ssl_chan_setup(char *str) { - line_setup(serial_lines, sizeof(serial_lines)/sizeof(serial_lines[0]), - str, 1); - return(1); + return(line_setup(serial_lines, + sizeof(serial_lines)/sizeof(serial_lines[0]), + str, 1)); } __setup("ssl", ssl_chan_setup); diff -puN arch/um/drivers/stdio_console.c~Main-uml-patch-no-skas arch/um/drivers/stdio_console.c --- uml-linux-2.6.7/arch/um/drivers/stdio_console.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.478324768 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/stdio_console.c 2004-06-29 21:02:55.715288744 +0200 @@ -83,7 +83,8 @@ static int con_remove(char *str); static struct line_driver driver = { .name = "UML console", - .devfs_name = "vc/%d", + .device_name = "tty", + .devfs_name = "vc/", .major = TTY_MAJOR, .minor_start = 0, .type = TTY_DRIVER_TYPE_CONSOLE, @@ -159,6 +160,15 @@ static int chars_in_buffer(struct tty_st static int con_init_done = 0; +static struct tty_operations console_ops = { + .open = con_open, + .close = con_close, + .write = con_write, + .chars_in_buffer = chars_in_buffer, + .set_termios = set_termios, + .write_room = line_write_room, +}; + int stdio_init(void) { char *new_title; @@ -166,7 +176,8 @@ int stdio_init(void) printk(KERN_INFO "Initializing stdio console driver\n"); console_driver = line_register_devfs(&console_lines, &driver, - &console_ops, vts, sizeof(vts)/sizeof(vts[0])); + &console_ops, vts, + sizeof(vts)/sizeof(vts[0])); lines_init(vts, sizeof(vts)/sizeof(vts[0])); @@ -178,24 +189,19 @@ int stdio_init(void) return(0); } -__initcall(stdio_init); +late_initcall(stdio_init); static void console_write(struct console *console, const char *string, unsigned len) { - if(con_init_done) down(&vts[console->index].sem); - console_write_chan(&vts[console->index].chan_list, string, len); - if(con_init_done) up(&vts[console->index].sem); -} + struct line *line = &vts[console->index]; -static struct tty_operations console_ops = { - .open = con_open, - .close = con_close, - .write = con_write, - .chars_in_buffer = chars_in_buffer, - .set_termios = set_termios, - .write_room = line_write_room, -}; + if(con_init_done) + down(&line->sem); + console_write_chan(&line->chan_list, string, len); + if(con_init_done) + up(&line->sem); +} static struct tty_driver *console_device(struct console *c, int *index) { @@ -208,22 +214,28 @@ static int console_setup(struct console return(0); } -static struct console stdiocons = INIT_CONSOLE("tty", console_write, - console_device, console_setup, - CON_PRINTBUFFER); +static struct console stdiocons = { + name: "tty", + write: console_write, + device: console_device, + setup: console_setup, + flags: CON_PRINTBUFFER, + index: -1, +}; -static void __init stdio_console_init(void) +static int __init stdio_console_init(void) { INIT_LIST_HEAD(&vts[0].chan_list); list_add(&init_console_chan.list, &vts[0].chan_list); register_console(&stdiocons); + return(0); } + console_initcall(stdio_console_init); static int console_chan_setup(char *str) { - line_setup(vts, sizeof(vts)/sizeof(vts[0]), str, 1); - return(1); + return(line_setup(vts, sizeof(vts)/sizeof(vts[0]), str, 1)); } __setup("con", console_chan_setup); diff -puN arch/um/drivers/tty.c~Main-uml-patch-no-skas arch/um/drivers/tty.c --- uml-linux-2.6.7/arch/um/drivers/tty.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.479324616 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/tty.c 2004-06-29 21:02:55.715288744 +0200 @@ -5,7 +5,6 @@ #include #include -#include #include #include #include "chan_user.h" @@ -30,7 +29,8 @@ void *tty_chan_init(char *str, int devic } str++; - if((data = um_kmalloc(sizeof(*data))) == NULL) + data = um_kmalloc(sizeof(*data)); + if(data == NULL) return(NULL); *data = ((struct tty_chan) { .dev = str, .raw = opts->raw }); diff -puN arch/um/drivers/ubd_kern.c~Main-uml-patch-no-skas arch/um/drivers/ubd_kern.c --- uml-linux-2.6.7/arch/um/drivers/ubd_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.480324464 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/ubd_kern.c 2004-06-29 21:02:55.717288440 +0200 @@ -8,6 +8,13 @@ * old style ubd by setting UBD_SHIFT to 0 * 2002-09-27...2002-10-18 massive tinkering for 2.5 * partitions have changed in 2.5 + * 2003-01-29 more tinkering for 2.5.59-1 + * This should now address the sysfs problems and has + * the symlink for devfs to allow for booting with + * the common /dev/ubd/discX/... names rather than + * only /dev/ubdN/discN this version also has lots of + * clean ups preparing for ubd-many. + * James McMechan */ #define MAJOR_NR UBD_MAJOR @@ -40,9 +47,12 @@ #include "mconsole_kern.h" #include "init.h" #include "irq_user.h" +#include "irq_kern.h" #include "ubd_user.h" #include "2_5compat.h" #include "os.h" +#include "mem.h" +#include "mem_kern.h" static spinlock_t ubd_io_lock = SPIN_LOCK_UNLOCKED; static spinlock_t ubd_lock = SPIN_LOCK_UNLOCKED; @@ -56,6 +66,10 @@ static int ubd_ioctl(struct inode * inod #define MAX_DEV (8) +/* Changed in early boot */ +static int ubd_do_mmap = 0; +#define UBD_MMAP_BLOCK_SIZE PAGE_SIZE + static struct block_device_operations ubd_blops = { .owner = THIS_MODULE, .open = ubd_open, @@ -67,7 +81,7 @@ static struct block_device_operations ub static request_queue_t *ubd_queue; /* Protected by ubd_lock */ -static int fake_major = 0; +static int fake_major = MAJOR_NR; static struct gendisk *ubd_gendisk[MAX_DEV]; static struct gendisk *fake_gendisk[MAX_DEV]; @@ -96,13 +110,19 @@ struct cow { struct ubd { char *file; - int is_dir; int count; int fd; __u64 size; struct openflags boot_openflags; struct openflags openflags; + int no_cow; struct cow cow; + + int map_writes; + int map_reads; + int nomap_writes; + int nomap_reads; + int write_maps; }; #define DEFAULT_COW { \ @@ -115,21 +135,28 @@ struct ubd { #define DEFAULT_UBD { \ .file = NULL, \ - .is_dir = 0, \ .count = 0, \ .fd = -1, \ .size = -1, \ .boot_openflags = OPEN_FLAGS, \ .openflags = OPEN_FLAGS, \ + .no_cow = 0, \ .cow = DEFAULT_COW, \ + .map_writes = 0, \ + .map_reads = 0, \ + .nomap_writes = 0, \ + .nomap_reads = 0, \ + .write_maps = 0, \ } struct ubd ubd_dev[MAX_DEV] = { [ 0 ... MAX_DEV - 1 ] = DEFAULT_UBD }; static int ubd0_init(void) { - if(ubd_dev[0].file == NULL) - ubd_dev[0].file = "root_fs"; + struct ubd *dev = &ubd_dev[0]; + + if(dev->file == NULL) + dev->file = "root_fs"; return(0); } @@ -196,19 +223,46 @@ __uml_help(fake_ide_setup, " Create ide0 entries that map onto ubd devices.\n\n" ); +static int parse_unit(char **ptr) +{ + char *str = *ptr, *end; + int n = -1; + + if(isdigit(*str)) { + n = simple_strtoul(str, &end, 0); + if(end == str) + return(-1); + *ptr = end; + } + else if (('a' <= *str) && (*str <= 'h')) { + n = *str - 'a'; + str++; + *ptr = str; + } + return(n); +} + static int ubd_setup_common(char *str, int *index_out) { + struct ubd *dev; struct openflags flags = global_openflags; char *backing_file; int n, err; if(index_out) *index_out = -1; - n = *str++; + n = *str; if(n == '='){ - static int fake_major_allowed = 1; char *end; int major; + str++; + if(!strcmp(str, "mmap")){ + CHOOSE_MODE(printk("mmap not supported by the ubd " + "driver in tt mode\n"), + ubd_do_mmap = 1); + return(0); + } + if(!strcmp(str, "sync")){ global_openflags.s = 1; return(0); @@ -220,20 +274,14 @@ static int ubd_setup_common(char *str, i return(1); } - if(!fake_major_allowed){ - printk(KERN_ERR "Can't assign a fake major twice\n"); - return(1); - } - err = 1; spin_lock(&ubd_lock); - if(!fake_major_allowed){ + if(fake_major != MAJOR_NR){ printk(KERN_ERR "Can't assign a fake major twice\n"); goto out1; } fake_major = major; - fake_major_allowed = 0; printk(KERN_INFO "Setting extra ubd major number to %d\n", major); @@ -243,25 +291,23 @@ static int ubd_setup_common(char *str, i return(err); } - if(n < '0'){ - printk(KERN_ERR "ubd_setup : index out of range\n"); } - - if((n >= '0') && (n <= '9')) n -= '0'; - else if((n >= 'a') && (n <= 'z')) n -= 'a'; - else { - printk(KERN_ERR "ubd_setup : device syntax invalid\n"); + n = parse_unit(&str); + if(n < 0){ + printk(KERN_ERR "ubd_setup : couldn't parse unit number " + "'%s'\n", str); return(1); } if(n >= MAX_DEV){ - printk(KERN_ERR "ubd_setup : index out of range " - "(%d devices)\n", MAX_DEV); + printk(KERN_ERR "ubd_setup : index %d out of range " + "(%d devices)\n", n, MAX_DEV); return(1); } err = 1; spin_lock(&ubd_lock); - if(ubd_dev[n].file != NULL){ + dev = &ubd_dev[n]; + if(dev->file != NULL){ printk(KERN_ERR "ubd_setup : device already configured\n"); goto out2; } @@ -276,6 +322,11 @@ static int ubd_setup_common(char *str, i flags.s = 1; str++; } + if (*str == 'd'){ + dev->no_cow = 1; + str++; + } + if(*str++ != '='){ printk(KERN_ERR "ubd_setup : Expected '='\n"); goto out2; @@ -284,14 +335,17 @@ static int ubd_setup_common(char *str, i err = 0; backing_file = strchr(str, ','); if(backing_file){ - *backing_file = '\0'; - backing_file++; + if(dev->no_cow) + printk(KERN_ERR "Can't specify both 'd' and a " + "cow file\n"); + else { + *backing_file = '\0'; + backing_file++; + } } - ubd_dev[n].file = str; - if(ubd_is_dir(ubd_dev[n].file)) - ubd_dev[n].is_dir = 1; - ubd_dev[n].cow.file = backing_file; - ubd_dev[n].boot_openflags = flags; + dev->file = str; + dev->cow.file = backing_file; + dev->boot_openflags = flags; out2: spin_unlock(&ubd_lock); return(err); @@ -321,8 +375,7 @@ __uml_help(ubd_setup, static int fakehd_set = 0; static int fakehd(char *str) { - printk(KERN_INFO - "fakehd : Changing ubd name to \"hd\".\n"); + printk(KERN_INFO "fakehd : Changing ubd name to \"hd\".\n"); fakehd_set = 1; return 1; } @@ -368,32 +421,42 @@ static void ubd_handler(void) { struct io_thread_req req; struct request *rq = elv_next_request(ubd_queue); - int n; + int n, err; do_ubd = NULL; intr_count++; n = read_ubd_fs(thread_fd, &req, sizeof(req)); if(n != sizeof(req)){ printk(KERN_ERR "Pid %d - spurious interrupt in ubd_handler, " - "errno = %d\n", os_getpid(), -n); + "err = %d\n", os_getpid(), -n); spin_lock(&ubd_io_lock); end_request(rq, 0); spin_unlock(&ubd_io_lock); return; } - if((req.offset != ((__u64) (rq->sector)) << 9) || - (req.length != (rq->current_nr_sectors) << 9)) + if((req.op != UBD_MMAP) && + ((req.offset != ((__u64) (rq->sector)) << 9) || + (req.length != (rq->current_nr_sectors) << 9))) panic("I/O op mismatch"); + if(req.map_fd != -1){ + err = physmem_subst_mapping(req.buffer, req.map_fd, + req.map_offset, 1); + if(err) + printk("ubd_handler - physmem_subst_mapping failed, " + "err = %d\n", -err); + } + ubd_finish(rq, req.error); reactivate_fd(thread_fd, UBD_IRQ); do_ubd_request(ubd_queue); } -static void ubd_intr(int irq, void *dev, struct pt_regs *unused) +static irqreturn_t ubd_intr(int irq, void *dev, struct pt_regs *unused) { ubd_handler(); + return(IRQ_HANDLED); } /* Only changed by ubd_init, which is an initcall. */ @@ -417,10 +480,14 @@ static int ubd_file_size(struct ubd *dev static void ubd_close(struct ubd *dev) { + if(ubd_do_mmap) + physmem_forget_descriptor(dev->fd); os_close_file(dev->fd); if(dev->cow.file == NULL) return; + if(ubd_do_mmap) + physmem_forget_descriptor(dev->cow.fd); os_close_file(dev->cow.fd); vfree(dev->cow.bitmap); dev->cow.bitmap = NULL; @@ -429,18 +496,20 @@ static void ubd_close(struct ubd *dev) static int ubd_open_dev(struct ubd *dev) { struct openflags flags; - int err, n, create_cow, *create_ptr; + char **back_ptr; + int err, create_cow, *create_ptr; + dev->openflags = dev->boot_openflags; create_cow = 0; create_ptr = (dev->cow.file != NULL) ? &create_cow : NULL; - dev->fd = open_ubd_file(dev->file, &dev->openflags, &dev->cow.file, + back_ptr = dev->no_cow ? NULL : &dev->cow.file; + dev->fd = open_ubd_file(dev->file, &dev->openflags, back_ptr, &dev->cow.bitmap_offset, &dev->cow.bitmap_len, &dev->cow.data_offset, create_ptr); if((dev->fd == -ENOENT) && create_cow){ - n = dev - ubd_dev; dev->fd = create_cow_file(dev->file, dev->cow.file, - dev->openflags, 1 << 9, + dev->openflags, 1 << 9, PAGE_SIZE, &dev->cow.bitmap_offset, &dev->cow.bitmap_len, &dev->cow.data_offset); @@ -455,13 +524,17 @@ static int ubd_open_dev(struct ubd *dev) if(dev->cow.file != NULL){ err = -ENOMEM; dev->cow.bitmap = (void *) vmalloc(dev->cow.bitmap_len); - if(dev->cow.bitmap == NULL) goto error; + if(dev->cow.bitmap == NULL){ + printk(KERN_ERR "Failed to vmalloc COW bitmap\n"); + goto error; + } flush_tlb_kernel_vm(); err = read_cow_bitmap(dev->fd, dev->cow.bitmap, dev->cow.bitmap_offset, dev->cow.bitmap_len); - if(err) goto error; + if(err < 0) + goto error; flags = dev->openflags; flags.w = 0; @@ -481,17 +554,31 @@ static int ubd_new_disk(int major, u64 s { struct gendisk *disk; + char from[sizeof("ubd/nnnnn\0")], to[sizeof("discnnnnn/disc\0")]; + int err; disk = alloc_disk(1 << UBD_SHIFT); - if (!disk) - return -ENOMEM; + if(disk == NULL) + return(-ENOMEM); disk->major = major; disk->first_minor = unit << UBD_SHIFT; disk->fops = &ubd_blops; set_capacity(disk, size / 512); - sprintf(disk->disk_name, "ubd"); - sprintf(disk->devfs_name, "ubd/disc%d", unit); + if(major == MAJOR_NR){ + sprintf(disk->disk_name, "ubd%c", 'a' + unit); + sprintf(disk->devfs_name, "ubd/disc%d", unit); + sprintf(from, "ubd/%d", unit); + sprintf(to, "disc%d/disc", unit); + err = devfs_mk_symlink(from, to); + if(err) + printk("ubd_new_disk failed to make link from %s to " + "%s, error = %d\n", from, to, err); + } + else { + sprintf(disk->disk_name, "ubd_fake%d", unit); + sprintf(disk->devfs_name, "ubd_fake/disc%d", unit); + } disk->private_data = &ubd_dev[unit]; disk->queue = ubd_queue; @@ -506,24 +593,21 @@ static int ubd_add(int n) struct ubd *dev = &ubd_dev[n]; int err; - if(dev->is_dir) - return(-EISDIR); - - if (!dev->file) + if(dev->file == NULL) return(-ENODEV); if (ubd_open_dev(dev)) return(-ENODEV); err = ubd_file_size(dev, &dev->size); - if(err) + if(err < 0) return(err); err = ubd_new_disk(MAJOR_NR, dev->size, n, &ubd_gendisk[n]); if(err) return(err); - if(fake_major) + if(fake_major != MAJOR_NR) ubd_new_disk(fake_major, dev->size, n, &fake_gendisk[n]); @@ -561,42 +645,42 @@ static int ubd_config(char *str) return(err); } -static int ubd_get_config(char *dev, char *str, int size, char **error_out) +static int ubd_get_config(char *name, char *str, int size, char **error_out) { - struct ubd *ubd; + struct ubd *dev; char *end; - int major, n = 0; + int n, len = 0; - major = simple_strtoul(dev, &end, 0); - if((*end != '\0') || (end == dev)){ - *error_out = "ubd_get_config : didn't parse major number"; + n = simple_strtoul(name, &end, 0); + if((*end != '\0') || (end == name)){ + *error_out = "ubd_get_config : didn't parse device number"; return(-1); } - if((major >= MAX_DEV) || (major < 0)){ - *error_out = "ubd_get_config : major number out of range"; + if((n >= MAX_DEV) || (n < 0)){ + *error_out = "ubd_get_config : device number out of range"; return(-1); } - ubd = &ubd_dev[major]; + dev = &ubd_dev[n]; spin_lock(&ubd_lock); - if(ubd->file == NULL){ - CONFIG_CHUNK(str, size, n, "", 1); + if(dev->file == NULL){ + CONFIG_CHUNK(str, size, len, "", 1); goto out; } - CONFIG_CHUNK(str, size, n, ubd->file, 0); + CONFIG_CHUNK(str, size, len, dev->file, 0); - if(ubd->cow.file != NULL){ - CONFIG_CHUNK(str, size, n, ",", 0); - CONFIG_CHUNK(str, size, n, ubd->cow.file, 1); + if(dev->cow.file != NULL){ + CONFIG_CHUNK(str, size, len, ",", 0); + CONFIG_CHUNK(str, size, len, dev->cow.file, 1); } - else CONFIG_CHUNK(str, size, n, "", 1); + else CONFIG_CHUNK(str, size, len, "", 1); out: spin_unlock(&ubd_lock); - return(n); + return(len); } static int ubd_remove(char *str) @@ -604,11 +688,9 @@ static int ubd_remove(char *str) struct ubd *dev; int n, err = -ENODEV; - if(!isdigit(*str)) - return(err); /* it should be a number 0-7/a-h */ + n = parse_unit(&str); - n = *str - '0'; - if(n >= MAX_DEV) + if((n < 0) || (n >= MAX_DEV)) return(err); dev = &ubd_dev[n]; @@ -669,7 +751,7 @@ int ubd_init(void) elevator_init(ubd_queue, &elevator_noop); - if (fake_major != 0) { + if (fake_major != MAJOR_NR) { char name[sizeof("ubd_nnn\0")]; snprintf(name, sizeof(name), "ubd_%d", fake_major); @@ -696,6 +778,7 @@ int ubd_driver_init(void){ io_pid = start_io_thread(stack + PAGE_SIZE - sizeof(void *), &thread_fd); if(io_pid < 0){ + io_pid = -1; printk(KERN_ERR "ubd : Failed to start I/O thread (errno = %d) - " "falling back to synchronous I/O\n", -io_pid); @@ -703,8 +786,8 @@ int ubd_driver_init(void){ } err = um_request_irq(UBD_IRQ, thread_fd, IRQ_READ, ubd_intr, SA_INTERRUPT, "ubd", ubd_dev); - if(err != 0) printk(KERN_ERR - "um_request_irq failed - errno = %d\n", -err); + if(err != 0) + printk(KERN_ERR "um_request_irq failed - errno = %d\n", -err); return(err); } @@ -714,15 +797,9 @@ static int ubd_open(struct inode *inode, { struct gendisk *disk = inode->i_bdev->bd_disk; struct ubd *dev = disk->private_data; - int err = -EISDIR; - - if(dev->is_dir == 1) - goto out; + int err = 0; - err = 0; if(dev->count == 0){ - dev->openflags = dev->boot_openflags; - err = ubd_open_dev(dev); if(err){ printk(KERN_ERR "%s: Can't open \"%s\": errno = %d\n", @@ -749,62 +826,156 @@ static int ubd_release(struct inode * in return(0); } -void cowify_req(struct io_thread_req *req, struct ubd *dev) +static void cowify_bitmap(__u64 io_offset, int length, unsigned long *cow_mask, + __u64 *cow_offset, unsigned long *bitmap, + __u64 bitmap_offset, unsigned long *bitmap_words, + __u64 bitmap_len) +{ + __u64 sector = io_offset >> 9; + int i, update_bitmap = 0; + + for(i = 0; i < length >> 9; i++){ + if(cow_mask != NULL) + ubd_set_bit(i, (unsigned char *) cow_mask); + if(ubd_test_bit(sector + i, (unsigned char *) bitmap)) + continue; + + update_bitmap = 1; + ubd_set_bit(sector + i, (unsigned char *) bitmap); + } + + if(!update_bitmap) + return; + + *cow_offset = sector / (sizeof(unsigned long) * 8); + + /* This takes care of the case where we're exactly at the end of the + * device, and *cow_offset + 1 is off the end. So, just back it up + * by one word. Thanks to Lynn Kerby for the fix and James McMechan + * for the original diagnosis. + */ + if(*cow_offset == ((bitmap_len + sizeof(unsigned long) - 1) / + sizeof(unsigned long) - 1)) + (*cow_offset)--; + + bitmap_words[0] = bitmap[*cow_offset]; + bitmap_words[1] = bitmap[*cow_offset + 1]; + + *cow_offset *= sizeof(unsigned long); + *cow_offset += bitmap_offset; +} + +static void cowify_req(struct io_thread_req *req, unsigned long *bitmap, + __u64 bitmap_offset, __u64 bitmap_len) { - int i, update_bitmap, sector = req->offset >> 9; + __u64 sector = req->offset >> 9; + int i; if(req->length > (sizeof(req->sector_mask) * 8) << 9) panic("Operation too long"); + if(req->op == UBD_READ) { for(i = 0; i < req->length >> 9; i++){ - if(ubd_test_bit(sector + i, (unsigned char *) - dev->cow.bitmap)){ + if(ubd_test_bit(sector + i, (unsigned char *) bitmap)) ubd_set_bit(i, (unsigned char *) &req->sector_mask); - } } - } - else { - update_bitmap = 0; - for(i = 0; i < req->length >> 9; i++){ - ubd_set_bit(i, (unsigned char *) - &req->sector_mask); - if(!ubd_test_bit(sector + i, (unsigned char *) - dev->cow.bitmap)) - update_bitmap = 1; - ubd_set_bit(sector + i, (unsigned char *) - dev->cow.bitmap); - } - if(update_bitmap){ - req->cow_offset = sector / (sizeof(unsigned long) * 8); - req->bitmap_words[0] = - dev->cow.bitmap[req->cow_offset]; - req->bitmap_words[1] = - dev->cow.bitmap[req->cow_offset + 1]; - req->cow_offset *= sizeof(unsigned long); - req->cow_offset += dev->cow.bitmap_offset; + } + else cowify_bitmap(req->offset, req->length, &req->sector_mask, + &req->cow_offset, bitmap, bitmap_offset, + req->bitmap_words, bitmap_len); +} + +static int mmap_fd(struct request *req, struct ubd *dev, __u64 offset) +{ + __u64 sector; + unsigned char *bitmap; + int bit, i; + + /* mmap must have been requested on the command line */ + if(!ubd_do_mmap) + return(-1); + + /* The buffer must be page aligned */ + if(((unsigned long) req->buffer % UBD_MMAP_BLOCK_SIZE) != 0) + return(-1); + + /* The request must be a page long */ + if((req->current_nr_sectors << 9) != PAGE_SIZE) + return(-1); + + if(dev->cow.file == NULL) + return(dev->fd); + + sector = offset >> 9; + bitmap = (unsigned char *) dev->cow.bitmap; + bit = ubd_test_bit(sector, bitmap); + + for(i = 1; i < req->current_nr_sectors; i++){ + if(ubd_test_bit(sector + i, bitmap) != bit) + return(-1); + } + + if(bit || (rq_data_dir(req) == WRITE)) + offset += dev->cow.data_offset; + + /* The data on disk must be page aligned */ + if((offset % UBD_MMAP_BLOCK_SIZE) != 0) + return(-1); + + return(bit ? dev->fd : dev->cow.fd); +} + +static int prepare_mmap_request(struct ubd *dev, int fd, __u64 offset, + struct request *req, + struct io_thread_req *io_req) +{ + int err; + + if(rq_data_dir(req) == WRITE){ + /* Writes are almost no-ops since the new data is already in the + * host page cache + */ + dev->map_writes++; + if(dev->cow.file != NULL) + cowify_bitmap(io_req->offset, io_req->length, + &io_req->sector_mask, &io_req->cow_offset, + dev->cow.bitmap, dev->cow.bitmap_offset, + io_req->bitmap_words, + dev->cow.bitmap_len); + } + else { + int w; + + if((dev->cow.file != NULL) && (fd == dev->cow.fd)) + w = 0; + else w = dev->openflags.w; + + if((dev->cow.file != NULL) && (fd == dev->fd)) + offset += dev->cow.data_offset; + + err = physmem_subst_mapping(req->buffer, fd, offset, w); + if(err){ + printk("physmem_subst_mapping failed, err = %d\n", + -err); + return(1); } + dev->map_reads++; } + io_req->op = UBD_MMAP; + io_req->buffer = req->buffer; + return(0); } static int prepare_request(struct request *req, struct io_thread_req *io_req) { struct gendisk *disk = req->rq_disk; struct ubd *dev = disk->private_data; - __u64 block; - int nsect; + __u64 offset; + int len, fd; if(req->rq_status == RQ_INACTIVE) return(1); - if(dev->is_dir){ - strcpy(req->buffer, "HOSTFS:"); - strcat(req->buffer, dev->file); - spin_lock(&ubd_io_lock); - end_request(req, 1); - spin_unlock(&ubd_io_lock); - return(1); - } - if((rq_data_dir(req) == WRITE) && !dev->openflags.w){ printk("Write attempted on readonly ubd device %s\n", disk->disk_name); @@ -814,23 +985,49 @@ static int prepare_request(struct reques return(1); } - block = req->sector; - nsect = req->current_nr_sectors; + offset = ((__u64) req->sector) << 9; + len = req->current_nr_sectors << 9; - io_req->op = rq_data_dir(req) == READ ? UBD_READ : UBD_WRITE; io_req->fds[0] = (dev->cow.file != NULL) ? dev->cow.fd : dev->fd; io_req->fds[1] = dev->fd; + io_req->map_fd = -1; + io_req->cow_offset = -1; + io_req->offset = offset; + io_req->length = len; + io_req->error = 0; + io_req->sector_mask = 0; + + fd = mmap_fd(req, dev, io_req->offset); + if(fd > 0){ + /* If mmapping is otherwise OK, but the first access to the + * page is a write, then it's not mapped in yet. So we have + * to write the data to disk first, then we can map the disk + * page in and continue normally from there. + */ + if((rq_data_dir(req) == WRITE) && !is_remapped(req->buffer)){ + io_req->map_fd = dev->fd; + io_req->map_offset = io_req->offset + + dev->cow.data_offset; + dev->write_maps++; + } + else return(prepare_mmap_request(dev, fd, io_req->offset, req, + io_req)); + } + + if(rq_data_dir(req) == READ) + dev->nomap_reads++; + else dev->nomap_writes++; + + io_req->op = (rq_data_dir(req) == READ) ? UBD_READ : UBD_WRITE; io_req->offsets[0] = 0; io_req->offsets[1] = dev->cow.data_offset; - io_req->offset = ((__u64) block) << 9; - io_req->length = nsect << 9; io_req->buffer = req->buffer; io_req->sectorsize = 1 << 9; - io_req->sector_mask = 0; - io_req->cow_offset = -1; - io_req->error = 0; - if(dev->cow.file != NULL) cowify_req(io_req, dev); + if(dev->cow.file != NULL) + cowify_req(io_req, dev->cow.bitmap, dev->cow.bitmap_offset, + dev->cow.bitmap_len); + return(0); } @@ -841,7 +1038,7 @@ static void do_ubd_request(request_queue int err, n; if(thread_fd == -1){ - while(!list_empty(&q->queue_head)){ + while(!elv_queue_empty(q)){ req = elv_next_request(q); err = prepare_request(req, &io_req); if(!err){ @@ -851,7 +1048,8 @@ static void do_ubd_request(request_queue } } else { - if(do_ubd || list_empty(&q->queue_head)) return; + if(do_ubd || elv_queue_empty(q)) + return; req = elv_next_request(q); err = prepare_request(req, &io_req); if(!err){ @@ -885,7 +1083,7 @@ static int ubd_ioctl(struct inode * inod g.heads = 128; g.sectors = 32; g.cylinders = dev->size / (128 * 32 * 512); - g.start = 2; + g.start = get_start_sect(inode->i_bdev); return(copy_to_user(loc, &g, sizeof(g)) ? -EFAULT : 0); case HDIO_SET_UNMASKINTR: @@ -935,6 +1133,142 @@ static int ubd_ioctl(struct inode * inod return(-EINVAL); } +static int ubd_check_remapped(int fd, unsigned long address, int is_write, + __u64 offset) +{ + __u64 bitmap_offset; + unsigned long new_bitmap[2]; + int i, err, n; + + /* If it's not a write access, we can't do anything about it */ + if(!is_write) + return(0); + + /* We have a write */ + for(i = 0; i < sizeof(ubd_dev) / sizeof(ubd_dev[0]); i++){ + struct ubd *dev = &ubd_dev[i]; + + if((dev->fd != fd) && (dev->cow.fd != fd)) + continue; + + /* It's a write to a ubd device */ + + if(!dev->openflags.w){ + /* It's a write access on a read-only device - probably + * shouldn't happen. If the kernel is trying to change + * something with no intention of writing it back out, + * then this message will clue us in that this needs + * fixing + */ + printk("Write access to mapped page from readonly ubd " + "device %d\n", i); + return(0); + } + + /* It's a write to a writeable ubd device - it must be COWed + * because, otherwise, the page would have been mapped in + * writeable + */ + + if(!dev->cow.file) + panic("Write fault on writeable non-COW ubd device %d", + i); + + /* It should also be an access to the backing file since the + * COW pages should be mapped in read-write + */ + + if(fd == dev->fd) + panic("Write fault on a backing page of ubd " + "device %d\n", i); + + /* So, we do the write, copying the backing data to the COW + * file... + */ + + err = os_seek_file(dev->fd, offset + dev->cow.data_offset); + if(err < 0) + panic("Couldn't seek to %lld in COW file of ubd " + "device %d, err = %d", + offset + dev->cow.data_offset, i, -err); + + n = os_write_file(dev->fd, (void *) address, PAGE_SIZE); + if(n != PAGE_SIZE) + panic("Couldn't copy data to COW file of ubd " + "device %d, err = %d", i, -n); + + /* ... updating the COW bitmap... */ + + cowify_bitmap(offset, PAGE_SIZE, NULL, &bitmap_offset, + dev->cow.bitmap, dev->cow.bitmap_offset, + new_bitmap, dev->cow.bitmap_len); + + err = os_seek_file(dev->fd, bitmap_offset); + if(err < 0) + panic("Couldn't seek to %lld in COW file of ubd " + "device %d, err = %d", bitmap_offset, i, -err); + + n = os_write_file(dev->fd, new_bitmap, sizeof(new_bitmap)); + if(n != sizeof(new_bitmap)) + panic("Couldn't update bitmap of ubd device %d, " + "err = %d", i, -n); + + /* Maybe we can map the COW page in, and maybe we can't. If + * it is a pre-V3 COW file, we can't, since the alignment will + * be wrong. If it is a V3 or later COW file which has been + * moved to a system with a larger page size, then maybe we + * can't, depending on the exact location of the page. + */ + + offset += dev->cow.data_offset; + + /* Remove the remapping, putting the original anonymous page + * back. If the COW file can be mapped in, that is done. + * Otherwise, the COW page is read in. + */ + + if(!physmem_remove_mapping((void *) address)) + panic("Address 0x%lx not remapped by ubd device %d", + address, i); + if((offset % UBD_MMAP_BLOCK_SIZE) == 0) + physmem_subst_mapping((void *) address, dev->fd, + offset, 1); + else { + err = os_seek_file(dev->fd, offset); + if(err < 0) + panic("Couldn't seek to %lld in COW file of " + "ubd device %d, err = %d", offset, i, + -err); + + n = os_read_file(dev->fd, (void *) address, PAGE_SIZE); + if(n != PAGE_SIZE) + panic("Failed to read page from offset %llx of " + "COW file of ubd device %d, err = %d", + offset, i, -n); + } + + return(1); + } + + /* It's not a write on a ubd device */ + return(0); +} + +static struct remapper ubd_remapper = { + .list = LIST_HEAD_INIT(ubd_remapper.list), + .proc = ubd_check_remapped, +}; + +static int ubd_remapper_setup(void) +{ + if(ubd_do_mmap) + register_remapper(&ubd_remapper); + + return(0); +} + +__initcall(ubd_remapper_setup); + /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff -puN arch/um/drivers/ubd_user.c~Main-uml-patch-no-skas arch/um/drivers/ubd_user.c --- uml-linux-2.6.7/arch/um/drivers/ubd_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.481324312 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/ubd_user.c 2004-06-29 21:02:55.718288288 +0200 @@ -11,11 +11,8 @@ #include #include #include -#include #include -#include #include -#include #include #include #include "asm/types.h" @@ -24,146 +21,30 @@ #include "user.h" #include "ubd_user.h" #include "os.h" +#include "cow.h" #include #include -#if __BYTE_ORDER == __BIG_ENDIAN -# define ntohll(x) (x) -# define htonll(x) (x) -#elif __BYTE_ORDER == __LITTLE_ENDIAN -# define ntohll(x) bswap_64(x) -# define htonll(x) bswap_64(x) -#else -#error "__BYTE_ORDER not defined" -#endif - -#define PATH_LEN_V1 256 - -struct cow_header_v1 { - int magic; - int version; - char backing_file[PATH_LEN_V1]; - time_t mtime; - __u64 size; - int sectorsize; -}; - -#define PATH_LEN_V2 MAXPATHLEN - -struct cow_header_v2 { - unsigned long magic; - unsigned long version; - char backing_file[PATH_LEN_V2]; - time_t mtime; - __u64 size; - int sectorsize; -}; - -union cow_header { - struct cow_header_v1 v1; - struct cow_header_v2 v2; -}; - -#define COW_MAGIC 0x4f4f4f4d /* MOOO */ -#define COW_VERSION 2 - -static void sizes(__u64 size, int sectorsize, int bitmap_offset, - unsigned long *bitmap_len_out, int *data_offset_out) -{ - *bitmap_len_out = (size + sectorsize - 1) / (8 * sectorsize); - - *data_offset_out = bitmap_offset + *bitmap_len_out; - *data_offset_out = (*data_offset_out + sectorsize - 1) / sectorsize; - *data_offset_out *= sectorsize; -} - -static int read_cow_header(int fd, int *magic_out, char **backing_file_out, - time_t *mtime_out, __u64 *size_out, - int *sectorsize_out, int *bitmap_offset_out) -{ - union cow_header *header; - char *file; - int err, n; - unsigned long version, magic; - - header = um_kmalloc(sizeof(*header)); - if(header == NULL){ - printk("read_cow_header - Failed to allocate header\n"); - return(-ENOMEM); - } - err = -EINVAL; - n = read(fd, header, sizeof(*header)); - if(n < offsetof(typeof(header->v1), backing_file)){ - printk("read_cow_header - short header\n"); - goto out; - } - - magic = header->v1.magic; - if(magic == COW_MAGIC) { - version = header->v1.version; - } - else if(magic == ntohl(COW_MAGIC)){ - version = ntohl(header->v1.version); - } - else goto out; - - *magic_out = COW_MAGIC; - - if(version == 1){ - if(n < sizeof(header->v1)){ - printk("read_cow_header - failed to read V1 header\n"); - goto out; - } - *mtime_out = header->v1.mtime; - *size_out = header->v1.size; - *sectorsize_out = header->v1.sectorsize; - *bitmap_offset_out = sizeof(header->v1); - file = header->v1.backing_file; - } - else if(version == 2){ - if(n < sizeof(header->v2)){ - printk("read_cow_header - failed to read V2 header\n"); - goto out; - } - *mtime_out = ntohl(header->v2.mtime); - *size_out = ntohll(header->v2.size); - *sectorsize_out = ntohl(header->v2.sectorsize); - *bitmap_offset_out = sizeof(header->v2); - file = header->v2.backing_file; - } - else { - printk("read_cow_header - invalid COW version\n"); - goto out; - } - err = -ENOMEM; - *backing_file_out = uml_strdup(file); - if(*backing_file_out == NULL){ - printk("read_cow_header - failed to allocate backing file\n"); - goto out; - } - err = 0; - out: - kfree(header); - return(err); -} static int same_backing_files(char *from_cmdline, char *from_cow, char *cow) { - struct stat buf1, buf2; + struct uml_stat buf1, buf2; + int err; if(from_cmdline == NULL) return(1); if(!strcmp(from_cmdline, from_cow)) return(1); - if(stat(from_cmdline, &buf1) < 0){ - printk("Couldn't stat '%s', errno = %d\n", from_cmdline, - errno); + err = os_stat_file(from_cmdline, &buf1); + if(err < 0){ + printk("Couldn't stat '%s', err = %d\n", from_cmdline, -err); return(1); } - if(stat(from_cow, &buf2) < 0){ - printk("Couldn't stat '%s', errno = %d\n", from_cow, errno); + err = os_stat_file(from_cow, &buf2); + if(err < 0){ + printk("Couldn't stat '%s', err = %d\n", from_cow, -err); return(1); } - if((buf1.st_dev == buf2.st_dev) && (buf1.st_ino == buf2.st_ino)) + if((buf1.ust_dev == buf2.ust_dev) && (buf1.ust_ino == buf2.ust_ino)) return(1); printk("Backing file mismatch - \"%s\" requested,\n" @@ -174,20 +55,21 @@ static int same_backing_files(char *from static int backing_file_mismatch(char *file, __u64 size, time_t mtime) { - struct stat64 buf; + unsigned long modtime; long long actual; int err; - if(stat64(file, &buf) < 0){ - printk("Failed to stat backing file \"%s\", errno = %d\n", - file, errno); - return(-errno); + err = os_file_modtime(file, &modtime); + if(err < 0){ + printk("Failed to get modification time of backing file " + "\"%s\", err = %d\n", file, -err); + return(err); } err = os_file_size(file, &actual); - if(err){ + if(err < 0){ printk("Failed to get size of backing file \"%s\", " - "errno = %d\n", file, -err); + "err = %d\n", file, -err); return(err); } @@ -196,9 +78,9 @@ static int backing_file_mismatch(char *f "file\n", size, actual); return(-EINVAL); } - if(buf.st_mtime != mtime){ + if(modtime != mtime){ printk("mtime mismatch (%ld vs %ld) of COW header vs backing " - "file\n", mtime, buf.st_mtime); + "file\n", mtime, modtime); return(-EINVAL); } return(0); @@ -209,124 +91,16 @@ int read_cow_bitmap(int fd, void *buf, i int err; err = os_seek_file(fd, offset); - if(err != 0) return(-errno); - err = read(fd, buf, len); - if(err < 0) return(-errno); - return(0); -} + if(err < 0) + return(err); -static int absolutize(char *to, int size, char *from) -{ - char save_cwd[256], *slash; - int remaining; + err = os_read_file(fd, buf, len); + if(err < 0) + return(err); - if(getcwd(save_cwd, sizeof(save_cwd)) == NULL) { - printk("absolutize : unable to get cwd - errno = %d\n", errno); - return(-1); - } - slash = strrchr(from, '/'); - if(slash != NULL){ - *slash = '\0'; - if(chdir(from)){ - *slash = '/'; - printk("absolutize : Can't cd to '%s' - errno = %d\n", - from, errno); - return(-1); - } - *slash = '/'; - if(getcwd(to, size) == NULL){ - printk("absolutize : unable to get cwd of '%s' - " - "errno = %d\n", from, errno); - return(-1); - } - remaining = size - strlen(to); - if(strlen(slash) + 1 > remaining){ - printk("absolutize : unable to fit '%s' into %d " - "chars\n", from, size); - return(-1); - } - strcat(to, slash); - } - else { - if(strlen(save_cwd) + 1 + strlen(from) + 1 > size){ - printk("absolutize : unable to fit '%s' into %d " - "chars\n", from, size); - return(-1); - } - strcpy(to, save_cwd); - strcat(to, "/"); - strcat(to, from); - } - chdir(save_cwd); return(0); } -static int write_cow_header(char *cow_file, int fd, char *backing_file, - int sectorsize, long long *size) -{ - struct cow_header_v2 *header; - struct stat64 buf; - int err; - - err = os_seek_file(fd, 0); - if(err != 0){ - printk("write_cow_header - lseek failed, errno = %d\n", errno); - return(-errno); - } - - err = -ENOMEM; - header = um_kmalloc(sizeof(*header)); - if(header == NULL){ - printk("Failed to allocate COW V2 header\n"); - goto out; - } - header->magic = htonl(COW_MAGIC); - header->version = htonl(COW_VERSION); - - err = -EINVAL; - if(strlen(backing_file) > sizeof(header->backing_file) - 1){ - printk("Backing file name \"%s\" is too long - names are " - "limited to %d characters\n", backing_file, - sizeof(header->backing_file) - 1); - goto out_free; - } - - if(absolutize(header->backing_file, sizeof(header->backing_file), - backing_file)) - goto out_free; - - err = stat64(header->backing_file, &buf); - if(err < 0){ - printk("Stat of backing file '%s' failed, errno = %d\n", - header->backing_file, errno); - err = -errno; - goto out_free; - } - - err = os_file_size(header->backing_file, size); - if(err){ - printk("Couldn't get size of backing file '%s', errno = %d\n", - header->backing_file, -*size); - goto out_free; - } - - header->mtime = htonl(buf.st_mtime); - header->size = htonll(*size); - header->sectorsize = htonl(sectorsize); - - err = write(fd, header, sizeof(*header)); - if(err != sizeof(*header)){ - printk("Write of header to new COW file '%s' failed, " - "errno = %d\n", cow_file, errno); - goto out_free; - } - err = 0; - out_free: - kfree(header); - out: - return(err); -} - int open_ubd_file(char *file, struct openflags *openflags, char **backing_file_out, int *bitmap_offset_out, unsigned long *bitmap_len_out, int *data_offset_out, @@ -334,26 +108,36 @@ int open_ubd_file(char *file, struct ope { time_t mtime; __u64 size; + __u32 version, align; char *backing_file; - int fd, err, sectorsize, magic, same, mode = 0644; + int fd, err, sectorsize, same, mode = 0644; - if((fd = os_open_file(file, *openflags, mode)) < 0){ + fd = os_open_file(file, *openflags, mode); + if(fd < 0){ if((fd == -ENOENT) && (create_cow_out != NULL)) *create_cow_out = 1; if(!openflags->w || ((errno != EROFS) && (errno != EACCES))) return(-errno); openflags->w = 0; - if((fd = os_open_file(file, *openflags, mode)) < 0) + fd = os_open_file(file, *openflags, mode); + if(fd < 0) return(fd); } + + err = os_lock_file(fd, openflags->w); + if(err < 0){ + printk("Failed to lock '%s', err = %d\n", file, -err); + goto out_close; + } + if(backing_file_out == NULL) return(fd); - err = read_cow_header(fd, &magic, &backing_file, &mtime, &size, - §orsize, bitmap_offset_out); + err = read_cow_header(file_reader, &fd, &version, &backing_file, &mtime, + &size, §orsize, &align, bitmap_offset_out); if(err && (*backing_file_out != NULL)){ printk("Failed to read COW header from COW file \"%s\", " - "errno = %d\n", file, err); - goto error; + "errno = %d\n", file, -err); + goto out_close; } if(err) return(fd); @@ -363,36 +147,33 @@ int open_ubd_file(char *file, struct ope if(!same && !backing_file_mismatch(*backing_file_out, size, mtime)){ printk("Switching backing file to '%s'\n", *backing_file_out); - err = write_cow_header(file, fd, *backing_file_out, - sectorsize, &size); + err = write_cow_header(file, fd, *backing_file_out, + sectorsize, align, &size); if(err){ - printk("Switch failed, errno = %d\n", err); + printk("Switch failed, errno = %d\n", -err); return(err); } } else { *backing_file_out = backing_file; err = backing_file_mismatch(*backing_file_out, size, mtime); - if(err) goto error; + if(err) goto out_close; } - sizes(size, sectorsize, *bitmap_offset_out, bitmap_len_out, - data_offset_out); + cow_sizes(version, size, sectorsize, align, *bitmap_offset_out, + bitmap_len_out, data_offset_out); return(fd); - error: - close(fd); + out_close: + os_close_file(fd); return(err); } int create_cow_file(char *cow_file, char *backing_file, struct openflags flags, - int sectorsize, int *bitmap_offset_out, + int sectorsize, int alignment, int *bitmap_offset_out, unsigned long *bitmap_len_out, int *data_offset_out) { - __u64 blocks; - long zero; - int err, fd, i; - long long size; + int err, fd; flags.c = 1; fd = open_ubd_file(cow_file, &flags, NULL, NULL, NULL, NULL, NULL); @@ -403,57 +184,49 @@ int create_cow_file(char *cow_file, char goto out; } - err = write_cow_header(cow_file, fd, backing_file, sectorsize, &size); - if(err) goto out_close; - - blocks = (size + sectorsize - 1) / sectorsize; - blocks = (blocks + sizeof(long) * 8 - 1) / (sizeof(long) * 8); - zero = 0; - for(i = 0; i < blocks; i++){ - err = write(fd, &zero, sizeof(zero)); - if(err != sizeof(zero)){ - printk("Write of bitmap to new COW file '%s' failed, " - "errno = %d\n", cow_file, errno); - goto out_close; - } - } - - sizes(size, sectorsize, sizeof(struct cow_header_v2), - bitmap_len_out, data_offset_out); - *bitmap_offset_out = sizeof(struct cow_header_v2); - - return(fd); - - out_close: - close(fd); + err = init_cow_file(fd, cow_file, backing_file, sectorsize, alignment, + bitmap_offset_out, bitmap_len_out, + data_offset_out); + if(!err) + return(fd); + os_close_file(fd); out: return(err); } +/* XXX Just trivial wrappers around os_read_file and os_write_file */ int read_ubd_fs(int fd, void *buffer, int len) { - int n; - - n = read(fd, buffer, len); - if(n < 0) return(-errno); - else return(n); + return(os_read_file(fd, buffer, len)); } int write_ubd_fs(int fd, char *buffer, int len) { - int n; - - n = write(fd, buffer, len); - if(n < 0) return(-errno); - else return(n); + return(os_write_file(fd, buffer, len)); } -int ubd_is_dir(char *file) +static int update_bitmap(struct io_thread_req *req) { - struct stat64 buf; + int n; + + if(req->cow_offset == -1) + return(0); + + n = os_seek_file(req->fds[1], req->cow_offset); + if(n < 0){ + printk("do_io - bitmap lseek failed : err = %d\n", -n); + return(1); + } + + n = os_write_file(req->fds[1], &req->bitmap_words, + sizeof(req->bitmap_words)); + if(n != sizeof(req->bitmap_words)){ + printk("do_io - bitmap update failed, err = %d fd = %d\n", -n, + req->fds[1]); + return(1); + } - if(stat64(file, &buf) < 0) return(0); - return(S_ISDIR(buf.st_mode)); + return(0); } void do_io(struct io_thread_req *req) @@ -461,8 +234,18 @@ void do_io(struct io_thread_req *req) char *buf; unsigned long len; int n, nsectors, start, end, bit; + int err; __u64 off; + if(req->op == UBD_MMAP){ + /* Touch the page to force the host to do any necessary IO to + * get it into memory + */ + n = *((volatile int *) req->buffer); + req->error = update_bitmap(req); + return; + } + nsectors = req->length / req->sectorsize; start = 0; do { @@ -473,15 +256,14 @@ void do_io(struct io_thread_req *req) &req->sector_mask) == bit)) end++; - if(end != nsectors) - printk("end != nsectors\n"); off = req->offset + req->offsets[bit] + start * req->sectorsize; len = (end - start) * req->sectorsize; buf = &req->buffer[start * req->sectorsize]; - if(os_seek_file(req->fds[bit], off) != 0){ - printk("do_io - lseek failed : errno = %d\n", errno); + err = os_seek_file(req->fds[bit], off); + if(err < 0){ + printk("do_io - lseek failed : err = %d\n", -err); req->error = 1; return; } @@ -490,11 +272,10 @@ void do_io(struct io_thread_req *req) do { buf = &buf[n]; len -= n; - n = read(req->fds[bit], buf, len); + n = os_read_file(req->fds[bit], buf, len); if (n < 0) { - printk("do_io - read returned %d : " - "errno = %d fd = %d\n", n, - errno, req->fds[bit]); + printk("do_io - read failed, err = %d " + "fd = %d\n", -n, req->fds[bit]); req->error = 1; return; } @@ -502,11 +283,10 @@ void do_io(struct io_thread_req *req) if (n < len) memset(&buf[n], 0, len - n); } else { - n = write(req->fds[bit], buf, len); + n = os_write_file(req->fds[bit], buf, len); if(n != len){ - printk("do_io - write returned %d : " - "errno = %d fd = %d\n", n, - errno, req->fds[bit]); + printk("do_io - write failed err = %d " + "fd = %d\n", -n, req->fds[bit]); req->error = 1; return; } @@ -515,24 +295,7 @@ void do_io(struct io_thread_req *req) start = end; } while(start < nsectors); - if(req->cow_offset != -1){ - if(os_seek_file(req->fds[1], req->cow_offset) != 0){ - printk("do_io - bitmap lseek failed : errno = %d\n", - errno); - req->error = 1; - return; - } - n = write(req->fds[1], &req->bitmap_words, - sizeof(req->bitmap_words)); - if(n != sizeof(req->bitmap_words)){ - printk("do_io - bitmap update returned %d : " - "errno = %d fd = %d\n", n, errno, req->fds[1]); - req->error = 1; - return; - } - } - req->error = 0; - return; + req->error = update_bitmap(req); } /* Changed in start_io_thread, which is serialized by being called only @@ -550,19 +313,23 @@ int io_thread(void *arg) signal(SIGWINCH, SIG_IGN); while(1){ - n = read(kernel_fd, &req, sizeof(req)); - if(n < 0) printk("io_thread - read returned %d, errno = %d\n", - n, errno); - else if(n < sizeof(req)){ - printk("io_thread - short read : length = %d\n", n); + n = os_read_file(kernel_fd, &req, sizeof(req)); + if(n != sizeof(req)){ + if(n < 0) + printk("io_thread - read failed, fd = %d, " + "err = %d\n", kernel_fd, -n); + else { + printk("io_thread - short read, fd = %d, " + "length = %d\n", kernel_fd, n); + } continue; } io_count++; do_io(&req); - n = write(kernel_fd, &req, sizeof(req)); + n = os_write_file(kernel_fd, &req, sizeof(req)); if(n != sizeof(req)) - printk("io_thread - write failed, errno = %d\n", - errno); + printk("io_thread - write failed, fd = %d, err = %d\n", + kernel_fd, -n); } } @@ -571,10 +338,11 @@ int start_io_thread(unsigned long sp, in int pid, fds[2], err; err = os_pipe(fds, 1, 1); - if(err){ - printk("start_io_thread - os_pipe failed, errno = %d\n", -err); - return(-1); + if(err < 0){ + printk("start_io_thread - os_pipe failed, err = %d\n", -err); + goto out; } + kernel_fd = fds[0]; *fd_out = fds[1]; @@ -582,32 +350,19 @@ int start_io_thread(unsigned long sp, in NULL); if(pid < 0){ printk("start_io_thread - clone failed : errno = %d\n", errno); - return(-errno); + goto out_close; } - return(pid); -} - -#ifdef notdef -int start_io_thread(unsigned long sp, int *fd_out) -{ - int pid; - if((kernel_fd = get_pty()) < 0) return(-1); - raw(kernel_fd, 0); - if((*fd_out = open(ptsname(kernel_fd), O_RDWR)) < 0){ - printk("Couldn't open tty for IO\n"); - return(-1); - } - - pid = clone(io_thread, (void *) sp, CLONE_FILES | CLONE_VM | SIGCHLD, - NULL); - if(pid < 0){ - printk("start_io_thread - clone failed : errno = %d\n", errno); - return(-errno); - } return(pid); + + out_close: + os_close_file(fds[0]); + os_close_file(fds[1]); + kernel_fd = -1; + *fd_out = -1; + out: + return(err); } -#endif /* * Overrides for Emacs so that we follow Linus's tabbing style. diff -puN arch/um/drivers/xterm.c~Main-uml-patch-no-skas arch/um/drivers/xterm.c --- uml-linux-2.6.7/arch/um/drivers/xterm.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.483324008 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/xterm.c 2004-06-29 21:02:55.718288288 +0200 @@ -8,7 +8,6 @@ #include #include #include -#include #include #include #include @@ -36,7 +35,8 @@ void *xterm_init(char *str, int device, { struct xterm_chan *data; - if((data = malloc(sizeof(*data))) == NULL) return(NULL); + data = malloc(sizeof(*data)); + if(data == NULL) return(NULL); *data = ((struct xterm_chan) { .pid = -1, .helper_pid = -1, .device = device, @@ -93,7 +93,7 @@ int xterm_open(int input, int output, in "/usr/lib/uml/port-helper", "-uml-socket", file, NULL }; - if(access(argv[4], X_OK)) + if(os_access(argv[4], OS_ACC_X_OK) < 0) argv[4] = "port-helper"; fd = mkstemp(file); @@ -106,13 +106,13 @@ int xterm_open(int input, int output, in printk("xterm_open : unlink failed, errno = %d\n", errno); return(-errno); } - close(fd); + os_close_file(fd); - fd = create_unix_socket(file, sizeof(file)); + fd = os_create_unix_socket(file, sizeof(file), 1); if(fd < 0){ printk("xterm_open : create_unix_socket failed, errno = %d\n", -fd); - return(-fd); + return(fd); } sprintf(title, data->title, data->device); @@ -128,15 +128,16 @@ int xterm_open(int input, int output, in if(data->direct_rcv) new = os_rcv_fd(fd, &data->helper_pid); else { - if((err = os_set_fd_block(fd, 0)) != 0){ + err = os_set_fd_block(fd, 0); + if(err < 0){ printk("xterm_open : failed to set descriptor " - "non-blocking, errno = %d\n", err); + "non-blocking, err = %d\n", -err); return(err); } new = xterm_fd(fd, &data->helper_pid); } if(new < 0){ - printk("xterm_open : os_rcv_fd failed, errno = %d\n", -new); + printk("xterm_open : os_rcv_fd failed, err = %d\n", -new); goto out; } @@ -160,7 +161,7 @@ void xterm_close(int fd, void *d) if(data->helper_pid != -1) os_kill_process(data->helper_pid, 0); data->helper_pid = -1; - close(fd); + os_close_file(fd); } void xterm_free(void *d) diff -puN arch/um/drivers/xterm_kern.c~Main-uml-patch-no-skas arch/um/drivers/xterm_kern.c --- uml-linux-2.6.7/arch/um/drivers/xterm_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.484323856 +0200 +++ uml-linux-2.6.7-paolo/arch/um/drivers/xterm_kern.c 2004-06-29 21:02:55.719288136 +0200 @@ -5,9 +5,12 @@ #include "linux/errno.h" #include "linux/slab.h" +#include "linux/signal.h" +#include "linux/interrupt.h" #include "asm/semaphore.h" #include "asm/irq.h" #include "irq_user.h" +#include "irq_kern.h" #include "kern_util.h" #include "os.h" #include "xterm.h" @@ -19,17 +22,18 @@ struct xterm_wait { int new_fd; }; -static void xterm_interrupt(int irq, void *data, struct pt_regs *regs) +static irqreturn_t xterm_interrupt(int irq, void *data, struct pt_regs *regs) { struct xterm_wait *xterm = data; int fd; fd = os_rcv_fd(xterm->fd, &xterm->pid); if(fd == -EAGAIN) - return; + return(IRQ_NONE); xterm->new_fd = fd; up(&xterm->sem); + return(IRQ_HANDLED); } int xterm_fd(int socket, int *pid_out) @@ -54,7 +58,8 @@ int xterm_fd(int socket, int *pid_out) if(err){ printk(KERN_ERR "xterm_fd : failed to get IRQ for xterm, " "err = %d\n", err); - return(err); + ret = err; + goto out; } down(&data->sem); @@ -62,6 +67,7 @@ int xterm_fd(int socket, int *pid_out) ret = data->new_fd; *pid_out = data->pid; + out: kfree(data); return(ret); diff -puN arch/um/dyn.lds.S~Main-uml-patch-no-skas arch/um/dyn.lds.S --- uml-linux-2.6.7/arch/um/dyn.lds.S~Main-uml-patch-no-skas 2004-06-29 21:02:55.485323704 +0200 +++ uml-linux-2.6.7-paolo/arch/um/dyn.lds.S 2004-06-29 21:02:55.719288136 +0200 @@ -1,3 +1,5 @@ +#include + OUTPUT_FORMAT(ELF_FORMAT) OUTPUT_ARCH(ELF_ARCH) ENTRY(_start) @@ -10,12 +12,15 @@ SECTIONS { . = START + SIZEOF_HEADERS; .interp : { *(.interp) } - . = ALIGN(4096); __binary_start = .; . = ALIGN(4096); /* Init code and data */ _stext = .; __init_begin = .; - .text.init : { *(.text.init) } + .init.text : { + _sinittext = .; + *(.init.text) + _einittext = .; + } . = ALIGN(4096); @@ -55,7 +60,9 @@ SECTIONS } =0x90909090 .plt : { *(.plt) } .text : { - *(.text .stub .text.* .gnu.linkonce.t.*) + *(.text) + SCHED_TEXT + *(.stub .text.* .gnu.linkonce.t.*) /* .gnu.warning sections are handled specially by elf32.em. */ *(.gnu.warning) } =0x90909090 @@ -67,7 +74,7 @@ SECTIONS #include "asm/common.lds.S" - .data.init : { *(.data.init) } + init.data : { *(.init.data) } /* Ensure the __preinit_array_start label is properly aligned. We could instead move the label definition inside the section, but diff -puN arch/um/include/2_5compat.h~Main-uml-patch-no-skas arch/um/include/2_5compat.h --- uml-linux-2.6.7/arch/um/include/2_5compat.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.486323552 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/2_5compat.h 2004-06-29 21:02:55.719288136 +0200 @@ -6,20 +6,6 @@ #ifndef __2_5_COMPAT_H__ #define __2_5_COMPAT_H__ -#include "linux/version.h" - -#define INIT_CONSOLE(dev_name, write_proc, device_proc, setup_proc, f) { \ - name : dev_name, \ - write : write_proc, \ - read : NULL, \ - device : device_proc, \ - setup : setup_proc, \ - flags : f, \ - index : -1, \ - cflag : 0, \ - next : NULL \ -} - #define INIT_HARDSECT(arr, maj, sizes) #define SET_PRI(task) do ; while(0) diff -puN /dev/null arch/um/include/irq_kern.h --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/include/irq_kern.h 2004-06-29 21:02:55.719288136 +0200 @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __IRQ_KERN_H__ +#define __IRQ_KERN_H__ + +#include "linux/interrupt.h" + +extern int um_request_irq(unsigned int irq, int fd, int type, + irqreturn_t (*handler)(int, void *, + struct pt_regs *), + unsigned long irqflags, const char * devname, + void *dev_id); + +#endif + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN arch/um/include/kern_util.h~Main-uml-patch-no-skas arch/um/include/kern_util.h --- uml-linux-2.6.7/arch/um/include/kern_util.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.487323400 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/kern_util.h 2004-06-29 21:02:55.720287984 +0200 @@ -60,12 +60,11 @@ extern void finish_fork(void); extern void paging_init(void); extern void init_flush_vm(void); extern void *syscall_sp(void *t); -extern void syscall_trace(void); +extern void syscall_trace(union uml_pt_regs *regs, int entryexit); extern int hz(void); -extern void idle_timer(void); +extern void uml_idle_timer(void); extern unsigned int do_IRQ(int irq, union uml_pt_regs *regs); extern int external_pid(void *t); -extern int pid_to_processor_id(int pid); extern void boot_timer_handler(int sig); extern void interrupt_end(void); extern void initial_thread_cb(void (*proc)(void *), void *arg); @@ -89,9 +88,7 @@ extern int remove_gdb(void); extern char *uml_strdup(char *string); extern void unprotect_kernel_mem(void); extern void protect_kernel_mem(void); -extern void set_kmem_end(unsigned long); extern void uml_cleanup(void); -extern int pid_to_processor_id(int pid); extern void set_current(void *t); extern void lock_signalled_task(void *t); extern void IPI_handler(int cpu); @@ -100,7 +97,9 @@ extern void *get_init_task(void); extern int clear_user_proc(void *buf, int size); extern int copy_to_user_proc(void *to, void *from, int size); extern int copy_from_user_proc(void *to, void *from, int size); +extern int strlen_user_proc(char *str); extern void bus_handler(int sig, union uml_pt_regs *regs); +extern void winch(int sig, union uml_pt_regs *regs); extern long execute_syscall(void *r); extern int smp_sigio_handler(void); extern void *get_current(void); @@ -111,6 +110,8 @@ extern void arch_switch(void); extern void free_irq(unsigned int, void *); extern int um_in_interrupt(void); extern int cpu(void); +extern unsigned long long time_stamp(void); + #endif /* diff -puN arch/um/include/line.h~Main-uml-patch-no-skas arch/um/include/line.h --- uml-linux-2.6.7/arch/um/include/line.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.488323248 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/line.h 2004-06-29 21:02:55.720287984 +0200 @@ -9,12 +9,14 @@ #include "linux/list.h" #include "linux/workqueue.h" #include "linux/tty.h" +#include "linux/interrupt.h" #include "asm/semaphore.h" #include "chan_user.h" #include "mconsole_kern.h" struct line_driver { char *name; + char *device_name; char *devfs_name; short major; short minor_start; @@ -67,8 +69,6 @@ struct lines { #define LINES_INIT(n) { num : n } -extern void line_interrupt(int irq, void *data, struct pt_regs *unused); -extern void line_write_interrupt(int irq, void *data, struct pt_regs *unused); extern void line_close(struct line *lines, struct tty_struct *tty); extern int line_open(struct line *lines, struct tty_struct *tty, struct chan_opts *opts); diff -puN arch/um/include/mconsole.h~Main-uml-patch-no-skas arch/um/include/mconsole.h --- uml-linux-2.6.7/arch/um/include/mconsole.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.489323096 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/mconsole.h 2004-06-29 21:02:55.720287984 +0200 @@ -41,11 +41,13 @@ struct mconsole_notify { struct mc_request; +enum mc_context { MCONSOLE_INTR, MCONSOLE_PROC }; + struct mconsole_command { char *command; void (*handler)(struct mc_request *req); - int as_interrupt; + enum mc_context context; }; struct mc_request @@ -77,6 +79,8 @@ extern void mconsole_sysrq(struct mc_req extern void mconsole_cad(struct mc_request *req); extern void mconsole_stop(struct mc_request *req); extern void mconsole_go(struct mc_request *req); +extern void mconsole_log(struct mc_request *req); +extern void mconsole_proc(struct mc_request *req); extern int mconsole_get_request(int fd, struct mc_request *req); extern int mconsole_notify(char *sock_name, int type, const void *data, diff -puN arch/um/include/mem.h~Main-uml-patch-no-skas arch/um/include/mem.h --- uml-linux-2.6.7/arch/um/include/mem.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.490322944 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/mem.h 2004-06-29 21:02:55.720287984 +0200 @@ -1,19 +1,18 @@ /* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2002, 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ #ifndef __MEM_H__ #define __MEM_H__ -struct vm_reserved { - struct list_head list; - unsigned long start; - unsigned long end; -}; +#include "linux/types.h" -extern void set_usable_vm(unsigned long start, unsigned long end); -extern void set_kmem_end(unsigned long new); +extern int phys_mapping(unsigned long phys, __u64 *offset_out); +extern int physmem_subst_mapping(void *virt, int fd, __u64 offset, int w); +extern int is_remapped(void *virt); +extern int physmem_remove_mapping(void *virt); +extern void physmem_forget_descriptor(int fd); #endif diff -puN /dev/null arch/um/include/mem_kern.h --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/include/mem_kern.h 2004-06-29 21:02:55.721287832 +0200 @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2003 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + +#ifndef __MEM_KERN_H__ +#define __MEM_KERN_H__ + +#include "linux/list.h" +#include "linux/types.h" + +struct remapper { + struct list_head list; + int (*proc)(int, unsigned long, int, __u64); +}; + +extern void register_remapper(struct remapper *info); + +#endif + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN arch/um/include/mem_user.h~Main-uml-patch-no-skas arch/um/include/mem_user.h --- uml-linux-2.6.7/arch/um/include/mem_user.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.492322640 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/mem_user.h 2004-06-29 21:02:55.721287832 +0200 @@ -32,43 +32,38 @@ #ifndef _MEM_USER_H #define _MEM_USER_H -struct mem_region { +struct iomem_region { + struct iomem_region *next; char *driver; - unsigned long start_pfn; - unsigned long start; - unsigned long len; - void *mem_map; int fd; + int size; + unsigned long phys; + unsigned long virt; }; -extern struct mem_region *regions[]; -extern struct mem_region physmem_region; +extern struct iomem_region *iomem_regions; +extern int iomem_size; #define ROUND_4M(n) ((((unsigned long) (n)) + (1 << 22)) & ~((1 << 22) - 1)) extern unsigned long host_task_size; extern unsigned long task_size; +extern void check_devanon(void); extern int init_mem_user(void); extern int create_mem_file(unsigned long len); -extern void setup_range(int fd, char *driver, unsigned long start, - unsigned long pfn, unsigned long total, int need_vm, - struct mem_region *region, void *reserved); extern void setup_memory(void *entry); extern unsigned long find_iomem(char *driver, unsigned long *len_out); -extern int init_maps(struct mem_region *region); -extern int nregions(void); -extern int reserve_vm(unsigned long start, unsigned long end, void *e); +extern int init_maps(unsigned long physmem, unsigned long iomem, + unsigned long highmem); extern unsigned long get_vm(unsigned long len); extern void setup_physmem(unsigned long start, unsigned long usable, - unsigned long len); -extern int setup_region(struct mem_region *region, void *entry); + unsigned long len, unsigned long highmem); extern void add_iomem(char *name, int fd, unsigned long size); -extern struct mem_region *phys_region(unsigned long phys); extern unsigned long phys_offset(unsigned long phys); extern void unmap_physmem(void); -extern int map_memory(unsigned long virt, unsigned long phys, - unsigned long len, int r, int w, int x); +extern void map_memory(unsigned long virt, unsigned long phys, + unsigned long len, int r, int w, int x); extern int protect_memory(unsigned long addr, unsigned long len, int r, int w, int x, int must_succeed); extern unsigned long get_kmem_end(void); diff -puN arch/um/include/os.h~Main-uml-patch-no-skas arch/um/include/os.h --- uml-linux-2.6.7/arch/um/include/os.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.493322488 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/os.h 2004-06-29 21:02:55.721287832 +0200 @@ -17,6 +17,32 @@ #define OS_TYPE_FIFO 6 #define OS_TYPE_SOCK 7 +/* os_access() flags */ +#define OS_ACC_F_OK 0 /* Test for existence. */ +#define OS_ACC_X_OK 1 /* Test for execute permission. */ +#define OS_ACC_W_OK 2 /* Test for write permission. */ +#define OS_ACC_R_OK 4 /* Test for read permission. */ +#define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */ + +/* + * types taken from stat_file() in hostfs_user.c + * (if they are wrong here, they are wrong there...). + */ +struct uml_stat { + int ust_dev; /* device */ + unsigned long long ust_ino; /* inode */ + int ust_mode; /* protection */ + int ust_nlink; /* number of hard links */ + int ust_uid; /* user ID of owner */ + int ust_gid; /* group ID of owner */ + unsigned long long ust_size; /* total size, in bytes */ + int ust_blksize; /* blocksize for filesystem I/O */ + unsigned long long ust_blocks; /* number of blocks allocated */ + unsigned long ust_atime; /* time of last access */ + unsigned long ust_mtime; /* time of last modification */ + unsigned long ust_ctime; /* time of last change */ +}; + struct openflags { unsigned int r : 1; unsigned int w : 1; @@ -84,29 +110,47 @@ static inline struct openflags of_excl(s flags.e = 1; return(flags); } - + static inline struct openflags of_cloexec(struct openflags flags) { flags.cl = 1; return(flags); } +extern int os_stat_file(const char *file_name, struct uml_stat *buf); +extern int os_stat_fd(const int fd, struct uml_stat *buf); +extern int os_access(const char *file, int mode); +extern void os_print_error(int error, const char* str); +extern int os_get_exec_close(int fd, int *close_on_exec); +extern int os_set_exec_close(int fd, int close_on_exec); +extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg); +extern int os_window_size(int fd, int *rows, int *cols); +extern int os_new_tty_pgrp(int fd, int pid); +extern int os_get_ifname(int fd, char *namebuf); +extern int os_set_slip(int fd); +extern int os_set_owner(int fd, int pid); +extern int os_sigio_async(int master, int slave); +extern int os_mode_fd(int fd, int mode); + extern int os_seek_file(int fd, __u64 offset); extern int os_open_file(char *file, struct openflags flags, int mode); extern int os_read_file(int fd, void *buf, int len); -extern int os_write_file(int fd, void *buf, int count); +extern int os_write_file(int fd, const void *buf, int count); extern int os_file_size(char *file, long long *size_out); +extern int os_file_modtime(char *file, unsigned long *modtime); extern int os_pipe(int *fd, int stream, int close_on_exec); extern int os_set_fd_async(int fd, int owner); extern int os_set_fd_block(int fd, int blocking); extern int os_accept_connection(int fd); +extern int os_create_unix_socket(char *file, int len, int close_on_exec); extern int os_shutdown_socket(int fd, int r, int w); extern void os_close_file(int fd); extern int os_rcv_fd(int fd, int *helper_pid_out); -extern int create_unix_socket(char *file, int len); +extern int create_unix_socket(char *file, int len, int close_on_exec); extern int os_connect_socket(char *name); extern int os_file_type(char *file); extern int os_file_mode(char *file, struct openflags *mode_out); +extern int os_lock_file(int fd, int excl); extern unsigned long os_process_pc(int pid); extern int os_process_parent(int pid); @@ -115,11 +159,12 @@ extern void os_kill_process(int pid, int extern void os_usr1_process(int pid); extern int os_getpid(void); -extern int os_map_memory(void *virt, int fd, unsigned long off, +extern int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len, int r, int w, int x); extern int os_protect_memory(void *addr, unsigned long len, int r, int w, int x); extern int os_unmap_memory(void *addr, int len); +extern void os_flush_stdout(void); #endif diff -puN arch/um/include/signal_user.h~Main-uml-patch-no-skas arch/um/include/signal_user.h --- uml-linux-2.6.7/arch/um/include/signal_user.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.494322336 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/signal_user.h 2004-06-29 21:02:55.722287680 +0200 @@ -11,6 +11,8 @@ extern int signal_stack_size; extern int change_sig(int signal, int on); extern void set_sigstack(void *stack, int size); extern void set_handler(int sig, void (*handler)(int), int flags, ...); +extern int set_signals(int enable); +extern int get_signals(void); #endif diff -puN arch/um/include/skas_ptrace.h~Main-uml-patch-no-skas arch/um/include/skas_ptrace.h --- uml-linux-2.6.7/arch/um/include/skas_ptrace.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.495322184 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/skas_ptrace.h 2004-06-29 21:02:55.722287680 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) * Licensed under the GPL */ diff -puN arch/um/include/sysdep-i386/frame_user.h~Main-uml-patch-no-skas arch/um/include/sysdep-i386/frame_user.h --- uml-linux-2.6.7/arch/um/include/sysdep-i386/frame_user.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.496322032 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/sysdep-i386/frame_user.h 2004-06-29 21:02:55.722287680 +0200 @@ -56,26 +56,26 @@ static inline void setup_arch_frame(stru * it would have to be __builtin_frame_address(1). */ -static inline unsigned long frame_restorer(void) -{ - unsigned long *fp; - - fp = __builtin_frame_address(0); - return((unsigned long) (fp + 1)); -} +#define frame_restorer() \ +({ \ + unsigned long *fp; \ +\ + fp = __builtin_frame_address(0); \ + ((unsigned long) (fp + 1)); \ +}) /* Similarly, this returns the value of sp when the handler was first * entered. This is used to calculate the proper sp when delivering * signals. */ -static inline unsigned long frame_sp(void) -{ - unsigned long *fp; - - fp = __builtin_frame_address(0); - return((unsigned long) (fp + 1)); -} +#define frame_sp() \ +({ \ + unsigned long *fp; \ +\ + fp = __builtin_frame_address(0); \ + ((unsigned long) (fp + 1)); \ +}) #endif diff -puN arch/um/include/sysdep-i386/sigcontext.h~Main-uml-patch-no-skas arch/um/include/sysdep-i386/sigcontext.h --- uml-linux-2.6.7/arch/um/include/sysdep-i386/sigcontext.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.497321880 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/sysdep-i386/sigcontext.h 2004-06-29 21:02:55.722287680 +0200 @@ -28,8 +28,8 @@ */ #define SC_START_SYSCALL(sc) do SC_EAX(sc) = -ENOSYS; while(0) -/* These are General Protection and Page Fault */ -#define SEGV_IS_FIXABLE(trap) ((trap == 13) || (trap == 14)) +/* This is Page Fault */ +#define SEGV_IS_FIXABLE(trap) (trap == 14) #define SC_SEGV_IS_FIXABLE(sc) (SEGV_IS_FIXABLE(SC_TRAPNO(sc))) diff -puN arch/um/include/sysdep-i386/syscalls.h~Main-uml-patch-no-skas arch/um/include/sysdep-i386/syscalls.h --- uml-linux-2.6.7/arch/um/include/sysdep-i386/syscalls.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.498321728 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/sysdep-i386/syscalls.h 2004-06-29 21:02:55.723287528 +0200 @@ -11,39 +11,34 @@ typedef long syscall_handler_t(struct pt #define EXECUTE_SYSCALL(syscall, regs) \ ((long (*)(struct syscall_args)) (*sys_call_table[syscall]))(SYSCALL_ARGS(®s->regs)) -extern syscall_handler_t sys_modify_ldt; -extern syscall_handler_t old_mmap_i386; -extern syscall_handler_t old_select; -extern syscall_handler_t sys_ni_syscall; - #define ARCH_SYSCALLS \ - [ __NR_mmap ] = old_mmap_i386, \ - [ __NR_select ] = old_select, \ - [ __NR_vm86old ] = sys_ni_syscall, \ - [ __NR_modify_ldt ] = sys_modify_ldt, \ - [ __NR_lchown32 ] = sys_lchown, \ - [ __NR_getuid32 ] = sys_getuid, \ - [ __NR_getgid32 ] = sys_getgid, \ - [ __NR_geteuid32 ] = sys_geteuid, \ - [ __NR_getegid32 ] = sys_getegid, \ - [ __NR_setreuid32 ] = sys_setreuid, \ - [ __NR_setregid32 ] = sys_setregid, \ - [ __NR_getgroups32 ] = sys_getgroups, \ - [ __NR_setgroups32 ] = sys_setgroups, \ - [ __NR_fchown32 ] = sys_fchown, \ - [ __NR_setresuid32 ] = sys_setresuid, \ - [ __NR_getresuid32 ] = sys_getresuid, \ - [ __NR_setresgid32 ] = sys_setresgid, \ - [ __NR_getresgid32 ] = sys_getresgid, \ - [ __NR_chown32 ] = sys_chown, \ - [ __NR_setuid32 ] = sys_setuid, \ - [ __NR_setgid32 ] = sys_setgid, \ - [ __NR_setfsuid32 ] = sys_setfsuid, \ - [ __NR_setfsgid32 ] = sys_setfsgid, \ - [ __NR_pivot_root ] = sys_pivot_root, \ - [ __NR_mincore ] = sys_mincore, \ - [ __NR_madvise ] = sys_madvise, \ - [ 222 ] = sys_ni_syscall, + [ __NR_mmap ] = (syscall_handler_t *) old_mmap_i386, \ + [ __NR_select ] = (syscall_handler_t *) old_select, \ + [ __NR_vm86old ] = (syscall_handler_t *) sys_ni_syscall, \ + [ __NR_modify_ldt ] = (syscall_handler_t *) sys_modify_ldt, \ + [ __NR_lchown32 ] = (syscall_handler_t *) sys_lchown, \ + [ __NR_getuid32 ] = (syscall_handler_t *) sys_getuid, \ + [ __NR_getgid32 ] = (syscall_handler_t *) sys_getgid, \ + [ __NR_geteuid32 ] = (syscall_handler_t *) sys_geteuid, \ + [ __NR_getegid32 ] = (syscall_handler_t *) sys_getegid, \ + [ __NR_setreuid32 ] = (syscall_handler_t *) sys_setreuid, \ + [ __NR_setregid32 ] = (syscall_handler_t *) sys_setregid, \ + [ __NR_getgroups32 ] = (syscall_handler_t *) sys_getgroups, \ + [ __NR_setgroups32 ] = (syscall_handler_t *) sys_setgroups, \ + [ __NR_fchown32 ] = (syscall_handler_t *) sys_fchown, \ + [ __NR_setresuid32 ] = (syscall_handler_t *) sys_setresuid, \ + [ __NR_getresuid32 ] = (syscall_handler_t *) sys_getresuid, \ + [ __NR_setresgid32 ] = (syscall_handler_t *) sys_setresgid, \ + [ __NR_getresgid32 ] = (syscall_handler_t *) sys_getresgid, \ + [ __NR_chown32 ] = (syscall_handler_t *) sys_chown, \ + [ __NR_setuid32 ] = (syscall_handler_t *) sys_setuid, \ + [ __NR_setgid32 ] = (syscall_handler_t *) sys_setgid, \ + [ __NR_setfsuid32 ] = (syscall_handler_t *) sys_setfsuid, \ + [ __NR_setfsgid32 ] = (syscall_handler_t *) sys_setfsgid, \ + [ __NR_pivot_root ] = (syscall_handler_t *) sys_pivot_root, \ + [ __NR_mincore ] = (syscall_handler_t *) sys_mincore, \ + [ __NR_madvise ] = (syscall_handler_t *) sys_madvise, \ + [ 222 ] = (syscall_handler_t *) sys_ni_syscall, /* 222 doesn't yet have a name in include/asm-i386/unistd.h */ diff -puN arch/um/include/ubd_user.h~Main-uml-patch-no-skas arch/um/include/ubd_user.h --- uml-linux-2.6.7/arch/um/include/ubd_user.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.500321424 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/ubd_user.h 2004-06-29 21:02:55.723287528 +0200 @@ -9,7 +9,7 @@ #include "os.h" -enum ubd_req { UBD_READ, UBD_WRITE }; +enum ubd_req { UBD_READ, UBD_WRITE, UBD_MMAP }; struct io_thread_req { enum ubd_req op; @@ -20,8 +20,10 @@ struct io_thread_req { char *buffer; int sectorsize; unsigned long sector_mask; - unsigned long cow_offset; + unsigned long long cow_offset; unsigned long bitmap_words[2]; + int map_fd; + unsigned long long map_offset; int error; }; @@ -31,7 +33,7 @@ extern int open_ubd_file(char *file, str int *create_cow_out); extern int create_cow_file(char *cow_file, char *backing_file, struct openflags flags, int sectorsize, - int *bitmap_offset_out, + int alignment, int *bitmap_offset_out, unsigned long *bitmap_len_out, int *data_offset_out); extern int read_cow_bitmap(int fd, void *buf, int offset, int len); @@ -39,7 +41,6 @@ extern int read_ubd_fs(int fd, void *buf extern int write_ubd_fs(int fd, char *buffer, int len); extern int start_io_thread(unsigned long sp, int *fds_out); extern void do_io(struct io_thread_req *req); -extern int ubd_is_dir(char *file); static inline int ubd_test_bit(__u64 bit, unsigned char *data) { diff -puN arch/um/include/um_uaccess.h~Main-uml-patch-no-skas arch/um/include/um_uaccess.h --- uml-linux-2.6.7/arch/um/include/um_uaccess.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.501321272 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/um_uaccess.h 2004-06-29 21:02:55.723287528 +0200 @@ -38,22 +38,73 @@ static inline int copy_to_user(void *to, from, n)); } +/* + * strncpy_from_user: - Copy a NUL terminated string from userspace. + * @dst: Destination address, in kernel space. This buffer must be at + * least @count bytes long. + * @src: Source address, in user space. + * @count: Maximum number of bytes to copy, including the trailing NUL. + * + * Copies a NUL-terminated string from userspace to kernel space. + * + * On success, returns the length of the string (not including the trailing + * NUL). + * + * If access to userspace fails, returns -EFAULT (some data may have been + * copied). + * + * If @count is smaller than the length of the string, copies @count bytes + * and returns @count. + */ + static inline int strncpy_from_user(char *dst, const char *src, int count) { return(CHOOSE_MODE_PROC(strncpy_from_user_tt, strncpy_from_user_skas, dst, src, count)); } +/* + * __clear_user: - Zero a block of memory in user space, with less checking. + * @to: Destination address, in user space. + * @n: Number of bytes to zero. + * + * Zero a block of memory in user space. Caller must check + * the specified block with access_ok() before calling this function. + * + * Returns number of bytes that could not be cleared. + * On success, this will be zero. + */ static inline int __clear_user(void *mem, int len) { return(CHOOSE_MODE_PROC(__clear_user_tt, __clear_user_skas, mem, len)); } +/* + * clear_user: - Zero a block of memory in user space. + * @to: Destination address, in user space. + * @n: Number of bytes to zero. + * + * Zero a block of memory in user space. + * + * Returns number of bytes that could not be cleared. + * On success, this will be zero. + */ static inline int clear_user(void *mem, int len) { return(CHOOSE_MODE_PROC(clear_user_tt, clear_user_skas, mem, len)); } +/* + * strlen_user: - Get the size of a string in user space. + * @str: The string to measure. + * @n: The maximum valid length + * + * Get the size of a NUL-terminated string in user space. + * + * Returns the size of the string INCLUDING the terminating NUL. + * On exception, returns 0. + * If the string is too long, returns a value greater than @n. + */ static inline int strnlen_user(const void *str, int len) { return(CHOOSE_MODE_PROC(strnlen_user_tt, strnlen_user_skas, str, len)); diff -puN arch/um/include/user.h~Main-uml-patch-no-skas arch/um/include/user.h --- uml-linux-2.6.7/arch/um/include/user.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.513319448 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/user.h 2004-06-29 21:02:55.723287528 +0200 @@ -14,6 +14,7 @@ extern void *um_kmalloc_atomic(int size) extern void kfree(void *ptr); extern int in_aton(char *str); extern int open_gdb_chan(void); +extern int strlcpy(char *, const char *, int); #endif diff -puN arch/um/include/user_util.h~Main-uml-patch-no-skas arch/um/include/user_util.h --- uml-linux-2.6.7/arch/um/include/user_util.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.515319144 +0200 +++ uml-linux-2.6.7-paolo/arch/um/include/user_util.h 2004-06-29 21:02:55.724287376 +0200 @@ -14,8 +14,6 @@ extern int grantpt(int __fd); extern int unlockpt(int __fd); extern char *ptsname(int __fd); -enum { OP_NONE, OP_EXEC, OP_FORK, OP_TRACE_ON, OP_REBOOT, OP_HALT, OP_CB }; - struct cpu_task { int pid; void *task; @@ -59,7 +57,6 @@ extern int wait_for_stop(int pid, int si extern void *add_signal_handler(int sig, void (*handler)(int)); extern int start_fork_tramp(void *arg, unsigned long temp_stack, int clone_flags, int (*tramp)(void *)); -extern int clone_and_wait(int (*fn)(void *), void *arg, void *sp, int flags); extern int linux_main(int argc, char **argv); extern void set_cmdline(char *cmd); extern void input_cb(void (*proc)(void *), void *arg, int arg_len); @@ -86,11 +83,13 @@ extern void check_sigio(void); extern int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr); extern void write_sigio_workaround(void); extern void arch_check_bugs(void); +extern int cpu_feature(char *what, char *buf, int len); extern int arch_handle_signal(int sig, union uml_pt_regs *regs); extern int arch_fixup(unsigned long address, void *sc_ptr); extern void forward_pending_sigio(int target); extern int can_do_skas(void); - +extern void arch_init_thread(void); + #endif /* diff -puN arch/um/Kconfig~Main-uml-patch-no-skas arch/um/Kconfig --- uml-linux-2.6.7/arch/um/Kconfig~Main-uml-patch-no-skas 2004-06-29 21:02:55.516318992 +0200 +++ uml-linux-2.6.7-paolo/arch/um/Kconfig 2004-06-29 21:02:55.724287376 +0200 @@ -61,6 +61,20 @@ config MODE_SKAS config NET bool "Networking support" + help + Unless you really know what you are doing, you should say Y here. + The reason is that some programs need kernel networking support even + when running on a stand-alone machine that isn't connected to any + other computer. If you are upgrading from an older kernel, you + should consider updating your networking tools too because changes + in the kernel and the tools often go hand in hand. The tools are + contained in the package net-tools, the location and version number + of which are given in Documentation/Changes. + + For a general introduction to Linux networking, it is highly + recommended to read the NET-HOWTO, available from + . + source "fs/Kconfig.binfmt" @@ -85,6 +99,19 @@ config HOSTFS If you'd like to be able to work with files stored on the host, say Y or M here; otherwise say N. +config HPPFS + tristate "HoneyPot ProcFS" + help + hppfs (HoneyPot ProcFS) is a filesystem which allows UML /proc + entries to be overridden, removed, or fabricated from the host. + Its purpose is to allow a UML to appear to be a physical machine + by removing or changing anything in /proc which gives away the + identity of a UML. + + See http://user-mode-linux.sf.net/hppfs.html for more information. + + You only need this if you are setting up a UML honeypot. Otherwise, + it is safe to say 'N' here. config MCONSOLE bool "Management console" @@ -105,6 +132,16 @@ config MCONSOLE config MAGIC_SYSRQ bool "Magic SysRq key" depends on MCONSOLE + help + If you say Y here, you will have some control over the system even + if the system crashes for example during kernel debugging (e.g., you + will be able to flush the buffer cache to disk, reboot the system + immediately or dump some status information). This is accomplished + by pressing various keys while holding SysRq (Alt+PrintScreen). It + also works on a serial console (on PC hardware at least), if you + send a BREAK and then within 5 seconds a command keypress. The + keys are documented in Documentation/sysrq.txt. Don't say Y + unless you really know what this hack does. config HOST_2G_2G bool "2G/2G host address space split" @@ -168,6 +205,17 @@ config KERNEL_STACK_ORDER be 1 << order pages. The default is OK unless you're running Valgrind on UML, in which case, set this to 3. +config UML_REAL_TIME_CLOCK + bool "Real-time Clock" + default y + help + This option makes UML time deltas match wall clock deltas. This should + normally be enabled. The exception would be if you are debugging with + UML and spend long times with UML stopped at a breakpoint. In this + case, when UML is restarted, it will call the timer enough times to make + up for the time spent at the breakpoint. This could result in a + noticable lag. If this is a problem, then disable this option. + endmenu source "init/Kconfig" @@ -240,6 +288,10 @@ config FRAME_POINTER config PT_PROXY bool "Enable ptrace proxy" depends on XTERM_CHAN && DEBUG_INFO + help + This option enables a debugging interface which allows gdb to debug + the kernel without needing to actually attach to kernel threads. + If you want to do kernel debugging, say Y here; otherwise say N. config GPROF bool "Enable gprof support" diff -puN arch/um/Kconfig_block~Main-uml-patch-no-skas arch/um/Kconfig_block --- uml-linux-2.6.7/arch/um/Kconfig_block~Main-uml-patch-no-skas 2004-06-29 21:02:55.517318840 +0200 +++ uml-linux-2.6.7-paolo/arch/um/Kconfig_block 2004-06-29 21:02:55.724287376 +0200 @@ -29,6 +29,20 @@ config BLK_DEV_UBD_SYNC wise choice too. In all other cases (for example, if you're just playing around with User-Mode Linux) you can choose N. +# Turn this back on when the driver actually works +# +#config BLK_DEV_COW +# tristate "COW block device" +# help +# This is a layered driver which sits above two other block devices. +# One is read-only, and the other is a read-write layer which stores +# all changes. This provides the illusion that the read-only layer +# can be mounted read-write and changed. + +config BLK_DEV_COW_COMMON + bool + default BLK_DEV_COW || BLK_DEV_UBD + config BLK_DEV_LOOP tristate "Loopback device support" diff -puN arch/um/Kconfig_net~Main-uml-patch-no-skas arch/um/Kconfig_net --- uml-linux-2.6.7/arch/um/Kconfig_net~Main-uml-patch-no-skas 2004-06-29 21:02:55.518318688 +0200 +++ uml-linux-2.6.7-paolo/arch/um/Kconfig_net 2004-06-29 21:02:55.725287224 +0200 @@ -1,5 +1,5 @@ -menu "Network Devices" +menu "UML Network Devices" depends on NET # UML virtual driver @@ -176,73 +176,5 @@ config UML_NET_SLIRP Startup example: "eth0=slirp,FE:FD:01:02:03:04,/usr/local/bin/slirp" - -# Below are hardware-independent drivers mirrored from -# drivers/net/Config.in. It would be nice if Linux -# had HW independent drivers separated from the other -# but it does not. Until then each non-ISA/PCI arch -# needs to provide it's own menu of network drivers -config DUMMY - tristate "Dummy net driver support" - -config BONDING - tristate "Bonding driver support" - -config EQUALIZER - tristate "EQL (serial line load balancing) support" - -config TUN - tristate "Universal TUN/TAP device driver support" - -config ETHERTAP - tristate "Ethertap network tap (OBSOLETE)" - depends on EXPERIMENTAL && NETLINK - -config PPP - tristate "PPP (point-to-point protocol) support" - -config PPP_MULTILINK - bool "PPP multilink support (EXPERIMENTAL)" - depends on PPP && EXPERIMENTAL - -config PPP_FILTER - bool "PPP filtering" - depends on PPP && FILTER - -config PPP_ASYNC - tristate "PPP support for async serial ports" - depends on PPP - -config PPP_SYNC_TTY - tristate "PPP support for sync tty ports" - depends on PPP - -config PPP_DEFLATE - tristate "PPP Deflate compression" - depends on PPP - -config PPP_BSDCOMP - tristate "PPP BSD-Compress compression" - depends on PPP - -config PPPOE - tristate "PPP over Ethernet (EXPERIMENTAL)" - depends on PPP && EXPERIMENTAL - -config SLIP - tristate "SLIP (serial line) support" - -config SLIP_COMPRESSED - bool "CSLIP compressed headers" - depends on SLIP=y - -config SLIP_SMART - bool "Keepalive and linefill" - depends on SLIP=y - -config SLIP_MODE_SLIP6 - bool "Six bit SLIP encapsulation" - depends on SLIP=y - endmenu diff -puN arch/um/kernel/config.c.in~Main-uml-patch-no-skas arch/um/kernel/config.c.in --- uml-linux-2.6.7/arch/um/kernel/config.c.in~Main-uml-patch-no-skas 2004-06-29 21:02:55.519318536 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/config.c.in 2004-06-29 21:02:55.725287224 +0200 @@ -7,9 +7,7 @@ #include #include "init.h" -static __initdata char *config = " -CONFIG -"; +static __initdata char *config = "CONFIG"; static int __init print_config(char *line, int *add) { diff -puN arch/um/kernel/exec_kern.c~Main-uml-patch-no-skas arch/um/kernel/exec_kern.c --- uml-linux-2.6.7/arch/um/kernel/exec_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.520318384 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/exec_kern.c 2004-06-29 21:02:55.725287224 +0200 @@ -32,10 +32,15 @@ void start_thread(struct pt_regs *regs, CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp); } +extern void log_exec(char **argv, void *tty); + static int execve1(char *file, char **argv, char **env) { int error; +#ifdef CONFIG_TTY_LOG + log_exec(argv, current->tty); +#endif error = do_execve(file, argv, env, ¤t->thread.regs); if (error == 0){ current->ptrace &= ~PT_DTRACE; diff -puN arch/um/kernel/frame.c~Main-uml-patch-no-skas arch/um/kernel/frame.c --- uml-linux-2.6.7/arch/um/kernel/frame.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.521318232 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/frame.c 2004-06-29 21:02:55.725287224 +0200 @@ -279,7 +279,7 @@ void capture_signal_stack(void) struct sc_frame_raw raw_sc; struct si_frame_raw raw_si; void *stack, *sigstack; - unsigned long top, sig_top, base; + unsigned long top, base; stack = mmap(NULL, PAGE_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); @@ -292,7 +292,6 @@ void capture_signal_stack(void) } top = (unsigned long) stack + PAGE_SIZE - sizeof(void *); - sig_top = (unsigned long) sigstack + PAGE_SIZE; /* Get the sigcontext, no sigrestorer layout */ raw_sc.restorer = 0; diff -puN arch/um/kernel/frame_kern.c~Main-uml-patch-no-skas arch/um/kernel/frame_kern.c --- uml-linux-2.6.7/arch/um/kernel/frame_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.522318080 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/frame_kern.c 2004-06-29 21:02:55.726287072 +0200 @@ -6,7 +6,6 @@ #include "asm/ptrace.h" #include "asm/uaccess.h" #include "asm/signal.h" -#include "asm/uaccess.h" #include "asm/ucontext.h" #include "frame_kern.h" #include "sigcontext.h" @@ -29,12 +28,15 @@ static int copy_restorer(void (*restorer sizeof(restorer))); } +extern int userspace_pid[]; + static int copy_sc_to_user(void *to, void *fp, struct pt_regs *from, struct arch_frame_data *arch) { return(CHOOSE_MODE(copy_sc_to_user_tt(to, fp, UPT_SC(&from->regs), arch), - copy_sc_to_user_skas(to, fp, &from->regs, + copy_sc_to_user_skas(userspace_pid[0], to, fp, + &from->regs, current->thread.cr2, current->thread.err))); } diff -puN arch/um/kernel/helper.c~Main-uml-patch-no-skas arch/um/kernel/helper.c --- uml-linux-2.6.7/arch/um/kernel/helper.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.524317776 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/helper.c 2004-06-29 21:02:55.726287072 +0200 @@ -7,7 +7,6 @@ #include #include #include -#include #include #include #include @@ -33,6 +32,7 @@ static int helper_child(void *arg) { struct helper_data *data = arg; char **argv = data->argv; + int errval; if(helper_pause){ signal(SIGHUP, helper_hup); @@ -41,8 +41,9 @@ static int helper_child(void *arg) if(data->pre_exec != NULL) (*data->pre_exec)(data->pre_data); execvp(argv[0], argv); + errval = errno; printk("execvp of '%s' failed - errno = %d\n", argv[0], errno); - write(data->fd, &errno, sizeof(errno)); + os_write_file(data->fd, &errval, sizeof(errval)); os_kill_process(os_getpid(), 0); return(0); } @@ -59,17 +60,20 @@ int run_helper(void (*pre_exec)(void *), if((stack_out != NULL) && (*stack_out != 0)) stack = *stack_out; else stack = alloc_stack(0, um_in_interrupt()); - if(stack == 0) return(-ENOMEM); + if(stack == 0) + return(-ENOMEM); err = os_pipe(fds, 1, 0); - if(err){ - printk("run_helper : pipe failed, errno = %d\n", -err); - return(err); + if(err < 0){ + printk("run_helper : pipe failed, err = %d\n", -err); + goto out_free; } - if(fcntl(fds[1], F_SETFD, 1) != 0){ - printk("run_helper : setting FD_CLOEXEC failed, errno = %d\n", - errno); - return(-errno); + + err = os_set_exec_close(fds[1], 1); + if(err < 0){ + printk("run_helper : setting FD_CLOEXEC failed, err = %d\n", + -err); + goto out_close; } sp = stack + page_size() - sizeof(void *); @@ -80,23 +84,34 @@ int run_helper(void (*pre_exec)(void *), pid = clone(helper_child, (void *) sp, CLONE_VM | SIGCHLD, &data); if(pid < 0){ printk("run_helper : clone failed, errno = %d\n", errno); - return(-errno); + err = -errno; + goto out_close; } - close(fds[1]); - n = read(fds[0], &err, sizeof(err)); + + os_close_file(fds[1]); + n = os_read_file(fds[0], &err, sizeof(err)); if(n < 0){ - printk("run_helper : read on pipe failed, errno = %d\n", - errno); - return(-errno); + printk("run_helper : read on pipe failed, err = %d\n", -n); + err = n; + goto out_kill; } else if(n != 0){ waitpid(pid, NULL, 0); - pid = -err; + pid = -errno; } if(stack_out == NULL) free_stack(stack, 0); else *stack_out = stack; return(pid); + + out_kill: + os_kill_process(pid, 1); + out_close: + os_close_file(fds[0]); + os_close_file(fds[1]); + out_free: + free_stack(stack, 0); + return(err); } int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags, @@ -117,9 +132,11 @@ int run_helper_thread(int (*proc)(void * } if(stack_out == NULL){ pid = waitpid(pid, &status, 0); - if(pid < 0) + if(pid < 0){ printk("run_helper_thread - wait failed, errno = %d\n", - pid); + errno); + pid = -errno; + } if(!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) printk("run_helper_thread - thread returned status " "0x%x\n", status); diff -puN arch/um/kernel/initrd_user.c~Main-uml-patch-no-skas arch/um/kernel/initrd_user.c --- uml-linux-2.6.7/arch/um/kernel/initrd_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.525317624 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/initrd_user.c 2004-06-29 21:02:55.726287072 +0200 @@ -6,7 +6,6 @@ #include #include #include -#include #include #include "user_util.h" @@ -19,13 +18,15 @@ int load_initrd(char *filename, void *bu { int fd, n; - if((fd = os_open_file(filename, of_read(OPENFLAGS()), 0)) < 0){ - printk("Opening '%s' failed - errno = %d\n", filename, errno); + fd = os_open_file(filename, of_read(OPENFLAGS()), 0); + if(fd < 0){ + printk("Opening '%s' failed - err = %d\n", filename, -fd); return(-1); } - if((n = read(fd, buf, size)) != size){ - printk("Read of %d bytes from '%s' returned %d, errno = %d\n", - size, filename, n, errno); + n = os_read_file(fd, buf, size); + if(n != size){ + printk("Read of %d bytes from '%s' failed, err = %d\n", size, + filename, -n); return(-1); } return(0); diff -puN arch/um/kernel/init_task.c~Main-uml-patch-no-skas arch/um/kernel/init_task.c --- uml-linux-2.6.7/arch/um/kernel/init_task.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.526317472 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/init_task.c 2004-06-29 21:02:55.726287072 +0200 @@ -8,7 +8,6 @@ #include "linux/module.h" #include "linux/sched.h" #include "linux/init_task.h" -#include "linux/version.h" #include "asm/uaccess.h" #include "asm/pgtable.h" #include "user_util.h" @@ -18,7 +17,7 @@ static struct fs_struct init_fs = INIT_F struct mm_struct init_mm = INIT_MM(init_mm); static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); - +static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); EXPORT_SYMBOL(init_mm); /* @@ -43,26 +42,12 @@ union thread_union init_thread_union __attribute__((__section__(".data.init_task"))) = { INIT_THREAD_INFO(init_task) }; -struct task_struct *alloc_task_struct(void) -{ - return((struct task_struct *) - __get_free_pages(GFP_KERNEL, CONFIG_KERNEL_STACK_ORDER)); -} - void unprotect_stack(unsigned long stack) { protect_memory(stack, (1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE, 1, 1, 0, 1); } -void free_task_struct(struct task_struct *task) -{ - /* free_pages decrements the page counter and only actually frees - * the pages if they are now not accessed by anything. - */ - free_pages((unsigned long) task, CONFIG_KERNEL_STACK_ORDER); -} - /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff -puN arch/um/kernel/irq.c~Main-uml-patch-no-skas arch/um/kernel/irq.c --- uml-linux-2.6.7/arch/um/kernel/irq.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.527317320 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/irq.c 2004-06-29 21:02:55.727286920 +0200 @@ -29,6 +29,7 @@ #include "user_util.h" #include "kern_util.h" #include "irq_user.h" +#include "irq_kern.h" static void register_irq_proc (unsigned int irq); @@ -83,65 +84,55 @@ struct hw_interrupt_type no_irq_type = { end_none }; -/* Not changed */ -volatile unsigned long irq_err_count; - /* * Generic, controller-independent functions: */ -int get_irq_list(char *buf) +int show_interrupts(struct seq_file *p, void *v) { - int i, j; - unsigned long flags; + int i = *(loff_t *) v, j; struct irqaction * action; - char *p = buf; + unsigned long flags; - p += sprintf(p, " "); - for (j=0; jtypename); - p += sprintf(p, " %s", action->name); + seq_printf(p, " %14s", irq_desc[i].handler->typename); + seq_printf(p, " %s", action->name); for (action=action->next; action; action = action->next) - p += sprintf(p, ", %s", action->name); - *p++ = '\n'; - end: + seq_printf(p, ", %s", action->name); + + seq_putc(p, '\n'); +skip: spin_unlock_irqrestore(&irq_desc[i].lock, flags); + } else if (i == NR_IRQS) { + seq_printf(p, "NMI: "); + for (j = 0; j < NR_CPUS; j++) + if (cpu_online(j)) + seq_printf(p, "%10u ", nmi_count(j)); + seq_putc(p, '\n'); } - p += sprintf(p, "\n"); -#ifdef notdef -#ifdef CONFIG_SMP - p += sprintf(p, "LOC: "); - for (j = 0; j < num_online_cpus(); j++) - p += sprintf(p, "%10u ", - apic_timer_irqs[cpu_logical_map(j)]); - p += sprintf(p, "\n"); -#endif -#endif - p += sprintf(p, "ERR: %10lu\n", irq_err_count); - return p - buf; -} - -int show_interrupts(struct seq_file *p, void *v) -{ - return(0); + return 0; } /* @@ -282,13 +273,12 @@ unsigned int do_IRQ(int irq, union uml_p * 0 return value means that this irq is already being * handled by some other CPU. (or is disabled) */ - int cpu = smp_processor_id(); irq_desc_t *desc = irq_desc + irq; struct irqaction * action; unsigned int status; irq_enter(); - kstat_cpu(cpu).irqs[irq]++; + kstat_this_cpu.irqs[irq]++; spin_lock(&desc->lock); desc->handler->ack(irq); /* @@ -385,7 +375,7 @@ out: */ int request_irq(unsigned int irq, - void (*handler)(int, void *, struct pt_regs *), + irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long irqflags, const char * devname, void *dev_id) @@ -433,15 +423,19 @@ int request_irq(unsigned int irq, EXPORT_SYMBOL(request_irq); int um_request_irq(unsigned int irq, int fd, int type, - void (*handler)(int, void *, struct pt_regs *), + irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long irqflags, const char * devname, void *dev_id) { - int retval; + int err; - retval = request_irq(irq, handler, irqflags, devname, dev_id); - if(retval) return(retval); - return(activate_fd(irq, fd, type, dev_id)); + err = request_irq(irq, handler, irqflags, devname, dev_id); + if(err) + return(err); + + if(fd != -1) + err = activate_fd(irq, fd, type, dev_id); + return(err); } /* this was setup_x86_irq but it seems pretty generic */ @@ -474,7 +468,8 @@ int setup_irq(unsigned int irq, struct i */ spin_lock_irqsave(&desc->lock,flags); p = &desc->action; - if ((old = *p) != NULL) { + old = *p; + if (old != NULL) { /* Can't share interrupts unless both agree to */ if (!(old->flags & new->flags & SA_SHIRQ)) { spin_unlock_irqrestore(&desc->lock,flags); @@ -586,12 +581,14 @@ static int irq_affinity_write_proc (stru unsigned long count, void *data) { int irq = (long) data, full_count = count, err; - cpumask_t new_value, tmp; + cpumask_t new_value; if (!irq_desc[irq].handler->set_affinity) return -EIO; err = cpumask_parse(buffer, count, new_value); + if(err) + return(err); #ifdef CONFIG_SMP /* @@ -599,9 +596,11 @@ static int irq_affinity_write_proc (stru * way to make the system unusable accidentally :-) At least * one online CPU still has to be targeted. */ - cpus_and(tmp, new_value, cpu_online_map); - if (cpus_empty(tmp)) - return -EINVAL; + { cpumask_t tmp; + cpus_and(tmp, new_value, cpu_online_map); + if (cpus_empty(tmp)) + return -EINVAL; + } #endif irq_affinity[irq] = new_value; diff -puN arch/um/kernel/irq_user.c~Main-uml-patch-no-skas arch/um/kernel/irq_user.c --- uml-linux-2.6.7/arch/um/kernel/irq_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.528317168 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/irq_user.c 2004-06-29 21:02:55.727286920 +0200 @@ -6,7 +6,6 @@ #include #include #include -#include #include #include #include @@ -49,7 +48,8 @@ void sigio_handler(int sig, union uml_pt if(smp_sigio_handler()) return; while(1){ - if((n = poll(pollfds, pollfds_num, 0)) < 0){ + n = poll(pollfds, pollfds_num, 0); + if(n < 0){ if(errno == EINTR) continue; printk("sigio_handler : poll returned %d, " "errno = %d\n", n, errno); @@ -366,34 +366,31 @@ void deactivate_fd(int fd, int irqnum) void forward_ipi(int fd, int pid) { - if(fcntl(fd, F_SETOWN, pid) < 0){ - int save_errno = errno; - if(fcntl(fd, F_GETOWN, 0) != pid){ - printk("forward_ipi: F_SETOWN failed, fd = %d, " - "me = %d, target = %d, errno = %d\n", fd, - os_getpid(), pid, save_errno); - } - } + int err; + + err = os_set_owner(fd, pid); + if(err < 0) + printk("forward_ipi: set_owner failed, fd = %d, me = %d, " + "target = %d, err = %d\n", fd, os_getpid(), pid, -err); } void forward_interrupts(int pid) { struct irq_fd *irq; unsigned long flags; + int err; flags = irq_lock(); for(irq=active_fds;irq != NULL;irq = irq->next){ - if(fcntl(irq->fd, F_SETOWN, pid) < 0){ - int save_errno = errno; - if(fcntl(irq->fd, F_GETOWN, 0) != pid){ - /* XXX Just remove the irq rather than - * print out an infinite stream of these - */ - printk("Failed to forward %d to pid %d, " - "errno = %d\n", irq->fd, pid, - save_errno); - } + err = os_set_owner(irq->fd, pid); + if(err < 0){ + /* XXX Just remove the irq rather than + * print out an infinite stream of these + */ + printk("Failed to forward %d to pid %d, err = %d\n", + irq->fd, pid, -err); } + irq->pid = pid; } irq_unlock(flags); diff -puN arch/um/kernel/ksyms.c~Main-uml-patch-no-skas arch/um/kernel/ksyms.c --- uml-linux-2.6.7/arch/um/kernel/ksyms.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.529317016 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/ksyms.c 2004-06-29 21:02:55.728286768 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2001 - 2004 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -8,7 +8,7 @@ #include "linux/string.h" #include "linux/smp_lock.h" #include "linux/spinlock.h" -#include +#include "linux/highmem.h" #include "asm/current.h" #include "asm/delay.h" #include "asm/processor.h" @@ -19,6 +19,7 @@ #include "asm/tlbflush.h" #include "kern_util.h" #include "user_util.h" +#include "mem_user.h" #include "os.h" #include "helper.h" @@ -34,34 +35,64 @@ EXPORT_SYMBOL(task_size); EXPORT_SYMBOL(flush_tlb_range); EXPORT_SYMBOL(host_task_size); EXPORT_SYMBOL(arch_validate); +EXPORT_SYMBOL(get_kmem_end); -EXPORT_SYMBOL(region_pa); -EXPORT_SYMBOL(region_va); -EXPORT_SYMBOL(phys_mem_map); -EXPORT_SYMBOL(page_mem_map); EXPORT_SYMBOL(page_to_phys); EXPORT_SYMBOL(phys_to_page); EXPORT_SYMBOL(high_physmem); EXPORT_SYMBOL(empty_zero_page); EXPORT_SYMBOL(um_virt_to_phys); +EXPORT_SYMBOL(__virt_to_page); +EXPORT_SYMBOL(to_phys); +EXPORT_SYMBOL(to_virt); EXPORT_SYMBOL(mode_tt); EXPORT_SYMBOL(handle_page_fault); +EXPORT_SYMBOL(find_iomem); +#ifdef CONFIG_MODE_TT +EXPORT_SYMBOL(copy_from_user_tt); +EXPORT_SYMBOL(copy_to_user_tt); +#endif + +#ifdef CONFIG_MODE_SKAS +EXPORT_SYMBOL(copy_to_user_skas); +EXPORT_SYMBOL(copy_from_user_skas); +#endif + +EXPORT_SYMBOL(os_stat_fd); +EXPORT_SYMBOL(os_stat_file); +EXPORT_SYMBOL(os_access); +EXPORT_SYMBOL(os_print_error); +EXPORT_SYMBOL(os_get_exec_close); +EXPORT_SYMBOL(os_set_exec_close); EXPORT_SYMBOL(os_getpid); EXPORT_SYMBOL(os_open_file); EXPORT_SYMBOL(os_read_file); EXPORT_SYMBOL(os_write_file); EXPORT_SYMBOL(os_seek_file); +EXPORT_SYMBOL(os_lock_file); +EXPORT_SYMBOL(os_ioctl_generic); EXPORT_SYMBOL(os_pipe); EXPORT_SYMBOL(os_file_type); +EXPORT_SYMBOL(os_file_mode); +EXPORT_SYMBOL(os_file_size); +EXPORT_SYMBOL(os_flush_stdout); EXPORT_SYMBOL(os_close_file); +EXPORT_SYMBOL(os_set_fd_async); +EXPORT_SYMBOL(os_set_fd_block); EXPORT_SYMBOL(helper_wait); EXPORT_SYMBOL(os_shutdown_socket); +EXPORT_SYMBOL(os_create_unix_socket); EXPORT_SYMBOL(os_connect_socket); +EXPORT_SYMBOL(os_accept_connection); +EXPORT_SYMBOL(os_rcv_fd); EXPORT_SYMBOL(run_helper); EXPORT_SYMBOL(start_thread); EXPORT_SYMBOL(dump_thread); +EXPORT_SYMBOL(do_gettimeofday); +EXPORT_SYMBOL(do_settimeofday); + /* This is here because UML expands open to sys_open, not to a system * call instruction. */ @@ -90,3 +121,13 @@ EXPORT_SYMBOL(kunmap_atomic); EXPORT_SYMBOL(kmap_atomic_to_page); #endif +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN arch/um/kernel/Makefile~Main-uml-patch-no-skas arch/um/kernel/Makefile --- uml-linux-2.6.7/arch/um/kernel/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.530316864 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/Makefile 2004-06-29 21:02:55.728286768 +0200 @@ -7,11 +7,11 @@ extra-y := vmlinux.lds.s obj-y = checksum.o config.o exec_kern.o exitcode.o frame_kern.o frame.o \ helper.o init_task.o irq.o irq_user.o ksyms.o mem.o mem_user.o \ - process.o process_kern.o ptrace.o reboot.o resource.o sigio_user.o \ - sigio_kern.o signal_kern.o signal_user.o smp.o syscall_kern.o \ - syscall_user.o sysrq.o sys_call_table.o tempfile.o time.o \ - time_kern.o tlb.o trap_kern.o trap_user.o uaccess_user.o um_arch.o \ - umid.o user_syms.o user_util.o + physmem.o process.o process_kern.o ptrace.o reboot.o resource.o \ + sigio_user.o sigio_kern.o signal_kern.o signal_user.o smp.o \ + syscall_kern.o syscall_user.o sysrq.o sys_call_table.o tempfile.o \ + time.o time_kern.o tlb.o trap_kern.o trap_user.o uaccess_user.o \ + um_arch.o umid.o user_util.o obj-$(CONFIG_BLK_DEV_INITRD) += initrd_kern.o initrd_user.o obj-$(CONFIG_GPROF) += gprof_syms.o @@ -24,43 +24,27 @@ obj-$(CONFIG_MODE_SKAS) += skas/ user-objs-$(CONFIG_TTY_LOG) += tty_log.o USER_OBJS := $(filter %_user.o,$(obj-y)) $(user-objs-y) config.o helper.o \ - process.o tempfile.o time.o tty_log.o umid.o user_util.o user_syms.o + process.o tempfile.o time.o tty_log.o umid.o user_util.o USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file)) -DMODULES-$(CONFIG_MODULES) = -D__CONFIG_MODULES__ -DMODVERSIONS-$(CONFIG_MODVERSIONS) = -D__CONFIG_MODVERSIONS__ - - -CFLAGS_user_syms.o = -D__AUTOCONF_INCLUDED__ $(DMODULES-y) $(DMODVERSIONS-y) \ - -I/usr/include -I../include - CFLAGS_frame.o := $(patsubst -fomit-frame-pointer,,$(USER_CFLAGS)) -$(USER_OBJS) : %.o: %.c - $(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $< - # This has to be separate because it needs be compiled with frame pointers # regardless of how the rest of the kernel is built. $(obj)/frame.o: $(src)/frame.c $(CC) $(CFLAGS_$(notdir $@)) -c -o $@ $< -QUOTE = 'my $$config=`cat $(TOPDIR)/.config`; $$config =~ s/"/\\"/g ; while() { $$_ =~ s/CONFIG/$$config/; print $$_ }' +$(USER_OBJS) : %.o: %.c + $(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $< -$(obj)/config.c : $(src)/config.c.in $(TOPDIR)/.config - $(PERL) -e $(QUOTE) < $(src)/config.c.in > $@ +QUOTE = 'my $$config=`cat $(TOPDIR)/.config`; $$config =~ s/"/\\"/g ; $$config =~ s/\n/\\n"\n"/g ; while() { $$_ =~ s/CONFIG/$$config/; print $$_ }' $(obj)/config.o : $(obj)/config.c -clean: - rm -f config.c - for dir in $(subdir-y) ; do $(MAKE) -C $$dir clean; done - -modules: - -fastdep: - -dep: - -archmrproper: clean +quiet_cmd_quote = QUOTE $@ +cmd_quote = $(PERL) -e $(QUOTE) < $< > $@ +targets += config.c +$(obj)/config.c : $(src)/config.c.in $(TOPDIR)/.config FORCE + $(call if_changed,quote) diff -puN arch/um/kernel/mem.c~Main-uml-patch-no-skas arch/um/kernel/mem.c --- uml-linux-2.6.7/arch/um/kernel/mem.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.532316560 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/mem.c 2004-06-29 21:02:55.729286616 +0200 @@ -1,74 +1,66 @@ /* - * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ -#include "linux/config.h" -#include "linux/module.h" -#include "linux/types.h" +#include "linux/stddef.h" +#include "linux/kernel.h" #include "linux/mm.h" -#include "linux/fs.h" -#include "linux/init.h" #include "linux/bootmem.h" #include "linux/swap.h" -#include "linux/slab.h" -#include "linux/vmalloc.h" #include "linux/highmem.h" +#include "linux/gfp.h" #include "asm/page.h" -#include "asm/pgtable.h" +#include "asm/fixmap.h" #include "asm/pgalloc.h" -#include "asm/bitops.h" -#include "asm/uaccess.h" -#include "asm/tlb.h" #include "user_util.h" #include "kern_util.h" -#include "mem_user.h" -#include "mem.h" #include "kern.h" -#include "init.h" -#include "os.h" -#include "mode_kern.h" +#include "mem_user.h" #include "uml_uaccess.h" +#include "os.h" + +extern char __binary_start; /* Changed during early boot */ -pgd_t swapper_pg_dir[1024]; -unsigned long high_physmem; -unsigned long vm_start; -unsigned long vm_end; -unsigned long highmem; unsigned long *empty_zero_page = NULL; unsigned long *empty_bad_page = NULL; - -/* Not modified */ -const char bad_pmd_string[] = "Bad pmd in pte_alloc: %08lx\n"; - -extern char __init_begin, __init_end; -extern long physmem_size; - -/* Not changed by UML */ -DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); - -/* Changed during early boot */ +pgd_t swapper_pg_dir[1024]; +unsigned long highmem; int kmalloc_ok = 0; -#define NREGIONS (phys_region_index(0xffffffff) - phys_region_index(0x0) + 1) -struct mem_region *regions[NREGIONS] = { [ 0 ... NREGIONS - 1 ] = NULL }; -#define REGION_SIZE ((0xffffffff & ~REGION_MASK) + 1) - -/* Changed during early boot */ static unsigned long brk_end; +void unmap_physmem(void) +{ + os_unmap_memory((void *) brk_end, uml_reserved - brk_end); +} + static void map_cb(void *unused) { map_memory(brk_end, __pa(brk_end), uml_reserved - brk_end, 1, 1, 0); } -void unmap_physmem(void) +#ifdef CONFIG_HIGHMEM +static void setup_highmem(unsigned long highmem_start, + unsigned long highmem_len) { - os_unmap_memory((void *) brk_end, uml_reserved - brk_end); -} + struct page *page; + unsigned long highmem_pfn; + int i; -extern char __binary_start; + highmem_start_page = virt_to_page(highmem_start); + + highmem_pfn = __pa(highmem_start) >> PAGE_SHIFT; + for(i = 0; i < highmem_len >> PAGE_SHIFT; i++){ + page = &mem_map[highmem_pfn + i]; + ClearPageReserved(page); + set_bit(PG_highmem, &page->flags); + set_page_count(page, 1); + __free_page(page); + } +} +#endif void mem_init(void) { @@ -103,50 +95,15 @@ void mem_init(void) totalhigh_pages = highmem >> PAGE_SHIFT; totalram_pages += totalhigh_pages; num_physpages = totalram_pages; - max_mapnr = totalram_pages; max_pfn = totalram_pages; printk(KERN_INFO "Memory: %luk available\n", (unsigned long) nr_free_pages() << (PAGE_SHIFT-10)); kmalloc_ok = 1; -} - -/* Changed during early boot */ -static unsigned long kmem_top = 0; - -unsigned long get_kmem_end(void) -{ - if(kmem_top == 0) - kmem_top = CHOOSE_MODE(kmem_end_tt, kmem_end_skas); - return(kmem_top); -} - -void set_kmem_end(unsigned long new) -{ - kmem_top = new; -} #ifdef CONFIG_HIGHMEM -/* Changed during early boot */ -pte_t *kmap_pte; -pgprot_t kmap_prot; - -EXPORT_SYMBOL(kmap_prot); -EXPORT_SYMBOL(kmap_pte); - -#define kmap_get_fixmap_pte(vaddr) \ - pte_offset_kernel(pmd_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)) - -void __init kmap_init(void) -{ - unsigned long kmap_vstart; - - /* cache the first kmap pte */ - kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN); - kmap_pte = kmap_get_fixmap_pte(kmap_vstart); - - kmap_prot = PAGE_KERNEL; + setup_highmem(end_iomem, highmem); +#endif } -#endif /* CONFIG_HIGHMEM */ static void __init fixrange_init(unsigned long start, unsigned long end, pgd_t *pgd_base) @@ -178,76 +135,24 @@ static void __init fixrange_init(unsigne } } -int init_maps(struct mem_region *region) -{ - struct page *p, *map; - int i, n, len; - - if(region == &physmem_region){ - region->mem_map = mem_map; - return(0); - } - else if(region->mem_map != NULL) return(0); - - n = region->len >> PAGE_SHIFT; - len = n * sizeof(struct page); - if(kmalloc_ok){ - map = kmalloc(len, GFP_KERNEL); - if(map == NULL) map = vmalloc(len); - } - else map = alloc_bootmem_low_pages(len); - - if(map == NULL) - return(-ENOMEM); - for(i = 0; i < n; i++){ - p = &map[i]; - set_page_count(p, 0); - SetPageReserved(p); - INIT_LIST_HEAD(&p->list); - } - region->mem_map = map; - return(0); -} +#if CONFIG_HIGHMEM +pte_t *kmap_pte; +pgprot_t kmap_prot; -DECLARE_MUTEX(regions_sem); +#define kmap_get_fixmap_pte(vaddr) \ + pte_offset(pmd_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)) -static int setup_one_range(int fd, char *driver, unsigned long start, - unsigned long pfn, int len, - struct mem_region *region) +void __init kmap_init(void) { - int i; - - down(®ions_sem); - for(i = 0; i < NREGIONS; i++){ - if(regions[i] == NULL) break; - } - if(i == NREGIONS){ - printk("setup_range : no free regions\n"); - i = -1; - goto out; - } - - if(fd == -1) - fd = create_mem_file(len); + unsigned long kmap_vstart; - if(region == NULL){ - region = alloc_bootmem_low_pages(sizeof(*region)); - if(region == NULL) - panic("Failed to allocating mem_region"); - } + /* cache the first kmap pte */ + kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN); + kmap_pte = kmap_get_fixmap_pte(kmap_vstart); - *region = ((struct mem_region) { .driver = driver, - .start_pfn = pfn, - .start = start, - .len = len, - .fd = fd } ); - regions[i] = region; - out: - up(®ions_sem); - return(i); + kmap_prot = PAGE_KERNEL; } -#ifdef CONFIG_HIGHMEM static void init_highmem(void) { pgd_t *pgd; @@ -268,63 +173,20 @@ static void init_highmem(void) kmap_init(); } - -void setup_highmem(unsigned long len) -{ - struct mem_region *region; - struct page *page, *map; - unsigned long phys; - int i, cur, index; - - phys = physmem_size; - do { - cur = min(len, (unsigned long) REGION_SIZE); - i = setup_one_range(-1, NULL, -1, phys >> PAGE_SHIFT, cur, - NULL); - if(i == -1){ - printk("setup_highmem - setup_one_range failed\n"); - return; - } - region = regions[i]; - index = phys / PAGE_SIZE; - region->mem_map = &mem_map[index]; - - map = region->mem_map; - for(i = 0; i < (cur >> PAGE_SHIFT); i++){ - page = &map[i]; - ClearPageReserved(page); - set_bit(PG_highmem, &page->flags); - set_page_count(page, 1); - __free_page(page); - } - phys += cur; - len -= cur; - } while(len > 0); -} -#endif +#endif /* CONFIG_HIGHMEM */ void paging_init(void) { - struct mem_region *region; - unsigned long zones_size[MAX_NR_ZONES], start, end, vaddr; - int i, index; + unsigned long zones_size[MAX_NR_ZONES], vaddr; + int i; empty_zero_page = (unsigned long *) alloc_bootmem_low_pages(PAGE_SIZE); empty_bad_page = (unsigned long *) alloc_bootmem_low_pages(PAGE_SIZE); for(i=0;i> PAGE_SHIFT) - - (uml_physmem >> PAGE_SHIFT); + zones_size[0] = (end_iomem >> PAGE_SHIFT) - (uml_physmem >> PAGE_SHIFT); zones_size[2] = highmem >> PAGE_SHIFT; free_area_init(zones_size); - start = phys_region_index(__pa(uml_physmem)); - end = phys_region_index(__pa(high_physmem - 1)); - for(i = start; i <= end; i++){ - region = regions[i]; - index = (region->start - uml_physmem) / PAGE_SIZE; - region->mem_map = &mem_map[index]; - if(i > start) free_bootmem(__pa(region->start), region->len); - } /* * Fixed mappings, only the page table structure has to be @@ -335,15 +197,33 @@ void paging_init(void) #ifdef CONFIG_HIGHMEM init_highmem(); - setup_highmem(highmem); #endif } -pte_t __bad_page(void) +struct page *arch_validate(struct page *page, int mask, int order) { - clear_page(empty_bad_page); - return pte_mkdirty(mk_pte((struct page *) empty_bad_page, - PAGE_SHARED)); + unsigned long addr, zero = 0; + int i; + + again: + if(page == NULL) return(page); + if(PageHighMem(page)) return(page); + + addr = (unsigned long) page_address(page); + for(i = 0; i < (1 << order); i++){ + current->thread.fault_addr = (void *) addr; + if(__do_copy_to_user((void *) addr, &zero, + sizeof(zero), + ¤t->thread.fault_addr, + ¤t->thread.fault_catcher)){ + if(!(mask & __GFP_WAIT)) return(NULL); + else break; + } + addr += PAGE_SIZE; + } + if(i == (1 << order)) return(page); + page = alloc_pages(mask, order); + goto again; } /* This can't do anything because nothing in the kernel image can be freed @@ -401,395 +281,6 @@ void show_mem(void) printk("%d pages swap cached\n", cached); } -static int __init uml_mem_setup(char *line, int *add) -{ - char *retptr; - physmem_size = memparse(line,&retptr); - return 0; -} -__uml_setup("mem=", uml_mem_setup, -"mem=\n" -" This controls how much \"physical\" memory the kernel allocates\n" -" for the system. The size is specified as a number followed by\n" -" one of 'k', 'K', 'm', 'M', which have the obvious meanings.\n" -" This is not related to the amount of memory in the physical\n" -" machine. It can be more, and the excess, if it's ever used, will\n" -" just be swapped out.\n Example: mem=64M\n\n" -); - -struct page *arch_validate(struct page *page, int mask, int order) -{ - unsigned long addr, zero = 0; - int i; - - again: - if(page == NULL) return(page); - if(PageHighMem(page)) return(page); - - addr = (unsigned long) page_address(page); - for(i = 0; i < (1 << order); i++){ - current->thread.fault_addr = (void *) addr; - if(__do_copy_to_user((void *) addr, &zero, - sizeof(zero), - ¤t->thread.fault_addr, - ¤t->thread.fault_catcher)){ - if(!(mask & __GFP_WAIT)) return(NULL); - else break; - } - addr += PAGE_SIZE; - } - if(i == (1 << order)) return(page); - page = alloc_pages(mask, order); - goto again; -} - -DECLARE_MUTEX(vm_reserved_sem); -static struct list_head vm_reserved = LIST_HEAD_INIT(vm_reserved); - -/* Static structures, linked in to the list in early boot */ -static struct vm_reserved head = { - .list = LIST_HEAD_INIT(head.list), - .start = 0, - .end = 0xffffffff -}; - -static struct vm_reserved tail = { - .list = LIST_HEAD_INIT(tail.list), - .start = 0, - .end = 0xffffffff -}; - -void set_usable_vm(unsigned long start, unsigned long end) -{ - list_add(&head.list, &vm_reserved); - list_add(&tail.list, &head.list); - head.end = start; - tail.start = end; -} - -int reserve_vm(unsigned long start, unsigned long end, void *e) - -{ - struct vm_reserved *entry = e, *reserved, *prev; - struct list_head *ele; - int err; - - down(&vm_reserved_sem); - list_for_each(ele, &vm_reserved){ - reserved = list_entry(ele, struct vm_reserved, list); - if(reserved->start >= end) goto found; - } - panic("Reserved vm out of range"); - found: - prev = list_entry(ele->prev, struct vm_reserved, list); - if(prev->end > start) - panic("Can't reserve vm"); - if(entry == NULL) - entry = kmalloc(sizeof(*entry), GFP_KERNEL); - if(entry == NULL){ - printk("reserve_vm : Failed to allocate entry\n"); - err = -ENOMEM; - goto out; - } - *entry = ((struct vm_reserved) - { .list = LIST_HEAD_INIT(entry->list), - .start = start, - .end = end }); - list_add(&entry->list, &prev->list); - err = 0; - out: - up(&vm_reserved_sem); - return(0); -} - -unsigned long get_vm(unsigned long len) -{ - struct vm_reserved *this, *next; - struct list_head *ele; - unsigned long start; - int err; - - down(&vm_reserved_sem); - list_for_each(ele, &vm_reserved){ - this = list_entry(ele, struct vm_reserved, list); - next = list_entry(ele->next, struct vm_reserved, list); - if((this->start < next->start) && - (this->end + len + PAGE_SIZE <= next->start)) - goto found; - } - up(&vm_reserved_sem); - return(0); - found: - up(&vm_reserved_sem); - start = (unsigned long) UML_ROUND_UP(this->end) + PAGE_SIZE; - err = reserve_vm(start, start + len, NULL); - if(err) return(0); - return(start); -} - -int nregions(void) -{ - return(NREGIONS); -} - -void setup_range(int fd, char *driver, unsigned long start, unsigned long pfn, - unsigned long len, int need_vm, struct mem_region *region, - void *reserved) -{ - int i, cur; - - do { - cur = min(len, (unsigned long) REGION_SIZE); - i = setup_one_range(fd, driver, start, pfn, cur, region); - region = regions[i]; - if(need_vm && setup_region(region, reserved)){ - kfree(region); - regions[i] = NULL; - return; - } - start += cur; - if(pfn != -1) pfn += cur; - len -= cur; - } while(len > 0); -} - -struct iomem { - char *name; - int fd; - unsigned long size; -}; - -/* iomem regions can only be added on the command line at the moment. - * Locking will be needed when they can be added via mconsole. - */ - -struct iomem iomem_regions[NREGIONS] = { [ 0 ... NREGIONS - 1 ] = - { .name = NULL, - .fd = -1, - .size = 0 } }; - -int num_iomem_regions = 0; - -void add_iomem(char *name, int fd, unsigned long size) -{ - if(num_iomem_regions == sizeof(iomem_regions)/sizeof(iomem_regions[0])) - return; - size = (size + PAGE_SIZE - 1) & PAGE_MASK; - iomem_regions[num_iomem_regions++] = - ((struct iomem) { .name = name, - .fd = fd, - .size = size } ); -} - -int setup_iomem(void) -{ - struct iomem *iomem; - int i; - - for(i = 0; i < num_iomem_regions; i++){ - iomem = &iomem_regions[i]; - setup_range(iomem->fd, iomem->name, -1, -1, iomem->size, 1, - NULL, NULL); - } - return(0); -} - -__initcall(setup_iomem); - -#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT) -#define PFN_DOWN(x) ((x) >> PAGE_SHIFT) - -/* Changed during early boot */ -static struct mem_region physmem_region; -static struct vm_reserved physmem_reserved; - -void setup_physmem(unsigned long start, unsigned long reserve_end, - unsigned long len) -{ - struct mem_region *region = &physmem_region; - struct vm_reserved *reserved = &physmem_reserved; - unsigned long cur, pfn = 0; - int do_free = 1, bootmap_size; - - do { - cur = min(len, (unsigned long) REGION_SIZE); - if(region == NULL) - region = alloc_bootmem_low_pages(sizeof(*region)); - if(reserved == NULL) - reserved = alloc_bootmem_low_pages(sizeof(*reserved)); - if((region == NULL) || (reserved == NULL)) - panic("Couldn't allocate physmem region or vm " - "reservation\n"); - setup_range(-1, NULL, start, pfn, cur, 1, region, reserved); - - if(do_free){ - unsigned long reserve = reserve_end - start; - int pfn = PFN_UP(__pa(reserve_end)); - int delta = (len - reserve) >> PAGE_SHIFT; - - bootmap_size = init_bootmem(pfn, pfn + delta); - free_bootmem(__pa(reserve_end) + bootmap_size, - cur - bootmap_size - reserve); - do_free = 0; - } - start += cur; - pfn += cur >> PAGE_SHIFT; - len -= cur; - region = NULL; - reserved = NULL; - } while(len > 0); -} - -struct mem_region *phys_region(unsigned long phys) -{ - unsigned int n = phys_region_index(phys); - - if(regions[n] == NULL) - panic("Physical address in uninitialized region"); - return(regions[n]); -} - -unsigned long phys_offset(unsigned long phys) -{ - return(phys_addr(phys)); -} - -struct page *phys_mem_map(unsigned long phys) -{ - return((struct page *) phys_region(phys)->mem_map); -} - -struct page *pte_mem_map(pte_t pte) -{ - return(phys_mem_map(pte_val(pte))); -} - -struct mem_region *page_region(struct page *page, int *index_out) -{ - int i; - struct mem_region *region; - struct page *map; - - for(i = 0; i < NREGIONS; i++){ - region = regions[i]; - if(region == NULL) continue; - map = region->mem_map; - if((page >= map) && (page < &map[region->len >> PAGE_SHIFT])){ - if(index_out != NULL) *index_out = i; - return(region); - } - } - panic("No region found for page"); - return(NULL); -} - -unsigned long page_to_pfn(struct page *page) -{ - struct mem_region *region = page_region(page, NULL); - - return(region->start_pfn + (page - (struct page *) region->mem_map)); -} - -struct mem_region *pfn_to_region(unsigned long pfn, int *index_out) -{ - struct mem_region *region; - int i; - - for(i = 0; i < NREGIONS; i++){ - region = regions[i]; - if(region == NULL) - continue; - - if((region->start_pfn <= pfn) && - (region->start_pfn + (region->len >> PAGE_SHIFT) > pfn)){ - if(index_out != NULL) - *index_out = i; - return(region); - } - } - return(NULL); -} - -struct page *pfn_to_page(unsigned long pfn) -{ - struct mem_region *region = pfn_to_region(pfn, NULL); - struct page *mem_map = (struct page *) region->mem_map; - - return(&mem_map[pfn - region->start_pfn]); -} - -unsigned long phys_to_pfn(unsigned long p) -{ - struct mem_region *region = regions[phys_region_index(p)]; - - return(region->start_pfn + (phys_addr(p) >> PAGE_SHIFT)); -} - -unsigned long pfn_to_phys(unsigned long pfn) -{ - int n; - struct mem_region *region = pfn_to_region(pfn, &n); - - return(mk_phys((pfn - region->start_pfn) << PAGE_SHIFT, n)); -} - -struct page *page_mem_map(struct page *page) -{ - return((struct page *) page_region(page, NULL)->mem_map); -} - -extern unsigned long region_pa(void *virt) -{ - struct mem_region *region; - unsigned long addr = (unsigned long) virt; - int i; - - for(i = 0; i < NREGIONS; i++){ - region = regions[i]; - if(region == NULL) continue; - if((region->start <= addr) && - (addr <= region->start + region->len)) - return(mk_phys(addr - region->start, i)); - } - panic("region_pa : no region for virtual address"); - return(0); -} - -extern void *region_va(unsigned long phys) -{ - return((void *) (phys_region(phys)->start + phys_addr(phys))); -} - -unsigned long page_to_phys(struct page *page) -{ - int n; - struct mem_region *region = page_region(page, &n); - struct page *map = region->mem_map; - return(mk_phys((page - map) << PAGE_SHIFT, n)); -} - -struct page *phys_to_page(unsigned long phys) -{ - struct page *mem_map; - - mem_map = phys_mem_map(phys); - return(mem_map + (phys_offset(phys) >> PAGE_SHIFT)); -} - -static int setup_mem_maps(void) -{ - struct mem_region *region; - int i; - - for(i = 0; i < NREGIONS; i++){ - region = regions[i]; - if((region != NULL) && (region->fd > 0)) init_maps(region); - } - return(0); -} - -__initcall(setup_mem_maps); - /* * Allocate and free page tables. */ diff -puN arch/um/kernel/mem_user.c~Main-uml-patch-no-skas arch/um/kernel/mem_user.c --- uml-linux-2.6.7/arch/um/kernel/mem_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.533316408 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/mem_user.c 2004-06-29 21:02:55.729286616 +0200 @@ -34,10 +34,9 @@ #include #include #include -#include #include #include -#include +#include #include #include #include "kern_util.h" @@ -47,105 +46,145 @@ #include "init.h" #include "os.h" #include "tempfile.h" +#include "kern_constants.h" extern struct mem_region physmem_region; #define TEMPNAME_TEMPLATE "vm_file-XXXXXX" -int create_mem_file(unsigned long len) +static int create_tmp_file(unsigned long len) { - int fd; + int fd, err; char zero; fd = make_tempfile(TEMPNAME_TEMPLATE, NULL, 1); - if (fchmod(fd, 0777) < 0){ - perror("fchmod"); + if(fd < 0) { + os_print_error(fd, "make_tempfile"); + exit(1); + } + + err = os_mode_fd(fd, 0777); + if(err < 0){ + os_print_error(err, "os_mode_fd"); exit(1); } - if(os_seek_file(fd, len) < 0){ - perror("lseek"); + err = os_seek_file(fd, len); + if(err < 0){ + os_print_error(err, "os_seek_file"); exit(1); } zero = 0; - if(write(fd, &zero, 1) != 1){ - perror("write"); + err = os_write_file(fd, &zero, 1); + if(err != 1){ + os_print_error(err, "os_write_file"); exit(1); } - if(fcntl(fd, F_SETFD, 1) != 0) - perror("Setting FD_CLOEXEC failed"); + return(fd); } -int setup_region(struct mem_region *region, void *entry) +static int have_devanon = 0; + +void check_devanon(void) +{ + int fd; + + printk("Checking for /dev/anon on the host..."); + fd = open("/dev/anon", O_RDWR); + if(fd < 0){ + printk("Not available (open failed with errno %d)\n", errno); + return; + } + + printk("OK\n"); + have_devanon = 1; +} + +static int create_anon_file(unsigned long len) { - void *loc, *start; - char *driver; - int err, offset; - - if(region->start != -1){ - err = reserve_vm(region->start, - region->start + region->len, entry); - if(err){ - printk("setup_region : failed to reserve " - "0x%x - 0x%x for driver '%s'\n", - region->start, - region->start + region->len, - region->driver); - return(-1); - } - } - else region->start = get_vm(region->len); - if(region->start == 0){ - if(region->driver == NULL) driver = "physmem"; - else driver = region->driver; - printk("setup_region : failed to find vm for " - "driver '%s' (length %d)\n", driver, region->len); - return(-1); - } - if(region->start == uml_physmem){ - start = (void *) uml_reserved; - offset = uml_reserved - uml_physmem; - } - else { - start = (void *) region->start; - offset = 0; - } - - loc = mmap(start, region->len - offset, PROT_READ | PROT_WRITE, - MAP_SHARED | MAP_FIXED, region->fd, offset); - if(loc != start){ - perror("Mapping memory"); + void *addr; + int fd; + + fd = open("/dev/anon", O_RDWR); + if(fd < 0) { + os_print_error(fd, "opening /dev/anon"); exit(1); } - return(0); + + addr = mmap(NULL, len, PROT_READ | PROT_WRITE , MAP_PRIVATE, fd, 0); + if(addr == MAP_FAILED){ + os_print_error((int) addr, "mapping physmem file"); + exit(1); + } + munmap(addr, len); + + return(fd); +} + +int create_mem_file(unsigned long len) +{ + int err, fd; + + if(have_devanon) + fd = create_anon_file(len); + else fd = create_tmp_file(len); + + err = os_set_exec_close(fd, 1); + if(err < 0) + os_print_error(err, "exec_close"); + return(fd); } +struct iomem_region *iomem_regions = NULL; +int iomem_size = 0; + static int __init parse_iomem(char *str, int *add) { - struct stat buf; + struct iomem_region *new; + struct uml_stat buf; char *file, *driver; - int fd; + int fd, err; driver = str; file = strchr(str,','); if(file == NULL){ - printk("parse_iomem : failed to parse iomem\n"); - return(1); + printf("parse_iomem : failed to parse iomem\n"); + goto out; } *file = '\0'; file++; fd = os_open_file(file, of_rdwr(OPENFLAGS()), 0); if(fd < 0){ - printk("parse_iomem - Couldn't open io file, errno = %d\n", - errno); - return(1); - } - if(fstat(fd, &buf) < 0) { - printk("parse_iomem - cannot fstat file, errno = %d\n", errno); - return(1); + os_print_error(fd, "parse_iomem - Couldn't open io file"); + goto out; } - add_iomem(driver, fd, buf.st_size); + + err = os_stat_fd(fd, &buf); + if(err < 0){ + os_print_error(err, "parse_iomem - cannot stat_fd file"); + goto out_close; + } + + new = malloc(sizeof(*new)); + if(new == NULL){ + perror("Couldn't allocate iomem_region struct"); + goto out_close; + } + + *new = ((struct iomem_region) { .next = iomem_regions, + .driver = driver, + .fd = fd, + .size = buf.ust_size, + .phys = 0, + .virt = 0 }); + iomem_regions = new; + iomem_size += new->size + UM_KERN_PAGE_SIZE; + return(0); + out_close: + os_close_file(fd); + out: + return(1); } __uml_setup("iomem=", parse_iomem, @@ -153,73 +192,20 @@ __uml_setup("iomem=", parse_iomem, " Configure as an IO memory region named .\n\n" ); -#ifdef notdef -int logging = 0; -int logging_fd = -1; - -int logging_line = 0; -char logging_buf[256]; - -void log(char *fmt, ...) -{ - va_list ap; - struct timeval tv; - struct openflags flags; - - if(logging == 0) return; - if(logging_fd < 0){ - flags = of_create(of_trunc(of_rdrw(OPENFLAGS()))); - logging_fd = os_open_file("log", flags, 0644); - } - gettimeofday(&tv, NULL); - sprintf(logging_buf, "%d\t %u.%u ", logging_line++, tv.tv_sec, - tv.tv_usec); - va_start(ap, fmt); - vsprintf(&logging_buf[strlen(logging_buf)], fmt, ap); - va_end(ap); - write(logging_fd, logging_buf, strlen(logging_buf)); -} -#endif - -int map_memory(unsigned long virt, unsigned long phys, unsigned long len, - int r, int w, int x) -{ - struct mem_region *region = phys_region(phys); - - return(os_map_memory((void *) virt, region->fd, phys_offset(phys), len, - r, w, x)); -} - int protect_memory(unsigned long addr, unsigned long len, int r, int w, int x, int must_succeed) { - if(os_protect_memory((void *) addr, len, r, w, x) < 0){ + int err; + + err = os_protect_memory((void *) addr, len, r, w, x); + if(err < 0){ if(must_succeed) - panic("protect failed, errno = %d", errno); - else return(-errno); + panic("protect failed, err = %d", -err); + else return(err); } return(0); } -unsigned long find_iomem(char *driver, unsigned long *len_out) -{ - struct mem_region *region; - int i, n; - - n = nregions(); - for(i = 0; i < n; i++){ - region = regions[i]; - if(region == NULL) continue; - if((region->driver != NULL) && - !strcmp(region->driver, driver)){ - *len_out = region->len; - return(region->start); - } - } - *len_out = 0; - return 0; -} - /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff -puN /dev/null arch/um/kernel/physmem.c --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/kernel/physmem.c 2004-06-29 21:02:55.730286464 +0200 @@ -0,0 +1,468 @@ +/* + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + +#include "linux/mm.h" +#include "linux/ghash.h" +#include "linux/slab.h" +#include "linux/vmalloc.h" +#include "linux/bootmem.h" +#include "asm/types.h" +#include "asm/pgtable.h" +#include "kern_util.h" +#include "user_util.h" +#include "mode_kern.h" +#include "mem.h" +#include "mem_user.h" +#include "os.h" +#include "kern.h" +#include "init.h" + +#if 0 +static pgd_t physmem_pgd[PTRS_PER_PGD]; + +static struct phys_desc *lookup_mapping(void *addr) +{ + pgd = &physmem_pgd[pgd_index(addr)]; + if(pgd_none(pgd)) + return(NULL); + + pmd = pmd_offset(pgd, addr); + if(pmd_none(pmd)) + return(NULL); + + pte = pte_offset_kernel(pmd, addr); + return((struct phys_desc *) pte_val(pte)); +} + +static struct add_mapping(void *addr, struct phys_desc *new) +{ +} +#endif + +#define PHYS_HASHSIZE (8192) + +struct phys_desc; + +DEF_HASH_STRUCTS(virtmem, PHYS_HASHSIZE, struct phys_desc); + +struct phys_desc { + struct virtmem_ptrs virt_ptrs; + int fd; + __u64 offset; + void *virt; + unsigned long phys; + struct list_head list; +}; + +struct virtmem_table virtmem_hash; + +static int virt_cmp(void *virt1, void *virt2) +{ + return(virt1 != virt2); +} + +static int virt_hash(void *virt) +{ + unsigned long addr = ((unsigned long) virt) >> PAGE_SHIFT; + return(addr % PHYS_HASHSIZE); +} + +DEF_HASH(static, virtmem, struct phys_desc, virt_ptrs, void *, virt, virt_cmp, + virt_hash); + +LIST_HEAD(descriptor_mappings); + +struct desc_mapping { + int fd; + struct list_head list; + struct list_head pages; +}; + +static struct desc_mapping *find_mapping(int fd) +{ + struct desc_mapping *desc; + struct list_head *ele; + + list_for_each(ele, &descriptor_mappings){ + desc = list_entry(ele, struct desc_mapping, list); + if(desc->fd == fd) + return(desc); + } + + return(NULL); +} + +static struct desc_mapping *descriptor_mapping(int fd) +{ + struct desc_mapping *desc; + + desc = find_mapping(fd); + if(desc != NULL) + return(desc); + + desc = kmalloc(sizeof(*desc), GFP_ATOMIC); + if(desc == NULL) + return(NULL); + + *desc = ((struct desc_mapping) + { .fd = fd, + .list = LIST_HEAD_INIT(desc->list), + .pages = LIST_HEAD_INIT(desc->pages) }); + list_add(&desc->list, &descriptor_mappings); + + return(desc); +} + +int physmem_subst_mapping(void *virt, int fd, __u64 offset, int w) +{ + struct desc_mapping *fd_maps; + struct phys_desc *desc; + unsigned long phys; + int err; + + fd_maps = descriptor_mapping(fd); + if(fd_maps == NULL) + return(-ENOMEM); + + phys = __pa(virt); + if(find_virtmem_hash(&virtmem_hash, virt) != NULL) + panic("Address 0x%p is already substituted\n", virt); + + err = -ENOMEM; + desc = kmalloc(sizeof(*desc), GFP_ATOMIC); + if(desc == NULL) + goto out; + + *desc = ((struct phys_desc) + { .virt_ptrs = { NULL, NULL }, + .fd = fd, + .offset = offset, + .virt = virt, + .phys = __pa(virt), + .list = LIST_HEAD_INIT(desc->list) }); + insert_virtmem_hash(&virtmem_hash, desc); + + list_add(&desc->list, &fd_maps->pages); + + virt = (void *) ((unsigned long) virt & PAGE_MASK); + err = os_map_memory(virt, fd, offset, PAGE_SIZE, 1, w, 0); + if(!err) + goto out; + + remove_virtmem_hash(&virtmem_hash, desc); + kfree(desc); + out: + return(err); +} + +static int physmem_fd = -1; + +static void remove_mapping(struct phys_desc *desc) +{ + void *virt = desc->virt; + int err; + + remove_virtmem_hash(&virtmem_hash, desc); + list_del(&desc->list); + kfree(desc); + + err = os_map_memory(virt, physmem_fd, __pa(virt), PAGE_SIZE, 1, 1, 0); + if(err) + panic("Failed to unmap block device page from physical memory, " + "errno = %d", -err); +} + +int physmem_remove_mapping(void *virt) +{ + struct phys_desc *desc; + + virt = (void *) ((unsigned long) virt & PAGE_MASK); + desc = find_virtmem_hash(&virtmem_hash, virt); + if(desc == NULL) + return(0); + + remove_mapping(desc); + return(1); +} + +void physmem_forget_descriptor(int fd) +{ + struct desc_mapping *desc; + struct phys_desc *page; + struct list_head *ele, *next; + __u64 offset; + void *addr; + int err; + + desc = find_mapping(fd); + if(desc == NULL) + return; + + list_for_each_safe(ele, next, &desc->pages){ + page = list_entry(ele, struct phys_desc, list); + offset = page->offset; + addr = page->virt; + remove_mapping(page); + err = os_seek_file(fd, offset); + if(err) + panic("physmem_forget_descriptor - failed to seek " + "to %lld in fd %d, error = %d\n", + offset, fd, -err); + err = os_read_file(fd, addr, PAGE_SIZE); + if(err < 0) + panic("physmem_forget_descriptor - failed to read " + "from fd %d to 0x%p, error = %d\n", + fd, addr, -err); + } + + list_del(&desc->list); + kfree(desc); +} + +void arch_free_page(struct page *page, int order) +{ + void *virt; + int i; + + for(i = 0; i < (1 << order); i++){ + virt = __va(page_to_phys(page + i)); + physmem_remove_mapping(virt); + } +} + +int is_remapped(void *virt) +{ + return(find_virtmem_hash(&virtmem_hash, virt) != NULL); +} + +/* Changed during early boot */ +unsigned long high_physmem; + +extern unsigned long physmem_size; + +void *to_virt(unsigned long phys) +{ + return((void *) uml_physmem + phys); +} + +unsigned long to_phys(void *virt) +{ + return(((unsigned long) virt) - uml_physmem); +} + +int init_maps(unsigned long physmem, unsigned long iomem, unsigned long highmem) +{ + struct page *p, *map; + unsigned long phys_len, phys_pages, highmem_len, highmem_pages; + unsigned long iomem_len, iomem_pages, total_len, total_pages; + int i; + + phys_pages = physmem >> PAGE_SHIFT; + phys_len = phys_pages * sizeof(struct page); + + iomem_pages = iomem >> PAGE_SHIFT; + iomem_len = iomem_pages * sizeof(struct page); + + highmem_pages = highmem >> PAGE_SHIFT; + highmem_len = highmem_pages * sizeof(struct page); + + total_pages = phys_pages + iomem_pages + highmem_pages; + total_len = phys_len + iomem_pages + highmem_len; + + if(kmalloc_ok){ + map = kmalloc(total_len, GFP_KERNEL); + if(map == NULL) + map = vmalloc(total_len); + } + else map = alloc_bootmem_low_pages(total_len); + + if(map == NULL) + return(-ENOMEM); + + for(i = 0; i < total_pages; i++){ + p = &map[i]; + set_page_count(p, 0); + SetPageReserved(p); + INIT_LIST_HEAD(&p->lru); + } + + mem_map = map; + max_mapnr = total_pages; + return(0); +} + +struct page *phys_to_page(const unsigned long phys) +{ + return(&mem_map[phys >> PAGE_SHIFT]); +} + +struct page *__virt_to_page(const unsigned long virt) +{ + return(&mem_map[__pa(virt) >> PAGE_SHIFT]); +} + +unsigned long page_to_phys(struct page *page) +{ + return((page - mem_map) << PAGE_SHIFT); +} + +pte_t mk_pte(struct page *page, pgprot_t pgprot) +{ + pte_t pte; + + pte_val(pte) = page_to_phys(page) + pgprot_val(pgprot); + if(pte_present(pte)) pte_mknewprot(pte_mknewpage(pte)); + return(pte); +} + +/* Changed during early boot */ +static unsigned long kmem_top = 0; + +unsigned long get_kmem_end(void) +{ + if(kmem_top == 0) + kmem_top = CHOOSE_MODE(kmem_end_tt, kmem_end_skas); + return(kmem_top); +} + +void map_memory(unsigned long virt, unsigned long phys, unsigned long len, + int r, int w, int x) +{ + __u64 offset; + int fd, err; + + fd = phys_mapping(phys, &offset); + err = os_map_memory((void *) virt, fd, offset, len, r, w, x); + if(err) + panic("map_memory(0x%lx, %d, 0x%llx, %ld, %d, %d, %d) failed, " + "err = %d\n", virt, fd, offset, len, r, w, x, err); +} + +#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT) + +void setup_physmem(unsigned long start, unsigned long reserve_end, + unsigned long len, unsigned long highmem) +{ + unsigned long reserve = reserve_end - start; + int pfn = PFN_UP(__pa(reserve_end)); + int delta = (len - reserve) >> PAGE_SHIFT; + int err, offset, bootmap_size; + + physmem_fd = create_mem_file(len + highmem); + + offset = uml_reserved - uml_physmem; + err = os_map_memory((void *) uml_reserved, physmem_fd, offset, + len - offset, 1, 1, 0); + if(err < 0){ + os_print_error(err, "Mapping memory"); + exit(1); + } + + bootmap_size = init_bootmem(pfn, pfn + delta); + free_bootmem(__pa(reserve_end) + bootmap_size, + len - bootmap_size - reserve); +} + +int phys_mapping(unsigned long phys, __u64 *offset_out) +{ + struct phys_desc *desc = find_virtmem_hash(&virtmem_hash, + __va(phys & PAGE_MASK)); + int fd = -1; + + if(desc != NULL){ + fd = desc->fd; + *offset_out = desc->offset; + } + else if(phys < physmem_size){ + fd = physmem_fd; + *offset_out = phys; + } + else if(phys < __pa(end_iomem)){ + struct iomem_region *region = iomem_regions; + + while(region != NULL){ + if((phys >= region->phys) && + (phys < region->phys + region->size)){ + fd = region->fd; + *offset_out = phys - region->phys; + break; + } + region = region->next; + } + } + else if(phys < __pa(end_iomem) + highmem){ + fd = physmem_fd; + *offset_out = phys - iomem_size; + } + + return(fd); +} + +static int __init uml_mem_setup(char *line, int *add) +{ + char *retptr; + physmem_size = memparse(line,&retptr); + return 0; +} +__uml_setup("mem=", uml_mem_setup, +"mem=\n" +" This controls how much \"physical\" memory the kernel allocates\n" +" for the system. The size is specified as a number followed by\n" +" one of 'k', 'K', 'm', 'M', which have the obvious meanings.\n" +" This is not related to the amount of memory in the host. It can\n" +" be more, and the excess, if it's ever used, will just be swapped out.\n" +" Example: mem=64M\n\n" +); + +unsigned long find_iomem(char *driver, unsigned long *len_out) +{ + struct iomem_region *region = iomem_regions; + + while(region != NULL){ + if(!strcmp(region->driver, driver)){ + *len_out = region->size; + return(region->virt); + } + } + + return(0); +} + +int setup_iomem(void) +{ + struct iomem_region *region = iomem_regions; + unsigned long iomem_start = high_physmem + PAGE_SIZE; + int err; + + while(region != NULL){ + err = os_map_memory((void *) iomem_start, region->fd, 0, + region->size, 1, 1, 0); + if(err) + printk("Mapping iomem region for driver '%s' failed, " + "errno = %d\n", region->driver, -err); + else { + region->virt = iomem_start; + region->phys = __pa(region->virt); + } + + iomem_start += region->size + PAGE_SIZE; + region = region->next; + } + + return(0); +} + +__initcall(setup_iomem); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN arch/um/kernel/process.c~Main-uml-patch-no-skas arch/um/kernel/process.c --- uml-linux-2.6.7/arch/um/kernel/process.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.534316256 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/process.c 2004-06-29 21:02:55.731286312 +0200 @@ -9,12 +9,10 @@ #include #include #include -#include #include #include #include #include -#include #include #include #include @@ -58,7 +56,11 @@ void init_new_thread_signals(int altstac { int flags = altstack ? SA_ONSTACK : 0; - set_handler(SIGSEGV, (__sighandler_t) sig_handler, flags, + /* NODEFER is set here because SEGV isn't turned back on when the + * handler is ready to receive signals. This causes any segfault + * during a copy_user to kill the process because the fault is blocked. + */ + set_handler(SIGSEGV, (__sighandler_t) sig_handler, flags | SA_NODEFER, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1); set_handler(SIGTRAP, (__sighandler_t) sig_handler, flags, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1); @@ -72,7 +74,6 @@ void init_new_thread_signals(int altstac SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1); set_handler(SIGUSR2, (__sighandler_t) sig_handler, SA_NOMASK | flags, -1); - (void) CHOOSE_MODE(signal(SIGCHLD, SIG_IGN), (void *) 0); signal(SIGHUP, SIG_IGN); init_irq_signals(altstack); @@ -123,11 +124,12 @@ int start_fork_tramp(void *thread_arg, u /* Start the process and wait for it to kill itself */ new_pid = clone(outer_tramp, (void *) sp, clone_flags, &arg); if(new_pid < 0) return(-errno); - while((err = waitpid(new_pid, &status, 0) < 0) && (errno == EINTR)) ; + while(((err = waitpid(new_pid, &status, 0)) < 0) && (errno == EINTR)) ; if(err < 0) panic("Waiting for outer trampoline failed - errno = %d", errno); if(!WIFSIGNALED(status) || (WTERMSIG(status) != SIGKILL)) - panic("outer trampoline didn't exit with SIGKILL"); + panic("outer trampoline didn't exit with SIGKILL, " + "status = %d", status); return(arg.pid); } @@ -138,7 +140,7 @@ void suspend_new_thread(int fd) os_stop_process(os_getpid()); - if(read(fd, &c, sizeof(c)) != sizeof(c)) + if(os_read_file(fd, &c, sizeof(c)) != sizeof(c)) panic("read failed in suspend_new_thread"); } @@ -233,7 +235,7 @@ int run_kernel_thread(int (*fn)(void *), int n; *jmp_ptr = &buf; - n = setjmp(buf); + n = sigsetjmp(buf, 1); if(n != 0) return(n); (*fn)(arg); @@ -273,7 +275,7 @@ int can_do_skas(void) stop_ptraced_child(pid, stack, 1); printf("Checking for /proc/mm..."); - if(access("/proc/mm", W_OK)){ + if(os_access("/proc/mm", OS_ACC_W_OK) < 0){ printf("not found\n"); ret = 0; } diff -puN arch/um/kernel/process_kern.c~Main-uml-patch-no-skas arch/um/kernel/process_kern.c --- uml-linux-2.6.7/arch/um/kernel/process_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.535316104 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/process_kern.c 2004-06-29 21:02:55.731286312 +0200 @@ -16,6 +16,7 @@ #include "linux/module.h" #include "linux/init.h" #include "linux/capability.h" +#include "linux/spinlock.h" #include "asm/unistd.h" #include "asm/mman.h" #include "asm/segment.h" @@ -23,7 +24,6 @@ #include "asm/pgtable.h" #include "asm/processor.h" #include "asm/tlbflush.h" -#include "asm/spinlock.h" #include "asm/uaccess.h" #include "asm/user.h" #include "user_util.h" @@ -52,17 +52,12 @@ struct cpu_task cpu_tasks[NR_CPUS] = { [ struct task_struct *get_task(int pid, int require) { - struct task_struct *task, *ret; + struct task_struct *ret; - ret = NULL; read_lock(&tasklist_lock); - for_each_process(task){ - if(task->pid == pid){ - ret = task; - break; - } - } + ret = find_task_by_pid(pid); read_unlock(&tasklist_lock); + if(require && (ret == NULL)) panic("get_task couldn't find a task\n"); return(ret); } @@ -95,7 +90,8 @@ unsigned long alloc_stack(int order, int int flags = GFP_KERNEL; if(atomic) flags |= GFP_ATOMIC; - if((page = __get_free_pages(flags, order)) == 0) + page = __get_free_pages(flags, order); + if(page == 0) return(0); stack_protections(page); return(page); @@ -103,13 +99,15 @@ unsigned long alloc_stack(int order, int int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) { - struct task_struct *p; + int pid; current->thread.request.u.thread.proc = fn; current->thread.request.u.thread.arg = arg; - p = do_fork(CLONE_VM | flags, 0, NULL, 0, NULL, NULL); - if(IS_ERR(p)) panic("do_fork failed in kernel_thread"); - return(p->pid); + pid = do_fork(CLONE_VM | CLONE_UNTRACED | flags, 0, NULL, 0, NULL, + NULL); + if(pid < 0) + panic("do_fork failed in kernel_thread, errno = %d", pid); + return(pid); } void switch_mm(struct mm_struct *prev, struct mm_struct *next, @@ -129,7 +127,7 @@ void set_current(void *t) { external_pid(task), task }); } -void *switch_to(void *prev, void *next, void *last) +void *_switch_to(void *prev, void *next, void *last) { return(CHOOSE_MODE(switch_to_tt(prev, next), switch_to_skas(prev, next))); @@ -149,7 +147,7 @@ void release_thread(struct task_struct * void exit_thread(void) { CHOOSE_MODE(exit_thread_tt(), exit_thread_skas()); - unprotect_stack((unsigned long) current->thread_info); + unprotect_stack((unsigned long) current_thread); } void *get_current(void) @@ -157,6 +155,10 @@ void *get_current(void) return(current); } +void prepare_to_copy(struct task_struct *tsk) +{ +} + int copy_thread(int nr, unsigned long clone_flags, unsigned long sp, unsigned long stack_top, struct task_struct * p, struct pt_regs *regs) @@ -190,7 +192,7 @@ int current_pid(void) void default_idle(void) { - idle_timer(); + uml_idle_timer(); atomic_inc(&init_mm.mm_count); current->mm = &init_mm; @@ -367,10 +369,15 @@ int clear_user_proc(void *buf, int size) return(clear_user(buf, size)); } +int strlen_user_proc(char *str) +{ + return(strlen_user(str)); +} + int smp_sigio_handler(void) { #ifdef CONFIG_SMP - int cpu = current->thread_info->cpu; + int cpu = current_thread->cpu; IPI_handler(cpu); if(cpu != 0) return(1); @@ -385,7 +392,7 @@ int um_in_interrupt(void) int cpu(void) { - return(current->thread_info->cpu); + return(current_thread->cpu); } /* diff -puN arch/um/kernel/ptrace.c~Main-uml-patch-no-skas arch/um/kernel/ptrace.c --- uml-linux-2.6.7/arch/um/kernel/ptrace.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.536315952 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/ptrace.c 2004-06-29 21:02:55.731286312 +0200 @@ -24,11 +24,6 @@ void ptrace_disable(struct task_struct * { } -extern long do_mmap2(struct task_struct *task, unsigned long addr, - unsigned long len, unsigned long prot, - unsigned long flags, unsigned long fd, - unsigned long pgoff); - int sys_ptrace(long request, long pid, long addr, long data) { struct task_struct *child; @@ -302,8 +297,17 @@ int sys_ptrace(long request, long pid, l return ret; } -void syscall_trace(void) +void syscall_trace(union uml_pt_regs *regs, int entryexit) { + if (unlikely(current->audit_context)) { + if (!entryexit) + audit_syscall_entry(current, regs->orig_eax, + regs->ebx, regs->ecx, + regs->edx, regs->esi); + else + audit_syscall_exit(current, regs->eax); + } + if (!test_thread_flag(TIF_SYSCALL_TRACE)) return; if (!(current->ptrace & PT_PTRACED)) @@ -311,11 +315,8 @@ void syscall_trace(void) /* the 0x80 provides a way for the tracing parent to distinguish between a syscall stop and SIGTRAP delivery */ - current->exit_code = SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) - ? 0x80 : 0); - current->state = TASK_STOPPED; - notify_parent(current, SIGCHLD); - schedule(); + ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) + ? 0x80 : 0)); /* * this isn't the same as continuing with a signal, but it will do diff -puN arch/um/kernel/reboot.c~Main-uml-patch-no-skas arch/um/kernel/reboot.c --- uml-linux-2.6.7/arch/um/kernel/reboot.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.537315800 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/reboot.c 2004-06-29 21:02:55.732286160 +0200 @@ -15,6 +15,7 @@ #ifdef CONFIG_SMP static void kill_idlers(int me) { +#ifdef CONFIG_MODE_TT struct task_struct *p; int i; @@ -23,6 +24,7 @@ static void kill_idlers(int me) if((p != NULL) && (p->thread.mode.tt.extern_pid != me)) os_kill_process(p->thread.mode.tt.extern_pid, 0); } +#endif } #endif diff -puN arch/um/kernel/sigio_kern.c~Main-uml-patch-no-skas arch/um/kernel/sigio_kern.c --- uml-linux-2.6.7/arch/um/kernel/sigio_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.539315496 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/sigio_kern.c 2004-06-29 21:02:55.732286160 +0200 @@ -6,18 +6,21 @@ #include "linux/kernel.h" #include "linux/list.h" #include "linux/slab.h" -#include "asm/irq.h" +#include "linux/signal.h" +#include "linux/interrupt.h" #include "init.h" #include "sigio.h" #include "irq_user.h" +#include "irq_kern.h" /* Protected by sigio_lock() called from write_sigio_workaround */ static int sigio_irq_fd = -1; -void sigio_interrupt(int irq, void *data, struct pt_regs *unused) +irqreturn_t sigio_interrupt(int irq, void *data, struct pt_regs *unused) { read_sigio_fd(sigio_irq_fd); reactivate_fd(sigio_irq_fd, SIGIO_WRITE_IRQ); + return(IRQ_HANDLED); } int write_sigio_irq(int fd) diff -puN arch/um/kernel/sigio_user.c~Main-uml-patch-no-skas arch/um/kernel/sigio_user.c --- uml-linux-2.6.7/arch/um/kernel/sigio_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.540315344 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/sigio_user.c 2004-06-29 21:02:55.733286008 +0200 @@ -7,7 +7,6 @@ #include #include #include -#include #include #include #include @@ -26,7 +25,7 @@ int pty_output_sigio = 0; int pty_close_sigio = 0; /* Used as a flag during SIGIO testing early in boot */ -static int got_sigio = 0; +static volatile int got_sigio = 0; void __init handler(int sig) { @@ -45,7 +44,7 @@ static void openpty_cb(void *arg) info->err = 0; if(openpty(&info->master, &info->slave, NULL, NULL, NULL)) - info->err = errno; + info->err = -errno; } void __init check_one_sigio(void (*proc)(int, int)) @@ -53,11 +52,11 @@ void __init check_one_sigio(void (*proc) struct sigaction old, new; struct termios tt; struct openpty_arg pty = { .master = -1, .slave = -1 }; - int master, slave, flags; + int master, slave, err; initial_thread_cb(openpty_cb, &pty); if(pty.err){ - printk("openpty failed, errno = %d\n", pty.err); + printk("openpty failed, errno = %d\n", -pty.err); return; } @@ -69,23 +68,16 @@ void __init check_one_sigio(void (*proc) return; } + /* XXX These can fail with EINTR */ if(tcgetattr(master, &tt) < 0) panic("check_sigio : tcgetattr failed, errno = %d\n", errno); cfmakeraw(&tt); if(tcsetattr(master, TCSADRAIN, &tt) < 0) panic("check_sigio : tcsetattr failed, errno = %d\n", errno); - if((flags = fcntl(master, F_GETFL)) < 0) - panic("tty_fds : fcntl F_GETFL failed, errno = %d\n", errno); - - if((fcntl(master, F_SETFL, flags | O_NONBLOCK | O_ASYNC) < 0) || - (fcntl(master, F_SETOWN, os_getpid()) < 0)) - panic("check_sigio : fcntl F_SETFL or F_SETOWN failed, " - "errno = %d\n", errno); - - if((fcntl(slave, F_SETFL, flags | O_NONBLOCK) < 0)) - panic("check_sigio : fcntl F_SETFL failed, errno = %d\n", - errno); + err = os_sigio_async(master, slave); + if(err < 0) + panic("tty_fds : sigio_async failed, err = %d\n", -err); if(sigaction(SIGIO, NULL, &old) < 0) panic("check_sigio : sigaction 1 failed, errno = %d\n", errno); @@ -97,8 +89,8 @@ void __init check_one_sigio(void (*proc) got_sigio = 0; (*proc)(master, slave); - close(master); - close(slave); + os_close_file(master); + os_close_file(slave); if(sigaction(SIGIO, &old, NULL) < 0) panic("check_sigio : sigaction 3 failed, errno = %d\n", errno); @@ -112,25 +104,25 @@ static void tty_output(int master, int s printk("Checking that host ptys support output SIGIO..."); memset(buf, 0, sizeof(buf)); - while(write(master, buf, sizeof(buf)) > 0) ; + + while(os_write_file(master, buf, sizeof(buf)) > 0) ; if(errno != EAGAIN) panic("check_sigio : write failed, errno = %d\n", errno); - - while(((n = read(slave, buf, sizeof(buf))) > 0) && !got_sigio) ; + while(((n = os_read_file(slave, buf, sizeof(buf))) > 0) && !got_sigio) ; if(got_sigio){ printk("Yes\n"); pty_output_sigio = 1; } - else if(errno == EAGAIN) printk("No, enabling workaround\n"); - else panic("check_sigio : read failed, errno = %d\n", errno); + else if(n == -EAGAIN) printk("No, enabling workaround\n"); + else panic("check_sigio : read failed, err = %d\n", n); } static void tty_close(int master, int slave) { printk("Checking that host ptys support SIGIO on close..."); - close(slave); + os_close_file(slave); if(got_sigio){ printk("Yes\n"); pty_close_sigio = 1; @@ -140,7 +132,8 @@ static void tty_close(int master, int sl void __init check_sigio(void) { - if(access("/dev/ptmx", R_OK) && access("/dev/ptyp0", R_OK)){ + if((os_access("/dev/ptmx", OS_ACC_R_OK) < 0) && + (os_access("/dev/ptyp0", OS_ACC_R_OK) < 0)){ printk("No pseudo-terminals available - skipping pty SIGIO " "check\n"); return; @@ -201,11 +194,10 @@ static int write_sigio_thread(void *unus p = &fds->poll[i]; if(p->revents == 0) continue; if(p->fd == sigio_private[1]){ - n = read(sigio_private[1], &c, sizeof(c)); + n = os_read_file(sigio_private[1], &c, sizeof(c)); if(n != sizeof(c)) printk("write_sigio_thread : " - "read failed, errno = %d\n", - errno); + "read failed, err = %d\n", -n); tmp = current_poll; current_poll = next_poll; next_poll = tmp; @@ -218,10 +210,10 @@ static int write_sigio_thread(void *unus (fds->used - i) * sizeof(*fds->poll)); } - n = write(respond_fd, &c, sizeof(c)); + n = os_write_file(respond_fd, &c, sizeof(c)); if(n != sizeof(c)) printk("write_sigio_thread : write failed, " - "errno = %d\n", errno); + "err = %d\n", -n); } } } @@ -252,15 +244,15 @@ static void update_thread(void) char c; flags = set_signals(0); - n = write(sigio_private[0], &c, sizeof(c)); + n = os_write_file(sigio_private[0], &c, sizeof(c)); if(n != sizeof(c)){ - printk("update_thread : write failed, errno = %d\n", errno); + printk("update_thread : write failed, err = %d\n", -n); goto fail; } - n = read(sigio_private[0], &c, sizeof(c)); + n = os_read_file(sigio_private[0], &c, sizeof(c)); if(n != sizeof(c)){ - printk("update_thread : read failed, errno = %d\n", errno); + printk("update_thread : read failed, err = %d\n", -n); goto fail; } @@ -271,10 +263,10 @@ static void update_thread(void) if(write_sigio_pid != -1) os_kill_process(write_sigio_pid, 1); write_sigio_pid = -1; - close(sigio_private[0]); - close(sigio_private[1]); - close(write_sigio_fds[0]); - close(write_sigio_fds[1]); + os_close_file(sigio_private[0]); + os_close_file(sigio_private[1]); + os_close_file(write_sigio_fds[0]); + os_close_file(write_sigio_fds[1]); sigio_unlock(); set_signals(flags); } @@ -369,15 +361,15 @@ void write_sigio_workaround(void) goto out; err = os_pipe(write_sigio_fds, 1, 1); - if(err){ + if(err < 0){ printk("write_sigio_workaround - os_pipe 1 failed, " - "errno = %d\n", -err); + "err = %d\n", -err); goto out; } err = os_pipe(sigio_private, 1, 1); - if(err){ + if(err < 0){ printk("write_sigio_workaround - os_pipe 2 failed, " - "errno = %d\n", -err); + "err = %d\n", -err); goto out_close1; } if(setup_initial_poll(sigio_private[1])) @@ -399,11 +391,11 @@ void write_sigio_workaround(void) os_kill_process(write_sigio_pid, 1); write_sigio_pid = -1; out_close2: - close(sigio_private[0]); - close(sigio_private[1]); + os_close_file(sigio_private[0]); + os_close_file(sigio_private[1]); out_close1: - close(write_sigio_fds[0]); - close(write_sigio_fds[1]); + os_close_file(write_sigio_fds[0]); + os_close_file(write_sigio_fds[1]); sigio_unlock(); } @@ -412,10 +404,16 @@ int read_sigio_fd(int fd) int n; char c; - n = read(fd, &c, sizeof(c)); + n = os_read_file(fd, &c, sizeof(c)); if(n != sizeof(c)){ - printk("read_sigio_fd - read failed, errno = %d\n", errno); - return(-errno); + if(n < 0) { + printk("read_sigio_fd - read failed, err = %d\n", -n); + return(n); + } + else { + printk("read_sigio_fd - short read, bytes = %d\n", n); + return(-EIO); + } } return(n); } diff -puN arch/um/kernel/signal_kern.c~Main-uml-patch-no-skas arch/um/kernel/signal_kern.c --- uml-linux-2.6.7/arch/um/kernel/signal_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.541315192 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/signal_kern.c 2004-06-29 21:02:55.733286008 +0200 @@ -36,7 +36,7 @@ static void force_segv(int sig) if(sig == SIGSEGV){ struct k_sigaction *ka; - ka = ¤t->sig->action[SIGSEGV - 1]; + ka = ¤t->sighand->action[SIGSEGV - 1]; ka->sa.sa_handler = SIG_DFL; } force_sig(SIGSEGV, current); @@ -60,10 +60,10 @@ static int handle_signal(struct pt_regs int err, ret; ret = 0; + /* Always make any pending restarted system calls return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; switch(error){ case -ERESTART_RESTARTBLOCK: - current_thread_info()->restart_block.fn = - do_no_restart_syscall; case -ERESTARTNOHAND: ret = -EINTR; break; @@ -142,7 +142,7 @@ static int kern_do_signal(struct pt_regs return(0); /* Whee! Actually deliver the signal. */ - ka = ¤t->sig->action[sig -1 ]; + ka = ¤t->sighand->action[sig -1 ]; err = handle_signal(regs, sig, ka, &info, oldset, error); if(!err) return(1); @@ -201,7 +201,7 @@ int sys_sigsuspend(int history0, int his } } -int sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize) +int sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize) { sigset_t saveset, newset; @@ -227,20 +227,59 @@ int sys_rt_sigsuspend(sigset_t *unewset, } } +int sys_sigaction(int sig, const struct old_sigaction __user *act, + struct old_sigaction __user *oact) +{ + struct k_sigaction new_ka, old_ka; + int ret; + + if (act) { + old_sigset_t mask; + if (verify_area(VERIFY_READ, act, sizeof(*act)) || + __get_user(new_ka.sa.sa_handler, &act->sa_handler) || + __get_user(new_ka.sa.sa_restorer, &act->sa_restorer)) + return -EFAULT; + __get_user(new_ka.sa.sa_flags, &act->sa_flags); + __get_user(mask, &act->sa_mask); + siginitset(&new_ka.sa.sa_mask, mask); + } + + ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); + + if (!ret && oact) { + if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) || + __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || + __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer)) + return -EFAULT; + __put_user(old_ka.sa.sa_flags, &oact->sa_flags); + __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); + } + + return ret; +} + +int sys_sigaltstack(const stack_t *uss, stack_t *uoss) +{ + return(do_sigaltstack(uss, uoss, PT_REGS_SP(¤t->thread.regs))); +} + +extern int userspace_pid[]; + static int copy_sc_from_user(struct pt_regs *to, void *from, struct arch_frame_data *arch) { int ret; ret = CHOOSE_MODE(copy_sc_from_user_tt(UPT_SC(&to->regs), from, arch), - copy_sc_from_user_skas(&to->regs, from)); + copy_sc_from_user_skas(userspace_pid[0], + &to->regs, from)); return(ret); } int sys_sigreturn(struct pt_regs regs) { - void *sc = sp_to_sc(PT_REGS_SP(¤t->thread.regs)); - void *mask = sp_to_mask(PT_REGS_SP(¤t->thread.regs)); + void __user *sc = sp_to_sc(PT_REGS_SP(¤t->thread.regs)); + void __user *mask = sp_to_mask(PT_REGS_SP(¤t->thread.regs)); int sig_size = (_NSIG_WORDS - 1) * sizeof(unsigned long); spin_lock_irq(¤t->sighand->siglock); @@ -257,8 +296,8 @@ int sys_sigreturn(struct pt_regs regs) int sys_rt_sigreturn(struct pt_regs regs) { - struct ucontext *uc = sp_to_uc(PT_REGS_SP(¤t->thread.regs)); - void *fp; + unsigned long sp = PT_REGS_SP(¤t->thread.regs); + struct ucontext __user *uc = sp_to_uc(sp); int sig_size = _NSIG_WORDS * sizeof(unsigned long); spin_lock_irq(¤t->sighand->siglock); @@ -266,7 +305,6 @@ int sys_rt_sigreturn(struct pt_regs regs sigdelsetmask(¤t->blocked, ~_BLOCKABLE); recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); - fp = (void *) (((unsigned long) uc) + sizeof(struct ucontext)); copy_sc_from_user(¤t->thread.regs, &uc->uc_mcontext, &signal_frame_si.common.arch); return(PT_REGS_SYSCALL_RET(¤t->thread.regs)); diff -puN arch/um/kernel/skas/include/mode.h~Main-uml-patch-no-skas arch/um/kernel/skas/include/mode.h --- uml-linux-2.6.7/arch/um/kernel/skas/include/mode.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.542315040 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/include/mode.h 2004-06-29 21:02:55.733286008 +0200 @@ -12,14 +12,16 @@ extern unsigned long exec_fpx_regs[]; extern int have_fpx_regs; extern void user_time_init_skas(void); -extern int copy_sc_from_user_skas(union uml_pt_regs *regs, void *from_ptr); -extern int copy_sc_to_user_skas(void *to_ptr, void *fp, +extern int copy_sc_from_user_skas(int pid, union uml_pt_regs *regs, + void *from_ptr); +extern int copy_sc_to_user_skas(int pid, void *to_ptr, void *fp, union uml_pt_regs *regs, unsigned long fault_addr, int fault_type); extern void sig_handler_common_skas(int sig, void *sc_ptr); extern void halt_skas(void); extern void reboot_skas(void); extern void kill_off_processes_skas(void); +extern int is_skas_winch(int pid, int fd, void *data); #endif diff -puN arch/um/kernel/skas/include/skas.h~Main-uml-patch-no-skas arch/um/kernel/skas/include/skas.h --- uml-linux-2.6.7/arch/um/kernel/skas/include/skas.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.543314888 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/include/skas.h 2004-06-29 21:02:55.733286008 +0200 @@ -8,7 +8,7 @@ #include "sysdep/ptrace.h" -extern int userspace_pid; +extern int userspace_pid[]; extern void switch_threads(void *me, void *next); extern void thread_wait(void *sw, void *fb); @@ -32,7 +32,7 @@ extern int singlestepping_skas(void); extern int new_mm(int from); extern void save_registers(union uml_pt_regs *regs); extern void restore_registers(union uml_pt_regs *regs); -extern void start_userspace(void); +extern void start_userspace(int cpu); extern void init_registers(int pid); #endif diff -puN arch/um/kernel/skas/include/uaccess.h~Main-uml-patch-no-skas arch/um/kernel/skas/include/uaccess.h --- uml-linux-2.6.7/arch/um/kernel/skas/include/uaccess.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.555313064 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/include/uaccess.h 2004-06-29 21:02:55.734285856 +0200 @@ -6,20 +6,12 @@ #ifndef __SKAS_UACCESS_H #define __SKAS_UACCESS_H -#include "linux/string.h" -#include "linux/sched.h" -#include "linux/err.h" -#include "asm/processor.h" -#include "asm/pgtable.h" #include "asm/errno.h" -#include "asm/current.h" -#include "asm/a.out.h" -#include "kern_util.h" #define access_ok_skas(type, addr, size) \ ((segment_eq(get_fs(), KERNEL_DS)) || \ (((unsigned long) (addr) < TASK_SIZE) && \ - ((unsigned long) (addr) + (size) < TASK_SIZE))) + ((unsigned long) (addr) + (size) <= TASK_SIZE))) static inline int verify_area_skas(int type, const void * addr, unsigned long size) @@ -27,197 +19,12 @@ static inline int verify_area_skas(int t return(access_ok_skas(type, addr, size) ? 0 : -EFAULT); } -static inline unsigned long maybe_map(unsigned long virt, int is_write) -{ - pte_t pte; - - void *phys = um_virt_to_phys(current, virt, &pte); - int dummy_code; - - if(IS_ERR(phys) || (is_write && !pte_write(pte))){ - if(handle_page_fault(virt, 0, is_write, 0, &dummy_code)) - return(0); - phys = um_virt_to_phys(current, virt, NULL); - } - return((unsigned long) __va((unsigned long) phys)); -} - -static inline int buffer_op(unsigned long addr, int len, - int (*op)(unsigned long addr, int len, void *arg), - void *arg) -{ - int size = min(PAGE_ALIGN(addr) - addr, (unsigned long) len); - int remain = len, n; - - n = (*op)(addr, size, arg); - if(n != 0) - return(n < 0 ? remain : 0); - - addr += size; - remain -= size; - if(remain == 0) - return(0); - - while(addr < ((addr + remain) & PAGE_MASK)){ - n = (*op)(addr, PAGE_SIZE, arg); - if(n != 0) - return(n < 0 ? remain : 0); - - addr += PAGE_SIZE; - remain -= PAGE_SIZE; - } - if(remain == 0) - return(0); - - n = (*op)(addr, remain, arg); - if(n != 0) - return(n < 0 ? remain : 0); - return(0); -} - -static inline int copy_chunk_from_user(unsigned long from, int len, void *arg) -{ - unsigned long *to_ptr = arg, to = *to_ptr; - - from = maybe_map(from, 0); - if(from == 0) - return(-1); - - memcpy((void *) to, (void *) from, len); - *to_ptr += len; - return(0); -} - -static inline int copy_from_user_skas(void *to, const void *from, int n) -{ - if(segment_eq(get_fs(), KERNEL_DS)){ - memcpy(to, from, n); - return(0); - } - - return(access_ok_skas(VERIFY_READ, from, n) ? - buffer_op((unsigned long) from, n, copy_chunk_from_user, &to) : - n); -} - -static inline int copy_chunk_to_user(unsigned long to, int len, void *arg) -{ - unsigned long *from_ptr = arg, from = *from_ptr; - - to = maybe_map(to, 1); - if(to == 0) - return(-1); - - memcpy((void *) to, (void *) from, len); - *from_ptr += len; - return(0); -} - -static inline int copy_to_user_skas(void *to, const void *from, int n) -{ - if(segment_eq(get_fs(), KERNEL_DS)){ - memcpy(to, from, n); - return(0); - } - - return(access_ok_skas(VERIFY_WRITE, to, n) ? - buffer_op((unsigned long) to, n, copy_chunk_to_user, &from) : - n); -} - -static inline int strncpy_chunk_from_user(unsigned long from, int len, - void *arg) -{ - char **to_ptr = arg, *to = *to_ptr; - int n; - - from = maybe_map(from, 0); - if(from == 0) - return(-1); - - strncpy(to, (void *) from, len); - n = strnlen(to, len); - *to_ptr += n; - - if(n < len) - return(1); - return(0); -} - -static inline int strncpy_from_user_skas(char *dst, const char *src, int count) -{ - int n; - char *ptr = dst; - - if(segment_eq(get_fs(), KERNEL_DS)){ - strncpy(dst, src, count); - return(strnlen(dst, count)); - } - - if(!access_ok_skas(VERIFY_READ, src, 1)) - return(-EFAULT); - - n = buffer_op((unsigned long) src, count, strncpy_chunk_from_user, - &ptr); - if(n != 0) - return(-EFAULT); - return(strnlen(dst, count)); -} - -static inline int clear_chunk(unsigned long addr, int len, void *unused) -{ - addr = maybe_map(addr, 1); - if(addr == 0) - return(-1); - - memset((void *) addr, 0, len); - return(0); -} - -static inline int __clear_user_skas(void *mem, int len) -{ - return(buffer_op((unsigned long) mem, len, clear_chunk, NULL)); -} - -static inline int clear_user_skas(void *mem, int len) -{ - if(segment_eq(get_fs(), KERNEL_DS)){ - memset(mem, 0, len); - return(0); - } - - return(access_ok_skas(VERIFY_WRITE, mem, len) ? - buffer_op((unsigned long) mem, len, clear_chunk, NULL) : len); -} - -static inline int strnlen_chunk(unsigned long str, int len, void *arg) -{ - int *len_ptr = arg, n; - - str = maybe_map(str, 0); - if(str == 0) - return(-1); - - n = strnlen((void *) str, len); - *len_ptr += n; - - if(n < len) - return(1); - return(0); -} - -static inline int strnlen_user_skas(const void *str, int len) -{ - int count = 0, n; - - if(segment_eq(get_fs(), KERNEL_DS)) - return(strnlen(str, len) + 1); - - n = buffer_op((unsigned long) str, len, strnlen_chunk, &count); - if(n == 0) - return(count + 1); - return(-EFAULT); -} +extern int copy_from_user_skas(void *to, const void *from, int n); +extern int copy_to_user_skas(void *to, const void *from, int n); +extern int strncpy_from_user_skas(char *dst, const char *src, int count); +extern int __clear_user_skas(void *mem, int len); +extern int clear_user_skas(void *mem, int len); +extern int strnlen_user_skas(const void *str, int len); #endif diff -puN arch/um/kernel/skas/Makefile~Main-uml-patch-no-skas arch/um/kernel/skas/Makefile --- uml-linux-2.6.7/arch/um/kernel/skas/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.557312760 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/Makefile 2004-06-29 21:02:55.734285856 +0200 @@ -5,20 +5,24 @@ obj-y = exec_kern.o exec_user.o mem.o mem_user.o mmu.o process.o \ process_kern.o syscall_kern.o syscall_user.o time.o tlb.o trap_user.o \ - sys-$(SUBARCH)/ + uaccess.o sys-$(SUBARCH)/ + +host-progs := util/mk_ptregs +clean-files := include/skas_ptregs.h USER_OBJS = $(filter %_user.o,$(obj-y)) process.o time.o USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file)) -include/skas_ptregs.h : util/mk_ptregs - util/mk_ptregs > $@ - -util/mk_ptregs : - $(MAKE) -C util +$(TOPDIR)/arch/um/include/skas_ptregs.h : $(src)/util/mk_ptregs + @echo -n ' Generating $@' + @$< > $@.tmp + @if [ -r $@ ] && cmp -s $@ $@.tmp; then \ + echo ' (unchanged)'; \ + rm -f $@.tmp; \ + else \ + echo ' (updated)'; \ + mv -f $@.tmp $@; \ + fi $(USER_OBJS) : %.o: %.c $(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $< - -clean : - $(MAKE) -C util clean - $(RM) -f include/skas_ptregs.h diff -puN arch/um/kernel/skas/mem_user.c~Main-uml-patch-no-skas arch/um/kernel/skas/mem_user.c --- uml-linux-2.6.7/arch/um/kernel/skas/mem_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.558312608 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/mem_user.c 2004-06-29 21:02:55.734285856 +0200 @@ -7,6 +7,7 @@ #include #include #include "mem_user.h" +#include "mem.h" #include "user.h" #include "os.h" #include "proc_mm.h" @@ -15,12 +16,12 @@ void map(int fd, unsigned long virt, uns int r, int w, int x) { struct proc_mm_op map; - struct mem_region *region; - int prot, n; + __u64 offset; + int prot, n, phys_fd; prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) | (x ? PROT_EXEC : 0); - region = phys_region(phys); + phys_fd = phys_mapping(phys, &offset); map = ((struct proc_mm_op) { .op = MM_MMAP, .u = @@ -30,12 +31,12 @@ void map(int fd, unsigned long virt, uns .prot = prot, .flags = MAP_SHARED | MAP_FIXED, - .fd = region->fd, - .offset = phys_offset(phys) + .fd = phys_fd, + .offset = offset } } } ); n = os_write_file(fd, &map, sizeof(map)); if(n != sizeof(map)) - printk("map : /proc/mm map failed, errno = %d\n", errno); + printk("map : /proc/mm map failed, err = %d\n", -n); } int unmap(int fd, void *addr, int len) @@ -49,8 +50,13 @@ int unmap(int fd, void *addr, int len) { .addr = (unsigned long) addr, .len = len } } } ); n = os_write_file(fd, &unmap, sizeof(unmap)); - if((n != 0) && (n != sizeof(unmap))) - return(-errno); + if(n != sizeof(unmap)) { + if(n < 0) + return(n); + else if(n > 0) + return(-EIO); + } + return(0); } @@ -71,11 +77,15 @@ int protect(int fd, unsigned long addr, .prot = prot } } } ); n = os_write_file(fd, &protect, sizeof(protect)); - if((n != 0) && (n != sizeof(protect))){ + if(n != sizeof(protect)) { + if(n == 0) return(0); + if(must_succeed) - panic("protect failed, errno = %d", errno); - return(-errno); + panic("protect failed, err = %d", -n); + + return(-EIO); } + return(0); } diff -puN arch/um/kernel/skas/mmu.c~Main-uml-patch-no-skas arch/um/kernel/skas/mmu.c --- uml-linux-2.6.7/arch/um/kernel/skas/mmu.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.559312456 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/mmu.c 2004-06-29 21:02:55.735285704 +0200 @@ -22,9 +22,11 @@ int init_new_context_skas(struct task_st else from = -1; mm->context.skas.mm_fd = new_mm(from); - if(mm->context.skas.mm_fd < 0) - panic("init_new_context_skas - new_mm failed, errno = %d\n", - mm->context.skas.mm_fd); + if(mm->context.skas.mm_fd < 0){ + printk("init_new_context_skas - new_mm failed, errno = %d\n", + mm->context.skas.mm_fd); + return(mm->context.skas.mm_fd); + } return(0); } diff -puN arch/um/kernel/skas/process.c~Main-uml-patch-no-skas arch/um/kernel/skas/process.c --- uml-linux-2.6.7/arch/um/kernel/skas/process.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.560312304 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/process.c 2004-06-29 21:02:55.735285704 +0200 @@ -4,6 +4,7 @@ */ #include +#include #include #include #include @@ -24,6 +25,19 @@ #include "os.h" #include "proc_mm.h" #include "skas_ptrace.h" +#include "chan_user.h" +#include "signal_user.h" + +int is_skas_winch(int pid, int fd, void *data) +{ + if(pid != getpid()) + return(0); + + register_winch_irq(-1, fd, -1, data); + return(1); +} + +/* These are set once at boot time and not changed thereafter */ unsigned long exec_regs[FRAME_SIZE]; unsigned long exec_fp_regs[HOST_FP_SIZE]; @@ -48,11 +62,11 @@ static void handle_trap(int pid, union u int err, syscall_nr, status; syscall_nr = PT_SYSCALL_NR(regs->skas.regs); + UPT_SYSCALL_NR(regs) = syscall_nr; if(syscall_nr < 1){ relay_signal(SIGTRAP, regs); return; } - UPT_SYSCALL_NR(regs) = syscall_nr; err = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET, __NR_getpid); if(err < 0) @@ -72,8 +86,6 @@ static void handle_trap(int pid, union u handle_syscall(regs); } -int userspace_pid; - static int userspace_tramp(void *arg) { init_new_thread_signals(0); @@ -83,7 +95,11 @@ static int userspace_tramp(void *arg) return(0); } -void start_userspace(void) +/* Each element set once, and only accessed by a single processor anyway */ +#define NR_CPUS 1 +int userspace_pid[NR_CPUS]; + +void start_userspace(int cpu) { void *stack; unsigned long sp; @@ -114,21 +130,21 @@ void start_userspace(void) if(munmap(stack, PAGE_SIZE) < 0) panic("start_userspace : munmap failed, errno = %d\n", errno); - userspace_pid = pid; + userspace_pid[cpu] = pid; } void userspace(union uml_pt_regs *regs) { - int err, status, op; + int err, status, op, pid = userspace_pid[0]; restore_registers(regs); - err = ptrace(PTRACE_SYSCALL, userspace_pid, 0, 0); + err = ptrace(PTRACE_SYSCALL, pid, 0, 0); if(err) panic("userspace - PTRACE_SYSCALL failed, errno = %d\n", errno); while(1){ - err = waitpid(userspace_pid, &status, WUNTRACED); + err = waitpid(pid, &status, WUNTRACED); if(err < 0) panic("userspace - waitpid failed, errno = %d\n", errno); @@ -139,16 +155,17 @@ void userspace(union uml_pt_regs *regs) if(WIFSTOPPED(status)){ switch(WSTOPSIG(status)){ case SIGSEGV: - handle_segv(userspace_pid); + handle_segv(pid); break; case SIGTRAP: - handle_trap(userspace_pid, regs); + handle_trap(pid, regs); break; case SIGIO: case SIGVTALRM: case SIGILL: case SIGBUS: case SIGFPE: + case SIGWINCH: user_signal(WSTOPSIG(status), regs); break; default: @@ -162,7 +179,7 @@ void userspace(union uml_pt_regs *regs) op = singlestepping_skas() ? PTRACE_SINGLESTEP : PTRACE_SYSCALL; - err = ptrace(op, userspace_pid, 0, 0); + err = ptrace(op, pid, 0, 0); if(err) panic("userspace - PTRACE_SYSCALL failed, " "errno = %d\n", errno); @@ -172,13 +189,25 @@ void userspace(union uml_pt_regs *regs) void new_thread(void *stack, void **switch_buf_ptr, void **fork_buf_ptr, void (*handler)(int)) { + unsigned long flags; jmp_buf switch_buf, fork_buf; *switch_buf_ptr = &switch_buf; *fork_buf_ptr = &fork_buf; - if(setjmp(fork_buf) == 0) + /* Somewhat subtle - siglongjmp restores the signal mask before doing + * the longjmp. This means that when jumping from one stack to another + * when the target stack has interrupts enabled, an interrupt may occur + * on the source stack. This is bad when starting up a process because + * it's not supposed to get timer ticks until it has been scheduled. + * So, we disable interrupts around the sigsetjmp to ensure that + * they can't happen until we get back here where they are safe. + */ + flags = get_signals(); + block_signals(); + if(sigsetjmp(fork_buf, 1) == 0) new_thread_proc(stack, handler); + set_signals(flags); remove_sigstack(); } @@ -189,16 +218,16 @@ void thread_wait(void *sw, void *fb) *switch_buf = &buf; fork_buf = fb; - if(setjmp(buf) == 0) - longjmp(*fork_buf, 1); + if(sigsetjmp(buf, 1) == 0) + siglongjmp(*fork_buf, 1); } -static int move_registers(int int_op, int fp_op, union uml_pt_regs *regs, - unsigned long *fp_regs) +static int move_registers(int pid, int int_op, int fp_op, + union uml_pt_regs *regs, unsigned long *fp_regs) { - if(ptrace(int_op, userspace_pid, 0, regs->skas.regs) < 0) + if(ptrace(int_op, pid, 0, regs->skas.regs) < 0) return(-errno); - if(ptrace(fp_op, userspace_pid, 0, fp_regs) < 0) + if(ptrace(fp_op, pid, 0, fp_regs) < 0) return(-errno); return(0); } @@ -217,10 +246,11 @@ void save_registers(union uml_pt_regs *r fp_regs = regs->skas.fp; } - err = move_registers(PTRACE_GETREGS, fp_op, regs, fp_regs); + err = move_registers(userspace_pid[0], PTRACE_GETREGS, fp_op, regs, + fp_regs); if(err) panic("save_registers - saving registers failed, errno = %d\n", - err); + -err); } void restore_registers(union uml_pt_regs *regs) @@ -237,10 +267,11 @@ void restore_registers(union uml_pt_regs fp_regs = regs->skas.fp; } - err = move_registers(PTRACE_SETREGS, fp_op, regs, fp_regs); + err = move_registers(userspace_pid[0], PTRACE_SETREGS, fp_op, regs, + fp_regs); if(err) panic("restore_registers - saving registers failed, " - "errno = %d\n", err); + "errno = %d\n", -err); } void switch_threads(void *me, void *next) @@ -248,8 +279,8 @@ void switch_threads(void *me, void *next jmp_buf my_buf, **me_ptr = me, *next_buf = next; *me_ptr = &my_buf; - if(setjmp(my_buf) == 0) - longjmp(*next_buf, 1); + if(sigsetjmp(my_buf, 1) == 0) + siglongjmp(*next_buf, 1); } static jmp_buf initial_jmpbuf; @@ -265,14 +296,14 @@ int start_idle_thread(void *stack, void int n; *fork_buf_ptr = &initial_jmpbuf; - n = setjmp(initial_jmpbuf); + n = sigsetjmp(initial_jmpbuf, 1); if(n == 0) new_thread_proc((void *) stack, new_thread_handler); else if(n == 1) remove_sigstack(); else if(n == 2){ (*cb_proc)(cb_arg); - longjmp(*cb_back, 1); + siglongjmp(*cb_back, 1); } else if(n == 3){ kmalloc_ok = 0; @@ -282,7 +313,7 @@ int start_idle_thread(void *stack, void kmalloc_ok = 0; return(1); } - longjmp(**switch_buf, 1); + siglongjmp(**switch_buf, 1); } void remove_sigstack(void) @@ -304,8 +335,8 @@ void initial_thread_cb_skas(void (*proc) cb_back = &here; block_signals(); - if(setjmp(here) == 0) - longjmp(initial_jmpbuf, 2); + if(sigsetjmp(here, 1) == 0) + siglongjmp(initial_jmpbuf, 2); unblock_signals(); cb_proc = NULL; @@ -316,22 +347,23 @@ void initial_thread_cb_skas(void (*proc) void halt_skas(void) { block_signals(); - longjmp(initial_jmpbuf, 3); + siglongjmp(initial_jmpbuf, 3); } void reboot_skas(void) { block_signals(); - longjmp(initial_jmpbuf, 4); + siglongjmp(initial_jmpbuf, 4); } int new_mm(int from) { struct proc_mm_op copy; - int n, fd = os_open_file("/proc/mm", of_write(OPENFLAGS()), 0); + int n, fd = os_open_file("/proc/mm", + of_cloexec(of_write(OPENFLAGS())), 0); if(fd < 0) - return(-errno); + return(fd); if(from != -1){ copy = ((struct proc_mm_op) { .op = MM_COPY_SEGMENTS, @@ -340,8 +372,9 @@ int new_mm(int from) n = os_write_file(fd, ©, sizeof(copy)); if(n != sizeof(copy)) printk("new_mm : /proc/mm copy_segments failed, " - "errno = %d\n", errno); + "err = %d\n", -n); } + return(fd); } @@ -349,7 +382,8 @@ void switch_mm_skas(int mm_fd) { int err; - err = ptrace(PTRACE_SWITCH_MM, userspace_pid, 0, mm_fd); +#warning need cpu pid in switch_mm_skas + err = ptrace(PTRACE_SWITCH_MM, userspace_pid[0], 0, mm_fd); if(err) panic("switch_mm_skas - PTRACE_SWITCH_MM failed, errno = %d\n", errno); @@ -357,7 +391,8 @@ void switch_mm_skas(int mm_fd) void kill_off_processes_skas(void) { - os_kill_process(userspace_pid, 1); +#warning need to loop over userspace_pids in kill_off_processes_skas + os_kill_process(userspace_pid[0], 1); } void init_registers(int pid) diff -puN arch/um/kernel/skas/process_kern.c~Main-uml-patch-no-skas arch/um/kernel/skas/process_kern.c --- uml-linux-2.6.7/arch/um/kernel/skas/process_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.561312152 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/process_kern.c 2004-06-29 21:02:55.736285552 +0200 @@ -61,11 +61,13 @@ void new_thread_handler(int sig) thread_wait(¤t->thread.mode.skas.switch_buf, current->thread.mode.skas.fork_buf); -#ifdef CONFIG_SMP - schedule_tail(NULL); -#endif + if(current->thread.prev_sched != NULL) + schedule_tail(current->thread.prev_sched); current->thread.prev_sched = NULL; + /* The return value is 1 if the kernel thread execs a process, + * 0 if it just exits + */ n = run_kernel_thread(fn, arg, ¤t->thread.exec_buf); if(n == 1) userspace(¤t->thread.regs.regs); @@ -93,11 +95,11 @@ void fork_handler(int sig) current->thread.mode.skas.fork_buf); force_flush_all(); -#ifdef CONFIG_SMP + if(current->thread.prev_sched == NULL) + panic("blech"); + schedule_tail(current->thread.prev_sched); -#endif current->thread.prev_sched = NULL; - unblock_signals(); userspace(¤t->thread.regs.regs); } @@ -136,7 +138,7 @@ int copy_thread_skas(int nr, unsigned lo void init_idle_skas(void) { - cpu_tasks[current->thread_info->cpu].pid = os_getpid(); + cpu_tasks[current_thread->cpu].pid = os_getpid(); default_idle(); } @@ -160,11 +162,11 @@ static int start_kernel_proc(void *unuse int start_uml_skas(void) { - start_userspace(); + start_userspace(0); capture_signal_stack(); + uml_idle_timer(); init_new_thread_signals(1); - idle_timer(); init_task.thread.request.u.thread.proc = start_kernel_proc; init_task.thread.request.u.thread.arg = NULL; @@ -175,12 +177,14 @@ int start_uml_skas(void) int external_pid_skas(struct task_struct *task) { - return(userspace_pid); +#warning Need to look up userspace_pid by cpu + return(userspace_pid[0]); } int thread_pid_skas(struct task_struct *task) { - return(userspace_pid); +#warning Need to look up userspace_pid by cpu + return(userspace_pid[0]); } /* diff -puN arch/um/kernel/skas/syscall_kern.c~Main-uml-patch-no-skas arch/um/kernel/skas/syscall_kern.c --- uml-linux-2.6.7/arch/um/kernel/skas/syscall_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.562312000 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/syscall_kern.c 2004-06-29 21:02:55.736285552 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2002 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ diff -puN arch/um/kernel/skas/syscall_user.c~Main-uml-patch-no-skas arch/um/kernel/skas/syscall_user.c --- uml-linux-2.6.7/arch/um/kernel/skas/syscall_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.563311848 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/syscall_user.c 2004-06-29 21:02:55.736285552 +0200 @@ -22,7 +22,7 @@ void handle_syscall(union uml_pt_regs *r index = record_syscall_start(UPT_SYSCALL_NR(regs)); - syscall_trace(); + syscall_trace(regs, 1); result = execute_syscall(regs); REGS_SET_SYSCALL_RETURN(regs->skas.regs, result); @@ -30,7 +30,7 @@ void handle_syscall(union uml_pt_regs *r (result == -ERESTARTNOINTR)) do_signal(result); - syscall_trace(); + syscall_trace(regs, 0); record_syscall_end(index, result); } diff -puN arch/um/kernel/skas/sys-i386/Makefile~Main-uml-patch-no-skas arch/um/kernel/skas/sys-i386/Makefile --- uml-linux-2.6.7/arch/um/kernel/skas/sys-i386/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.564311696 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/sys-i386/Makefile 2004-06-29 21:02:55.736285552 +0200 @@ -10,5 +10,3 @@ USER_OBJS := $(foreach file,$(USER_OBJS) $(USER_OBJS) : %.o: %.c $(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $< - -clean : diff -puN arch/um/kernel/skas/sys-i386/sigcontext.c~Main-uml-patch-no-skas arch/um/kernel/skas/sys-i386/sigcontext.c --- uml-linux-2.6.7/arch/um/kernel/skas/sys-i386/sigcontext.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.566311392 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/sys-i386/sigcontext.c 2004-06-29 21:02:55.737285400 +0200 @@ -12,10 +12,9 @@ #include "kern_util.h" #include "user.h" #include "sigcontext.h" +#include "mode.h" -extern int userspace_pid; - -int copy_sc_from_user_skas(union uml_pt_regs *regs, void *from_ptr) +int copy_sc_from_user_skas(int pid, union uml_pt_regs *regs, void *from_ptr) { struct sigcontext sc, *from = from_ptr; unsigned long fpregs[FP_FRAME_SIZE]; @@ -41,13 +40,12 @@ int copy_sc_from_user_skas(union uml_pt_ regs->skas.regs[EIP] = sc.eip; regs->skas.regs[CS] = sc.cs; regs->skas.regs[EFL] = sc.eflags; - regs->skas.regs[UESP] = sc.esp_at_signal; regs->skas.regs[SS] = sc.ss; regs->skas.fault_addr = sc.cr2; regs->skas.fault_type = FAULT_WRITE(sc.err); regs->skas.trap_type = sc.trapno; - err = ptrace(PTRACE_SETFPREGS, userspace_pid, 0, fpregs); + err = ptrace(PTRACE_SETFPREGS, pid, 0, fpregs); if(err < 0){ printk("copy_sc_to_user - PTRACE_SETFPREGS failed, " "errno = %d\n", errno); @@ -57,8 +55,9 @@ int copy_sc_from_user_skas(union uml_pt_ return(0); } -int copy_sc_to_user_skas(void *to_ptr, void *fp, union uml_pt_regs *regs, - unsigned long fault_addr, int fault_type) +int copy_sc_to_user_skas(int pid, void *to_ptr, void *fp, + union uml_pt_regs *regs, unsigned long fault_addr, + int fault_type) { struct sigcontext sc, *to = to_ptr; struct _fpstate *to_fp; @@ -86,7 +85,7 @@ int copy_sc_to_user_skas(void *to_ptr, v sc.err = TO_SC_ERR(fault_type); sc.trapno = regs->skas.trap_type; - err = ptrace(PTRACE_GETFPREGS, userspace_pid, 0, fpregs); + err = ptrace(PTRACE_GETFPREGS, pid, 0, fpregs); if(err < 0){ printk("copy_sc_to_user - PTRACE_GETFPREGS failed, " "errno = %d\n", errno); diff -puN arch/um/kernel/skas/trap_user.c~Main-uml-patch-no-skas arch/um/kernel/skas/trap_user.c --- uml-linux-2.6.7/arch/um/kernel/skas/trap_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.567311240 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/trap_user.c 2004-06-29 21:02:55.737285400 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2002 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -35,14 +35,10 @@ void sig_handler_common_skas(int sig, vo errno = save_errno; } -extern int missed_ticks[]; - void user_signal(int sig, union uml_pt_regs *regs) { struct signal_info *info; - if(sig == SIGVTALRM) - missed_ticks[cpu()]++; regs->skas.is_user = 1; regs->skas.fault_addr = 0; regs->skas.fault_type = 0; diff -puN /dev/null arch/um/kernel/skas/uaccess.c --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/uaccess.c 2004-06-29 21:02:55.737285400 +0200 @@ -0,0 +1,219 @@ +/* + * Copyright (C) 2002 - 2003 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + +#include "linux/stddef.h" +#include "linux/kernel.h" +#include "linux/string.h" +#include "linux/fs.h" +#include "linux/highmem.h" +#include "asm/page.h" +#include "asm/pgtable.h" +#include "asm/uaccess.h" +#include "kern_util.h" + +extern void *um_virt_to_phys(struct task_struct *task, unsigned long addr, + pte_t *pte_out); + +static unsigned long maybe_map(unsigned long virt, int is_write) +{ + pte_t pte; + int err; + + void *phys = um_virt_to_phys(current, virt, &pte); + int dummy_code; + + if(IS_ERR(phys) || (is_write && !pte_write(pte))){ + err = handle_page_fault(virt, 0, is_write, 0, &dummy_code); + if(err) + return(0); + phys = um_virt_to_phys(current, virt, NULL); + } + return((unsigned long) phys); +} + +static int do_op(unsigned long addr, int len, int is_write, + int (*op)(unsigned long addr, int len, void *arg), void *arg) +{ + struct page *page; + int n; + + addr = maybe_map(addr, is_write); + if(addr == -1) + return(-1); + + page = phys_to_page(addr); + addr = (unsigned long) kmap(page) + (addr & ~PAGE_MASK); + n = (*op)(addr, len, arg); + kunmap(page); + + return(n); +} + +static int buffer_op(unsigned long addr, int len, int is_write, + int (*op)(unsigned long addr, int len, void *arg), + void *arg) +{ + int size = min(PAGE_ALIGN(addr) - addr, (unsigned long) len); + int remain = len, n; + + n = do_op(addr, size, is_write, op, arg); + if(n != 0) + return(n < 0 ? remain : 0); + + addr += size; + remain -= size; + if(remain == 0) + return(0); + + while(addr < ((addr + remain) & PAGE_MASK)){ + n = do_op(addr, PAGE_SIZE, is_write, op, arg); + if(n != 0) + return(n < 0 ? remain : 0); + + addr += PAGE_SIZE; + remain -= PAGE_SIZE; + } + if(remain == 0) + return(0); + + n = do_op(addr, remain, is_write, op, arg); + if(n != 0) + return(n < 0 ? remain : 0); + return(0); +} + +static int copy_chunk_from_user(unsigned long from, int len, void *arg) +{ + unsigned long *to_ptr = arg, to = *to_ptr; + + memcpy((void *) to, (void *) from, len); + *to_ptr += len; + return(0); +} + +int copy_from_user_skas(void *to, const void *from, int n) +{ + if(segment_eq(get_fs(), KERNEL_DS)){ + memcpy(to, from, n); + return(0); + } + + return(access_ok_skas(VERIFY_READ, from, n) ? + buffer_op((unsigned long) from, n, 0, copy_chunk_from_user, &to): + n); +} + +static int copy_chunk_to_user(unsigned long to, int len, void *arg) +{ + unsigned long *from_ptr = arg, from = *from_ptr; + + memcpy((void *) to, (void *) from, len); + *from_ptr += len; + return(0); +} + +int copy_to_user_skas(void *to, const void *from, int n) +{ + if(segment_eq(get_fs(), KERNEL_DS)){ + memcpy(to, from, n); + return(0); + } + + return(access_ok_skas(VERIFY_WRITE, to, n) ? + buffer_op((unsigned long) to, n, 1, copy_chunk_to_user, &from) : + n); +} + +static int strncpy_chunk_from_user(unsigned long from, int len, void *arg) +{ + char **to_ptr = arg, *to = *to_ptr; + int n; + + strncpy(to, (void *) from, len); + n = strnlen(to, len); + *to_ptr += n; + + if(n < len) + return(1); + return(0); +} + +int strncpy_from_user_skas(char *dst, const char *src, int count) +{ + int n; + char *ptr = dst; + + if(segment_eq(get_fs(), KERNEL_DS)){ + strncpy(dst, src, count); + return(strnlen(dst, count)); + } + + if(!access_ok_skas(VERIFY_READ, src, 1)) + return(-EFAULT); + + n = buffer_op((unsigned long) src, count, 0, strncpy_chunk_from_user, + &ptr); + if(n != 0) + return(-EFAULT); + return(strnlen(dst, count)); +} + +static int clear_chunk(unsigned long addr, int len, void *unused) +{ + memset((void *) addr, 0, len); + return(0); +} + +int __clear_user_skas(void *mem, int len) +{ + return(buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL)); +} + +int clear_user_skas(void *mem, int len) +{ + if(segment_eq(get_fs(), KERNEL_DS)){ + memset(mem, 0, len); + return(0); + } + + return(access_ok_skas(VERIFY_WRITE, mem, len) ? + buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL) : len); +} + +static int strnlen_chunk(unsigned long str, int len, void *arg) +{ + int *len_ptr = arg, n; + + n = strnlen((void *) str, len); + *len_ptr += n; + + if(n < len) + return(1); + return(0); +} + +int strnlen_user_skas(const void *str, int len) +{ + int count = 0, n; + + if(segment_eq(get_fs(), KERNEL_DS)) + return(strnlen(str, len) + 1); + + n = buffer_op((unsigned long) str, len, 0, strnlen_chunk, &count); + if(n == 0) + return(count + 1); + return(-EFAULT); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN arch/um/kernel/skas/util/Makefile~Main-uml-patch-no-skas arch/um/kernel/skas/util/Makefile --- uml-linux-2.6.7/arch/um/kernel/skas/util/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.568311088 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/util/Makefile 2004-06-29 21:02:55.737285400 +0200 @@ -1,10 +1,9 @@ all: mk_ptregs mk_ptregs : mk_ptregs.o - $(CC) -o mk_ptregs mk_ptregs.o + $(HOSTCC) -o mk_ptregs mk_ptregs.o mk_ptregs.o : mk_ptregs.c - $(CC) -c $< + $(HOSTCC) -c $< -clean : - $(RM) -f mk_ptregs *.o *~ +clean-files := mk_ptregs *.o *~ diff -puN arch/um/kernel/skas/util/mk_ptregs.c~Main-uml-patch-no-skas arch/um/kernel/skas/util/mk_ptregs.c --- uml-linux-2.6.7/arch/um/kernel/skas/util/mk_ptregs.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.569310936 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/skas/util/mk_ptregs.c 2004-06-29 21:02:55.738285248 +0200 @@ -1,3 +1,4 @@ +#include #include #include diff -puN arch/um/kernel/smp.c~Main-uml-patch-no-skas arch/um/kernel/smp.c --- uml-linux-2.6.7/arch/um/kernel/smp.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.571310632 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/smp.c 2004-06-29 21:02:55.738285248 +0200 @@ -1,9 +1,15 @@ /* - * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ #include "linux/config.h" +#include "linux/percpu.h" +#include "asm/pgalloc.h" +#include "asm/tlb.h" + +/* For some reason, mmu_gathers are referenced when CONFIG_SMP is off. */ +DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); #ifdef CONFIG_SMP @@ -23,7 +29,7 @@ #include "os.h" /* CPU online map, set by smp_boot_cpus */ -unsigned long cpu_online_map = cpumask_of_cpu(0); +unsigned long cpu_online_map = CPU_MASK_NONE; EXPORT_SYMBOL(cpu_online_map); @@ -55,7 +61,7 @@ struct task_struct *idle_threads[NR_CPUS void smp_send_reschedule(int cpu) { - write(cpu_data[cpu].ipi_pipe[1], "R", 1); + os_write_file(cpu_data[cpu].ipi_pipe[1], "R", 1); num_reschedules_sent++; } @@ -100,35 +106,34 @@ void smp_send_stop(void) printk(KERN_INFO "Stopping all CPUs..."); for(i = 0; i < num_online_cpus(); i++){ - if(i == current->thread_info->cpu) + if(i == current_thread->cpu) continue; - write(cpu_data[i].ipi_pipe[1], "S", 1); + os_write_file(cpu_data[i].ipi_pipe[1], "S", 1); } printk("done\n"); } -static cpumask_t smp_commenced_mask; -static cpumask_t smp_callin_map = CPU_MASK_NONE; +static cpumask_t smp_commenced_mask = CPU_MASK_NONE; +static cpumask_t cpu_callin_map = CPU_MASK_NONE; static int idle_proc(void *cpup) { int cpu = (int) cpup, err; err = os_pipe(cpu_data[cpu].ipi_pipe, 1, 1); - if(err) - panic("CPU#%d failed to create IPI pipe, errno = %d", cpu, - -err); + if(err < 0) + panic("CPU#%d failed to create IPI pipe, err = %d", cpu, -err); activate_ipi(cpu_data[cpu].ipi_pipe[0], current->thread.mode.tt.extern_pid); wmb(); - if (cpu_test_and_set(cpu, &smp_callin_map)) { + if (cpu_test_and_set(cpu, cpu_callin_map)) { printk("huh, CPU#%d already present??\n", cpu); BUG(); } - while (!cpu_isset(cpu, &smp_commenced_mask)) + while (!cpu_isset(cpu, smp_commenced_mask)) cpu_relax(); cpu_set(cpu, cpu_online_map); @@ -143,16 +148,20 @@ static struct task_struct *idle_thread(i current->thread.request.u.thread.proc = idle_proc; current->thread.request.u.thread.arg = (void *) cpu; - new_task = do_fork(CLONE_VM | CLONE_IDLETASK, 0, NULL, 0, NULL, NULL); - if(IS_ERR(new_task)) panic("do_fork failed in idle_thread"); + new_task = copy_process(CLONE_VM | CLONE_IDLETASK, 0, NULL, 0, NULL, + NULL); + if(IS_ERR(new_task)) + panic("copy_process failed in idle_thread, error = %ld", + PTR_ERR(new_task)); cpu_tasks[cpu] = ((struct cpu_task) { .pid = new_task->thread.mode.tt.extern_pid, .task = new_task } ); idle_threads[cpu] = new_task; - CHOOSE_MODE(write(new_task->thread.mode.tt.switch_pipe[1], &c, + CHOOSE_MODE(os_write_file(new_task->thread.mode.tt.switch_pipe[1], &c, sizeof(c)), ({ panic("skas mode doesn't support SMP"); })); + wake_up_forked_process(new_task); return(new_task); } @@ -160,15 +169,17 @@ void smp_prepare_cpus(unsigned int maxcp { struct task_struct *idle; unsigned long waittime; - int err, cpu; + int err, cpu, me = smp_processor_id(); - cpu_set(0, cpu_online_map); - cpu_set(0, smp_callin_map); + cpu_clear(me, cpu_online_map); + cpu_set(me, cpu_online_map); + cpu_set(me, cpu_callin_map); - err = os_pipe(cpu_data[0].ipi_pipe, 1, 1); - if(err) panic("CPU#0 failed to create IPI pipe, errno = %d", -err); + err = os_pipe(cpu_data[me].ipi_pipe, 1, 1); + if(err < 0) + panic("CPU#0 failed to create IPI pipe, errno = %d", -err); - activate_ipi(cpu_data[0].ipi_pipe[0], + activate_ipi(cpu_data[me].ipi_pipe[0], current->thread.mode.tt.extern_pid); for(cpu = 1; cpu < ncpus; cpu++){ @@ -180,10 +191,10 @@ void smp_prepare_cpus(unsigned int maxcp unhash_process(idle); waittime = 200000000; - while (waittime-- && !cpu_isset(cpu, smp_callin_map)) + while (waittime-- && !cpu_isset(cpu, cpu_callin_map)) cpu_relax(); - if (cpu_isset(cpu, smp_callin_map)) + if (cpu_isset(cpu, cpu_callin_map)) printk("done\n"); else printk("failed\n"); } @@ -216,7 +227,7 @@ void IPI_handler(int cpu) int fd; fd = cpu_data[cpu].ipi_pipe[0]; - while (read(fd, &c, 1) == 1) { + while (os_read_file(fd, &c, 1) == 1) { switch (c) { case 'C': smp_call_function_slave(cpu); @@ -276,9 +287,9 @@ int smp_call_function(void (*_func)(void info = _info; for (i=0;ithread_info->cpu) && + if((i != current_thread->cpu) && cpu_isset(i, cpu_online_map)) - write(cpu_data[i].ipi_pipe[1], "C", 1); + os_write_file(cpu_data[i].ipi_pipe[1], "C", 1); while (atomic_read(&scf_started) != cpus) barrier(); diff -puN arch/um/kernel/syscall_kern.c~Main-uml-patch-no-skas arch/um/kernel/syscall_kern.c --- uml-linux-2.6.7/arch/um/kernel/syscall_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.572310480 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/syscall_kern.c 2004-06-29 21:02:55.739285096 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -36,32 +36,34 @@ long um_mount(char * dev_name, char * di long sys_fork(void) { - struct task_struct *p; + long ret; current->thread.forking = 1; - p = do_fork(SIGCHLD, 0, NULL, 0, NULL, NULL); + ret = do_fork(SIGCHLD, 0, NULL, 0, NULL, NULL); current->thread.forking = 0; - return(IS_ERR(p) ? PTR_ERR(p) : p->pid); + return(ret); } -long sys_clone(unsigned long clone_flags, unsigned long newsp) +long sys_clone(unsigned long clone_flags, unsigned long newsp, + int *parent_tid, int *child_tid) { - struct task_struct *p; + long ret; current->thread.forking = 1; - p = do_fork(clone_flags, newsp, NULL, 0, NULL, NULL); + ret = do_fork(clone_flags, newsp, NULL, 0, parent_tid, child_tid); current->thread.forking = 0; - return(IS_ERR(p) ? PTR_ERR(p) : p->pid); + return(ret); } long sys_vfork(void) { - struct task_struct *p; + long ret; current->thread.forking = 1; - p = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, NULL, 0, NULL, NULL); + ret = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, NULL, 0, NULL, + NULL); current->thread.forking = 0; - return(IS_ERR(p) ? PTR_ERR(p) : p->pid); + return(ret); } /* common code for old and new mmaps */ @@ -136,43 +138,12 @@ int sys_pipe(unsigned long * fildes) error = do_pipe(fd); if (!error) { - if (copy_to_user(fildes, fd, 2*sizeof(int))) + if (copy_to_user(fildes, fd, sizeof(fd))) error = -EFAULT; } return error; } -int sys_sigaction(int sig, const struct old_sigaction *act, - struct old_sigaction *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - old_sigset_t mask; - if (verify_area(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer)) - return -EFAULT; - __get_user(new_ka.sa.sa_flags, &act->sa_flags); - __get_user(mask, &act->sa_mask); - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer)) - return -EFAULT; - __put_user(old_ka.sa.sa_flags, &oact->sa_flags); - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); - } - - return ret; -} - /* * sys_ipc() is the de-multiplexer for the SysV IPC calls.. * @@ -254,7 +225,7 @@ int sys_ipc (uint call, int first, int s return sys_shmctl (first, second, (struct shmid_ds *) ptr); default: - return -EINVAL; + return -ENOSYS; } } @@ -303,11 +274,6 @@ int sys_olduname(struct oldold_utsname * return error; } -int sys_sigaltstack(const stack_t *uss, stack_t *uoss) -{ - return(do_sigaltstack(uss, uoss, PT_REGS_SP(¤t->thread.regs))); -} - long execute_syscall(void *r) { return(CHOOSE_MODE_PROC(execute_syscall_tt, execute_syscall_skas, r)); diff -puN arch/um/kernel/sys_call_table.c~Main-uml-patch-no-skas arch/um/kernel/sys_call_table.c --- uml-linux-2.6.7/arch/um/kernel/sys_call_table.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.573310328 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/sys_call_table.c 2004-06-29 21:02:55.740284944 +0200 @@ -5,7 +5,6 @@ #include "linux/config.h" #include "linux/unistd.h" -#include "linux/version.h" #include "linux/sys.h" #include "linux/swap.h" #include "linux/syscalls.h" @@ -14,251 +13,50 @@ #include "sysdep/syscalls.h" #include "kern_util.h" -extern syscall_handler_t sys_restart_syscall; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_exit; +#ifdef CONFIG_NFSD +#define NFSSERVCTL sys_nfsservctl +#else +#define NFSSERVCTL sys_ni_syscall +#endif + +#define LAST_GENERIC_SYSCALL __NR_vserver + +#if LAST_GENERIC_SYSCALL > LAST_ARCH_SYSCALL +#define LAST_SYSCALL LAST_GENERIC_SYSCALL +#else +#define LAST_SYSCALL LAST_ARCH_SYSCALL +#endif + extern syscall_handler_t sys_fork; -extern syscall_handler_t sys_creat; -extern syscall_handler_t sys_link; -extern syscall_handler_t sys_unlink; -extern syscall_handler_t sys_chdir; -extern syscall_handler_t sys_mknod; -extern syscall_handler_t sys_chmod; -extern syscall_handler_t sys_lchown16; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_stat; -extern syscall_handler_t sys_getpid; -extern syscall_handler_t sys_oldumount; -extern syscall_handler_t sys_setuid16; -extern syscall_handler_t sys_getuid16; +extern syscall_handler_t sys_execve; +extern syscall_handler_t um_time; +extern syscall_handler_t um_mount; +extern syscall_handler_t um_stime; extern syscall_handler_t sys_ptrace; -extern syscall_handler_t sys_alarm; -extern syscall_handler_t sys_fstat; -extern syscall_handler_t sys_pause; -extern syscall_handler_t sys_utime; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_access; -extern syscall_handler_t sys_nice; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_sync; -extern syscall_handler_t sys_kill; -extern syscall_handler_t sys_rename; -extern syscall_handler_t sys_mkdir; -extern syscall_handler_t sys_rmdir; extern syscall_handler_t sys_pipe; -extern syscall_handler_t sys_times; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_brk; -extern syscall_handler_t sys_setgid16; -extern syscall_handler_t sys_getgid16; -extern syscall_handler_t sys_signal; -extern syscall_handler_t sys_geteuid16; -extern syscall_handler_t sys_getegid16; -extern syscall_handler_t sys_acct; -extern syscall_handler_t sys_umount; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_ioctl; -extern syscall_handler_t sys_fcntl; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_setpgid; -extern syscall_handler_t sys_ni_syscall; extern syscall_handler_t sys_olduname; -extern syscall_handler_t sys_umask; -extern syscall_handler_t sys_chroot; -extern syscall_handler_t sys_ustat; -extern syscall_handler_t sys_dup2; -extern syscall_handler_t sys_getppid; -extern syscall_handler_t sys_getpgrp; extern syscall_handler_t sys_sigaction; -extern syscall_handler_t sys_sgetmask; -extern syscall_handler_t sys_ssetmask; -extern syscall_handler_t sys_setreuid16; -extern syscall_handler_t sys_setregid16; extern syscall_handler_t sys_sigsuspend; -extern syscall_handler_t sys_sigpending; -extern syscall_handler_t sys_sethostname; -extern syscall_handler_t sys_setrlimit; -extern syscall_handler_t sys_old_getrlimit; -extern syscall_handler_t sys_getrusage; -extern syscall_handler_t sys_gettimeofday; -extern syscall_handler_t sys_settimeofday; -extern syscall_handler_t sys_getgroups16; -extern syscall_handler_t sys_setgroups16; -extern syscall_handler_t sys_symlink; -extern syscall_handler_t sys_lstat; -extern syscall_handler_t sys_readlink; -extern syscall_handler_t sys_swapon; -extern syscall_handler_t sys_uselib; -extern syscall_handler_t sys_reboot; extern syscall_handler_t old_readdir; -extern syscall_handler_t sys_munmap; -extern syscall_handler_t sys_truncate; -extern syscall_handler_t sys_ftruncate; -extern syscall_handler_t sys_fchmod; -extern syscall_handler_t sys_fchown16; -extern syscall_handler_t sys_getpriority; -extern syscall_handler_t sys_setpriority; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_statfs; -extern syscall_handler_t sys_fstatfs; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_socketcall; -extern syscall_handler_t sys_syslog; -extern syscall_handler_t sys_setitimer; -extern syscall_handler_t sys_getitimer; -extern syscall_handler_t sys_newstat; -extern syscall_handler_t sys_newlstat; -extern syscall_handler_t sys_newfstat; extern syscall_handler_t sys_uname; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_vhangup; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_swapoff; -extern syscall_handler_t sys_sysinfo; extern syscall_handler_t sys_ipc; -extern syscall_handler_t sys_fsync; extern syscall_handler_t sys_sigreturn; -extern syscall_handler_t sys_rt_sigreturn; extern syscall_handler_t sys_clone; -extern syscall_handler_t sys_setdomainname; -extern syscall_handler_t sys_newuname; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_adjtimex; -extern syscall_handler_t sys_mprotect; -extern syscall_handler_t sys_sigprocmask; -extern syscall_handler_t sys_init_module; -extern syscall_handler_t sys_delete_module; -extern syscall_handler_t sys_quotactl; -extern syscall_handler_t sys_getpgid; -extern syscall_handler_t sys_fchdir; -extern syscall_handler_t sys_bdflush; -extern syscall_handler_t sys_sysfs; -extern syscall_handler_t sys_personality; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_setfsuid16; -extern syscall_handler_t sys_setfsgid16; -extern syscall_handler_t sys_llseek; -extern syscall_handler_t sys_getdents; -extern syscall_handler_t sys_flock; -extern syscall_handler_t sys_msync; -extern syscall_handler_t sys_readv; -extern syscall_handler_t sys_writev; -extern syscall_handler_t sys_getsid; -extern syscall_handler_t sys_fdatasync; -extern syscall_handler_t sys_mlock; -extern syscall_handler_t sys_munlock; -extern syscall_handler_t sys_mlockall; -extern syscall_handler_t sys_munlockall; -extern syscall_handler_t sys_sched_setparam; -extern syscall_handler_t sys_sched_getparam; -extern syscall_handler_t sys_sched_setscheduler; -extern syscall_handler_t sys_sched_getscheduler; -extern syscall_handler_t sys_sched_get_priority_max; -extern syscall_handler_t sys_sched_get_priority_min; -extern syscall_handler_t sys_sched_rr_get_interval; -extern syscall_handler_t sys_nanosleep; -extern syscall_handler_t sys_mremap; -extern syscall_handler_t sys_setresuid16; -extern syscall_handler_t sys_getresuid16; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_poll; -extern syscall_handler_t sys_nfsservctl; -extern syscall_handler_t sys_setresgid16; -extern syscall_handler_t sys_getresgid16; -extern syscall_handler_t sys_prctl; -extern syscall_handler_t sys_ni_syscall; +extern syscall_handler_t sys_rt_sigreturn; extern syscall_handler_t sys_rt_sigaction; -extern syscall_handler_t sys_rt_sigprocmask; -extern syscall_handler_t sys_rt_sigpending; -extern syscall_handler_t sys_rt_sigtimedwait; -extern syscall_handler_t sys_rt_sigqueueinfo; -extern syscall_handler_t sys_rt_sigsuspend; -extern syscall_handler_t sys_pread64; -extern syscall_handler_t sys_pwrite64; -extern syscall_handler_t sys_chown16; -extern syscall_handler_t sys_getcwd; -extern syscall_handler_t sys_capget; -extern syscall_handler_t sys_capset; extern syscall_handler_t sys_sigaltstack; -extern syscall_handler_t sys_sendfile; -extern syscall_handler_t sys_ni_syscall; -extern syscall_handler_t sys_ni_syscall; extern syscall_handler_t sys_vfork; -extern syscall_handler_t sys_getrlimit; extern syscall_handler_t sys_mmap2; -extern syscall_handler_t sys_truncate64; -extern syscall_handler_t sys_ftruncate64; -extern syscall_handler_t sys_stat64; -extern syscall_handler_t sys_lstat64; -extern syscall_handler_t sys_fstat64; -extern syscall_handler_t sys_lchown; -extern syscall_handler_t sys_getuid; -extern syscall_handler_t sys_getgid; -extern syscall_handler_t sys_geteuid; -extern syscall_handler_t sys_getegid; -extern syscall_handler_t sys_setreuid; -extern syscall_handler_t sys_setregid; -extern syscall_handler_t sys_getgroups; -extern syscall_handler_t sys_setgroups; -extern syscall_handler_t sys_fchown; -extern syscall_handler_t sys_setresuid; -extern syscall_handler_t sys_getresuid; -extern syscall_handler_t sys_setresgid; -extern syscall_handler_t sys_getresgid; -extern syscall_handler_t sys_chown; -extern syscall_handler_t sys_setuid; -extern syscall_handler_t sys_setgid; -extern syscall_handler_t sys_setfsuid; -extern syscall_handler_t sys_setfsgid; -extern syscall_handler_t sys_pivot_root; -extern syscall_handler_t sys_mincore; -extern syscall_handler_t sys_madvise; -extern syscall_handler_t sys_fcntl64; -extern syscall_handler_t sys_getdents64; -extern syscall_handler_t sys_gettid; -extern syscall_handler_t sys_readahead; -extern syscall_handler_t sys_tkill; -extern syscall_handler_t sys_sendfile64; -extern syscall_handler_t sys_futex; -extern syscall_handler_t sys_sched_setaffinity; -extern syscall_handler_t sys_sched_getaffinity; -extern syscall_handler_t sys_io_setup; -extern syscall_handler_t sys_io_destroy; -extern syscall_handler_t sys_io_getevents; -extern syscall_handler_t sys_io_submit; -extern syscall_handler_t sys_io_cancel; -extern syscall_handler_t sys_exit_group; -extern syscall_handler_t sys_lookup_dcookie; -extern syscall_handler_t sys_epoll_create; -extern syscall_handler_t sys_epoll_ctl; -extern syscall_handler_t sys_epoll_wait; -extern syscall_handler_t sys_remap_file_pages; -extern syscall_handler_t sys_set_tid_address; - -#ifdef CONFIG_NFSD -#define NFSSERVCTL sys_nfsservctl -#else -#define NFSSERVCTL sys_ni_syscall -#endif - -extern syscall_handler_t um_mount; -extern syscall_handler_t um_time; -extern syscall_handler_t um_stime; - -#define LAST_GENERIC_SYSCALL __NR_set_tid_address - -#if LAST_GENERIC_SYSCALL > LAST_ARCH_SYSCALL -#define LAST_SYSCALL LAST_GENERIC_SYSCALL -#else -#define LAST_SYSCALL LAST_ARCH_SYSCALL -#endif +extern syscall_handler_t sys_timer_create; +extern syscall_handler_t old_mmap_i386; +extern syscall_handler_t old_select; +extern syscall_handler_t sys_modify_ldt; +extern syscall_handler_t sys_rt_sigsuspend; syscall_handler_t *sys_call_table[] = { - [ __NR_restart_syscall ] = sys_restart_syscall, - [ __NR_exit ] = sys_exit, - [ __NR_fork ] = sys_fork, + [ __NR_restart_syscall ] = (syscall_handler_t *) sys_restart_syscall, + [ __NR_exit ] (syscall_handler_t *) sys_exit, + [ __NR_fork ] (syscall_handler_t *) sys_fork, [ __NR_read ] = (syscall_handler_t *) sys_read, [ __NR_write ] = (syscall_handler_t *) sys_write, @@ -266,229 +64,249 @@ syscall_handler_t *sys_call_table[] = { [ __NR_open ] = (syscall_handler_t *) sys_open, [ __NR_close ] = (syscall_handler_t *) sys_close, [ __NR_waitpid ] = (syscall_handler_t *) sys_waitpid, - [ __NR_creat ] = sys_creat, - [ __NR_link ] = sys_link, - [ __NR_unlink ] = sys_unlink, + [ __NR_creat ] (syscall_handler_t *) sys_creat, + [ __NR_link ] (syscall_handler_t *) sys_link, + [ __NR_unlink ] (syscall_handler_t *) sys_unlink, [ __NR_execve ] = (syscall_handler_t *) sys_execve, /* declared differently in kern_util.h */ - [ __NR_chdir ] = sys_chdir, + [ __NR_chdir ] (syscall_handler_t *) sys_chdir, [ __NR_time ] = um_time, - [ __NR_mknod ] = sys_mknod, - [ __NR_chmod ] = sys_chmod, - [ __NR_lchown ] = sys_lchown16, - [ __NR_break ] = sys_ni_syscall, - [ __NR_oldstat ] = sys_stat, + [ __NR_mknod ] (syscall_handler_t *) sys_mknod, + [ __NR_chmod ] (syscall_handler_t *) sys_chmod, + [ __NR_lchown ] (syscall_handler_t *) sys_lchown16, + [ __NR_break ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_oldstat ] (syscall_handler_t *) sys_stat, [ __NR_lseek ] = (syscall_handler_t *) sys_lseek, - [ __NR_getpid ] = sys_getpid, + [ __NR_getpid ] (syscall_handler_t *) sys_getpid, [ __NR_mount ] = um_mount, - [ __NR_umount ] = sys_oldumount, - [ __NR_setuid ] = sys_setuid16, - [ __NR_getuid ] = sys_getuid16, + [ __NR_umount ] (syscall_handler_t *) sys_oldumount, + [ __NR_setuid ] (syscall_handler_t *) sys_setuid16, + [ __NR_getuid ] (syscall_handler_t *) sys_getuid16, [ __NR_stime ] = um_stime, - [ __NR_ptrace ] = sys_ptrace, - [ __NR_alarm ] = sys_alarm, - [ __NR_oldfstat ] = sys_fstat, - [ __NR_pause ] = sys_pause, - [ __NR_utime ] = sys_utime, - [ __NR_stty ] = sys_ni_syscall, - [ __NR_gtty ] = sys_ni_syscall, - [ __NR_access ] = sys_access, - [ __NR_nice ] = sys_nice, - [ __NR_ftime ] = sys_ni_syscall, - [ __NR_sync ] = sys_sync, - [ __NR_kill ] = sys_kill, - [ __NR_rename ] = sys_rename, - [ __NR_mkdir ] = sys_mkdir, - [ __NR_rmdir ] = sys_rmdir, + [ __NR_ptrace ] (syscall_handler_t *) sys_ptrace, + [ __NR_alarm ] (syscall_handler_t *) sys_alarm, + [ __NR_oldfstat ] (syscall_handler_t *) sys_fstat, + [ __NR_pause ] (syscall_handler_t *) sys_pause, + [ __NR_utime ] (syscall_handler_t *) sys_utime, + [ __NR_stty ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_gtty ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_access ] (syscall_handler_t *) sys_access, + [ __NR_nice ] (syscall_handler_t *) sys_nice, + [ __NR_ftime ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_sync ] (syscall_handler_t *) sys_sync, + [ __NR_kill ] (syscall_handler_t *) sys_kill, + [ __NR_rename ] (syscall_handler_t *) sys_rename, + [ __NR_mkdir ] (syscall_handler_t *) sys_mkdir, + [ __NR_rmdir ] (syscall_handler_t *) sys_rmdir, /* Declared differently in asm/unistd.h */ [ __NR_dup ] = (syscall_handler_t *) sys_dup, - [ __NR_pipe ] = sys_pipe, - [ __NR_times ] = sys_times, - [ __NR_prof ] = sys_ni_syscall, - [ __NR_brk ] = sys_brk, - [ __NR_setgid ] = sys_setgid16, - [ __NR_getgid ] = sys_getgid16, - [ __NR_signal ] = sys_signal, - [ __NR_geteuid ] = sys_geteuid16, - [ __NR_getegid ] = sys_getegid16, - [ __NR_acct ] = sys_acct, - [ __NR_umount2 ] = sys_umount, - [ __NR_lock ] = sys_ni_syscall, - [ __NR_ioctl ] = sys_ioctl, - [ __NR_fcntl ] = sys_fcntl, - [ __NR_mpx ] = sys_ni_syscall, - [ __NR_setpgid ] = sys_setpgid, - [ __NR_ulimit ] = sys_ni_syscall, - [ __NR_oldolduname ] = sys_olduname, - [ __NR_umask ] = sys_umask, - [ __NR_chroot ] = sys_chroot, - [ __NR_ustat ] = sys_ustat, - [ __NR_dup2 ] = sys_dup2, - [ __NR_getppid ] = sys_getppid, - [ __NR_getpgrp ] = sys_getpgrp, + [ __NR_pipe ] (syscall_handler_t *) sys_pipe, + [ __NR_times ] (syscall_handler_t *) sys_times, + [ __NR_prof ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_brk ] (syscall_handler_t *) sys_brk, + [ __NR_setgid ] (syscall_handler_t *) sys_setgid16, + [ __NR_getgid ] (syscall_handler_t *) sys_getgid16, + [ __NR_signal ] (syscall_handler_t *) sys_signal, + [ __NR_geteuid ] (syscall_handler_t *) sys_geteuid16, + [ __NR_getegid ] (syscall_handler_t *) sys_getegid16, + [ __NR_acct ] (syscall_handler_t *) sys_acct, + [ __NR_umount2 ] (syscall_handler_t *) sys_umount, + [ __NR_lock ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_ioctl ] (syscall_handler_t *) sys_ioctl, + [ __NR_fcntl ] (syscall_handler_t *) sys_fcntl, + [ __NR_mpx ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_setpgid ] (syscall_handler_t *) sys_setpgid, + [ __NR_ulimit ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_oldolduname ] (syscall_handler_t *) sys_olduname, + [ __NR_umask ] (syscall_handler_t *) sys_umask, + [ __NR_chroot ] (syscall_handler_t *) sys_chroot, + [ __NR_ustat ] (syscall_handler_t *) sys_ustat, + [ __NR_dup2 ] (syscall_handler_t *) sys_dup2, + [ __NR_getppid ] (syscall_handler_t *) sys_getppid, + [ __NR_getpgrp ] (syscall_handler_t *) sys_getpgrp, [ __NR_setsid ] = (syscall_handler_t *) sys_setsid, - [ __NR_sigaction ] = sys_sigaction, - [ __NR_sgetmask ] = sys_sgetmask, - [ __NR_ssetmask ] = sys_ssetmask, - [ __NR_setreuid ] = sys_setreuid16, - [ __NR_setregid ] = sys_setregid16, - [ __NR_sigsuspend ] = sys_sigsuspend, - [ __NR_sigpending ] = sys_sigpending, - [ __NR_sethostname ] = sys_sethostname, - [ __NR_setrlimit ] = sys_setrlimit, - [ __NR_getrlimit ] = sys_old_getrlimit, - [ __NR_getrusage ] = sys_getrusage, - [ __NR_gettimeofday ] = sys_gettimeofday, - [ __NR_settimeofday ] = sys_settimeofday, - [ __NR_getgroups ] = sys_getgroups16, - [ __NR_setgroups ] = sys_setgroups16, - [ __NR_symlink ] = sys_symlink, - [ __NR_oldlstat ] = sys_lstat, - [ __NR_readlink ] = sys_readlink, - [ __NR_uselib ] = sys_uselib, + [ __NR_sigaction ] (syscall_handler_t *) sys_sigaction, + [ __NR_sgetmask ] (syscall_handler_t *) sys_sgetmask, + [ __NR_ssetmask ] (syscall_handler_t *) sys_ssetmask, + [ __NR_setreuid ] (syscall_handler_t *) sys_setreuid16, + [ __NR_setregid ] (syscall_handler_t *) sys_setregid16, + [ __NR_sigsuspend ] (syscall_handler_t *) sys_sigsuspend, + [ __NR_sigpending ] (syscall_handler_t *) sys_sigpending, + [ __NR_sethostname ] (syscall_handler_t *) sys_sethostname, + [ __NR_setrlimit ] (syscall_handler_t *) sys_setrlimit, + [ __NR_getrlimit ] (syscall_handler_t *) sys_old_getrlimit, + [ __NR_getrusage ] (syscall_handler_t *) sys_getrusage, + [ __NR_gettimeofday ] (syscall_handler_t *) sys_gettimeofday, + [ __NR_settimeofday ] (syscall_handler_t *) sys_settimeofday, + [ __NR_getgroups ] (syscall_handler_t *) sys_getgroups16, + [ __NR_setgroups ] (syscall_handler_t *) sys_setgroups16, + [ __NR_symlink ] (syscall_handler_t *) sys_symlink, + [ __NR_oldlstat ] (syscall_handler_t *) sys_lstat, + [ __NR_readlink ] (syscall_handler_t *) sys_readlink, + [ __NR_uselib ] (syscall_handler_t *) sys_uselib, [ __NR_swapon ] = (syscall_handler_t *) sys_swapon, - [ __NR_reboot ] = sys_reboot, + [ __NR_reboot ] (syscall_handler_t *) sys_reboot, [ __NR_readdir ] = old_readdir, - [ __NR_munmap ] = sys_munmap, - [ __NR_truncate ] = sys_truncate, - [ __NR_ftruncate ] = sys_ftruncate, - [ __NR_fchmod ] = sys_fchmod, - [ __NR_fchown ] = sys_fchown16, - [ __NR_getpriority ] = sys_getpriority, - [ __NR_setpriority ] = sys_setpriority, - [ __NR_profil ] = sys_ni_syscall, - [ __NR_statfs ] = sys_statfs, - [ __NR_fstatfs ] = sys_fstatfs, - [ __NR_ioperm ] = sys_ni_syscall, - [ __NR_socketcall ] = sys_socketcall, - [ __NR_syslog ] = sys_syslog, - [ __NR_setitimer ] = sys_setitimer, - [ __NR_getitimer ] = sys_getitimer, - [ __NR_stat ] = sys_newstat, - [ __NR_lstat ] = sys_newlstat, - [ __NR_fstat ] = sys_newfstat, - [ __NR_olduname ] = sys_uname, - [ __NR_iopl ] = sys_ni_syscall, - [ __NR_vhangup ] = sys_vhangup, - [ __NR_idle ] = sys_ni_syscall, + [ __NR_munmap ] (syscall_handler_t *) sys_munmap, + [ __NR_truncate ] (syscall_handler_t *) sys_truncate, + [ __NR_ftruncate ] (syscall_handler_t *) sys_ftruncate, + [ __NR_fchmod ] (syscall_handler_t *) sys_fchmod, + [ __NR_fchown ] (syscall_handler_t *) sys_fchown16, + [ __NR_getpriority ] (syscall_handler_t *) sys_getpriority, + [ __NR_setpriority ] (syscall_handler_t *) sys_setpriority, + [ __NR_profil ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_statfs ] (syscall_handler_t *) sys_statfs, + [ __NR_fstatfs ] (syscall_handler_t *) sys_fstatfs, + [ __NR_ioperm ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_socketcall ] (syscall_handler_t *) sys_socketcall, + [ __NR_syslog ] (syscall_handler_t *) sys_syslog, + [ __NR_setitimer ] (syscall_handler_t *) sys_setitimer, + [ __NR_getitimer ] (syscall_handler_t *) sys_getitimer, + [ __NR_stat ] (syscall_handler_t *) sys_newstat, + [ __NR_lstat ] (syscall_handler_t *) sys_newlstat, + [ __NR_fstat ] (syscall_handler_t *) sys_newfstat, + [ __NR_olduname ] (syscall_handler_t *) sys_uname, + [ __NR_iopl ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_vhangup ] (syscall_handler_t *) sys_vhangup, + [ __NR_idle ] (syscall_handler_t *) sys_ni_syscall, [ __NR_wait4 ] = (syscall_handler_t *) sys_wait4, [ __NR_swapoff ] = (syscall_handler_t *) sys_swapoff, - [ __NR_sysinfo ] = sys_sysinfo, - [ __NR_ipc ] = sys_ipc, - [ __NR_fsync ] = sys_fsync, - [ __NR_sigreturn ] = sys_sigreturn, - [ __NR_clone ] = sys_clone, - [ __NR_setdomainname ] = sys_setdomainname, - [ __NR_uname ] = sys_newuname, - [ __NR_adjtimex ] = sys_adjtimex, - [ __NR_mprotect ] = sys_mprotect, - [ __NR_sigprocmask ] = sys_sigprocmask, - [ __NR_create_module ] = sys_ni_syscall, - [ __NR_init_module ] = sys_init_module, - [ __NR_delete_module ] = sys_delete_module, - [ __NR_get_kernel_syms ] = sys_ni_syscall, - [ __NR_quotactl ] = sys_quotactl, - [ __NR_getpgid ] = sys_getpgid, - [ __NR_fchdir ] = sys_fchdir, - [ __NR_bdflush ] = sys_bdflush, - [ __NR_sysfs ] = sys_sysfs, - [ __NR_personality ] = sys_personality, - [ __NR_afs_syscall ] = sys_ni_syscall, - [ __NR_setfsuid ] = sys_setfsuid16, - [ __NR_setfsgid ] = sys_setfsgid16, - [ __NR__llseek ] = sys_llseek, - [ __NR_getdents ] = sys_getdents, + [ __NR_sysinfo ] (syscall_handler_t *) sys_sysinfo, + [ __NR_ipc ] (syscall_handler_t *) sys_ipc, + [ __NR_fsync ] (syscall_handler_t *) sys_fsync, + [ __NR_sigreturn ] (syscall_handler_t *) sys_sigreturn, + [ __NR_clone ] (syscall_handler_t *) sys_clone, + [ __NR_setdomainname ] (syscall_handler_t *) sys_setdomainname, + [ __NR_uname ] (syscall_handler_t *) sys_newuname, + [ __NR_adjtimex ] (syscall_handler_t *) sys_adjtimex, + [ __NR_mprotect ] (syscall_handler_t *) sys_mprotect, + [ __NR_sigprocmask ] (syscall_handler_t *) sys_sigprocmask, + [ __NR_create_module ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_init_module ] (syscall_handler_t *) sys_init_module, + [ __NR_delete_module ] (syscall_handler_t *) sys_delete_module, + [ __NR_get_kernel_syms ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_quotactl ] (syscall_handler_t *) sys_quotactl, + [ __NR_getpgid ] (syscall_handler_t *) sys_getpgid, + [ __NR_fchdir ] (syscall_handler_t *) sys_fchdir, + [ __NR_bdflush ] (syscall_handler_t *) sys_bdflush, + [ __NR_sysfs ] (syscall_handler_t *) sys_sysfs, + [ __NR_personality ] (syscall_handler_t *) sys_personality, + [ __NR_afs_syscall ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_setfsuid ] (syscall_handler_t *) sys_setfsuid16, + [ __NR_setfsgid ] (syscall_handler_t *) sys_setfsgid16, + [ __NR__llseek ] (syscall_handler_t *) sys_llseek, + [ __NR_getdents ] (syscall_handler_t *) sys_getdents, [ __NR__newselect ] = (syscall_handler_t *) sys_select, - [ __NR_flock ] = sys_flock, - [ __NR_msync ] = sys_msync, - [ __NR_readv ] = sys_readv, - [ __NR_writev ] = sys_writev, - [ __NR_getsid ] = sys_getsid, - [ __NR_fdatasync ] = sys_fdatasync, + [ __NR_flock ] (syscall_handler_t *) sys_flock, + [ __NR_msync ] (syscall_handler_t *) sys_msync, + [ __NR_readv ] (syscall_handler_t *) sys_readv, + [ __NR_writev ] (syscall_handler_t *) sys_writev, + [ __NR_getsid ] (syscall_handler_t *) sys_getsid, + [ __NR_fdatasync ] (syscall_handler_t *) sys_fdatasync, [ __NR__sysctl ] = (syscall_handler_t *) sys_sysctl, - [ __NR_mlock ] = sys_mlock, - [ __NR_munlock ] = sys_munlock, - [ __NR_mlockall ] = sys_mlockall, - [ __NR_munlockall ] = sys_munlockall, - [ __NR_sched_setparam ] = sys_sched_setparam, - [ __NR_sched_getparam ] = sys_sched_getparam, - [ __NR_sched_setscheduler ] = sys_sched_setscheduler, - [ __NR_sched_getscheduler ] = sys_sched_getscheduler, + [ __NR_mlock ] (syscall_handler_t *) sys_mlock, + [ __NR_munlock ] (syscall_handler_t *) sys_munlock, + [ __NR_mlockall ] (syscall_handler_t *) sys_mlockall, + [ __NR_munlockall ] (syscall_handler_t *) sys_munlockall, + [ __NR_sched_setparam ] (syscall_handler_t *) sys_sched_setparam, + [ __NR_sched_getparam ] (syscall_handler_t *) sys_sched_getparam, + [ __NR_sched_setscheduler ] (syscall_handler_t *) sys_sched_setscheduler, + [ __NR_sched_getscheduler ] (syscall_handler_t *) sys_sched_getscheduler, [ __NR_sched_yield ] = (syscall_handler_t *) yield, - [ __NR_sched_get_priority_max ] = sys_sched_get_priority_max, - [ __NR_sched_get_priority_min ] = sys_sched_get_priority_min, - [ __NR_sched_rr_get_interval ] = sys_sched_rr_get_interval, - [ __NR_nanosleep ] = sys_nanosleep, - [ __NR_mremap ] = sys_mremap, - [ __NR_setresuid ] = sys_setresuid16, - [ __NR_getresuid ] = sys_getresuid16, - [ __NR_vm86 ] = sys_ni_syscall, - [ __NR_query_module ] = sys_ni_syscall, - [ __NR_poll ] = sys_poll, - [ __NR_nfsservctl ] = NFSSERVCTL, - [ __NR_setresgid ] = sys_setresgid16, - [ __NR_getresgid ] = sys_getresgid16, - [ __NR_prctl ] = sys_prctl, - [ __NR_rt_sigreturn ] = sys_rt_sigreturn, - [ __NR_rt_sigaction ] = sys_rt_sigaction, - [ __NR_rt_sigprocmask ] = sys_rt_sigprocmask, - [ __NR_rt_sigpending ] = sys_rt_sigpending, - [ __NR_rt_sigtimedwait ] = sys_rt_sigtimedwait, - [ __NR_rt_sigqueueinfo ] = sys_rt_sigqueueinfo, - [ __NR_rt_sigsuspend ] = sys_rt_sigsuspend, - [ __NR_pread64 ] = sys_pread64, - [ __NR_pwrite64 ] = sys_pwrite64, - [ __NR_chown ] = sys_chown16, - [ __NR_getcwd ] = sys_getcwd, - [ __NR_capget ] = sys_capget, - [ __NR_capset ] = sys_capset, - [ __NR_sigaltstack ] = sys_sigaltstack, - [ __NR_sendfile ] = sys_sendfile, - [ __NR_getpmsg ] = sys_ni_syscall, - [ __NR_putpmsg ] = sys_ni_syscall, - [ __NR_vfork ] = sys_vfork, - [ __NR_ugetrlimit ] = sys_getrlimit, - [ __NR_mmap2 ] = sys_mmap2, - [ __NR_truncate64 ] = sys_truncate64, - [ __NR_ftruncate64 ] = sys_ftruncate64, - [ __NR_stat64 ] = sys_stat64, - [ __NR_lstat64 ] = sys_lstat64, - [ __NR_fstat64 ] = sys_fstat64, - [ __NR_fcntl64 ] = sys_fcntl64, - [ __NR_getdents64 ] = sys_getdents64, - [ __NR_gettid ] = sys_gettid, - [ __NR_readahead ] = sys_readahead, - [ __NR_setxattr ] = sys_ni_syscall, - [ __NR_lsetxattr ] = sys_ni_syscall, - [ __NR_fsetxattr ] = sys_ni_syscall, - [ __NR_getxattr ] = sys_ni_syscall, - [ __NR_lgetxattr ] = sys_ni_syscall, - [ __NR_fgetxattr ] = sys_ni_syscall, - [ __NR_listxattr ] = sys_ni_syscall, - [ __NR_llistxattr ] = sys_ni_syscall, - [ __NR_flistxattr ] = sys_ni_syscall, - [ __NR_removexattr ] = sys_ni_syscall, - [ __NR_lremovexattr ] = sys_ni_syscall, - [ __NR_fremovexattr ] = sys_ni_syscall, - [ __NR_tkill ] = sys_tkill, - [ __NR_sendfile64 ] = sys_sendfile64, - [ __NR_futex ] = sys_futex, - [ __NR_sched_setaffinity ] = sys_sched_setaffinity, - [ __NR_sched_getaffinity ] = sys_sched_getaffinity, - [ __NR_io_setup ] = sys_io_setup, - [ __NR_io_destroy ] = sys_io_destroy, - [ __NR_io_getevents ] = sys_io_getevents, - [ __NR_io_submit ] = sys_io_submit, - [ __NR_io_cancel ] = sys_io_cancel, - [ __NR_exit_group ] = sys_exit_group, - [ __NR_lookup_dcookie ] = sys_lookup_dcookie, - [ __NR_epoll_create ] = sys_epoll_create, - [ __NR_epoll_ctl ] = sys_epoll_ctl, - [ __NR_epoll_wait ] = sys_epoll_wait, - [ __NR_remap_file_pages ] = sys_remap_file_pages, - [ __NR_set_tid_address ] = sys_set_tid_address, + [ __NR_sched_get_priority_max ] (syscall_handler_t *) sys_sched_get_priority_max, + [ __NR_sched_get_priority_min ] (syscall_handler_t *) sys_sched_get_priority_min, + [ __NR_sched_rr_get_interval ] (syscall_handler_t *) sys_sched_rr_get_interval, + [ __NR_nanosleep ] (syscall_handler_t *) sys_nanosleep, + [ __NR_mremap ] (syscall_handler_t *) sys_mremap, + [ __NR_setresuid ] (syscall_handler_t *) sys_setresuid16, + [ __NR_getresuid ] (syscall_handler_t *) sys_getresuid16, + [ __NR_vm86 ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_query_module ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_poll ] (syscall_handler_t *) sys_poll, + [ __NR_nfsservctl ] = (syscall_handler_t *) NFSSERVCTL, + [ __NR_setresgid ] (syscall_handler_t *) sys_setresgid16, + [ __NR_getresgid ] (syscall_handler_t *) sys_getresgid16, + [ __NR_prctl ] (syscall_handler_t *) sys_prctl, + [ __NR_rt_sigreturn ] (syscall_handler_t *) sys_rt_sigreturn, + [ __NR_rt_sigaction ] (syscall_handler_t *) sys_rt_sigaction, + [ __NR_rt_sigprocmask ] (syscall_handler_t *) sys_rt_sigprocmask, + [ __NR_rt_sigpending ] (syscall_handler_t *) sys_rt_sigpending, + [ __NR_rt_sigtimedwait ] (syscall_handler_t *) sys_rt_sigtimedwait, + [ __NR_rt_sigqueueinfo ] (syscall_handler_t *) sys_rt_sigqueueinfo, + [ __NR_rt_sigsuspend ] (syscall_handler_t *) sys_rt_sigsuspend, + [ __NR_pread64 ] (syscall_handler_t *) sys_pread64, + [ __NR_pwrite64 ] (syscall_handler_t *) sys_pwrite64, + [ __NR_chown ] (syscall_handler_t *) sys_chown16, + [ __NR_getcwd ] (syscall_handler_t *) sys_getcwd, + [ __NR_capget ] (syscall_handler_t *) sys_capget, + [ __NR_capset ] (syscall_handler_t *) sys_capset, + [ __NR_sigaltstack ] (syscall_handler_t *) sys_sigaltstack, + [ __NR_sendfile ] (syscall_handler_t *) sys_sendfile, + [ __NR_getpmsg ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_putpmsg ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_vfork ] (syscall_handler_t *) sys_vfork, + [ __NR_ugetrlimit ] (syscall_handler_t *) sys_getrlimit, + [ __NR_mmap2 ] (syscall_handler_t *) sys_mmap2, + [ __NR_truncate64 ] (syscall_handler_t *) sys_truncate64, + [ __NR_ftruncate64 ] (syscall_handler_t *) sys_ftruncate64, + [ __NR_stat64 ] (syscall_handler_t *) sys_stat64, + [ __NR_lstat64 ] (syscall_handler_t *) sys_lstat64, + [ __NR_fstat64 ] (syscall_handler_t *) sys_fstat64, + [ __NR_getdents64 ] (syscall_handler_t *) sys_getdents64, + [ __NR_fcntl64 ] (syscall_handler_t *) sys_fcntl64, + [ 223 ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_gettid ] (syscall_handler_t *) sys_gettid, + [ __NR_readahead ] (syscall_handler_t *) sys_readahead, + [ __NR_setxattr ] (syscall_handler_t *) sys_setxattr, + [ __NR_lsetxattr ] (syscall_handler_t *) sys_lsetxattr, + [ __NR_fsetxattr ] (syscall_handler_t *) sys_fsetxattr, + [ __NR_getxattr ] (syscall_handler_t *) sys_getxattr, + [ __NR_lgetxattr ] (syscall_handler_t *) sys_lgetxattr, + [ __NR_fgetxattr ] (syscall_handler_t *) sys_fgetxattr, + [ __NR_listxattr ] (syscall_handler_t *) sys_listxattr, + [ __NR_llistxattr ] (syscall_handler_t *) sys_llistxattr, + [ __NR_flistxattr ] (syscall_handler_t *) sys_flistxattr, + [ __NR_removexattr ] (syscall_handler_t *) sys_removexattr, + [ __NR_lremovexattr ] (syscall_handler_t *) sys_lremovexattr, + [ __NR_fremovexattr ] (syscall_handler_t *) sys_fremovexattr, + [ __NR_tkill ] (syscall_handler_t *) sys_tkill, + [ __NR_sendfile64 ] (syscall_handler_t *) sys_sendfile64, + [ __NR_futex ] (syscall_handler_t *) sys_futex, + [ __NR_sched_setaffinity ] (syscall_handler_t *) sys_sched_setaffinity, + [ __NR_sched_getaffinity ] (syscall_handler_t *) sys_sched_getaffinity, + [ __NR_set_thread_area ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_get_thread_area ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_io_setup ] (syscall_handler_t *) sys_io_setup, + [ __NR_io_destroy ] (syscall_handler_t *) sys_io_destroy, + [ __NR_io_getevents ] (syscall_handler_t *) sys_io_getevents, + [ __NR_io_submit ] (syscall_handler_t *) sys_io_submit, + [ __NR_io_cancel ] (syscall_handler_t *) sys_io_cancel, + [ __NR_fadvise64 ] (syscall_handler_t *) sys_fadvise64, + [ 251 ] (syscall_handler_t *) sys_ni_syscall, + [ __NR_exit_group ] (syscall_handler_t *) sys_exit_group, + [ __NR_lookup_dcookie ] (syscall_handler_t *) sys_lookup_dcookie, + [ __NR_epoll_create ] (syscall_handler_t *) sys_epoll_create, + [ __NR_epoll_ctl ] (syscall_handler_t *) sys_epoll_ctl, + [ __NR_epoll_wait ] (syscall_handler_t *) sys_epoll_wait, + [ __NR_remap_file_pages ] (syscall_handler_t *) sys_remap_file_pages, + [ __NR_set_tid_address ] (syscall_handler_t *) sys_set_tid_address, + [ __NR_timer_create ] (syscall_handler_t *) sys_timer_create, + [ __NR_timer_settime ] (syscall_handler_t *) sys_timer_settime, + [ __NR_timer_gettime ] (syscall_handler_t *) sys_timer_gettime, + [ __NR_timer_getoverrun ] (syscall_handler_t *) sys_timer_getoverrun, + [ __NR_timer_delete ] (syscall_handler_t *) sys_timer_delete, + [ __NR_clock_settime ] (syscall_handler_t *) sys_clock_settime, + [ __NR_clock_gettime ] (syscall_handler_t *) sys_clock_gettime, + [ __NR_clock_getres ] (syscall_handler_t *) sys_clock_getres, + [ __NR_clock_nanosleep ] (syscall_handler_t *) sys_clock_nanosleep, + [ __NR_statfs64 ] (syscall_handler_t *) sys_statfs64, + [ __NR_fstatfs64 ] (syscall_handler_t *) sys_fstatfs64, + [ __NR_tgkill ] (syscall_handler_t *) sys_tgkill, + [ __NR_utimes ] (syscall_handler_t *) sys_utimes, + [ __NR_fadvise64_64 ] (syscall_handler_t *) sys_fadvise64_64, + [ __NR_vserver ] (syscall_handler_t *) sys_ni_syscall, ARCH_SYSCALLS [ LAST_SYSCALL + 1 ... NR_syscalls ] = diff -puN arch/um/kernel/sysrq.c~Main-uml-patch-no-skas arch/um/kernel/sysrq.c --- uml-linux-2.6.7/arch/um/kernel/sysrq.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.574310176 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/sysrq.c 2004-06-29 21:02:55.740284944 +0200 @@ -44,6 +44,11 @@ void dump_stack(void) } EXPORT_SYMBOL(dump_stack); +void show_stack(struct task_struct *task, unsigned long *sp) +{ + show_trace(sp); +} + /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff -puN arch/um/kernel/tempfile.c~Main-uml-patch-no-skas arch/um/kernel/tempfile.c --- uml-linux-2.6.7/arch/um/kernel/tempfile.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.575310024 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tempfile.c 2004-06-29 21:02:55.740284944 +0200 @@ -28,6 +28,7 @@ static void __init find_tempdir(void) } if((dir == NULL) || (*dir == '\0')) dir = "/tmp"; + tempdir = malloc(strlen(dir) + 2); if(tempdir == NULL){ fprintf(stderr, "Failed to malloc tempdir, " @@ -49,7 +50,8 @@ int make_tempfile(const char *template, else *tempname = 0; strcat(tempname, template); - if((fd = mkstemp(tempname)) < 0){ + fd = mkstemp(tempname); + if(fd < 0){ fprintf(stderr, "open - cannot create %s: %s\n", tempname, strerror(errno)); return -1; @@ -59,7 +61,8 @@ int make_tempfile(const char *template, return -1; } if(out_tempname){ - if((*out_tempname = strdup(tempname)) == NULL){ + *out_tempname = strdup(tempname); + if(*out_tempname == NULL){ perror("strdup"); return -1; } diff -puN arch/um/kernel/time.c~Main-uml-patch-no-skas arch/um/kernel/time.c --- uml-linux-2.6.7/arch/um/kernel/time.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.576309872 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/time.c 2004-06-29 21:02:55.741284792 +0200 @@ -4,24 +4,33 @@ */ #include +#include #include #include #include #include #include -#include "linux/module.h" #include "user_util.h" #include "kern_util.h" #include "user.h" #include "process.h" #include "signal_user.h" #include "time_user.h" +#include "kern_constants.h" + +/* XXX This really needs to be declared and initialized in a kernel file since + * it's in + */ +extern struct timespec wall_to_monotonic; extern struct timeval xtime; +struct timeval local_offset = { 0, 0 }; + void timer(void) { gettimeofday(&xtime, NULL); + timeradd(&xtime, &local_offset, &xtime); } void set_interval(int timer_type) @@ -66,7 +75,7 @@ void switch_timers(int to_real) errno); } -void idle_timer(void) +void uml_idle_timer(void) { if(signal(SIGVTALRM, SIG_IGN) == SIG_ERR) panic("Couldn't unset SIGVTALRM handler"); @@ -76,14 +85,60 @@ void idle_timer(void) set_interval(ITIMER_REAL); } +static unsigned long long get_host_hz(void) +{ + char mhzline[16], *end; + unsigned long long mhz; + int ret, mult, rest, len; + + ret = cpu_feature("cpu MHz", mhzline, + sizeof(mhzline) / sizeof(mhzline[0])); + if(!ret) + panic ("Could not get host MHZ"); + + mhz = strtoul(mhzline, &end, 10); + + /* This business is to parse a floating point number without using + * floating types. + */ + + rest = 0; + mult = 0; + if(*end == '.'){ + end++; + len = strlen(end); + if(len < 6) + mult = 6 - len; + else if(len > 6) + end[6] = '\0'; + rest = strtoul(end, NULL, 10); + while(mult-- > 0) + rest *= 10; + } + + return(1000000 * mhz + rest); +} + +unsigned long long host_hz = 0; + +extern int do_posix_clock_monotonic_gettime(struct timespec *tp); + void time_init(void) { + struct timespec now; + + host_hz = get_host_hz(); if(signal(SIGVTALRM, boot_timer_handler) == SIG_ERR) panic("Couldn't set SIGVTALRM handler"); set_interval(ITIMER_VIRTUAL); + + do_posix_clock_monotonic_gettime(&now); + wall_to_monotonic.tv_sec = -now.tv_sec; + wall_to_monotonic.tv_nsec = -now.tv_nsec; } -struct timeval local_offset = { 0, 0 }; +/* Declared in linux/time.h, which can't be included here */ +extern void clock_was_set(void); void do_gettimeofday(struct timeval *tv) { @@ -96,15 +151,13 @@ void do_gettimeofday(struct timeval *tv) clock_was_set(); } -EXPORT_SYMBOL(do_gettimeofday); - int do_settimeofday(struct timespec *tv) { struct timeval now; unsigned long flags; struct timeval tv_in; - if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC) + if ((unsigned long) tv->tv_nsec >= UM_NSEC_PER_SEC) return -EINVAL; tv_in.tv_sec = tv->tv_sec; @@ -114,9 +167,9 @@ int do_settimeofday(struct timespec *tv) gettimeofday(&now, NULL); timersub(&tv_in, &now, &local_offset); time_unlock(flags); -} -EXPORT_SYMBOL(do_settimeofday); + return(0); +} void idle_sleep(int secs) { diff -puN arch/um/kernel/time_kern.c~Main-uml-patch-no-skas arch/um/kernel/time_kern.c --- uml-linux-2.6.7/arch/um/kernel/time_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.577309720 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/time_kern.c 2004-06-29 21:02:55.741284792 +0200 @@ -30,22 +30,58 @@ int hz(void) return(HZ); } +/* + * Scheduler clock - returns current time in nanosec units. + */ +unsigned long long sched_clock(void) +{ + return (unsigned long long)jiffies_64 * (1000000000 / HZ); +} + /* Changed at early boot */ int timer_irq_inited = 0; -/* missed_ticks will be modified after kernel memory has been - * write-protected, so this puts it in a section which will be left - * write-enabled. - */ -int __attribute__ ((__section__ (".unprotected"))) missed_ticks[NR_CPUS]; +static int first_tick; +static unsigned long long prev_tsc; +static long long delta; /* Deviation per interval */ + +extern unsigned long long host_hz; void timer_irq(union uml_pt_regs *regs) { - int cpu = current->thread_info->cpu, ticks = missed_ticks[cpu]; + unsigned long long ticks = 0; + + if(!timer_irq_inited){ + /* This is to ensure that ticks don't pile up when + * the timer handler is suspended */ + first_tick = 0; + return; + } - if(!timer_irq_inited) return; - missed_ticks[cpu] = 0; - while(ticks--) do_IRQ(TIMER_IRQ, regs); + if(first_tick){ +#if defined(CONFIG_UML_REAL_TIME_CLOCK) + unsigned long long tsc; + /* We've had 1 tick */ + tsc = time_stamp(); + + delta += tsc - prev_tsc; + prev_tsc = tsc; + + ticks += (delta * HZ) / host_hz; + delta -= (ticks * host_hz) / HZ; +#else + ticks = 1; +#endif + } + else { + prev_tsc = time_stamp(); + first_tick = 1; + } + + while(ticks > 0){ + do_IRQ(TIMER_IRQ, regs); + ticks--; + } } void boot_timer_handler(int sig) @@ -58,12 +94,15 @@ void boot_timer_handler(int sig) do_timer(®s); } -void um_timer(int irq, void *dev, struct pt_regs *regs) +irqreturn_t um_timer(int irq, void *dev, struct pt_regs *regs) { + unsigned long flags; + do_timer(regs); - write_seqlock(&xtime_lock); + write_seqlock_irqsave(&xtime_lock, flags); timer(); - write_sequnlock(&xtime_lock); + write_sequnlock_irqrestore(&xtime_lock, flags); + return(IRQ_HANDLED); } long um_time(int * tloc) @@ -81,12 +120,12 @@ long um_time(int * tloc) long um_stime(int * tptr) { int value; - struct timeval new; + struct timespec new; if (get_user(value, tptr)) return -EFAULT; new.tv_sec = value; - new.tv_usec = 0; + new.tv_nsec = 0; do_settimeofday(&new); return 0; } @@ -125,9 +164,11 @@ void __const_udelay(um_udelay_t usecs) void timer_handler(int sig, union uml_pt_regs *regs) { #ifdef CONFIG_SMP + local_irq_disable(); update_process_times(user_context(UPT_SP(regs))); + local_irq_enable(); #endif - if(current->thread_info->cpu == 0) + if(current_thread->cpu == 0) timer_irq(regs); } @@ -136,6 +177,7 @@ static spinlock_t timer_spinlock = SPIN_ unsigned long time_lock(void) { unsigned long flags; + spin_lock_irqsave(&timer_spinlock, flags); return(flags); } @@ -150,8 +192,8 @@ int __init timer_init(void) int err; CHOOSE_MODE(user_time_init_tt(), user_time_init_skas()); - if((err = request_irq(TIMER_IRQ, um_timer, SA_INTERRUPT, "timer", - NULL)) != 0) + err = request_irq(TIMER_IRQ, um_timer, SA_INTERRUPT, "timer", NULL); + if(err != 0) printk(KERN_ERR "timer_init : request_irq failed - " "errno = %d\n", -err); timer_irq_inited = 1; @@ -160,7 +202,6 @@ int __init timer_init(void) __initcall(timer_init); - /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff -puN arch/um/kernel/trap_kern.c~Main-uml-patch-no-skas arch/um/kernel/trap_kern.c --- uml-linux-2.6.7/arch/um/kernel/trap_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.590307744 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/trap_kern.c 2004-06-29 21:02:55.741284792 +0200 @@ -16,12 +16,15 @@ #include "asm/tlbflush.h" #include "asm/a.out.h" #include "asm/current.h" +#include "asm/irq.h" #include "user_util.h" #include "kern_util.h" #include "kern.h" #include "chan_kern.h" #include "mconsole_kern.h" #include "2_5compat.h" +#include "mem.h" +#include "mem_kern.h" int handle_page_fault(unsigned long address, unsigned long ip, int is_write, int is_user, int *code_out) @@ -51,12 +54,12 @@ int handle_page_fault(unsigned long addr if(is_write && !(vma->vm_flags & VM_WRITE)) goto out; page = address & PAGE_MASK; - if(page == (unsigned long) current->thread_info + PAGE_SIZE) + if(page == (unsigned long) current_thread + PAGE_SIZE) panic("Kernel stack overflow"); pgd = pgd_offset(mm, page); pmd = pmd_offset(pgd, page); - survive: do { + survive: switch (handle_mm_fault(mm, vma, address, is_write)){ case VM_FAULT_MINOR: current->min_flt++; @@ -71,14 +74,20 @@ int handle_page_fault(unsigned long addr err = -ENOMEM; goto out_of_memory; default: - BUG(); + if (current->pid == 1) { + up_read(&mm->mmap_sem); + yield(); + down_read(&mm->mmap_sem); + goto survive; + } + goto out; } pte = pte_offset_kernel(pmd, page); } while(!pte_present(*pte)); + err = 0; *pte = pte_mkyoung(*pte); if(pte_write(*pte)) *pte = pte_mkdirty(*pte); flush_tlb_page(vma, page); - err = 0; out: up_read(&mm->mmap_sem); return(err); @@ -98,6 +107,33 @@ out_of_memory: goto out; } +LIST_HEAD(physmem_remappers); + +void register_remapper(struct remapper *info) +{ + list_add(&info->list, &physmem_remappers); +} + +static int check_remapped_addr(unsigned long address, int is_write) +{ + struct remapper *remapper; + struct list_head *ele; + __u64 offset; + int fd; + + fd = phys_mapping(__pa(address), &offset); + if(fd == -1) + return(0); + + list_for_each(ele, &physmem_remappers){ + remapper = list_entry(ele, struct remapper, list); + if((*remapper->proc)(fd, address, is_write, offset)) + return(1); + } + + return(0); +} + unsigned long segv(unsigned long address, unsigned long ip, int is_write, int is_user, void *sc) { @@ -109,7 +145,9 @@ unsigned long segv(unsigned long address flush_tlb_kernel_vm(); return(0); } - if(current->mm == NULL) + else if(check_remapped_addr(address & PAGE_MASK, is_write)) + return(0); + else if(current->mm == NULL) panic("Segfault with no mm"); err = handle_page_fault(address, ip, is_write, is_user, &si.si_code); @@ -120,9 +158,8 @@ unsigned long segv(unsigned long address current->thread.fault_addr = (void *) address; do_longjmp(catcher, 1); } - else if(current->thread.fault_addr != NULL){ + else if(current->thread.fault_addr != NULL) panic("fault_addr set but no fault catcher"); - } else if(arch_fixup(ip, sc)) return(0); @@ -155,8 +192,6 @@ void bad_segv(unsigned long address, uns { struct siginfo si; - printk(KERN_ERR "Unfixable SEGV in '%s' (pid %d) at 0x%lx " - "(ip 0x%lx)\n", current->comm, current->pid, address, ip); si.si_signo = SIGSEGV; si.si_code = SEGV_ACCERR; si.si_addr = (void *) address; @@ -180,6 +215,11 @@ void bus_handler(int sig, union uml_pt_r else relay_signal(sig, regs); } +void winch(int sig, union uml_pt_regs *regs) +{ + do_IRQ(WINCH_IRQ, regs); +} + void trap_init(void) { } diff -puN arch/um/kernel/trap_user.c~Main-uml-patch-no-skas arch/um/kernel/trap_user.c --- uml-linux-2.6.7/arch/um/kernel/trap_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.591307592 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/trap_user.c 2004-06-29 21:02:55.742284640 +0200 @@ -5,11 +5,9 @@ #include #include -#include #include #include #include -#include #include #include #include @@ -82,6 +80,8 @@ struct signal_info sig_info[] = { .is_irq = 0 }, [ SIGILL ] { .handler = relay_signal, .is_irq = 0 }, + [ SIGWINCH ] { .handler = winch, + .is_irq = 1 }, [ SIGBUS ] { .handler = bus_handler, .is_irq = 0 }, [ SIGSEGV] { .handler = segv_handler, @@ -102,12 +102,11 @@ void sig_handler(int sig, struct sigcont sig, &sc); } -extern int timer_irq_inited, missed_ticks[]; +extern int timer_irq_inited; void alarm_handler(int sig, struct sigcontext sc) { if(!timer_irq_inited) return; - missed_ticks[cpu()]++; if(sig == SIGALRM) switch_timers(0); @@ -123,7 +122,7 @@ void do_longjmp(void *b, int val) { jmp_buf *buf = b; - longjmp(*buf, val); + siglongjmp(*buf, val); } /* diff -puN arch/um/kernel/tt/exec_kern.c~Main-uml-patch-no-skas arch/um/kernel/tt/exec_kern.c --- uml-linux-2.6.7/arch/um/kernel/tt/exec_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.592307440 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/exec_kern.c 2004-06-29 21:02:55.742284640 +0200 @@ -17,6 +17,7 @@ #include "mem_user.h" #include "os.h" #include "tlb.h" +#include "mode.h" static int exec_tramp(void *sig_stack) { @@ -47,17 +48,17 @@ void flush_thread_tt(void) do_exit(SIGKILL); } - if(current->thread_info->cpu == 0) + if(current_thread->cpu == 0) forward_interrupts(new_pid); current->thread.request.op = OP_EXEC; current->thread.request.u.exec.pid = new_pid; - unprotect_stack((unsigned long) current->thread_info); + unprotect_stack((unsigned long) current_thread); os_usr1_process(os_getpid()); enable_timer(); free_page(stack); protect_memory(uml_reserved, high_physmem - uml_reserved, 1, 1, 0, 1); - task_protections((unsigned long) current->thread_info); + task_protections((unsigned long) current_thread); force_flush_all(); unblock_signals(); } diff -puN arch/um/kernel/tt/include/mode.h~Main-uml-patch-no-skas arch/um/kernel/tt/include/mode.h --- uml-linux-2.6.7/arch/um/kernel/tt/include/mode.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.593307288 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/include/mode.h 2004-06-29 21:02:55.742284640 +0200 @@ -8,6 +8,8 @@ #include "sysdep/ptrace.h" +enum { OP_NONE, OP_EXEC, OP_FORK, OP_TRACE_ON, OP_REBOOT, OP_HALT, OP_CB }; + extern int tracing_pid; extern int tracer(int (*init_proc)(void *), void *sp); diff -puN arch/um/kernel/tt/include/uaccess.h~Main-uml-patch-no-skas arch/um/kernel/tt/include/uaccess.h --- uml-linux-2.6.7/arch/um/kernel/tt/include/uaccess.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.594307136 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/include/uaccess.h 2004-06-29 21:02:55.743284488 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -43,65 +43,19 @@ extern unsigned long get_fault_addr(void extern int __do_copy_from_user(void *to, const void *from, int n, void **fault_addr, void **fault_catcher); - -static inline int copy_from_user_tt(void *to, const void *from, int n) -{ - return(access_ok_tt(VERIFY_READ, from, n) ? - __do_copy_from_user(to, from, n, - ¤t->thread.fault_addr, - ¤t->thread.fault_catcher) : n); -} - -static inline int copy_to_user_tt(void *to, const void *from, int n) -{ - return(access_ok_tt(VERIFY_WRITE, to, n) ? - __do_copy_to_user(to, from, n, - ¤t->thread.fault_addr, - ¤t->thread.fault_catcher) : n); -} - extern int __do_strncpy_from_user(char *dst, const char *src, size_t n, void **fault_addr, void **fault_catcher); - -static inline int strncpy_from_user_tt(char *dst, const char *src, int count) -{ - int n; - - if(!access_ok_tt(VERIFY_READ, src, 1)) return(-EFAULT); - n = __do_strncpy_from_user(dst, src, count, - ¤t->thread.fault_addr, - ¤t->thread.fault_catcher); - if(n < 0) return(-EFAULT); - return(n); -} - extern int __do_clear_user(void *mem, size_t len, void **fault_addr, void **fault_catcher); - -static inline int __clear_user_tt(void *mem, int len) -{ - return(__do_clear_user(mem, len, - ¤t->thread.fault_addr, - ¤t->thread.fault_catcher)); -} - -static inline int clear_user_tt(void *mem, int len) -{ - return(access_ok_tt(VERIFY_WRITE, mem, len) ? - __do_clear_user(mem, len, - ¤t->thread.fault_addr, - ¤t->thread.fault_catcher) : len); -} - extern int __do_strnlen_user(const char *str, unsigned long n, void **fault_addr, void **fault_catcher); -static inline int strnlen_user_tt(const void *str, int len) -{ - return(__do_strnlen_user(str, len, - ¤t->thread.fault_addr, - ¤t->thread.fault_catcher)); -} +extern int copy_from_user_tt(void *to, const void *from, int n); +extern int copy_to_user_tt(void *to, const void *from, int n); +extern int strncpy_from_user_tt(char *dst, const char *src, int count); +extern int __clear_user_tt(void *mem, int len); +extern int clear_user_tt(void *mem, int len); +extern int strnlen_user_tt(const void *str, int len); #endif diff -puN arch/um/kernel/tt/Makefile~Main-uml-patch-no-skas arch/um/kernel/tt/Makefile --- uml-linux-2.6.7/arch/um/kernel/tt/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.595306984 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/Makefile 2004-06-29 21:02:55.743284488 +0200 @@ -1,5 +1,5 @@ # -# Copyright (C) 2002 Jeff Dike (jdike@karaya.com) +# Copyright (C) 2002 - 2003 Jeff Dike (jdike@addtoit.com) # Licensed under the GPL # @@ -7,7 +7,7 @@ extra-y := unmap_fin.o obj-y = exec_kern.o exec_user.o gdb.o ksyms.o mem.o mem_user.o process_kern.o \ syscall_kern.o syscall_user.o time.o tlb.o tracer.o trap_user.o \ - uaccess_user.o sys-$(SUBARCH)/ + uaccess.o uaccess_user.o sys-$(SUBARCH)/ obj-$(CONFIG_PT_PROXY) += gdb_kern.o ptproxy/ @@ -27,5 +27,3 @@ $(obj)/unmap.o: $(src)/unmap.c $(obj)/unmap_fin.o : $(src)/unmap.o ld -r -o $@ $< -lc -L/usr/lib - -clean : diff -puN arch/um/kernel/tt/mem_user.c~Main-uml-patch-no-skas arch/um/kernel/tt/mem_user.c --- uml-linux-2.6.7/arch/um/kernel/tt/mem_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.597306680 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/mem_user.c 2004-06-29 21:02:55.743284488 +0200 @@ -25,14 +25,13 @@ void remap_data(void *segment_start, voi size = (unsigned long) segment_end - (unsigned long) segment_start; data = create_mem_file(size); - if((addr = mmap(NULL, size, PROT_WRITE | PROT_READ, - MAP_SHARED, data, 0)) == MAP_FAILED){ + addr = mmap(NULL, size, PROT_WRITE | PROT_READ, MAP_SHARED, data, 0); + if(addr == MAP_FAILED){ perror("mapping new data segment"); exit(1); } memcpy(addr, segment_start, size); - if(switcheroo(data, prot, addr, segment_start, - size) < 0){ + if(switcheroo(data, prot, addr, segment_start, size) < 0){ printf("switcheroo failed\n"); exit(1); } diff -puN arch/um/kernel/tt/process_kern.c~Main-uml-patch-no-skas arch/um/kernel/tt/process_kern.c --- uml-linux-2.6.7/arch/um/kernel/tt/process_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.598306528 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/process_kern.c 2004-06-29 21:02:55.744284336 +0200 @@ -62,7 +62,7 @@ void *switch_to_tt(void *prev, void *nex reading = 0; err = os_write_file(to->thread.mode.tt.switch_pipe[1], &c, sizeof(c)); if(err != sizeof(c)) - panic("write of switch_pipe failed, errno = %d", -err); + panic("write of switch_pipe failed, err = %d", -err); reading = 1; if((from->state == TASK_ZOMBIE) || (from->state == TASK_DEAD)) @@ -104,48 +104,72 @@ void *switch_to_tt(void *prev, void *nex void release_thread_tt(struct task_struct *task) { - os_kill_process(task->thread.mode.tt.extern_pid, 0); + int pid = task->thread.mode.tt.extern_pid; + + if(os_getpid() != pid) + os_kill_process(pid, 0); } void exit_thread_tt(void) { - close(current->thread.mode.tt.switch_pipe[0]); - close(current->thread.mode.tt.switch_pipe[1]); + os_close_file(current->thread.mode.tt.switch_pipe[0]); + os_close_file(current->thread.mode.tt.switch_pipe[1]); } void schedule_tail(task_t *prev); static void new_thread_handler(int sig) { + unsigned long disable; int (*fn)(void *); void *arg; fn = current->thread.request.u.thread.proc; arg = current->thread.request.u.thread.arg; + UPT_SC(¤t->thread.regs.regs) = (void *) (&sig + 1); + disable = (1 << (SIGVTALRM - 1)) | (1 << (SIGALRM - 1)) | + (1 << (SIGIO - 1)) | (1 << (SIGPROF - 1)); + SC_SIGMASK(UPT_SC(¤t->thread.regs.regs)) &= ~disable; + suspend_new_thread(current->thread.mode.tt.switch_pipe[0]); - block_signals(); + force_flush_all(); + if(current->thread.prev_sched != NULL) + schedule_tail(current->thread.prev_sched); + current->thread.prev_sched = NULL; + init_new_thread_signals(1); -#ifdef CONFIG_SMP - schedule_tail(current->thread.prev_sched); -#endif enable_timer(); free_page(current->thread.temp_stack); set_cmdline("(kernel thread)"); - force_flush_all(); - current->thread.prev_sched = NULL; change_sig(SIGUSR1, 1); change_sig(SIGVTALRM, 1); change_sig(SIGPROF, 1); - unblock_signals(); + local_irq_enable(); if(!run_kernel_thread(fn, arg, ¤t->thread.exec_buf)) do_exit(0); } static int new_thread_proc(void *stack) { + /* local_irq_disable is needed to block out signals until this thread is + * properly scheduled. Otherwise, the tracing thread will get mighty + * upset about any signals that arrive before that. + * This has the complication that it sets the saved signal mask in + * the sigcontext to block signals. This gets restored when this + * thread (or a descendant, since they get a copy of this sigcontext) + * returns to userspace. + * So, this is compensated for elsewhere. + * XXX There is still a small window until local_irq_disable() actually + * finishes where signals are possible - shouldn't be a problem in + * practice since SIGIO hasn't been forwarded here yet, and the + * local_irq_disable should finish before a SIGVTALRM has time to be + * delivered. + */ + + local_irq_disable(); init_new_thread_stack(stack, new_thread_handler); os_usr1_process(os_getpid()); return(0); @@ -156,7 +180,7 @@ static int new_thread_proc(void *stack) * itself with a SIGUSR1. set_user_mode has to be run with SIGUSR1 off, * so it is blocked before it's called. They are re-enabled on sigreturn * despite the fact that they were blocked when the SIGUSR1 was issued because - * copy_thread copies the parent's signcontext, including the signal mask + * copy_thread copies the parent's sigcontext, including the signal mask * onto the signal frame. */ @@ -165,35 +189,32 @@ void finish_fork_handler(int sig) UPT_SC(¤t->thread.regs.regs) = (void *) (&sig + 1); suspend_new_thread(current->thread.mode.tt.switch_pipe[0]); -#ifdef CONFIG_SMP - schedule_tail(NULL); -#endif + force_flush_all(); + if(current->thread.prev_sched != NULL) + schedule_tail(current->thread.prev_sched); + current->thread.prev_sched = NULL; + enable_timer(); change_sig(SIGVTALRM, 1); local_irq_enable(); - force_flush_all(); if(current->mm != current->parent->mm) protect_memory(uml_reserved, high_physmem - uml_reserved, 1, 1, 0, 1); - task_protections((unsigned long) current->thread_info); - - current->thread.prev_sched = NULL; + task_protections((unsigned long) current_thread); free_page(current->thread.temp_stack); + local_irq_disable(); change_sig(SIGUSR1, 0); set_user_mode(current); } -static int sigusr1 = SIGUSR1; - int fork_tramp(void *stack) { - int sig = sigusr1; - local_irq_disable(); + arch_init_thread(); init_new_thread_stack(stack, finish_fork_handler); - kill(os_getpid(), sig); + os_usr1_process(os_getpid()); return(0); } @@ -213,8 +234,8 @@ int copy_thread_tt(int nr, unsigned long } err = os_pipe(p->thread.mode.tt.switch_pipe, 1, 1); - if(err){ - printk("copy_thread : pipe failed, errno = %d\n", -err); + if(err < 0){ + printk("copy_thread : pipe failed, err = %d\n", -err); return(err); } @@ -377,8 +398,8 @@ static void mprotect_kernel_mem(int w) pages = (1 << CONFIG_KERNEL_STACK_ORDER); - start = (unsigned long) current->thread_info + PAGE_SIZE; - end = (unsigned long) current + PAGE_SIZE * pages; + start = (unsigned long) current_thread + PAGE_SIZE; + end = (unsigned long) current_thread + PAGE_SIZE * pages; protect_memory(uml_reserved, start - uml_reserved, 1, w, 1, 1); protect_memory(end, high_physmem - end, 1, w, 1, 1); @@ -454,8 +475,9 @@ void set_init_pid(int pid) init_task.thread.mode.tt.extern_pid = pid; err = os_pipe(init_task.thread.mode.tt.switch_pipe, 1, 1); - if(err) panic("Can't create switch pipe for init_task, errno = %d", - err); + if(err) + panic("Can't create switch pipe for init_task, errno = %d", + -err); } int singlestepping_tt(void *t) diff -puN arch/um/kernel/tt/ptproxy/Makefile~Main-uml-patch-no-skas arch/um/kernel/tt/ptproxy/Makefile --- uml-linux-2.6.7/arch/um/kernel/tt/ptproxy/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.599306376 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/ptproxy/Makefile 2004-06-29 21:02:55.744284336 +0200 @@ -9,5 +9,3 @@ USER_OBJS := $(foreach file,$(obj-y),$(s $(USER_OBJS) : %.o: %.c $(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $< - -clean: diff -puN arch/um/kernel/tt/ptproxy/proxy.c~Main-uml-patch-no-skas arch/um/kernel/tt/ptproxy/proxy.c --- uml-linux-2.6.7/arch/um/kernel/tt/ptproxy/proxy.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.600306224 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/ptproxy/proxy.c 2004-06-29 21:02:55.744284336 +0200 @@ -15,7 +15,6 @@ Jeff Dike (jdike@karaya.com) : Modified #include #include #include -#include #include #include #include @@ -293,10 +292,10 @@ void fake_child_exit(void) } char gdb_init_string[] = -"att 1 -b panic -b stop -handle SIGWINCH nostop noprint pass +"att 1 \n\ +b panic \n\ +b stop \n\ +handle SIGWINCH nostop noprint pass \n\ "; int start_debugger(char *prog, int startup, int stop, int *fd_out) @@ -304,7 +303,8 @@ int start_debugger(char *prog, int start int slave, child; slave = open_gdb_chan(); - if((child = fork()) == 0){ + child = fork(); + if(child == 0){ char *tempname = NULL; int fd; @@ -327,18 +327,19 @@ int start_debugger(char *prog, int start exit(1); #endif } - if((fd = make_tempfile("/tmp/gdb_init-XXXXXX", &tempname, 0)) < 0){ - printk("start_debugger : make_tempfile failed, errno = %d\n", - errno); + fd = make_tempfile("/tmp/gdb_init-XXXXXX", &tempname, 0); + if(fd < 0){ + printk("start_debugger : make_tempfile failed," + "err = %d\n", -fd); exit(1); } - write(fd, gdb_init_string, sizeof(gdb_init_string) - 1); + os_write_file(fd, gdb_init_string, sizeof(gdb_init_string) - 1); if(startup){ if(stop){ - write(fd, "b start_kernel\n", + os_write_file(fd, "b start_kernel\n", strlen("b start_kernel\n")); } - write(fd, "c\n", strlen("c\n")); + os_write_file(fd, "c\n", strlen("c\n")); } if(ptrace(PTRACE_TRACEME, 0, 0, 0) < 0){ printk("start_debugger : PTRACE_TRACEME failed, " diff -puN arch/um/kernel/tt/ptproxy/sysdep.c~Main-uml-patch-no-skas arch/um/kernel/tt/ptproxy/sysdep.c --- uml-linux-2.6.7/arch/um/kernel/tt/ptproxy/sysdep.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.601306072 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/ptproxy/sysdep.c 2004-06-29 21:02:55.744284336 +0200 @@ -9,6 +9,7 @@ terms and conditions. #include #include #include +#include #include #include #include diff -puN arch/um/kernel/tt/ptproxy/wait.c~Main-uml-patch-no-skas arch/um/kernel/tt/ptproxy/wait.c --- uml-linux-2.6.7/arch/um/kernel/tt/ptproxy/wait.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.602305920 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/ptproxy/wait.c 2004-06-29 21:02:55.745284184 +0200 @@ -56,21 +56,23 @@ int parent_wait_return(struct debugger * int real_wait_return(struct debugger *debugger) { unsigned long ip; - int err, pid; + int pid; pid = debugger->pid; + ip = ptrace(PTRACE_PEEKUSER, pid, PT_IP_OFFSET, 0); - ip = IP_RESTART_SYSCALL(ip); - err = ptrace(PTRACE_POKEUSER, pid, PT_IP_OFFSET, ip); + IP_RESTART_SYSCALL(ip); + if(ptrace(PTRACE_POKEUSER, pid, PT_IP_OFFSET, ip) < 0) tracer_panic("real_wait_return : Failed to restart system " - "call, errno = %d\n"); + "call, errno = %d\n", errno); + if((ptrace(PTRACE_SYSCALL, debugger->pid, 0, SIGCHLD) < 0) || (ptrace(PTRACE_SYSCALL, debugger->pid, 0, 0) < 0) || (ptrace(PTRACE_SYSCALL, debugger->pid, 0, 0) < 0) || debugger_normal_return(debugger, -1)) tracer_panic("real_wait_return : gdb failed to wait, " - "errno = %d\n"); + "errno = %d\n", errno); return(0); } diff -puN arch/um/kernel/tt/syscall_kern.c~Main-uml-patch-no-skas arch/um/kernel/tt/syscall_kern.c --- uml-linux-2.6.7/arch/um/kernel/tt/syscall_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.603305768 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/syscall_kern.c 2004-06-29 21:02:55.745284184 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ diff -puN arch/um/kernel/tt/syscall_user.c~Main-uml-patch-no-skas arch/um/kernel/tt/syscall_user.c --- uml-linux-2.6.7/arch/um/kernel/tt/syscall_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.604305616 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/syscall_user.c 2004-06-29 21:02:55.745284184 +0200 @@ -33,7 +33,7 @@ void syscall_handler_tt(int sig, union u SC_START_SYSCALL(sc); index = record_syscall_start(syscall); - syscall_trace(); + syscall_trace(regs, 1); result = execute_syscall(regs); /* regs->sc may have changed while the system call ran (there may @@ -46,7 +46,7 @@ void syscall_handler_tt(int sig, union u (result == -ERESTARTNOINTR)) do_signal(result); - syscall_trace(); + syscall_trace(regs, 0); record_syscall_end(index, result); } diff -puN arch/um/kernel/tt/sys-i386/Makefile~Main-uml-patch-no-skas arch/um/kernel/tt/sys-i386/Makefile --- uml-linux-2.6.7/arch/um/kernel/tt/sys-i386/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.605305464 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/sys-i386/Makefile 2004-06-29 21:02:55.745284184 +0200 @@ -10,5 +10,3 @@ USER_OBJS := $(foreach file,$(USER_OBJS) $(USER_OBJS) : %.o: %.c $(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $< - -clean : diff -puN arch/um/kernel/tt/tlb.c~Main-uml-patch-no-skas arch/um/kernel/tt/tlb.c --- uml-linux-2.6.7/arch/um/kernel/tt/tlb.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.606305312 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/tlb.c 2004-06-29 21:02:55.746284032 +0200 @@ -10,6 +10,7 @@ #include "asm/page.h" #include "asm/pgtable.h" #include "asm/uaccess.h" +#include "asm/tlbflush.h" #include "user_util.h" #include "mem_user.h" #include "os.h" diff -puN arch/um/kernel/tt/tracer.c~Main-uml-patch-no-skas arch/um/kernel/tt/tracer.c --- uml-linux-2.6.7/arch/um/kernel/tt/tracer.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.608305008 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/tracer.c 2004-06-29 21:02:55.746284032 +0200 @@ -39,16 +39,17 @@ int is_tracer_winch(int pid, int fd, voi return(0); register_winch_irq(tracer_winch[0], fd, -1, data); - return(0); + return(1); } static void tracer_winch_handler(int sig) { + int n; char c = 1; - if(write(tracer_winch[1], &c, sizeof(c)) != sizeof(c)) - printk("tracer_winch_handler - write failed, errno = %d\n", - errno); + n = os_write_file(tracer_winch[1], &c, sizeof(c)); + if(n != sizeof(c)) + printk("tracer_winch_handler - write failed, err = %d\n", -n); } /* Called only by the tracing thread during initialization */ @@ -58,9 +59,8 @@ static void setup_tracer_winch(void) int err; err = os_pipe(tracer_winch, 1, 1); - if(err){ - printk("setup_tracer_winch : os_pipe failed, errno = %d\n", - -err); + if(err < 0){ + printk("setup_tracer_winch : os_pipe failed, err = %d\n", -err); return; } signal(SIGWINCH, tracer_winch_handler); @@ -130,8 +130,8 @@ static void sleeping_process_signal(int case SIGTSTP: if(ptrace(PTRACE_CONT, pid, 0, sig) < 0) tracer_panic("sleeping_process_signal : Failed to " - "continue pid %d, errno = %d\n", pid, - sig); + "continue pid %d, signal = %d, " + "errno = %d\n", pid, sig, errno); break; /* This happens when the debugger (e.g. strace) is doing system call @@ -145,7 +145,7 @@ static void sleeping_process_signal(int if(ptrace(PTRACE_SYSCALL, pid, 0, 0) < 0) tracer_panic("sleeping_process_signal : Failed to " "PTRACE_SYSCALL pid %d, errno = %d\n", - pid, sig); + pid, errno); break; case SIGSTOP: break; @@ -218,7 +218,7 @@ int tracer(int (*init_proc)(void *), voi err = attach(debugger_parent); if(err){ printf("Failed to attach debugger parent %d, " - "errno = %d\n", debugger_parent, err); + "errno = %d\n", debugger_parent, -err); debugger_parent = -1; } else { @@ -233,7 +233,8 @@ int tracer(int (*init_proc)(void *), voi } set_cmdline("(tracing thread)"); while(1){ - if((pid = waitpid(-1, &status, WUNTRACED)) <= 0){ + pid = waitpid(-1, &status, WUNTRACED); + if(pid <= 0){ if(errno != ECHILD){ printf("wait failed - errno = %d\n", errno); } @@ -401,7 +402,7 @@ static int __init uml_debug_setup(char * if(!strcmp(line, "go")) debug_stop = 0; else if(!strcmp(line, "parent")) debug_parent = 1; - else printk("Unknown debug option : '%s'\n", line); + else printf("Unknown debug option : '%s'\n", line); line = next; } diff -puN /dev/null arch/um/kernel/tt/uaccess.c --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/uaccess.c 2004-06-29 21:02:55.746284032 +0200 @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + +#include "linux/sched.h" +#include "asm/uaccess.h" + +int copy_from_user_tt(void *to, const void *from, int n) +{ + if(!access_ok_tt(VERIFY_READ, from, n)) + return(n); + + return(__do_copy_from_user(to, from, n, ¤t->thread.fault_addr, + ¤t->thread.fault_catcher)); +} + +int copy_to_user_tt(void *to, const void *from, int n) +{ + if(!access_ok_tt(VERIFY_WRITE, to, n)) + return(n); + + return(__do_copy_to_user(to, from, n, ¤t->thread.fault_addr, + ¤t->thread.fault_catcher)); +} + +int strncpy_from_user_tt(char *dst, const char *src, int count) +{ + int n; + + if(!access_ok_tt(VERIFY_READ, src, 1)) + return(-EFAULT); + + n = __do_strncpy_from_user(dst, src, count, + ¤t->thread.fault_addr, + ¤t->thread.fault_catcher); + if(n < 0) return(-EFAULT); + return(n); +} + +int __clear_user_tt(void *mem, int len) +{ + return(__do_clear_user(mem, len, + ¤t->thread.fault_addr, + ¤t->thread.fault_catcher)); +} + +int clear_user_tt(void *mem, int len) +{ + if(!access_ok_tt(VERIFY_WRITE, mem, len)) + return(len); + + return(__do_clear_user(mem, len, ¤t->thread.fault_addr, + ¤t->thread.fault_catcher)); +} + +int strnlen_user_tt(const void *str, int len) +{ + return(__do_strnlen_user(str, len, + ¤t->thread.fault_addr, + ¤t->thread.fault_catcher)); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN arch/um/kernel/tt/uaccess_user.c~Main-uml-patch-no-skas arch/um/kernel/tt/uaccess_user.c --- uml-linux-2.6.7/arch/um/kernel/tt/uaccess_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.609304856 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/uaccess_user.c 2004-06-29 21:02:55.747283880 +0200 @@ -8,15 +8,20 @@ #include #include "user_util.h" #include "uml_uaccess.h" +#include "task.h" +#include "kern_util.h" int __do_copy_from_user(void *to, const void *from, int n, void **fault_addr, void **fault_catcher) { + struct tt_regs save = TASK_REGS(get_current())->tt; unsigned long fault; int faulted; fault = __do_user_copy(to, from, n, fault_addr, fault_catcher, __do_copy, &faulted); + TASK_REGS(get_current())->tt = save; + if(!faulted) return(0); else return(n - (fault - (unsigned long) from)); } @@ -29,11 +34,14 @@ static void __do_strncpy(void *dst, cons int __do_strncpy_from_user(char *dst, const char *src, unsigned long count, void **fault_addr, void **fault_catcher) { + struct tt_regs save = TASK_REGS(get_current())->tt; unsigned long fault; int faulted; fault = __do_user_copy(dst, src, count, fault_addr, fault_catcher, __do_strncpy, &faulted); + TASK_REGS(get_current())->tt = save; + if(!faulted) return(strlen(dst)); else return(-1); } @@ -46,11 +54,14 @@ static void __do_clear(void *to, const v int __do_clear_user(void *mem, unsigned long len, void **fault_addr, void **fault_catcher) { + struct tt_regs save = TASK_REGS(get_current())->tt; unsigned long fault; int faulted; fault = __do_user_copy(mem, NULL, len, fault_addr, fault_catcher, __do_clear, &faulted); + TASK_REGS(get_current())->tt = save; + if(!faulted) return(0); else return(len - (fault - (unsigned long) mem)); } @@ -58,19 +69,20 @@ int __do_clear_user(void *mem, unsigned int __do_strnlen_user(const char *str, unsigned long n, void **fault_addr, void **fault_catcher) { + struct tt_regs save = TASK_REGS(get_current())->tt; int ret; unsigned long *faddrp = (unsigned long *)fault_addr; jmp_buf jbuf; *fault_catcher = &jbuf; - if(setjmp(jbuf) == 0){ + if(sigsetjmp(jbuf, 1) == 0) ret = strlen(str) + 1; - } - else { - ret = *faddrp - (unsigned long) str; - } + else ret = *faddrp - (unsigned long) str; + *fault_addr = NULL; *fault_catcher = NULL; + + TASK_REGS(get_current())->tt = save; return ret; } diff -puN arch/um/kernel/tt/unmap.c~Main-uml-patch-no-skas arch/um/kernel/tt/unmap.c --- uml-linux-2.6.7/arch/um/kernel/tt/unmap.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.610304704 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tt/unmap.c 2004-06-29 21:02:55.747283880 +0200 @@ -3,10 +3,7 @@ * Licensed under the GPL */ -#include -#include #include -#include "user.h" int switcheroo(int fd, int prot, void *from, void *to, int size) { diff -puN arch/um/kernel/tty_log.c~Main-uml-patch-no-skas arch/um/kernel/tty_log.c --- uml-linux-2.6.7/arch/um/kernel/tty_log.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.611304552 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/tty_log.c 2004-06-29 21:02:55.747283880 +0200 @@ -9,10 +9,10 @@ #include #include #include -#include #include #include "init.h" #include "user.h" +#include "kern_util.h" #include "os.h" #define TTY_LOG_DIR "./" @@ -24,29 +24,40 @@ static int tty_log_fd = -1; #define TTY_LOG_OPEN 1 #define TTY_LOG_CLOSE 2 #define TTY_LOG_WRITE 3 +#define TTY_LOG_EXEC 4 + +#define TTY_READ 1 +#define TTY_WRITE 2 struct tty_log_buf { int what; unsigned long tty; int len; + int direction; + unsigned long sec; + unsigned long usec; }; -int open_tty_log(void *tty) +int open_tty_log(void *tty, void *current_tty) { struct timeval tv; struct tty_log_buf data; char buf[strlen(tty_log_dir) + sizeof("01234567890-01234567\0")]; int fd; + gettimeofday(&tv, NULL); if(tty_log_fd != -1){ - data = ((struct tty_log_buf) { what : TTY_LOG_OPEN, - tty : (unsigned long) tty, - len : 0 }); - write(tty_log_fd, &data, sizeof(data)); + data = ((struct tty_log_buf) { .what = TTY_LOG_OPEN, + .tty = (unsigned long) tty, + .len = sizeof(current_tty), + .direction = 0, + .sec = tv.tv_sec, + .usec = tv.tv_usec } ); + os_write_file(tty_log_fd, &data, sizeof(data)); + os_write_file(tty_log_fd, ¤t_tty, data.len); return(tty_log_fd); } - gettimeofday(&tv, NULL); sprintf(buf, "%s/%0u-%0u", tty_log_dir, (unsigned int) tv.tv_sec, (unsigned int) tv.tv_usec); @@ -62,30 +73,117 @@ int open_tty_log(void *tty) void close_tty_log(int fd, void *tty) { struct tty_log_buf data; + struct timeval tv; if(tty_log_fd != -1){ - data = ((struct tty_log_buf) { what : TTY_LOG_CLOSE, - tty : (unsigned long) tty, - len : 0 }); - write(tty_log_fd, &data, sizeof(data)); + gettimeofday(&tv, NULL); + data = ((struct tty_log_buf) { .what = TTY_LOG_CLOSE, + .tty = (unsigned long) tty, + .len = 0, + .direction = 0, + .sec = tv.tv_sec, + .usec = tv.tv_usec } ); + os_write_file(tty_log_fd, &data, sizeof(data)); return; } - close(fd); + os_close_file(fd); } -int write_tty_log(int fd, char *buf, int len, void *tty) +static int log_chunk(int fd, const char *buf, int len) { + int total = 0, try, missed, n; + char chunk[64]; + + while(len > 0){ + try = (len > sizeof(chunk)) ? sizeof(chunk) : len; + missed = copy_from_user_proc(chunk, (char *) buf, try); + try -= missed; + n = os_write_file(fd, chunk, try); + if(n != try) { + if(n < 0) + return(n); + return(-EIO); + } + if(missed != 0) + return(-EFAULT); + + len -= try; + total += try; + buf += try; + } + + return(total); +} + +int write_tty_log(int fd, const char *buf, int len, void *tty, int is_read) +{ + struct timeval tv; struct tty_log_buf data; + int direction; if(fd == tty_log_fd){ - data = ((struct tty_log_buf) { what : TTY_LOG_WRITE, - tty : (unsigned long) tty, - len : len }); - write(tty_log_fd, &data, sizeof(data)); + gettimeofday(&tv, NULL); + direction = is_read ? TTY_READ : TTY_WRITE; + data = ((struct tty_log_buf) { .what = TTY_LOG_WRITE, + .tty = (unsigned long) tty, + .len = len, + .direction = direction, + .sec = tv.tv_sec, + .usec = tv.tv_usec } ); + os_write_file(tty_log_fd, &data, sizeof(data)); } - return(write(fd, buf, len)); + + return(log_chunk(fd, buf, len)); } +void log_exec(char **argv, void *tty) +{ + struct timeval tv; + struct tty_log_buf data; + char **ptr,*arg; + int len; + + if(tty_log_fd == -1) return; + + gettimeofday(&tv, NULL); + + len = 0; + for(ptr = argv; ; ptr++){ + if(copy_from_user_proc(&arg, ptr, sizeof(arg))) + return; + if(arg == NULL) break; + len += strlen_user_proc(arg); + } + + data = ((struct tty_log_buf) { .what = TTY_LOG_EXEC, + .tty = (unsigned long) tty, + .len = len, + .direction = 0, + .sec = tv.tv_sec, + .usec = tv.tv_usec } ); + os_write_file(tty_log_fd, &data, sizeof(data)); + + for(ptr = argv; ; ptr++){ + if(copy_from_user_proc(&arg, ptr, sizeof(arg))) + return; + if(arg == NULL) break; + log_chunk(tty_log_fd, arg, strlen_user_proc(arg)); + } +} + +extern void register_tty_logger(int (*opener)(void *, void *), + int (*writer)(int, const char *, int, + void *, int), + void (*closer)(int, void *)); + +static int register_logger(void) +{ + register_tty_logger(open_tty_log, write_tty_log, close_tty_log); + return(0); +} + +__uml_initcall(register_logger); + static int __init set_tty_log_dir(char *name, int *add) { tty_log_dir = name; @@ -104,7 +202,7 @@ static int __init set_tty_log_fd(char *n tty_log_fd = strtoul(name, &end, 0); if((*end != '\0') || (end == name)){ - printk("set_tty_log_fd - strtoul failed on '%s'\n", name); + printf("set_tty_log_fd - strtoul failed on '%s'\n", name); tty_log_fd = -1; } return 0; diff -puN arch/um/kernel/uaccess_user.c~Main-uml-patch-no-skas arch/um/kernel/uaccess_user.c --- uml-linux-2.6.7/arch/um/kernel/uaccess_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.612304400 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/uaccess_user.c 2004-06-29 21:02:55.747283880 +0200 @@ -20,7 +20,7 @@ unsigned long __do_user_copy(void *to, c jmp_buf jbuf; *fault_catcher = &jbuf; - if(setjmp(jbuf) == 0){ + if(sigsetjmp(jbuf, 1) == 0){ (*op)(to, from, n); ret = 0; *faulted_out = 0; diff -puN arch/um/kernel/um_arch.c~Main-uml-patch-no-skas arch/um/kernel/um_arch.c --- uml-linux-2.6.7/arch/um/kernel/um_arch.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.614304096 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/um_arch.c 2004-06-29 21:02:55.748283728 +0200 @@ -38,13 +38,18 @@ #include "mode_kern.h" #include "mode.h" -#define DEFAULT_COMMAND_LINE "root=6200" +#define DEFAULT_COMMAND_LINE "root=98:0" struct cpuinfo_um boot_cpu_data = { .loops_per_jiffy = 0, .ipi_pipe = { -1, -1 } }; +/* Placeholder to make UML link until the vsyscall stuff is actually + * implemented + */ +void *__kernel_vsyscall; + unsigned long thread_saved_pc(struct task_struct *task) { return(os_process_pc(CHOOSE_MODE_PROC(thread_pid_tt, thread_pid_skas, @@ -53,18 +58,22 @@ unsigned long thread_saved_pc(struct tas static int show_cpuinfo(struct seq_file *m, void *v) { - int index; + int index = 0; - index = (struct cpuinfo_um *)v - cpu_data; #ifdef CONFIG_SMP + index = (struct cpuinfo_um *) v - cpu_data; if (!cpu_online(index)) return 0; #endif - seq_printf(m, "bogomips\t: %lu.%02lu\n", + seq_printf(m, "processor\t: %d\n", index); + seq_printf(m, "vendor_id\t: User Mode Linux\n"); + seq_printf(m, "model name\t: UML\n"); + seq_printf(m, "mode\t\t: %s\n", CHOOSE_MODE("tt", "skas")); + seq_printf(m, "host\t\t: %s\n", host_info); + seq_printf(m, "bogomips\t: %lu.%02lu\n\n", loops_per_jiffy/(500000/HZ), (loops_per_jiffy/(5000/HZ)) % 100); - seq_printf(m, "host\t\t: %s\n", host_info); return(0); } @@ -134,12 +143,12 @@ void set_cmdline(char *cmd) if(umid != NULL){ snprintf(argv1_begin, (argv1_end - argv1_begin) * sizeof(*ptr), - "(%s)", umid); + "(%s) ", umid); ptr = &argv1_begin[strlen(argv1_begin)]; } else ptr = argv1_begin; - snprintf(ptr, (argv1_end - ptr) * sizeof(*ptr), " [%s]", cmd); + snprintf(ptr, (argv1_end - ptr) * sizeof(*ptr), "[%s]", cmd); memset(argv1_begin + strlen(argv1_begin), '\0', argv1_end - argv1_begin - strlen(argv1_begin)); #endif @@ -179,7 +188,7 @@ __uml_setup("root=", uml_root_setup, static int __init uml_ncpus_setup(char *line, int *add) { if (!sscanf(line, "%d", &ncpus)) { - printk("Couldn't parse [%s]\n", line); + printf("Couldn't parse [%s]\n", line); return -1; } @@ -210,7 +219,7 @@ static int __init mode_tt_setup(char *li static int __init mode_tt_setup(char *line, int *add) { - printk("CONFIG_MODE_TT disabled - 'mode=tt' ignored\n"); + printf("CONFIG_MODE_TT disabled - 'mode=tt' ignored\n"); return(0); } @@ -221,7 +230,7 @@ static int __init mode_tt_setup(char *li static int __init mode_tt_setup(char *line, int *add) { - printk("CONFIG_MODE_SKAS disabled - 'mode=tt' redundant\n"); + printf("CONFIG_MODE_SKAS disabled - 'mode=tt' redundant\n"); return(0); } @@ -291,7 +300,7 @@ static void __init uml_postsetup(void) /* Set during early boot */ unsigned long brk_start; -static struct vm_reserved kernel_vm_reserved; +unsigned long end_iomem; #define MIN_VMALLOC (32 * 1024 * 1024) @@ -299,7 +308,7 @@ int linux_main(int argc, char **argv) { unsigned long avail; unsigned long virtmem_size, max_physmem; - unsigned int i, add, err; + unsigned int i, add; for (i = 1; i < argc; i++){ if((i == 1) && (argv[i][0] == ' ')) continue; @@ -328,12 +337,16 @@ int linux_main(int argc, char **argv) argv1_end = &argv[1][strlen(argv[1])]; #endif - set_usable_vm(uml_physmem, get_kmem_end()); - highmem = 0; - max_physmem = get_kmem_end() - uml_physmem - MIN_VMALLOC; - if(physmem_size > max_physmem){ - highmem = physmem_size - max_physmem; + iomem_size = (iomem_size + PAGE_SIZE - 1) & PAGE_MASK; + max_physmem = get_kmem_end() - uml_physmem - iomem_size - MIN_VMALLOC; + + /* Zones have to begin on a 1 << MAX_ORDER page boundary, + * so this makes sure that's true for highmem + */ + max_physmem &= ~((1 << (PAGE_SHIFT + MAX_ORDER)) - 1); + if(physmem_size + iomem_size > max_physmem){ + highmem = physmem_size + iomem_size - max_physmem; physmem_size -= highmem; #ifndef CONFIG_HIGHMEM highmem = 0; @@ -343,11 +356,19 @@ int linux_main(int argc, char **argv) } high_physmem = uml_physmem + physmem_size; - high_memory = (void *) high_physmem; + end_iomem = high_physmem + iomem_size; + high_memory = (void *) end_iomem; start_vm = VMALLOC_START; - setup_physmem(uml_physmem, uml_reserved, physmem_size); + setup_physmem(uml_physmem, uml_reserved, physmem_size, highmem); + if(init_maps(physmem_size, iomem_size, highmem)){ + printf("Failed to allocate mem_map for %ld bytes of physical " + "memory and %ld bytes of highmem\n", physmem_size, + highmem); + exit(1); + } + virtmem_size = physmem_size; avail = get_kmem_end() - start_vm; if(physmem_size > avail) virtmem_size = avail; @@ -357,28 +378,26 @@ int linux_main(int argc, char **argv) printf("Kernel virtual memory size shrunk to %ld bytes\n", virtmem_size); - err = reserve_vm(high_physmem, end_vm, &kernel_vm_reserved); - if(err){ - printf("Failed to reserve VM area for kernel VM\n"); - exit(1); - } - uml_postsetup(); init_task.thread.kernel_stack = (unsigned long) &init_thread_info + 2 * PAGE_SIZE; task_protections((unsigned long) &init_thread_info); + os_flush_stdout(); return(CHOOSE_MODE(start_uml_tt(), start_uml_skas())); } +extern int uml_exitcode; + static int panic_exit(struct notifier_block *self, unsigned long unused1, void *unused2) { #ifdef CONFIG_MAGIC_SYSRQ - handle_sysrq('p', ¤t->thread.regs, NULL, NULL); + handle_sysrq('p', ¤t->thread.regs, NULL); #endif + uml_exitcode = 1; machine_halt(); return(0); } @@ -403,6 +422,11 @@ void __init check_bugs(void) arch_check_bugs(); check_ptrace(); check_sigio(); + check_devanon(); +} + +void apply_alternatives(void *start, void *end) +{ } /* diff -puN arch/um/kernel/umid.c~Main-uml-patch-no-skas arch/um/kernel/umid.c --- uml-linux-2.6.7/arch/um/kernel/umid.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.615303944 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/umid.c 2004-06-29 21:02:55.749283576 +0200 @@ -5,7 +5,6 @@ #include #include -#include #include #include #include @@ -33,18 +32,19 @@ static char *uml_dir = UML_DIR; static int umid_is_random = 1; static int umid_inited = 0; -static int make_umid(void); +static int make_umid(int (*printer)(const char *fmt, ...)); -static int __init set_umid(char *name, int is_random) +static int __init set_umid(char *name, int is_random, + int (*printer)(const char *fmt, ...)) { if(umid_inited){ - printk("Unique machine name can't be set twice\n"); + (*printer)("Unique machine name can't be set twice\n"); return(-1); } if(strlen(name) > UMID_LEN - 1) - printk("Unique machine name is being truncated to %s " - "characters\n", UMID_LEN); + (*printer)("Unique machine name is being truncated to %s " + "characters\n", UMID_LEN); strlcpy(umid, name, sizeof(umid)); umid_is_random = is_random; @@ -54,7 +54,7 @@ static int __init set_umid(char *name, i static int __init set_umid_arg(char *name, int *add) { - return(set_umid(name, 0)); + return(set_umid(name, 0, printf)); } __uml_setup("umid=", set_umid_arg, @@ -67,7 +67,7 @@ int __init umid_file_name(char *name, ch { int n; - if(!umid_inited && make_umid()) return(-1); + if(!umid_inited && make_umid(printk)) return(-1); n = strlen(uml_dir) + strlen(umid) + strlen(name) + 1; if(n > len){ @@ -85,22 +85,23 @@ static int __init create_pid_file(void) { char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")]; char pid[sizeof("nnnnn\0")]; - int fd; + int fd, n; if(umid_file_name("pid", file, sizeof(file))) return 0; fd = os_open_file(file, of_create(of_excl(of_rdwr(OPENFLAGS()))), 0644); if(fd < 0){ - printk("Open of machine pid file \"%s\" failed - " - "errno = %d\n", file, -fd); + printf("Open of machine pid file \"%s\" failed - " + "err = %d\n", file, -fd); return 0; } sprintf(pid, "%d\n", os_getpid()); - if(write(fd, pid, strlen(pid)) != strlen(pid)) - printk("Write of pid file failed - errno = %d\n", errno); - close(fd); + n = os_write_file(fd, pid, strlen(pid)); + if(n != strlen(pid)) + printf("Write of pid file failed - err = %d\n", -n); + os_close_file(fd); return 0; } @@ -111,7 +112,8 @@ static int actually_do_remove(char *dir) int len; char file[256]; - if((directory = opendir(dir)) == NULL){ + directory = opendir(dir); + if(directory == NULL){ printk("actually_do_remove : couldn't open directory '%s', " "errno = %d\n", dir, errno); return(1); @@ -160,22 +162,24 @@ int not_dead_yet(char *dir) { char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")]; char pid[sizeof("nnnnn\0")], *end; - int dead, fd, p; + int dead, fd, p, n; sprintf(file, "%s/pid", dir); dead = 0; - if((fd = os_open_file(file, of_read(OPENFLAGS()), 0)) < 0){ + fd = os_open_file(file, of_read(OPENFLAGS()), 0); + if(fd < 0){ if(fd != -ENOENT){ printk("not_dead_yet : couldn't open pid file '%s', " - "errno = %d\n", file, -fd); + "err = %d\n", file, -fd); return(1); } dead = 1; } if(fd > 0){ - if(read(fd, pid, sizeof(pid)) < 0){ + n = os_read_file(fd, pid, sizeof(pid)); + if(n < 0){ printk("not_dead_yet : couldn't read pid file '%s', " - "errno = %d\n", file, errno); + "err = %d\n", file, -n); return(1); } p = strtoul(pid, &end, 0); @@ -197,7 +201,7 @@ static int __init set_uml_dir(char *name if((strlen(name) > 0) && (name[strlen(name) - 1] != '/')){ uml_dir = malloc(strlen(name) + 1); if(uml_dir == NULL){ - printk("Failed to malloc uml_dir - error = %d\n", + printf("Failed to malloc uml_dir - error = %d\n", errno); uml_dir = name; return(0); @@ -217,7 +221,7 @@ static int __init make_uml_dir(void) char *home = getenv("HOME"); if(home == NULL){ - printk("make_uml_dir : no value in environment for " + printf("make_uml_dir : no value in environment for " "$HOME\n"); exit(1); } @@ -232,57 +236,59 @@ static int __init make_uml_dir(void) dir[len + 1] = '\0'; } - if((uml_dir = malloc(strlen(dir) + 1)) == NULL){ + uml_dir = malloc(strlen(dir) + 1); + if(uml_dir == NULL){ printf("make_uml_dir : malloc failed, errno = %d\n", errno); exit(1); } strcpy(uml_dir, dir); if((mkdir(uml_dir, 0777) < 0) && (errno != EEXIST)){ - printk("Failed to mkdir %s - errno = %i\n", uml_dir, errno); + printf("Failed to mkdir %s - errno = %i\n", uml_dir, errno); return(-1); } return 0; } -static int __init make_umid(void) +static int __init make_umid(int (*printer)(const char *fmt, ...)) { int fd, err; char tmp[strlen(uml_dir) + UMID_LEN + 1]; strlcpy(tmp, uml_dir, sizeof(tmp)); - if(*umid == 0){ + if(!umid_inited){ strcat(tmp, "XXXXXX"); fd = mkstemp(tmp); if(fd < 0){ - printk("make_umid - mkstemp failed, errno = %d\n", - errno); + (*printer)("make_umid - mkstemp failed, errno = %d\n", + errno); return(1); } - close(fd); + os_close_file(fd); /* There's a nice tiny little race between this unlink and * the mkdir below. It'd be nice if there were a mkstemp * for directories. */ unlink(tmp); - set_umid(&tmp[strlen(uml_dir)], 1); + set_umid(&tmp[strlen(uml_dir)], 1, printer); } sprintf(tmp, "%s%s", uml_dir, umid); - if((err = mkdir(tmp, 0777)) < 0){ + err = mkdir(tmp, 0777); + if(err < 0){ if(errno == EEXIST){ if(not_dead_yet(tmp)){ - printk("umid '%s' is in use\n", umid); + (*printer)("umid '%s' is in use\n", umid); return(-1); } err = mkdir(tmp, 0777); } } if(err < 0){ - printk("Failed to create %s - errno = %d\n", umid, errno); + (*printer)("Failed to create %s - errno = %d\n", umid, errno); return(-1); } @@ -295,7 +301,13 @@ __uml_setup("uml_dir=", set_uml_dir, ); __uml_postsetup(make_uml_dir); -__uml_postsetup(make_umid); + +static int __init make_umid_setup(void) +{ + return(make_umid(printf)); +} + +__uml_postsetup(make_umid_setup); __uml_postsetup(create_pid_file); /* diff -L arch/um/kernel/user_syms.c -puN arch/um/kernel/user_syms.c~Main-uml-patch-no-skas /dev/null --- uml-linux-2.6.7/arch/um/kernel/user_syms.c +++ /dev/null 1970-01-01 01:00:00.000000000 +0100 @@ -1,113 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "user_util.h" -#include "mem_user.h" -#include "uml-config.h" - -/* Had to steal this from linux/module.h because that file can't be included - * since this includes various user-level headers. - */ - -struct module_symbol -{ - unsigned long value; - const char *name; -}; - -/* Indirect stringification. */ - -#define __MODULE_STRING_1(x) #x -#define __MODULE_STRING(x) __MODULE_STRING_1(x) - -#if !defined(__AUTOCONF_INCLUDED__) - -#define __EXPORT_SYMBOL(sym,str) error config_must_be_included_before_module -#define EXPORT_SYMBOL(var) error config_must_be_included_before_module -#define EXPORT_SYMBOL_NOVERS(var) error config_must_be_included_before_module - -#elif !defined(UML_CONFIG_MODULES) - -#define __EXPORT_SYMBOL(sym,str) -#define EXPORT_SYMBOL(var) -#define EXPORT_SYMBOL_NOVERS(var) - -#else - -#define __EXPORT_SYMBOL(sym, str) \ -const char __kstrtab_##sym[] \ -__attribute__((section(".kstrtab"))) = str; \ -const struct module_symbol __ksymtab_##sym \ -__attribute__((section("__ksymtab"))) = \ -{ (unsigned long)&sym, __kstrtab_##sym } - -#if defined(__MODVERSIONS__) || !defined(UML_CONFIG_MODVERSIONS) -#define EXPORT_SYMBOL(var) __EXPORT_SYMBOL(var, __MODULE_STRING(var)) -#else -#define EXPORT_SYMBOL(var) __EXPORT_SYMBOL(var, __MODULE_STRING(__VERSIONED_SYMBOL(var))) -#endif - -#define EXPORT_SYMBOL_NOVERS(var) __EXPORT_SYMBOL(var, __MODULE_STRING(var)) - -#endif - -EXPORT_SYMBOL(__errno_location); - -EXPORT_SYMBOL(access); -EXPORT_SYMBOL(open); -EXPORT_SYMBOL(open64); -EXPORT_SYMBOL(close); -EXPORT_SYMBOL(read); -EXPORT_SYMBOL(write); -EXPORT_SYMBOL(dup2); -EXPORT_SYMBOL(__xstat); -EXPORT_SYMBOL(__lxstat); -EXPORT_SYMBOL(__lxstat64); -EXPORT_SYMBOL(lseek); -EXPORT_SYMBOL(lseek64); -EXPORT_SYMBOL(chown); -EXPORT_SYMBOL(truncate); -EXPORT_SYMBOL(utime); -EXPORT_SYMBOL(chmod); -EXPORT_SYMBOL(rename); -EXPORT_SYMBOL(__xmknod); - -EXPORT_SYMBOL(symlink); -EXPORT_SYMBOL(link); -EXPORT_SYMBOL(unlink); -EXPORT_SYMBOL(readlink); - -EXPORT_SYMBOL(mkdir); -EXPORT_SYMBOL(rmdir); -EXPORT_SYMBOL(opendir); -EXPORT_SYMBOL(readdir); -EXPORT_SYMBOL(closedir); -EXPORT_SYMBOL(seekdir); -EXPORT_SYMBOL(telldir); - -EXPORT_SYMBOL(ioctl); - -extern ssize_t pread64 (int __fd, void *__buf, size_t __nbytes, - __off64_t __offset); -extern ssize_t pwrite64 (int __fd, __const void *__buf, size_t __n, - __off64_t __offset); -EXPORT_SYMBOL(pread64); -EXPORT_SYMBOL(pwrite64); - -EXPORT_SYMBOL(statfs); -EXPORT_SYMBOL(statfs64); - -EXPORT_SYMBOL(memcpy); -EXPORT_SYMBOL(getuid); - -EXPORT_SYMBOL(memset); -EXPORT_SYMBOL(strstr); - -EXPORT_SYMBOL(find_iomem); diff -puN arch/um/kernel/user_util.c~Main-uml-patch-no-skas arch/um/kernel/user_util.c --- uml-linux-2.6.7/arch/um/kernel/user_util.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.617303640 +0200 +++ uml-linux-2.6.7-paolo/arch/um/kernel/user_util.c 2004-06-29 21:02:55.749283576 +0200 @@ -5,7 +5,6 @@ #include #include -#include #include #include #include @@ -82,7 +81,8 @@ int wait_for_stop(int pid, int sig, int int status, ret; while(1){ - if(((ret = waitpid(pid, &status, WUNTRACED)) < 0) || + ret = waitpid(pid, &status, WUNTRACED); + if((ret < 0) || !WIFSTOPPED(status) || (WSTOPSIG(status) != sig)){ if(ret < 0){ if(errno == EINTR) continue; @@ -119,17 +119,6 @@ int wait_for_stop(int pid, int sig, int } } -int clone_and_wait(int (*fn)(void *), void *arg, void *sp, int flags) -{ - int pid; - - pid = clone(fn, sp, flags, arg); - if(pid < 0) return(-1); - wait_for_stop(pid, SIGSTOP, PTRACE_CONT, NULL); - ptrace(PTRACE_CONT, pid, 0, 0); - return(pid); -} - int raw(int fd, int complain) { struct termios tt; diff -puN arch/um/main.c~Main-uml-patch-no-skas arch/um/main.c --- uml-linux-2.6.7/arch/um/main.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.618303488 +0200 +++ uml-linux-2.6.7-paolo/arch/um/main.c 2004-06-29 21:02:55.750283424 +0200 @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -123,12 +124,14 @@ int main(int argc, char **argv, char **e set_stklim(); - if((new_argv = malloc((argc + 1) * sizeof(char *))) == NULL){ + new_argv = malloc((argc + 1) * sizeof(char *)); + if(new_argv == NULL){ perror("Mallocing argv"); exit(1); } for(i=0;i $@ +# Generated files +define filechk_umlconfig + sed 's/ CONFIG/ UML_CONFIG/' +endef + +$(ARCH_DIR)/include/uml-config.h : $(TOPDIR)/include/linux/autoconf.h + $(call filechk,umlconfig) + +filechk_gen_header = $< $(ARCH_DIR)/include/task.h : $(ARCH_DIR)/util/mk_task - $< > $@ + $(call filechk,gen_header) $(ARCH_DIR)/include/kern_constants.h : $(ARCH_DIR)/util/mk_constants - $< > $@ + $(call filechk,gen_header) -$(ARCH_DIR)/util/mk_task : $(ARCH_DIR)/kernel/skas/include/skas_ptregs.h \ - $(ARCH_DIR)/util FORCE ; +$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants : $(ARCH_DIR)/util \ + sys_prepare FORCE ; $(ARCH_DIR)/util: FORCE - @$(call descend,$@,) + $(Q)$(MAKE) $(build)=$@ -export SUBARCH USER_CFLAGS OS +export SUBARCH USER_CFLAGS OS diff -puN arch/um/Makefile-i386~Main-uml-patch-no-skas arch/um/Makefile-i386 --- uml-linux-2.6.7/arch/um/Makefile-i386~Main-uml-patch-no-skas 2004-06-29 21:02:55.632301360 +0200 +++ uml-linux-2.6.7-paolo/arch/um/Makefile-i386 2004-06-29 21:02:55.750283424 +0200 @@ -16,22 +16,27 @@ SYS_UTIL_DIR := $(ARCH_DIR)/sys-i386/uti SYS_HEADERS = $(SYS_DIR)/sc.h $(SYS_DIR)/thread.h +sys_prepare: $(SYS_DIR)/sc.h + prepare: $(SYS_HEADERS) +filechk_$(SYS_DIR)/sc.h := $(SYS_UTIL_DIR)/mk_sc + $(SYS_DIR)/sc.h: $(SYS_UTIL_DIR)/mk_sc - $< > $@ + $(call filechk,$@) + +filechk_$(SYS_DIR)/thread.h := $(SYS_UTIL_DIR)/mk_thread $(SYS_DIR)/thread.h: $(SYS_UTIL_DIR)/mk_thread - $< > $@ + $(call filechk,$@) -$(SYS_UTIL_DIR)/mk_sc: FORCE ; - @$(call descend,$(SYS_UTIL_DIR),$@) +$(SYS_UTIL_DIR)/mk_sc: scripts/basic/fixdep include/config/MARKER FORCE ; + $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@ -$(SYS_UTIL_DIR)/mk_thread: $(ARCH_SYMLINKS) $(GEN_HEADERS) FORCE ; - @$(call descend,$(SYS_UTIL_DIR),$@) +$(SYS_UTIL_DIR)/mk_thread: $(ARCH_SYMLINKS) $(GEN_HEADERS) sys_prepare FORCE ; + $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@ $(SYS_UTIL_DIR): include/asm FORCE - @$(call descend,$@,) + $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) -sysclean : - rm -f $(SYS_HEADERS) +CLEAN_FILES += $(SYS_HEADERS) diff -puN arch/um/Makefile-skas~Main-uml-patch-no-skas arch/um/Makefile-skas --- uml-linux-2.6.7/arch/um/Makefile-skas~Main-uml-patch-no-skas 2004-06-29 21:02:55.633301208 +0200 +++ uml-linux-2.6.7-paolo/arch/um/Makefile-skas 2004-06-29 21:02:55.750283424 +0200 @@ -14,7 +14,7 @@ MODE_INCLUDE += -I$(TOPDIR)/$(ARCH_DIR)/ LINK_SKAS = -Wl,-rpath,/lib LD_SCRIPT_SKAS = dyn.lds.s -GEN_HEADERS += $(ARCH_DIR)/kernel/skas/include/skas_ptregs.h +GEN_HEADERS += $(TOPDIR)/$(ARCH_DIR)/include/skas_ptregs.h -$(ARCH_DIR)/kernel/skas/include/skas_ptregs.h : - $(MAKE) -C $(ARCH_DIR)/kernel/skas include/skas_ptregs.h +$(TOPDIR)/$(ARCH_DIR)/include/skas_ptregs.h : + $(Q)$(MAKE) $(build)=$(ARCH_DIR)/kernel/skas $@ diff -puN arch/um/os-Linux/drivers/ethertap_kern.c~Main-uml-patch-no-skas arch/um/os-Linux/drivers/ethertap_kern.c --- uml-linux-2.6.7/arch/um/os-Linux/drivers/ethertap_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.634301056 +0200 +++ uml-linux-2.6.7-paolo/arch/um/os-Linux/drivers/ethertap_kern.c 2004-06-29 21:02:55.751283272 +0200 @@ -8,7 +8,6 @@ #include "linux/init.h" #include "linux/netdevice.h" #include "linux/etherdevice.h" -#include "linux/init.h" #include "net_kern.h" #include "net_user.h" #include "etap.h" diff -puN arch/um/os-Linux/drivers/ethertap_user.c~Main-uml-patch-no-skas arch/um/os-Linux/drivers/ethertap_user.c --- uml-linux-2.6.7/arch/um/os-Linux/drivers/ethertap_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.635300904 +0200 +++ uml-linux-2.6.7-paolo/arch/um/os-Linux/drivers/ethertap_user.c 2004-06-29 21:02:55.751283272 +0200 @@ -8,7 +8,6 @@ #include #include #include -#include #include #include #include @@ -42,13 +41,14 @@ static void etap_change(int op, unsigned { struct addr_change change; void *output; + int n; change.what = op; memcpy(change.addr, addr, sizeof(change.addr)); memcpy(change.netmask, netmask, sizeof(change.netmask)); - if(write(fd, &change, sizeof(change)) != sizeof(change)) - printk("etap_change - request failed, errno = %d\n", - errno); + n = os_write_file(fd, &change, sizeof(change)); + if(n != sizeof(change)) + printk("etap_change - request failed, err = %d\n", -n); output = um_kmalloc(page_size()); if(output == NULL) printk("etap_change : Failed to allocate output buffer\n"); @@ -82,15 +82,15 @@ static void etap_pre_exec(void *arg) struct etap_pre_exec_data *data = arg; dup2(data->control_remote, 1); - close(data->data_me); - close(data->control_me); + os_close_file(data->data_me); + os_close_file(data->control_me); } static int etap_tramp(char *dev, char *gate, int control_me, int control_remote, int data_me, int data_remote) { struct etap_pre_exec_data pe_data; - int pid, status, err; + int pid, status, err, n; char version_buf[sizeof("nnnnn\0")]; char data_fd_buf[sizeof("nnnnnn\0")]; char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")]; @@ -114,21 +114,21 @@ static int etap_tramp(char *dev, char *g pe_data.data_me = data_me; pid = run_helper(etap_pre_exec, &pe_data, args, NULL); - if(pid < 0) err = errno; - close(data_remote); - close(control_remote); - if(read(control_me, &c, sizeof(c)) != sizeof(c)){ - printk("etap_tramp : read of status failed, errno = %d\n", - errno); - return(EINVAL); + if(pid < 0) err = pid; + os_close_file(data_remote); + os_close_file(control_remote); + n = os_read_file(control_me, &c, sizeof(c)); + if(n != sizeof(c)){ + printk("etap_tramp : read of status failed, err = %d\n", -n); + return(-EINVAL); } if(c != 1){ printk("etap_tramp : uml_net failed\n"); - err = EINVAL; - if(waitpid(pid, &status, 0) < 0) err = errno; - else if(!WIFEXITED(status) || (WEXITSTATUS(status) != 1)){ + err = -EINVAL; + if(waitpid(pid, &status, 0) < 0) + err = -errno; + else if(!WIFEXITED(status) || (WEXITSTATUS(status) != 1)) printk("uml_net didn't exit with status 1\n"); - } } return(err); } @@ -143,14 +143,14 @@ static int etap_open(void *data) if(err) return(err); err = os_pipe(data_fds, 0, 0); - if(err){ - printk("data os_pipe failed - errno = %d\n", -err); + if(err < 0){ + printk("data os_pipe failed - err = %d\n", -err); return(err); } err = os_pipe(control_fds, 1, 0); - if(err){ - printk("control os_pipe failed - errno = %d\n", -err); + if(err < 0){ + printk("control os_pipe failed - err = %d\n", -err); return(err); } @@ -167,9 +167,9 @@ static int etap_open(void *data) kfree(output); } - if(err != 0){ - printk("etap_tramp failed - errno = %d\n", err); - return(-err); + if(err < 0){ + printk("etap_tramp failed - err = %d\n", -err); + return(err); } pri->data_fd = data_fds[0]; @@ -183,11 +183,11 @@ static void etap_close(int fd, void *dat struct ethertap_data *pri = data; iter_addresses(pri->dev, etap_close_addr, &pri->control_fd); - close(fd); + os_close_file(fd); os_shutdown_socket(pri->data_fd, 1, 1); - close(pri->data_fd); + os_close_file(pri->data_fd); pri->data_fd = -1; - close(pri->control_fd); + os_close_file(pri->control_fd); pri->control_fd = -1; } diff -puN arch/um/os-Linux/drivers/tuntap_user.c~Main-uml-patch-no-skas arch/um/os-Linux/drivers/tuntap_user.c --- uml-linux-2.6.7/arch/um/os-Linux/drivers/tuntap_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.637300600 +0200 +++ uml-linux-2.6.7-paolo/arch/um/os-Linux/drivers/tuntap_user.c 2004-06-29 21:02:55.752283120 +0200 @@ -8,7 +8,6 @@ #include #include #include -#include #include #include #include @@ -61,7 +60,7 @@ static void tuntap_pre_exec(void *arg) struct tuntap_pre_exec_data *data = arg; dup2(data->stdout, 1); - close(data->close_me); + os_close_file(data->close_me); } static int tuntap_open_tramp(char *gate, int *fd_out, int me, int remote, @@ -86,7 +85,7 @@ static int tuntap_open_tramp(char *gate, if(pid < 0) return(-pid); - close(remote); + os_close_file(remote); msg.msg_name = NULL; msg.msg_namelen = 0; @@ -107,19 +106,19 @@ static int tuntap_open_tramp(char *gate, if(n < 0){ printk("tuntap_open_tramp : recvmsg failed - errno = %d\n", errno); - return(errno); + return(-errno); } waitpid(pid, NULL, 0); cmsg = CMSG_FIRSTHDR(&msg); if(cmsg == NULL){ printk("tuntap_open_tramp : didn't receive a message\n"); - return(EINVAL); + return(-EINVAL); } if((cmsg->cmsg_level != SOL_SOCKET) || (cmsg->cmsg_type != SCM_RIGHTS)){ printk("tuntap_open_tramp : didn't receive a descriptor\n"); - return(EINVAL); + return(-EINVAL); } *fd_out = ((int *) CMSG_DATA(cmsg))[0]; return(0); @@ -133,27 +132,29 @@ static int tuntap_open(void *data) int err, fds[2], len, used; err = tap_open_common(pri->dev, pri->gate_addr); - if(err) return(err); + if(err < 0) + return(err); if(pri->fixed_config){ - if((pri->fd = open("/dev/net/tun", O_RDWR)) < 0){ - printk("Failed to open /dev/net/tun, errno = %d\n", - errno); - return(-errno); + pri->fd = os_open_file("/dev/net/tun", of_rdwr(OPENFLAGS()), 0); + if(pri->fd < 0){ + printk("Failed to open /dev/net/tun, err = %d\n", + -pri->fd); + return(pri->fd); } memset(&ifr, 0, sizeof(ifr)); - ifr.ifr_flags = IFF_TAP; + ifr.ifr_flags = IFF_TAP | IFF_NO_PI; strlcpy(ifr.ifr_name, pri->dev_name, sizeof(ifr.ifr_name)); if(ioctl(pri->fd, TUNSETIFF, (void *) &ifr) < 0){ - printk("TUNSETIFF failed, errno = %d", errno); - close(pri->fd); + printk("TUNSETIFF failed, errno = %d\n", errno); + os_close_file(pri->fd); return(-errno); } } else { err = os_pipe(fds, 0, 0); - if(err){ - printk("tuntap_open : os_pipe failed - errno = %d\n", + if(err < 0){ + printk("tuntap_open : os_pipe failed - err = %d\n", -err); return(err); } @@ -166,19 +167,19 @@ static int tuntap_open(void *data) fds[1], buffer, len, &used); output = buffer; - if(err == 0){ - pri->dev_name = uml_strdup(buffer); - output += IFNAMSIZ; - printk(output); - free_output_buffer(buffer); - } - else { - printk(output); + if(err < 0) { + printk("%s", output); free_output_buffer(buffer); - printk("tuntap_open_tramp failed - errno = %d\n", err); - return(-err); + printk("tuntap_open_tramp failed - err = %d\n", -err); + return(err); } - close(fds[0]); + + pri->dev_name = uml_strdup(buffer); + output += IFNAMSIZ; + printk("%s", output); + free_output_buffer(buffer); + + os_close_file(fds[0]); iter_addresses(pri->dev, open_addr, pri->dev_name); } @@ -191,7 +192,7 @@ static void tuntap_close(int fd, void *d if(!pri->fixed_config) iter_addresses(pri->dev, close_addr, pri->dev_name); - close(fd); + os_close_file(fd); pri->fd = -1; } diff -puN arch/um/os-Linux/file.c~Main-uml-patch-no-skas arch/um/os-Linux/file.c --- uml-linux-2.6.7/arch/um/os-Linux/file.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.638300448 +0200 +++ uml-linux-2.6.7-paolo/arch/um/os-Linux/file.c 2004-06-29 21:02:55.752283120 +0200 @@ -8,6 +8,8 @@ #include #include #include +#include +#include #include #include #include @@ -17,33 +19,235 @@ #include "user.h" #include "kern_util.h" -int os_file_type(char *file) +static void copy_stat(struct uml_stat *dst, struct stat64 *src) +{ + *dst = ((struct uml_stat) { + .ust_dev = src->st_dev, /* device */ + .ust_ino = src->st_ino, /* inode */ + .ust_mode = src->st_mode, /* protection */ + .ust_nlink = src->st_nlink, /* number of hard links */ + .ust_uid = src->st_uid, /* user ID of owner */ + .ust_gid = src->st_gid, /* group ID of owner */ + .ust_size = src->st_size, /* total size, in bytes */ + .ust_blksize = src->st_blksize, /* blocksize for filesys I/O */ + .ust_blocks = src->st_blocks, /* number of blocks allocated */ + .ust_atime = src->st_atime, /* time of last access */ + .ust_mtime = src->st_mtime, /* time of last modification */ + .ust_ctime = src->st_ctime, /* time of last change */ + }); +} + +int os_stat_fd(const int fd, struct uml_stat *ubuf) +{ + struct stat64 sbuf; + int err; + + do { + err = fstat64(fd, &sbuf); + } while((err < 0) && (errno == EINTR)) ; + + if(err < 0) + return(-errno); + + if(ubuf != NULL) + copy_stat(ubuf, &sbuf); + return(err); +} + +int os_stat_file(const char *file_name, struct uml_stat *ubuf) +{ + struct stat64 sbuf; + int err; + + do { + err = stat64(file_name, &sbuf); + } while((err < 0) && (errno == EINTR)) ; + + if(err < 0) + return(-errno); + + if(ubuf != NULL) + copy_stat(ubuf, &sbuf); + return(err); +} + +int os_access(const char* file, int mode) +{ + int amode, err; + + amode=(mode&OS_ACC_R_OK ? R_OK : 0) | (mode&OS_ACC_W_OK ? W_OK : 0) | + (mode&OS_ACC_X_OK ? X_OK : 0) | (mode&OS_ACC_F_OK ? F_OK : 0) ; + + err = access(file, amode); + if(err < 0) + return(-errno); + + return(0); +} + +void os_print_error(int error, const char* str) +{ + errno = error < 0 ? -error : error; + + perror(str); +} + +/* FIXME? required only by hostaudio (because it passes ioctls verbatim) */ +int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg) +{ + int err; + + err = ioctl(fd, cmd, arg); + if(err < 0) + return(-errno); + + return(err); +} + +int os_window_size(int fd, int *rows, int *cols) +{ + struct winsize size; + + if(ioctl(fd, TIOCGWINSZ, &size) < 0) + return(-errno); + + *rows = size.ws_row; + *cols = size.ws_col; + + return(0); +} + +int os_new_tty_pgrp(int fd, int pid) { - struct stat64 buf; + if(ioctl(fd, TIOCSCTTY, 0) < 0){ + printk("TIOCSCTTY failed, errno = %d\n", errno); + return(-errno); + } + + if(tcsetpgrp(fd, pid) < 0){ + printk("tcsetpgrp failed, errno = %d\n", errno); + return(-errno); + } + + return(0); +} + +/* FIXME: ensure namebuf in os_get_if_name is big enough */ +int os_get_ifname(int fd, char* namebuf) +{ + if(ioctl(fd, SIOCGIFNAME, namebuf) < 0) + return(-errno); + + return(0); +} + +int os_set_slip(int fd) +{ + int disc, sencap; + + disc = N_SLIP; + if(ioctl(fd, TIOCSETD, &disc) < 0){ + printk("Failed to set slip line discipline - " + "errno = %d\n", errno); + return(-errno); + } + + sencap = 0; + if(ioctl(fd, SIOCSIFENCAP, &sencap) < 0){ + printk("Failed to set slip encapsulation - " + "errno = %d\n", errno); + return(-errno); + } + + return(0); +} + +int os_set_owner(int fd, int pid) +{ + if(fcntl(fd, F_SETOWN, pid) < 0){ + int save_errno = errno; + + if(fcntl(fd, F_GETOWN, 0) != pid) + return(-save_errno); + } + + return(0); +} + +/* FIXME? moved wholesale from sigio_user.c to get fcntls out of that file */ +int os_sigio_async(int master, int slave) +{ + int flags; - if(stat64(file, &buf) == -1) + flags = fcntl(master, F_GETFL); + if(flags < 0) { + printk("fcntl F_GETFL failed, errno = %d\n", errno); return(-errno); + } + + if((fcntl(master, F_SETFL, flags | O_NONBLOCK | O_ASYNC) < 0) || + (fcntl(master, F_SETOWN, os_getpid()) < 0)){ + printk("fcntl F_SETFL or F_SETOWN failed, errno = %d\n", errno); + return(-errno); + } + + if((fcntl(slave, F_SETFL, flags | O_NONBLOCK) < 0)){ + printk("fcntl F_SETFL failed, errno = %d\n", errno); + return(-errno); + } - if(S_ISDIR(buf.st_mode)) return(OS_TYPE_DIR); - else if(S_ISLNK(buf.st_mode)) return(OS_TYPE_SYMLINK); - else if(S_ISCHR(buf.st_mode)) return(OS_TYPE_CHARDEV); - else if(S_ISBLK(buf.st_mode)) return(OS_TYPE_BLOCKDEV); - else if(S_ISFIFO(buf.st_mode)) return(OS_TYPE_FIFO); - else if(S_ISSOCK(buf.st_mode)) return(OS_TYPE_SOCK); + return(0); +} + +int os_mode_fd(int fd, int mode) +{ + int err; + + do { + err = fchmod(fd, mode); + } while((err < 0) && (errno==EINTR)) ; + + if(err < 0) + return(-errno); + + return(0); +} + +int os_file_type(char *file) +{ + struct uml_stat buf; + int err; + + err = os_stat_file(file, &buf); + if(err < 0) + return(err); + + if(S_ISDIR(buf.ust_mode)) return(OS_TYPE_DIR); + else if(S_ISLNK(buf.ust_mode)) return(OS_TYPE_SYMLINK); + else if(S_ISCHR(buf.ust_mode)) return(OS_TYPE_CHARDEV); + else if(S_ISBLK(buf.ust_mode)) return(OS_TYPE_BLOCKDEV); + else if(S_ISFIFO(buf.ust_mode)) return(OS_TYPE_FIFO); + else if(S_ISSOCK(buf.ust_mode)) return(OS_TYPE_SOCK); else return(OS_TYPE_FILE); } int os_file_mode(char *file, struct openflags *mode_out) { + int err; + *mode_out = OPENFLAGS(); - if(!access(file, W_OK)) *mode_out = of_write(*mode_out); - else if(errno != EACCES) - return(-errno); + err = os_access(file, OS_ACC_W_OK); + if((err < 0) && (err != -EACCES)) + return(err); - if(!access(file, R_OK)) *mode_out = of_read(*mode_out); - else if(errno != EACCES) - return(-errno); + *mode_out = of_write(*mode_out); + + err = os_access(file, OS_ACC_R_OK); + if((err < 0) && (err != -EACCES)) + return(err); + + *mode_out = of_read(*mode_out); return(0); } @@ -63,16 +267,14 @@ int os_open_file(char *file, struct open if(flags.e) f |= O_EXCL; fd = open64(file, f, mode); - if(fd < 0) return(-errno); - - if(flags.cl){ - if(fcntl(fd, F_SETFD, 1)){ - close(fd); - return(-errno); - } + if(fd < 0) + return(-errno); + + if(flags.cl && fcntl(fd, F_SETFD, 1)){ + os_close_file(fd); + return(-errno); } - return(fd); return(fd); } @@ -90,7 +292,7 @@ int os_connect_socket(char *name) err = connect(fd, (struct sockaddr *) &sock, sizeof(sock)); if(err) - return(err); + return(-errno); return(fd); } @@ -109,88 +311,162 @@ int os_seek_file(int fd, __u64 offset) return(0); } -int os_read_file(int fd, void *buf, int len) +static int fault_buffer(void *start, int len, + int (*copy_proc)(void *addr, void *buf, int len)) { - int n; + int page = getpagesize(), i; + char c; - /* Force buf into memory if it's not already. */ + for(i = 0; i < len; i += page){ + if((*copy_proc)(start + i, &c, sizeof(c))) + return(-EFAULT); + } + if((len % page) != 0){ + if((*copy_proc)(start + len - 1, &c, sizeof(c))) + return(-EFAULT); + } + return(0); +} - /* XXX This fails if buf is kernel memory */ -#ifdef notdef - if(copy_to_user_proc(buf, &c, sizeof(c))) - return(-EFAULT); -#endif +static int file_io(int fd, void *buf, int len, + int (*io_proc)(int fd, void *buf, int len), + int (*copy_user_proc)(void *addr, void *buf, int len)) +{ + int n, err; + + do { + n = (*io_proc)(fd, buf, len); + if((n < 0) && (errno == EFAULT)){ + err = fault_buffer(buf, len, copy_user_proc); + if(err) + return(err); + n = (*io_proc)(fd, buf, len); + } + } while((n < 0) && (errno == EINTR)); - n = read(fd, buf, len); if(n < 0) return(-errno); return(n); } -int os_write_file(int fd, void *buf, int count) +int os_read_file(int fd, void *buf, int len) { - int n; - - /* Force buf into memory if it's not already. */ - - /* XXX This fails if buf is kernel memory */ -#ifdef notdef - if(copy_to_user_proc(buf, buf, buf[0])) - return(-EFAULT); -#endif + return(file_io(fd, buf, len, (int (*)(int, void *, int)) read, + copy_from_user_proc)); +} - n = write(fd, buf, count); - if(n < 0) - return(-errno); - return(n); +int os_write_file(int fd, const void *buf, int len) +{ + return(file_io(fd, (void *) buf, len, + (int (*)(int, void *, int)) write, copy_to_user_proc)); } int os_file_size(char *file, long long *size_out) { - struct stat64 buf; + struct uml_stat buf; + int err; - if(stat64(file, &buf) == -1){ - printk("Couldn't stat \"%s\" : errno = %d\n", file, errno); - return(-errno); + err = os_stat_file(file, &buf); + if(err < 0){ + printk("Couldn't stat \"%s\" : err = %d\n", file, -err); + return(err); } - if(S_ISBLK(buf.st_mode)){ + + if(S_ISBLK(buf.ust_mode)){ int fd, blocks; - if((fd = open64(file, O_RDONLY)) < 0){ - printk("Couldn't open \"%s\", errno = %d\n", file, - errno); - return(-errno); + fd = os_open_file(file, of_read(OPENFLAGS()), 0); + if(fd < 0){ + printk("Couldn't open \"%s\", errno = %d\n", file, -fd); + return(fd); } if(ioctl(fd, BLKGETSIZE, &blocks) < 0){ printk("Couldn't get the block size of \"%s\", " "errno = %d\n", file, errno); - close(fd); - return(-errno); + err = -errno; + os_close_file(fd); + return(err); } *size_out = ((long long) blocks) * 512; - close(fd); + os_close_file(fd); return(0); } - *size_out = buf.st_size; + *size_out = buf.ust_size; + return(0); +} + +int os_file_modtime(char *file, unsigned long *modtime) +{ + struct uml_stat buf; + int err; + + err = os_stat_file(file, &buf); + if(err < 0){ + printk("Couldn't stat \"%s\" : err = %d\n", file, -err); + return(err); + } + + *modtime = buf.ust_mtime; return(0); } +int os_get_exec_close(int fd, int* close_on_exec) +{ + int ret; + + do { + ret = fcntl(fd, F_GETFD); + } while((ret < 0) && (errno == EINTR)) ; + + if(ret < 0) + return(-errno); + + *close_on_exec = (ret&FD_CLOEXEC) ? 1 : 0; + return(ret); +} + +int os_set_exec_close(int fd, int close_on_exec) +{ + int flag, err; + + if(close_on_exec) flag = FD_CLOEXEC; + else flag = 0; + + do { + err = fcntl(fd, F_SETFD, flag); + } while((err < 0) && (errno == EINTR)) ; + + if(err < 0) + return(-errno); + return(err); +} + int os_pipe(int *fds, int stream, int close_on_exec) { int err, type = stream ? SOCK_STREAM : SOCK_DGRAM; err = socketpair(AF_UNIX, type, 0, fds); - if(err) + if(err < 0) return(-errno); if(!close_on_exec) return(0); - if((fcntl(fds[0], F_SETFD, 1) < 0) || (fcntl(fds[1], F_SETFD, 1) < 0)) - printk("os_pipe : Setting FD_CLOEXEC failed, errno = %d", - errno); + err = os_set_exec_close(fds[0], 1); + if(err < 0) + goto error; + + err = os_set_exec_close(fds[1], 1); + if(err < 0) + goto error; return(0); + + error: + printk("os_pipe : Setting FD_CLOEXEC failed, err = %d\n", -err); + os_close_file(fds[1]); + os_close_file(fds[0]); + return(err); } int os_set_fd_async(int fd, int owner) @@ -270,7 +546,7 @@ int os_shutdown_socket(int fd, int r, in return(-EINVAL); } err = shutdown(fd, what); - if(err) + if(err < 0) return(-errno); return(0); } @@ -315,7 +591,7 @@ int os_rcv_fd(int fd, int *helper_pid_ou return(new); } -int create_unix_socket(char *file, int len) +int os_create_unix_socket(char *file, int len, int close_on_exec) { struct sockaddr_un addr; int sock, err; @@ -327,6 +603,13 @@ int create_unix_socket(char *file, int l return(-errno); } + if(close_on_exec) { + err = os_set_exec_close(sock, 1); + if(err < 0) + printk("create_unix_socket : close_on_exec failed, " + "err = %d", -err); + } + addr.sun_family = AF_UNIX; /* XXX Be more careful about overflow */ @@ -334,14 +617,45 @@ int create_unix_socket(char *file, int l err = bind(sock, (struct sockaddr *) &addr, sizeof(addr)); if (err < 0){ - printk("create_listening_socket - bind failed, errno = %d\n", - errno); + printk("create_listening_socket at '%s' - bind failed, " + "errno = %d\n", file, errno); return(-errno); } return(sock); } +void os_flush_stdout(void) +{ + fflush(stdout); +} + +int os_lock_file(int fd, int excl) +{ + int type = excl ? F_WRLCK : F_RDLCK; + struct flock lock = ((struct flock) { .l_type = type, + .l_whence = SEEK_SET, + .l_start = 0, + .l_len = 0 } ); + int err, save; + + err = fcntl(fd, F_SETLK, &lock); + if(!err) + goto out; + + save = -errno; + err = fcntl(fd, F_GETLK, &lock); + if(err){ + err = -errno; + goto out; + } + + printk("F_SETLK failed, file already locked by pid %d\n", lock.l_pid); + err = save; + out: + return(err); +} + /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff -puN arch/um/os-Linux/Makefile~Main-uml-patch-no-skas arch/um/os-Linux/Makefile --- uml-linux-2.6.7/arch/um/os-Linux/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.639300296 +0200 +++ uml-linux-2.6.7-paolo/arch/um/os-Linux/Makefile 2004-06-29 21:02:55.752283120 +0200 @@ -3,13 +3,9 @@ # Licensed under the GPL # -obj-y = file.o process.o tty.o drivers/ +obj-y = file.o process.o tty.o user_syms.o drivers/ USER_OBJS := $(foreach file,file.o process.o tty.o,$(obj)/$(file)) $(USER_OBJS) : %.o: %.c $(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $< - -clean : - -archmrproper: diff -puN arch/um/os-Linux/process.c~Main-uml-patch-no-skas arch/um/os-Linux/process.c --- uml-linux-2.6.7/arch/um/os-Linux/process.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.640300144 +0200 +++ uml-linux-2.6.7-paolo/arch/um/os-Linux/process.c 2004-06-29 21:02:55.753282968 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2002 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -7,32 +7,37 @@ #include #include #include +#include #include #include #include "os.h" #include "user.h" +#define ARBITRARY_ADDR -1 +#define FAILURE_PID -1 + unsigned long os_process_pc(int pid) { char proc_stat[sizeof("/proc/#####/stat\0")], buf[256]; unsigned long pc; - int fd; + int fd, err; sprintf(proc_stat, "/proc/%d/stat", pid); fd = os_open_file(proc_stat, of_read(OPENFLAGS()), 0); if(fd < 0){ - printk("os_process_pc - couldn't open '%s', errno = %d\n", - proc_stat, errno); - return(-1); + printk("os_process_pc - couldn't open '%s', err = %d\n", + proc_stat, -fd); + return(ARBITRARY_ADDR); } - if(read(fd, buf, sizeof(buf)) < 0){ - printk("os_process_pc - couldn't read '%s', errno = %d\n", - proc_stat, errno); - close(fd); - return(-1); + err = os_read_file(fd, buf, sizeof(buf)); + if(err < 0){ + printk("os_process_pc - couldn't read '%s', err = %d\n", + proc_stat, -err); + os_close_file(fd); + return(ARBITRARY_ADDR); } - close(fd); - pc = -1; + os_close_file(fd); + pc = ARBITRARY_ADDR; if(sscanf(buf, "%*d %*s %*c %*d %*d %*d %*d %*d %*d %*d %*d " "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d " "%*d %*d %*d %*d %ld", &pc) != 1){ @@ -52,22 +57,23 @@ int os_process_parent(int pid) snprintf(stat, sizeof(stat), "/proc/%d/stat", pid); fd = os_open_file(stat, of_read(OPENFLAGS()), 0); if(fd < 0){ - printk("Couldn't open '%s', errno = %d\n", stat, -fd); - return(-1); + printk("Couldn't open '%s', err = %d\n", stat, -fd); + return(FAILURE_PID); } - n = read(fd, data, sizeof(data)); - close(fd); + n = os_read_file(fd, data, sizeof(data)); + os_close_file(fd); if(n < 0){ - printk("Couldn't read '%s', errno = %d\n", stat); - return(-1); + printk("Couldn't read '%s', err = %d\n", stat, -n); + return(FAILURE_PID); } - parent = -1; + parent = FAILURE_PID; /* XXX This will break if there is a space in the command */ n = sscanf(data, "%*d %*s %*c %d", &parent); - if(n != 1) printk("Failed to scan '%s'\n", data); + if(n != 1) + printk("Failed to scan '%s'\n", data); return(parent); } @@ -87,7 +93,8 @@ void os_kill_process(int pid, int reap_c void os_usr1_process(int pid) { - kill(pid, SIGUSR1); + syscall(__NR_tkill, pid, SIGUSR1); + /* kill(pid, SIGUSR1); */ } int os_getpid(void) @@ -95,7 +102,7 @@ int os_getpid(void) return(getpid()); } -int os_map_memory(void *virt, int fd, unsigned long off, unsigned long len, +int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len, int r, int w, int x) { void *loc; @@ -104,8 +111,8 @@ int os_map_memory(void *virt, int fd, un prot = (r ? PROT_READ : 0) | (w ? PROT_WRITE : 0) | (x ? PROT_EXEC : 0); - loc = mmap((void *) virt, len, prot, MAP_SHARED | MAP_FIXED, - fd, off); + loc = mmap64((void *) virt, len, prot, MAP_SHARED | MAP_FIXED, + fd, off); if(loc == MAP_FAILED) return(-errno); return(0); @@ -126,7 +133,8 @@ int os_unmap_memory(void *addr, int len) int err; err = munmap(addr, len); - if(err < 0) return(-errno); + if(err < 0) + return(-errno); return(0); } diff -puN arch/um/os-Linux/tty.c~Main-uml-patch-no-skas arch/um/os-Linux/tty.c --- uml-linux-2.6.7/arch/um/os-Linux/tty.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.641299992 +0200 +++ uml-linux-2.6.7-paolo/arch/um/os-Linux/tty.c 2004-06-29 21:02:55.753282968 +0200 @@ -28,10 +28,10 @@ int get_pty(void) struct grantpt_info info; int fd; - if((fd = os_open_file("/dev/ptmx", of_rdwr(OPENFLAGS()), 0)) < 0){ - printk("get_pty : Couldn't open /dev/ptmx - errno = %d\n", - errno); - return(-1); + fd = os_open_file("/dev/ptmx", of_rdwr(OPENFLAGS()), 0); + if(fd < 0){ + printk("get_pty : Couldn't open /dev/ptmx - err = %d\n", -fd); + return(fd); } info.fd = fd; @@ -39,7 +39,7 @@ int get_pty(void) if(info.res < 0){ printk("get_pty : Couldn't grant pty - errno = %d\n", - info.err); + -info.err); return(-1); } if(unlockpt(fd) < 0){ diff -puN /dev/null arch/um/os-Linux/user_syms.c --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/os-Linux/user_syms.c 2004-06-29 21:02:55.753282968 +0200 @@ -0,0 +1,88 @@ +#include "linux/types.h" +#include "linux/module.h" + +/* Some of this are builtin function (some are not but could in the future), + * so I *must* declare good prototypes for them and then EXPORT them. + * The kernel code uses the macro defined by include/linux/string.h, + * so I undef macros; the userspace code does not include that and I + * add an EXPORT for the glibc one.*/ + +#undef strlen +#undef strstr +#undef memcpy +#undef memset + +extern size_t strlen(const char *); +extern void *memcpy(void *, const void *, size_t); +extern void *memset(void *, int, size_t); +extern int printf(const char *, ...); + +EXPORT_SYMBOL(strlen); +EXPORT_SYMBOL(memcpy); +EXPORT_SYMBOL(memset); +EXPORT_SYMBOL(printf); + +EXPORT_SYMBOL(strstr); + +/* Here, instead, I can provide a fake prototype. Yes, someone cares: genksyms. + * However, the modules will use the CRC defined *here*, no matter if it is + * good; so the versions of these symbols will always match + */ +#define EXPORT_SYMBOL_PROTO(sym) \ + int sym(void); \ + EXPORT_SYMBOL(sym); + +EXPORT_SYMBOL_PROTO(__errno_location); + +EXPORT_SYMBOL_PROTO(access); +EXPORT_SYMBOL_PROTO(open); +EXPORT_SYMBOL_PROTO(open64); +EXPORT_SYMBOL_PROTO(close); +EXPORT_SYMBOL_PROTO(read); +EXPORT_SYMBOL_PROTO(write); +EXPORT_SYMBOL_PROTO(dup2); +EXPORT_SYMBOL_PROTO(__xstat); +EXPORT_SYMBOL_PROTO(__lxstat); +EXPORT_SYMBOL_PROTO(__lxstat64); +EXPORT_SYMBOL_PROTO(lseek); +EXPORT_SYMBOL_PROTO(lseek64); +EXPORT_SYMBOL_PROTO(chown); +EXPORT_SYMBOL_PROTO(truncate); +EXPORT_SYMBOL_PROTO(utime); +EXPORT_SYMBOL_PROTO(chmod); +EXPORT_SYMBOL_PROTO(rename); +EXPORT_SYMBOL_PROTO(__xmknod); + +EXPORT_SYMBOL_PROTO(symlink); +EXPORT_SYMBOL_PROTO(link); +EXPORT_SYMBOL_PROTO(unlink); +EXPORT_SYMBOL_PROTO(readlink); + +EXPORT_SYMBOL_PROTO(mkdir); +EXPORT_SYMBOL_PROTO(rmdir); +EXPORT_SYMBOL_PROTO(opendir); +EXPORT_SYMBOL_PROTO(readdir); +EXPORT_SYMBOL_PROTO(closedir); +EXPORT_SYMBOL_PROTO(seekdir); +EXPORT_SYMBOL_PROTO(telldir); + +EXPORT_SYMBOL_PROTO(ioctl); + +EXPORT_SYMBOL_PROTO(pread64); +EXPORT_SYMBOL_PROTO(pwrite64); + +EXPORT_SYMBOL_PROTO(statfs); +EXPORT_SYMBOL_PROTO(statfs64); + +EXPORT_SYMBOL_PROTO(getuid); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN arch/um/sys-i386/bugs.c~Main-uml-patch-no-skas arch/um/sys-i386/bugs.c --- uml-linux-2.6.7/arch/um/sys-i386/bugs.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.642299840 +0200 +++ uml-linux-2.6.7-paolo/arch/um/sys-i386/bugs.c 2004-06-29 21:02:55.754282816 +0200 @@ -4,20 +4,21 @@ */ #include -#include #include #include #include +#include #include "kern_util.h" #include "user.h" #include "sysdep/ptrace.h" #include "task.h" +#include "os.h" #define MAXTOKEN 64 /* Set during early boot */ -int cpu_has_cmov = 1; -int cpu_has_xmm = 0; +int host_has_cmov = 1; +int host_has_xmm = 0; static char token(int fd, char *buf, int len, char stop) { @@ -27,13 +28,15 @@ static char token(int fd, char *buf, int ptr = buf; end = &buf[len]; do { - n = read(fd, ptr, sizeof(*ptr)); + n = os_read_file(fd, ptr, sizeof(*ptr)); c = *ptr++; - if(n == 0) return(0); - else if(n != sizeof(*ptr)){ - printk("Reading /proc/cpuinfo failed, " - "errno = %d\n", errno); - return(-errno); + if(n != sizeof(*ptr)){ + if(n == 0) return(0); + printk("Reading /proc/cpuinfo failed, err = %d\n", -n); + if(n < 0) + return(n); + else + return(-EIO); } } while((c != '\n') && (c != stop) && (ptr < end)); @@ -45,45 +48,79 @@ static char token(int fd, char *buf, int return(c); } -static int check_cpu_feature(char *feature, int *have_it) +static int find_cpuinfo_line(int fd, char *key, char *scratch, int len) { - char buf[MAXTOKEN], c; - int fd, len = sizeof(buf)/sizeof(buf[0]), n; - - printk("Checking for host processor %s support...", feature); - fd = open("/proc/cpuinfo", O_RDONLY); - if(fd < 0){ - printk("Couldn't open /proc/cpuinfo, errno = %d\n", errno); - return(0); - } + int n; + char c; - *have_it = 0; - buf[len - 1] = '\0'; + scratch[len - 1] = '\0'; while(1){ - c = token(fd, buf, len - 1, ':'); - if(c <= 0) goto out; + c = token(fd, scratch, len - 1, ':'); + if(c <= 0) + return(0); else if(c != ':'){ printk("Failed to find ':' in /proc/cpuinfo\n"); - goto out; + return(0); } - if(!strncmp(buf, "flags", strlen("flags"))) break; + if(!strncmp(scratch, key, strlen(key))) + return(1); do { - n = read(fd, &c, sizeof(c)); + n = os_read_file(fd, &c, sizeof(c)); if(n != sizeof(c)){ printk("Failed to find newline in " - "/proc/cpuinfo, n = %d, errno = %d\n", - n, errno); - goto out; + "/proc/cpuinfo, err = %d\n", -n); + return(0); } } while(c != '\n'); } + return(0); +} + +int cpu_feature(char *what, char *buf, int len) +{ + int fd, ret = 0; + + fd = os_open_file("/proc/cpuinfo", of_read(OPENFLAGS()), 0); + if(fd < 0){ + printk("Couldn't open /proc/cpuinfo, err = %d\n", -fd); + return(0); + } + + if(!find_cpuinfo_line(fd, what, buf, len)){ + printk("Couldn't find '%s' line in /proc/cpuinfo\n", what); + goto out_close; + } + + token(fd, buf, len, '\n'); + ret = 1; + + out_close: + os_close_file(fd); + return(ret); +} + +static int check_cpu_flag(char *feature, int *have_it) +{ + char buf[MAXTOKEN], c; + int fd, len = sizeof(buf)/sizeof(buf[0]); + + printk("Checking for host processor %s support...", feature); + fd = os_open_file("/proc/cpuinfo", of_read(OPENFLAGS()), 0); + if(fd < 0){ + printk("Couldn't open /proc/cpuinfo, err = %d\n", -fd); + return(0); + } + + *have_it = 0; + if(!find_cpuinfo_line(fd, "flags", buf, sizeof(buf) / sizeof(buf[0]))) + goto out; c = token(fd, buf, len - 1, ' '); if(c < 0) goto out; else if(c != ' '){ - printk("Failed to find ':' in /proc/cpuinfo\n"); + printk("Failed to find ' ' in /proc/cpuinfo\n"); goto out; } @@ -100,21 +137,48 @@ static int check_cpu_feature(char *featu out: if(*have_it == 0) printk("No\n"); else if(*have_it == 1) printk("Yes\n"); - close(fd); + os_close_file(fd); return(1); } +#if 0 /* This doesn't work in tt mode, plus it's causing compilation problems + * for some people. + */ +static void disable_lcall(void) +{ + struct modify_ldt_ldt_s ldt; + int err; + + bzero(&ldt, sizeof(ldt)); + ldt.entry_number = 7; + ldt.base_addr = 0; + ldt.limit = 0; + err = modify_ldt(1, &ldt, sizeof(ldt)); + if(err) + printk("Failed to disable lcall7 - errno = %d\n", errno); +} +#endif + +void arch_init_thread(void) +{ +#if 0 + disable_lcall(); +#endif +} + void arch_check_bugs(void) { int have_it; - if(access("/proc/cpuinfo", R_OK)){ + if(os_access("/proc/cpuinfo", OS_ACC_R_OK) < 0){ printk("/proc/cpuinfo not available - skipping CPU capability " "checks\n"); return; } - if(check_cpu_feature("cmov", &have_it)) cpu_has_cmov = have_it; - if(check_cpu_feature("xmm", &have_it)) cpu_has_xmm = have_it; + if(check_cpu_flag("cmov", &have_it)) + host_has_cmov = have_it; + if(check_cpu_flag("xmm", &have_it)) + host_has_xmm = have_it; } int arch_handle_signal(int sig, union uml_pt_regs *regs) @@ -130,18 +194,18 @@ int arch_handle_signal(int sig, union um if((*((char *) ip) != 0x0f) || ((*((char *) (ip + 1)) & 0xf0) != 0x40)) return(0); - if(cpu_has_cmov == 0) + if(host_has_cmov == 0) panic("SIGILL caused by cmov, which this processor doesn't " "implement, boot a filesystem compiled for older " "processors"); - else if(cpu_has_cmov == 1) + else if(host_has_cmov == 1) panic("SIGILL caused by cmov, which this processor claims to " "implement"); - else if(cpu_has_cmov == -1) + else if(host_has_cmov == -1) panic("SIGILL caused by cmov, couldn't tell if this processor " "implements it, boot a filesystem compiled for older " "processors"); - else panic("Bad value for cpu_has_cmov (%d)", cpu_has_cmov); + else panic("Bad value for host_has_cmov (%d)", host_has_cmov); return(0); } diff -L arch/um/sys-i386/extable.c -puN arch/um/sys-i386/extable.c~Main-uml-patch-no-skas /dev/null --- uml-linux-2.6.7/arch/um/sys-i386/extable.c +++ /dev/null 1970-01-01 01:00:00.000000000 +0100 @@ -1,30 +0,0 @@ -/* - * linux/arch/i386/mm/extable.c - */ - -#include -#include -#include -#include - -/* Simple binary search */ -const struct exception_table_entry * -search_extable(const struct exception_table_entry *first, - const struct exception_table_entry *last, - unsigned long value) -{ - while (first <= last) { - const struct exception_table_entry *mid; - long diff; - - mid = (last - first) / 2 + first; - diff = mid->insn - value; - if (diff == 0) - return mid; - else if (diff < 0) - first = mid+1; - else - last = mid-1; - } - return NULL; -} diff -puN arch/um/sys-i386/fault.c~Main-uml-patch-no-skas arch/um/sys-i386/fault.c --- uml-linux-2.6.7/arch/um/sys-i386/fault.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.645299384 +0200 +++ uml-linux-2.6.7-paolo/arch/um/sys-i386/fault.c 2004-06-29 21:02:55.754282816 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2002 - 2004 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -7,16 +7,24 @@ #include "sysdep/ptrace.h" #include "sysdep/sigcontext.h" -extern unsigned long search_exception_table(unsigned long addr); +/* These two are from asm-um/uaccess.h and linux/module.h, check them. */ +struct exception_table_entry +{ + unsigned long insn; + unsigned long fixup; +}; +const struct exception_table_entry *search_exception_tables(unsigned long add); + +/* Compare this to arch/i386/mm/extable.c:fixup_exception() */ int arch_fixup(unsigned long address, void *sc_ptr) { struct sigcontext *sc = sc_ptr; - unsigned long fixup; + const struct exception_table_entry *fixup; fixup = search_exception_tables(address); if(fixup != 0){ - sc->eip = fixup; + sc->eip = fixup->fixup; return(1); } return(0); diff -puN arch/um/sys-i386/Makefile~Main-uml-patch-no-skas arch/um/sys-i386/Makefile --- uml-linux-2.6.7/arch/um/sys-i386/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.646299232 +0200 +++ uml-linux-2.6.7-paolo/arch/um/sys-i386/Makefile 2004-06-29 21:02:55.755282664 +0200 @@ -1,7 +1,8 @@ -obj-y = bugs.o checksum.o extable.o fault.o ksyms.o ldt.o module.o \ - ptrace.o ptrace_user.o semaphore.o sigcontext.o syscalls.o sysrq.o +obj-y = bugs.o checksum.o fault.o ksyms.o ldt.o ptrace.o ptrace_user.o \ + semaphore.o sigcontext.o syscalls.o sysrq.o time.o obj-$(CONFIG_HIGHMEM) += highmem.o +obj-$(CONFIG_MODULES) += module.o USER_OBJS := bugs.o ptrace_user.o sigcontext.o fault.o USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file)) @@ -9,6 +10,8 @@ USER_OBJS := $(foreach file,$(USER_OBJS) SYMLINKS = semaphore.c highmem.c module.c SYMLINKS := $(foreach f,$(SYMLINKS),$(src)/$f) +clean-files := $(SYMLINKS) + semaphore.c-dir = kernel highmem.c-dir = mm module.c-dir = kernel @@ -24,19 +27,4 @@ $(USER_OBJS) : %.o: %.c $(SYMLINKS): $(call make_link,$@) -clean: - $(MAKE) -C util clean - -fastdep: - -dep: - -archmrproper: - rm -f $(SYMLINKS) - -archclean: - -archdep: - -modules: - +subdir- := util diff -puN arch/um/sys-i386/ptrace_user.c~Main-uml-patch-no-skas arch/um/sys-i386/ptrace_user.c --- uml-linux-2.6.7/arch/um/sys-i386/ptrace_user.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.647299080 +0200 +++ uml-linux-2.6.7-paolo/arch/um/sys-i386/ptrace_user.c 2004-06-29 21:02:55.755282664 +0200 @@ -39,10 +39,10 @@ static void write_debugregs(int pid, uns nregs = sizeof(dummy->u_debugreg)/sizeof(dummy->u_debugreg[0]); for(i = 0; i < nregs; i++){ if((i == 4) || (i == 5)) continue; - if(ptrace(PTRACE_POKEUSR, pid, &dummy->u_debugreg[i], + if(ptrace(PTRACE_POKEUSER, pid, &dummy->u_debugreg[i], regs[i]) < 0) - printk("write_debugregs - ptrace failed, " - "errno = %d\n", errno); + printk("write_debugregs - ptrace failed on " + "register %d, errno = %d\n", errno); } } @@ -54,7 +54,7 @@ static void read_debugregs(int pid, unsi dummy = NULL; nregs = sizeof(dummy->u_debugreg)/sizeof(dummy->u_debugreg[0]); for(i = 0; i < nregs; i++){ - regs[i] = ptrace(PTRACE_PEEKUSR, pid, + regs[i] = ptrace(PTRACE_PEEKUSER, pid, &dummy->u_debugreg[i], 0); } } diff -puN /dev/null arch/um/sys-i386/time.c --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/arch/um/sys-i386/time.c 2004-06-29 21:02:55.755282664 +0200 @@ -0,0 +1,24 @@ +/* + * sys-i386/time.c + * Created 25.9.2002 Sapan Bhatia + * + */ + +unsigned long long time_stamp(void) +{ + unsigned long low, high; + + asm("rdtsc" : "=a" (low), "=d" (high)); + return((((unsigned long long) high) << 32) + low); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN arch/um/sys-i386/util/Makefile~Main-uml-patch-no-skas arch/um/sys-i386/util/Makefile --- uml-linux-2.6.7/arch/um/sys-i386/util/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.648298928 +0200 +++ uml-linux-2.6.7-paolo/arch/um/sys-i386/util/Makefile 2004-06-29 21:02:55.755282664 +0200 @@ -1,15 +1,10 @@ +host-progs := mk_sc mk_thread +always := $(host-progs) -host-progs := mk_sc -always := $(host-progs) mk_thread -targets := mk_thread_kern.o mk_thread_user.o +mk_thread-objs := mk_thread_kern.o mk_thread_user.o -mk_sc-objs := mk_sc.o - -$(obj)/mk_thread : $(obj)/mk_thread_kern.o $(obj)/mk_thread_user.o - $(CC) $(CFLAGS) -o $@ $^ - -$(obj)/mk_thread_user.o : $(src)/mk_thread_user.c - $(CC) $(USER_CFLAGS) -c -o $@ $< +HOSTCFLAGS_mk_thread_kern.o := $(CFLAGS) $(CPPFLAGS) +HOSTCFLAGS_mk_thread_user.o := $(USER_CFLAGS) clean : $(RM) -f $(build-targets) diff -puN arch/um/sys-i386/util/mk_sc.c~Main-uml-patch-no-skas arch/um/sys-i386/util/mk_sc.c --- uml-linux-2.6.7/arch/um/sys-i386/util/mk_sc.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.649298776 +0200 +++ uml-linux-2.6.7-paolo/arch/um/sys-i386/util/mk_sc.c 2004-06-29 21:02:55.755282664 +0200 @@ -38,6 +38,7 @@ int main(int argc, char **argv) SC_OFFSET("SC_ERR", err); SC_OFFSET("SC_CR2", cr2); SC_OFFSET("SC_FPSTATE", fpstate); + SC_OFFSET("SC_SIGMASK", oldmask); SC_FP_OFFSET("SC_FP_CW", cw); SC_FP_OFFSET("SC_FP_SW", sw); SC_FP_OFFSET("SC_FP_TAG", tag); diff -puN arch/um/sys-ia64/Makefile~Main-uml-patch-no-skas arch/um/sys-ia64/Makefile --- uml-linux-2.6.7/arch/um/sys-ia64/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.650298624 +0200 +++ uml-linux-2.6.7-paolo/arch/um/sys-ia64/Makefile 2004-06-29 21:02:55.756282512 +0200 @@ -7,18 +7,5 @@ all: $(OBJ) $(OBJ): $(OBJS) rm -f $@ $(LD) $(LINKFLAGS) --start-group $^ --end-group -o $@ -clean: - rm -f $(OBJS) -fastdep: - -archmrproper: - -archclean: - rm -f link.ld - @$(MAKEBOOT) clean - -archdep: - @$(MAKEBOOT) dep - -modules: +clean-files := $(OBJS) link.ld diff -puN arch/um/sys-ppc/Makefile~Main-uml-patch-no-skas arch/um/sys-ppc/Makefile --- uml-linux-2.6.7/arch/um/sys-ppc/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.652298320 +0200 +++ uml-linux-2.6.7-paolo/arch/um/sys-ppc/Makefile 2004-06-29 21:02:55.756282512 +0200 @@ -66,13 +66,4 @@ misc.o: misc.S ppc_defs.h $(CC) $(EXTRA_AFLAGS) $(AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o rm -f asm -clean: - rm -f $(OBJS) - rm -f ppc_defs.h - rm -f checksum.S semaphore.c mk_defs.c - -fastdep: - -dep: - -modules: +clean-files := $(OBJS) ppc_defs.h checksum.S semaphore.c mk_defs.c diff -puN arch/um/uml.lds.S~Main-uml-patch-no-skas arch/um/uml.lds.S --- uml-linux-2.6.7/arch/um/uml.lds.S~Main-uml-patch-no-skas 2004-06-29 21:02:55.653298168 +0200 +++ uml-linux-2.6.7-paolo/arch/um/uml.lds.S 2004-06-29 21:02:55.756282512 +0200 @@ -9,7 +9,6 @@ SECTIONS { . = START + SIZEOF_HEADERS; - . = ALIGN(4096); __binary_start = .; #ifdef MODE_TT .thread_private : { @@ -26,11 +25,16 @@ SECTIONS . = ALIGN(4096); /* Init code and data */ _stext = .; __init_begin = .; - .text.init : { *(.text.init) } + .init.text : { + _sinittext = .; + *(.init.text) + _einittext = .; + } . = ALIGN(4096); .text : { *(.text) + SCHED_TEXT /* .gnu.warning sections are handled specially by elf32.em. */ *(.gnu.warning) *(.gnu.linkonce.t*) @@ -38,7 +42,7 @@ SECTIONS #include "asm/common.lds.S" - .data.init : { *(.data.init) } + init.data : { *(init.data) } .data : { . = ALIGN(KERNEL_STACK_SIZE); /* init_task */ diff -puN arch/um/util/Makefile~Main-uml-patch-no-skas arch/um/util/Makefile --- uml-linux-2.6.7/arch/um/util/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.654298016 +0200 +++ uml-linux-2.6.7-paolo/arch/um/util/Makefile 2004-06-29 21:02:55.756282512 +0200 @@ -1,23 +1,8 @@ -always := mk_task mk_constants -targets := mk_task_user.o mk_task_kern.o \ - mk_constants_user.o mk_constants_kern.o +host-progs := mk_task mk_constants +always := $(host-progs) -$(obj)/mk_task: $(obj)/mk_task_user.o $(obj)/mk_task_kern.o - $(CC) -o $@ $^ +mk_task-objs := mk_task_user.o mk_task_kern.o +mk_constants-objs := mk_constants_user.o mk_constants_kern.o -$(obj)/mk_task_user.o: $(src)/mk_task_user.c - $(CC) -o $@ -c $< - -$(obj)/mk_constants : $(obj)/mk_constants_user.o $(obj)/mk_constants_kern.o - $(CC) -o $@ $^ - -$(obj)/mk_constants_user.o : $(src)/mk_constants_user.c - $(CC) -c $< -o $@ - -$(obj)/mk_constants_kern.o : $(src)/mk_constants_kern.c - $(CC) $(CFLAGS) -c $< -o $@ - -clean: - $(RM) $(build-targets) - -archmrproper: +HOSTCFLAGS_mk_task_kern.o := $(CFLAGS) $(CPPFLAGS) +HOSTCFLAGS_mk_constants_kern.o := $(CFLAGS) $(CPPFLAGS) diff -puN arch/um/util/mk_constants_kern.c~Main-uml-patch-no-skas arch/um/util/mk_constants_kern.c --- uml-linux-2.6.7/arch/um/util/mk_constants_kern.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.655297864 +0200 +++ uml-linux-2.6.7-paolo/arch/um/util/mk_constants_kern.c 2004-06-29 21:02:55.757282360 +0200 @@ -1,5 +1,6 @@ #include "linux/kernel.h" #include "linux/stringify.h" +#include "linux/time.h" #include "asm/page.h" extern void print_head(void); @@ -11,6 +12,7 @@ int main(int argc, char **argv) { print_head(); print_constant_int("UM_KERN_PAGE_SIZE", PAGE_SIZE); + print_constant_str("UM_KERN_EMERG", KERN_EMERG); print_constant_str("UM_KERN_ALERT", KERN_ALERT); print_constant_str("UM_KERN_CRIT", KERN_CRIT); @@ -19,6 +21,8 @@ int main(int argc, char **argv) print_constant_str("UM_KERN_NOTICE", KERN_NOTICE); print_constant_str("UM_KERN_INFO", KERN_INFO); print_constant_str("UM_KERN_DEBUG", KERN_DEBUG); + + print_constant_int("UM_NSEC_PER_SEC", NSEC_PER_SEC); print_tail(); return(0); } diff -puN /dev/null fs/hostfs/hostfs.h --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/fs/hostfs/hostfs.h 2004-06-29 21:02:55.757282360 +0200 @@ -0,0 +1,79 @@ +#ifndef __UM_FS_HOSTFS +#define __UM_FS_HOSTFS + +#include "os.h" + +/* These are exactly the same definitions as in fs.h, but the names are + * changed so that this file can be included in both kernel and user files. + */ + +#define HOSTFS_ATTR_MODE 1 +#define HOSTFS_ATTR_UID 2 +#define HOSTFS_ATTR_GID 4 +#define HOSTFS_ATTR_SIZE 8 +#define HOSTFS_ATTR_ATIME 16 +#define HOSTFS_ATTR_MTIME 32 +#define HOSTFS_ATTR_CTIME 64 +#define HOSTFS_ATTR_ATIME_SET 128 +#define HOSTFS_ATTR_MTIME_SET 256 +#define HOSTFS_ATTR_FORCE 512 /* Not a change, but a change it */ +#define HOSTFS_ATTR_ATTR_FLAG 1024 + +struct hostfs_iattr { + unsigned int ia_valid; + mode_t ia_mode; + uid_t ia_uid; + gid_t ia_gid; + loff_t ia_size; + struct timespec ia_atime; + struct timespec ia_mtime; + struct timespec ia_ctime; + unsigned int ia_attr_flags; +}; + +extern int stat_file(const char *path, unsigned long long *inode_out, + int *mode_out, int *nlink_out, int *uid_out, int *gid_out, + unsigned long long *size_out, struct timespec *atime_out, + struct timespec *mtime_out, struct timespec *ctime_out, + int *blksize_out, unsigned long long *blocks_out); +extern int access_file(char *path, int r, int w, int x); +extern int open_file(char *path, int r, int w, int append); +extern int file_type(const char *path, int *rdev); +extern void *open_dir(char *path, int *err_out); +extern char *read_dir(void *stream, unsigned long long *pos, + unsigned long long *ino_out, int *len_out); +extern void close_file(void *stream); +extern void close_dir(void *stream); +extern int read_file(int fd, unsigned long long *offset, char *buf, int len); +extern int write_file(int fd, unsigned long long *offset, const char *buf, + int len); +extern int lseek_file(int fd, long long offset, int whence); +extern int file_create(char *name, int ur, int uw, int ux, int gr, + int gw, int gx, int or, int ow, int ox); +extern int set_attr(const char *file, struct hostfs_iattr *attrs); +extern int make_symlink(const char *from, const char *to); +extern int unlink_file(const char *file); +extern int do_mkdir(const char *file, int mode); +extern int do_rmdir(const char *file); +extern int do_mknod(const char *file, int mode, int dev); +extern int link_file(const char *from, const char *to); +extern int do_readlink(char *file, char *buf, int size); +extern int rename_file(char *from, char *to); +extern int do_statfs(char *root, long *bsize_out, long long *blocks_out, + long long *bfree_out, long long *bavail_out, + long long *files_out, long long *ffree_out, + void *fsid_out, int fsid_size, long *namelen_out, + long *spare_out); + +#endif + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN /dev/null fs/hostfs/hostfs_kern.c --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/fs/hostfs/hostfs_kern.c 2004-06-29 21:02:55.758282208 +0200 @@ -0,0 +1,1008 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + * + * Ported the filesystem routines to 2.5. + * 2003-02-10 Petr Baudis + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "hostfs.h" +#include "kern_util.h" +#include "kern.h" +#include "user_util.h" +#include "2_5compat.h" +#include "init.h" + +struct hostfs_inode_info { + char *host_filename; + int fd; + int mode; + struct inode vfs_inode; +}; + +static inline struct hostfs_inode_info *HOSTFS_I(struct inode *inode) +{ + return(list_entry(inode, struct hostfs_inode_info, vfs_inode)); +} + +#define FILE_HOSTFS_I(file) HOSTFS_I((file)->f_dentry->d_inode) + +int hostfs_d_delete(struct dentry *dentry) +{ + return(1); +} + +struct dentry_operations hostfs_dentry_ops = { + .d_delete = hostfs_d_delete, +}; + +/* Changed in hostfs_args before the kernel starts running */ +static char *root_ino = "/"; +static int append = 0; + +#define HOSTFS_SUPER_MAGIC 0x00c0ffee + +static struct inode_operations hostfs_iops; +static struct inode_operations hostfs_dir_iops; +static struct address_space_operations hostfs_link_aops; + +static int __init hostfs_args(char *options, int *add) +{ + char *ptr; + + ptr = strchr(options, ','); + if(ptr != NULL) + *ptr++ = '\0'; + if(*options != '\0') + root_ino = options; + + options = ptr; + while(options){ + ptr = strchr(options, ','); + if(ptr != NULL) + *ptr++ = '\0'; + if(*options != '\0'){ + if(!strcmp(options, "append")) + append = 1; + else printf("hostfs_args - unsupported option - %s\n", + options); + } + options = ptr; + } + return(0); +} + +__uml_setup("hostfs=", hostfs_args, +"hostfs=,,...\n" +" This is used to set hostfs parameters. The root directory argument\n" +" is used to confine all hostfs mounts to within the specified directory\n" +" tree on the host. If this isn't specified, then a user inside UML can\n" +" mount anything on the host that's accessible to the user that's running\n" +" it.\n" +" The only flag currently supported is 'append', which specifies that all\n" +" files opened by hostfs will be opened in append mode.\n\n" +); + +static char *dentry_name(struct dentry *dentry, int extra) +{ + struct dentry *parent; + char *root, *name; + int len; + + len = 0; + parent = dentry; + while(parent->d_parent != parent){ + len += parent->d_name.len + 1; + parent = parent->d_parent; + } + + root = HOSTFS_I(parent->d_inode)->host_filename; + len += strlen(root); + name = kmalloc(len + extra + 1, GFP_KERNEL); + if(name == NULL) return(NULL); + + name[len] = '\0'; + parent = dentry; + while(parent->d_parent != parent){ + len -= parent->d_name.len + 1; + name[len] = '/'; + strncpy(&name[len + 1], parent->d_name.name, + parent->d_name.len); + parent = parent->d_parent; + } + strncpy(name, root, strlen(root)); + return(name); +} + +static char *inode_name(struct inode *ino, int extra) +{ + struct dentry *dentry; + + dentry = list_entry(ino->i_dentry.next, struct dentry, d_alias); + return(dentry_name(dentry, extra)); +} + +static int read_name(struct inode *ino, char *name) +{ + /* The non-int inode fields are copied into ints by stat_file and + * then copied into the inode because passing the actual pointers + * in and having them treated as int * breaks on big-endian machines + */ + int err; + int i_mode, i_nlink, i_blksize; + unsigned long long i_size; + unsigned long long i_ino; + unsigned long long i_blocks; + + err = stat_file(name, &i_ino, &i_mode, &i_nlink, &ino->i_uid, + &ino->i_gid, &i_size, &ino->i_atime, &ino->i_mtime, + &ino->i_ctime, &i_blksize, &i_blocks); + if(err) + return(err); + + ino->i_ino = i_ino; + ino->i_mode = i_mode; + ino->i_nlink = i_nlink; + ino->i_size = i_size; + ino->i_blksize = i_blksize; + ino->i_blocks = i_blocks; + if((ino->i_sb->s_dev == ROOT_DEV) && (ino->i_uid == getuid())) + ino->i_uid = 0; + return(0); +} + +static char *follow_link(char *link) +{ + int len, n; + char *name, *resolved, *end; + + len = 64; + while(1){ + n = -ENOMEM; + name = kmalloc(len, GFP_KERNEL); + if(name == NULL) + goto out; + + n = do_readlink(link, name, len); + if(n < len) + break; + len *= 2; + kfree(name); + } + if(n < 0) + goto out_free; + + if(*name == '/') + return(name); + + end = strrchr(link, '/'); + if(end == NULL) + return(name); + + *(end + 1) = '\0'; + len = strlen(link) + strlen(name) + 1; + + resolved = kmalloc(len, GFP_KERNEL); + if(resolved == NULL){ + n = -ENOMEM; + goto out_free; + } + + sprintf(resolved, "%s%s", link, name); + kfree(name); + kfree(link); + return(resolved); + + out_free: + kfree(name); + out: + return(ERR_PTR(n)); +} + +static int read_inode(struct inode *ino) +{ + char *name; + int err = 0; + + /* Unfortunately, we are called from iget() when we don't have a dentry + * allocated yet. + */ + if(list_empty(&ino->i_dentry)) + goto out; + + err = -ENOMEM; + name = inode_name(ino, 0); + if(name == NULL) + goto out; + + if(file_type(name, NULL) == OS_TYPE_SYMLINK){ + name = follow_link(name); + if(IS_ERR(name)){ + err = PTR_ERR(name); + goto out; + } + } + + err = read_name(ino, name); + kfree(name); + out: + return(err); +} + +int hostfs_statfs(struct super_block *sb, struct kstatfs *sf) +{ + /* do_statfs uses struct statfs64 internally, but the linux kernel + * struct statfs still has 32-bit versions for most of these fields, + * so we convert them here + */ + int err; + long long f_blocks; + long long f_bfree; + long long f_bavail; + long long f_files; + long long f_ffree; + + err = do_statfs(HOSTFS_I(sb->s_root->d_inode)->host_filename, + &sf->f_bsize, &f_blocks, &f_bfree, &f_bavail, &f_files, + &f_ffree, &sf->f_fsid, sizeof(sf->f_fsid), + &sf->f_namelen, sf->f_spare); + if(err) return(err); + sf->f_blocks = f_blocks; + sf->f_bfree = f_bfree; + sf->f_bavail = f_bavail; + sf->f_files = f_files; + sf->f_ffree = f_ffree; + sf->f_type = HOSTFS_SUPER_MAGIC; + return(0); +} + +static struct inode *hostfs_alloc_inode(struct super_block *sb) +{ + struct hostfs_inode_info *hi; + + hi = kmalloc(sizeof(*hi), GFP_KERNEL); + if(hi == NULL) + return(NULL); + + *hi = ((struct hostfs_inode_info) { .host_filename = NULL, + .fd = -1, + .mode = 0 }); + inode_init_once(&hi->vfs_inode); + return(&hi->vfs_inode); +} + +static void hostfs_destroy_inode(struct inode *inode) +{ + if(HOSTFS_I(inode)->host_filename) + kfree(HOSTFS_I(inode)->host_filename); + + if(HOSTFS_I(inode)->fd != -1) + close_file(&HOSTFS_I(inode)->fd); + + kfree(HOSTFS_I(inode)); +} + +static void hostfs_read_inode(struct inode *inode) +{ + read_inode(inode); +} + +static struct super_operations hostfs_sbops = { + .alloc_inode = hostfs_alloc_inode, + .destroy_inode = hostfs_destroy_inode, + .read_inode = hostfs_read_inode, + .statfs = hostfs_statfs, +}; + +int hostfs_readdir(struct file *file, void *ent, filldir_t filldir) +{ + void *dir; + char *name; + unsigned long long next, ino; + int error, len; + + name = dentry_name(file->f_dentry, 0); + if(name == NULL) return(-ENOMEM); + dir = open_dir(name, &error); + kfree(name); + if(dir == NULL) return(-error); + next = file->f_pos; + while((name = read_dir(dir, &next, &ino, &len)) != NULL){ + error = (*filldir)(ent, name, len, file->f_pos, + ino, DT_UNKNOWN); + if(error) break; + file->f_pos = next; + } + close_dir(dir); + return(0); +} + +int hostfs_file_open(struct inode *ino, struct file *file) +{ + char *name; + int mode = 0, r = 0, w = 0, fd; + + mode = file->f_mode & (FMODE_READ | FMODE_WRITE); + if((mode & HOSTFS_I(ino)->mode) == mode) + return(0); + + /* The file may already have been opened, but with the wrong access, + * so this resets things and reopens the file with the new access. + */ + if(HOSTFS_I(ino)->fd != -1){ + close_file(&HOSTFS_I(ino)->fd); + HOSTFS_I(ino)->fd = -1; + } + + HOSTFS_I(ino)->mode |= mode; + if(HOSTFS_I(ino)->mode & FMODE_READ) + r = 1; + if(HOSTFS_I(ino)->mode & FMODE_WRITE) + w = 1; + if(w) + r = 1; + + name = dentry_name(file->f_dentry, 0); + if(name == NULL) + return(-ENOMEM); + + fd = open_file(name, r, w, append); + kfree(name); + if(fd < 0) return(fd); + FILE_HOSTFS_I(file)->fd = fd; + + return(0); +} + +int hostfs_fsync(struct file *file, struct dentry *dentry, int datasync) +{ + return(0); +} + +static struct file_operations hostfs_file_fops = { + .llseek = generic_file_llseek, + .read = generic_file_read, + .write = generic_file_write, + .mmap = generic_file_mmap, + .open = hostfs_file_open, + .release = NULL, + .fsync = hostfs_fsync, +}; + +static struct file_operations hostfs_dir_fops = { + .readdir = hostfs_readdir, + .read = generic_read_dir, +}; + +int hostfs_writepage(struct page *page, struct writeback_control *wbc) +{ + struct address_space *mapping = page->mapping; + struct inode *inode = mapping->host; + char *buffer; + unsigned long long base; + int count = PAGE_CACHE_SIZE; + int end_index = inode->i_size >> PAGE_CACHE_SHIFT; + int err; + + if (page->index >= end_index) + count = inode->i_size & (PAGE_CACHE_SIZE-1); + + buffer = kmap(page); + base = ((unsigned long long) page->index) << PAGE_CACHE_SHIFT; + + err = write_file(HOSTFS_I(inode)->fd, &base, buffer, count); + if(err != count){ + ClearPageUptodate(page); + goto out; + } + + if (base > inode->i_size) + inode->i_size = base; + + if (PageError(page)) + ClearPageError(page); + err = 0; + + out: + kunmap(page); + + unlock_page(page); + return err; +} + +int hostfs_readpage(struct file *file, struct page *page) +{ + char *buffer; + long long start; + int err = 0; + + start = (long long) page->index << PAGE_CACHE_SHIFT; + buffer = kmap(page); + err = read_file(FILE_HOSTFS_I(file)->fd, &start, buffer, + PAGE_CACHE_SIZE); + if(err < 0) goto out; + + memset(&buffer[err], 0, PAGE_CACHE_SIZE - err); + + flush_dcache_page(page); + SetPageUptodate(page); + if (PageError(page)) ClearPageError(page); + err = 0; + out: + kunmap(page); + unlock_page(page); + return(err); +} + +int hostfs_prepare_write(struct file *file, struct page *page, + unsigned int from, unsigned int to) +{ + char *buffer; + long long start, tmp; + int err; + + start = (long long) page->index << PAGE_CACHE_SHIFT; + buffer = kmap(page); + if(from != 0){ + tmp = start; + err = read_file(FILE_HOSTFS_I(file)->fd, &tmp, buffer, + from); + if(err < 0) goto out; + } + if(to != PAGE_CACHE_SIZE){ + start += to; + err = read_file(FILE_HOSTFS_I(file)->fd, &start, buffer + to, + PAGE_CACHE_SIZE - to); + if(err < 0) goto out; + } + err = 0; + out: + kunmap(page); + return(err); +} + +int hostfs_commit_write(struct file *file, struct page *page, unsigned from, + unsigned to) +{ + struct address_space *mapping = page->mapping; + struct inode *inode = mapping->host; + char *buffer; + long long start; + int err = 0; + + start = (long long) (page->index << PAGE_CACHE_SHIFT) + from; + buffer = kmap(page); + err = write_file(FILE_HOSTFS_I(file)->fd, &start, buffer + from, + to - from); + if(err > 0) err = 0; + if(!err && (start > inode->i_size)) + inode->i_size = start; + + kunmap(page); + return(err); +} + +static struct address_space_operations hostfs_aops = { + .writepage = hostfs_writepage, + .readpage = hostfs_readpage, +/* .set_page_dirty = __set_page_dirty_nobuffers, */ + .prepare_write = hostfs_prepare_write, + .commit_write = hostfs_commit_write +}; + +static int init_inode(struct inode *inode, struct dentry *dentry) +{ + char *name; + int type, err = -ENOMEM, rdev; + + if(dentry){ + name = dentry_name(dentry, 0); + if(name == NULL) + goto out; + type = file_type(name, &rdev); + kfree(name); + } + else type = OS_TYPE_DIR; + + err = 0; + if(type == OS_TYPE_SYMLINK) + inode->i_op = &page_symlink_inode_operations; + else if(type == OS_TYPE_DIR) + inode->i_op = &hostfs_dir_iops; + else inode->i_op = &hostfs_iops; + + if(type == OS_TYPE_DIR) inode->i_fop = &hostfs_dir_fops; + else inode->i_fop = &hostfs_file_fops; + + if(type == OS_TYPE_SYMLINK) + inode->i_mapping->a_ops = &hostfs_link_aops; + else inode->i_mapping->a_ops = &hostfs_aops; + + switch (type) { + case OS_TYPE_CHARDEV: + init_special_inode(inode, S_IFCHR, rdev); + break; + case OS_TYPE_BLOCKDEV: + init_special_inode(inode, S_IFBLK, rdev); + break; + case OS_TYPE_FIFO: + init_special_inode(inode, S_IFIFO, 0); + break; + case OS_TYPE_SOCK: + init_special_inode(inode, S_IFSOCK, 0); + break; + } + out: + return(err); +} + +int hostfs_create(struct inode *dir, struct dentry *dentry, int mode, + struct nameidata *nd) +{ + struct inode *inode; + char *name; + int error, fd; + + error = -ENOMEM; + inode = iget(dir->i_sb, 0); + if(inode == NULL) goto out; + + error = init_inode(inode, dentry); + if(error) + goto out_put; + + error = -ENOMEM; + name = dentry_name(dentry, 0); + if(name == NULL) + goto out_put; + + fd = file_create(name, + mode & S_IRUSR, mode & S_IWUSR, mode & S_IXUSR, + mode & S_IRGRP, mode & S_IWGRP, mode & S_IXGRP, + mode & S_IROTH, mode & S_IWOTH, mode & S_IXOTH); + if(fd < 0) + error = fd; + else error = read_name(inode, name); + + kfree(name); + if(error) + goto out_put; + + HOSTFS_I(inode)->fd = fd; + HOSTFS_I(inode)->mode = FMODE_READ | FMODE_WRITE; + d_instantiate(dentry, inode); + return(0); + + out_put: + iput(inode); + out: + return(error); +} + +struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry, + struct nameidata *nd) +{ + struct inode *inode; + char *name; + int err; + + err = -ENOMEM; + inode = iget(ino->i_sb, 0); + if(inode == NULL) + goto out; + + err = init_inode(inode, dentry); + if(err) + goto out_put; + + err = -ENOMEM; + name = dentry_name(dentry, 0); + if(name == NULL) + goto out_put; + + err = read_name(inode, name); + kfree(name); + if(err == -ENOENT){ + iput(inode); + inode = NULL; + } + else if(err) + goto out_put; + + d_add(dentry, inode); + dentry->d_op = &hostfs_dentry_ops; + return(NULL); + + out_put: + iput(inode); + out: + return(ERR_PTR(err)); +} + +static char *inode_dentry_name(struct inode *ino, struct dentry *dentry) +{ + char *file; + int len; + + file = inode_name(ino, dentry->d_name.len + 1); + if(file == NULL) return(NULL); + strcat(file, "/"); + len = strlen(file); + strncat(file, dentry->d_name.name, dentry->d_name.len); + file[len + dentry->d_name.len] = '\0'; + return(file); +} + +int hostfs_link(struct dentry *to, struct inode *ino, struct dentry *from) +{ + char *from_name, *to_name; + int err; + + if((from_name = inode_dentry_name(ino, from)) == NULL) + return(-ENOMEM); + to_name = dentry_name(to, 0); + if(to_name == NULL){ + kfree(from_name); + return(-ENOMEM); + } + err = link_file(to_name, from_name); + kfree(from_name); + kfree(to_name); + return(err); +} + +int hostfs_unlink(struct inode *ino, struct dentry *dentry) +{ + char *file; + int err; + + if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM); + if(append) + return(-EPERM); + + err = unlink_file(file); + kfree(file); + return(err); +} + +int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to) +{ + char *file; + int err; + + if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM); + err = make_symlink(file, to); + kfree(file); + return(err); +} + +int hostfs_mkdir(struct inode *ino, struct dentry *dentry, int mode) +{ + char *file; + int err; + + if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM); + err = do_mkdir(file, mode); + kfree(file); + return(err); +} + +int hostfs_rmdir(struct inode *ino, struct dentry *dentry) +{ + char *file; + int err; + + if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM); + err = do_rmdir(file); + kfree(file); + return(err); +} + +int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev) +{ + struct inode *inode; + char *name; + int err = -ENOMEM; + + inode = iget(dir->i_sb, 0); + if(inode == NULL) + goto out; + + err = init_inode(inode, dentry); + if(err) + goto out_put; + + err = -ENOMEM; + name = dentry_name(dentry, 0); + if(name == NULL) + goto out_put; + + init_special_inode(inode, mode, dev); + err = do_mknod(name, mode, dev); + if(err) + goto out_free; + + err = read_name(inode, name); + kfree(name); + if(err) + goto out_put; + + d_instantiate(dentry, inode); + return(0); + + out_free: + kfree(name); + out_put: + iput(inode); + out: + return(err); +} + +int hostfs_rename(struct inode *from_ino, struct dentry *from, + struct inode *to_ino, struct dentry *to) +{ + char *from_name, *to_name; + int err; + + if((from_name = inode_dentry_name(from_ino, from)) == NULL) + return(-ENOMEM); + if((to_name = inode_dentry_name(to_ino, to)) == NULL){ + kfree(from_name); + return(-ENOMEM); + } + err = rename_file(from_name, to_name); + kfree(from_name); + kfree(to_name); + return(err); +} + +void hostfs_truncate(struct inode *ino) +{ + not_implemented(); +} + +int hostfs_permission(struct inode *ino, int desired, struct nameidata *nd) +{ + char *name; + int r = 0, w = 0, x = 0, err; + + if(desired & MAY_READ) r = 1; + if(desired & MAY_WRITE) w = 1; + if(desired & MAY_EXEC) x = 1; + name = inode_name(ino, 0); + if(name == NULL) return(-ENOMEM); + err = access_file(name, r, w, x); + kfree(name); + if(!err) err = vfs_permission(ino, desired); + return(err); +} + +int hostfs_setattr(struct dentry *dentry, struct iattr *attr) +{ + struct hostfs_iattr attrs; + char *name; + int err; + + if(append) + attr->ia_valid &= ~ATTR_SIZE; + + attrs.ia_valid = 0; + if(attr->ia_valid & ATTR_MODE){ + attrs.ia_valid |= HOSTFS_ATTR_MODE; + attrs.ia_mode = attr->ia_mode; + } + if(attr->ia_valid & ATTR_UID){ + if((dentry->d_inode->i_sb->s_dev == ROOT_DEV) && + (attr->ia_uid == 0)) + attr->ia_uid = getuid(); + attrs.ia_valid |= HOSTFS_ATTR_UID; + attrs.ia_uid = attr->ia_uid; + } + if(attr->ia_valid & ATTR_GID){ + if((dentry->d_inode->i_sb->s_dev == ROOT_DEV) && + (attr->ia_gid == 0)) + attr->ia_gid = getuid(); + attrs.ia_valid |= HOSTFS_ATTR_GID; + attrs.ia_gid = attr->ia_gid; + } + if(attr->ia_valid & ATTR_SIZE){ + attrs.ia_valid |= HOSTFS_ATTR_SIZE; + attrs.ia_size = attr->ia_size; + } + if(attr->ia_valid & ATTR_ATIME){ + attrs.ia_valid |= HOSTFS_ATTR_ATIME; + attrs.ia_atime = attr->ia_atime; + } + if(attr->ia_valid & ATTR_MTIME){ + attrs.ia_valid |= HOSTFS_ATTR_MTIME; + attrs.ia_mtime = attr->ia_mtime; + } + if(attr->ia_valid & ATTR_CTIME){ + attrs.ia_valid |= HOSTFS_ATTR_CTIME; + attrs.ia_ctime = attr->ia_ctime; + } + if(attr->ia_valid & ATTR_ATIME_SET){ + attrs.ia_valid |= HOSTFS_ATTR_ATIME_SET; + } + if(attr->ia_valid & ATTR_MTIME_SET){ + attrs.ia_valid |= HOSTFS_ATTR_MTIME_SET; + } + name = dentry_name(dentry, 0); + if(name == NULL) return(-ENOMEM); + err = set_attr(name, &attrs); + kfree(name); + if(err) + return(err); + + return(inode_setattr(dentry->d_inode, attr)); +} + +int hostfs_getattr(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat) +{ + generic_fillattr(dentry->d_inode, stat); + return(0); +} + +static struct inode_operations hostfs_iops = { + .create = hostfs_create, + .link = hostfs_link, + .unlink = hostfs_unlink, + .symlink = hostfs_symlink, + .mkdir = hostfs_mkdir, + .rmdir = hostfs_rmdir, + .mknod = hostfs_mknod, + .rename = hostfs_rename, + .truncate = hostfs_truncate, + .permission = hostfs_permission, + .setattr = hostfs_setattr, + .getattr = hostfs_getattr, +}; + +static struct inode_operations hostfs_dir_iops = { + .create = hostfs_create, + .lookup = hostfs_lookup, + .link = hostfs_link, + .unlink = hostfs_unlink, + .symlink = hostfs_symlink, + .mkdir = hostfs_mkdir, + .rmdir = hostfs_rmdir, + .mknod = hostfs_mknod, + .rename = hostfs_rename, + .truncate = hostfs_truncate, + .permission = hostfs_permission, + .setattr = hostfs_setattr, + .getattr = hostfs_getattr, +}; + +int hostfs_link_readpage(struct file *file, struct page *page) +{ + char *buffer, *name; + long long start; + int err; + + start = page->index << PAGE_CACHE_SHIFT; + buffer = kmap(page); + name = inode_name(page->mapping->host, 0); + if(name == NULL) return(-ENOMEM); + err = do_readlink(name, buffer, PAGE_CACHE_SIZE); + kfree(name); + if(err == PAGE_CACHE_SIZE) + err = -E2BIG; + else if(err > 0){ + flush_dcache_page(page); + SetPageUptodate(page); + if (PageError(page)) ClearPageError(page); + err = 0; + } + kunmap(page); + unlock_page(page); + return(err); +} + +static struct address_space_operations hostfs_link_aops = { + .readpage = hostfs_link_readpage, +}; + +static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent) +{ + struct inode *root_inode; + char *name, *data = d; + int err; + + sb->s_blocksize = 1024; + sb->s_blocksize_bits = 10; + sb->s_magic = HOSTFS_SUPER_MAGIC; + sb->s_op = &hostfs_sbops; + + if((data == NULL) || (*data == '\0')) + data = root_ino; + + err = -ENOMEM; + name = kmalloc(strlen(data) + 1, GFP_KERNEL); + if(name == NULL) + goto out; + + strcpy(name, data); + + root_inode = iget(sb, 0); + if(root_inode == NULL) + goto out_free; + + err = init_inode(root_inode, NULL); + if(err) + goto out_put; + + HOSTFS_I(root_inode)->host_filename = name; + + err = -ENOMEM; + sb->s_root = d_alloc_root(root_inode); + if(sb->s_root == NULL) + goto out_put; + + err = read_inode(root_inode); + if(err) + goto out_put; + + return(0); + + out_put: + iput(root_inode); + out_free: + kfree(name); + out: + return(err); +} + +static struct super_block *hostfs_read_sb(struct file_system_type *type, + int flags, const char *dev_name, + void *data) +{ + return(get_sb_nodev(type, flags, data, hostfs_fill_sb_common)); +} + +static struct file_system_type hostfs_type = { + .owner = THIS_MODULE, + .name = "hostfs", + .get_sb = hostfs_read_sb, + .kill_sb = kill_anon_super, + .fs_flags = 0, +}; + +static int __init init_hostfs(void) +{ + return(register_filesystem(&hostfs_type)); +} + +static void __exit exit_hostfs(void) +{ + unregister_filesystem(&hostfs_type); +} + +module_init(init_hostfs) +module_exit(exit_hostfs) +MODULE_LICENSE("GPL"); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN /dev/null fs/hostfs/hostfs_user.c --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/fs/hostfs/hostfs_user.c 2004-06-29 21:02:55.758282208 +0200 @@ -0,0 +1,361 @@ +/* + * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "hostfs.h" +#include "kern_util.h" +#include "user.h" + +int stat_file(const char *path, unsigned long long *inode_out, int *mode_out, + int *nlink_out, int *uid_out, int *gid_out, + unsigned long long *size_out, struct timespec *atime_out, + struct timespec *mtime_out, struct timespec *ctime_out, + int *blksize_out, unsigned long long *blocks_out) +{ + struct stat64 buf; + + if(lstat64(path, &buf) < 0) + return(-errno); + + /* See the Makefile for why STAT64_INO_FIELD is passed in + * by the build + */ + if(inode_out != NULL) *inode_out = buf.STAT64_INO_FIELD; + if(mode_out != NULL) *mode_out = buf.st_mode; + if(nlink_out != NULL) *nlink_out = buf.st_nlink; + if(uid_out != NULL) *uid_out = buf.st_uid; + if(gid_out != NULL) *gid_out = buf.st_gid; + if(size_out != NULL) *size_out = buf.st_size; + if(atime_out != NULL) { + atime_out->tv_sec = buf.st_atime; + atime_out->tv_nsec = 0; + } + if(mtime_out != NULL) { + mtime_out->tv_sec = buf.st_mtime; + mtime_out->tv_nsec = 0; + } + if(ctime_out != NULL) { + ctime_out->tv_sec = buf.st_ctime; + ctime_out->tv_nsec = 0; + } + if(blksize_out != NULL) *blksize_out = buf.st_blksize; + if(blocks_out != NULL) *blocks_out = buf.st_blocks; + return(0); +} + +int file_type(const char *path, int *rdev) +{ + struct stat64 buf; + + if(lstat64(path, &buf) < 0) + return(-errno); + if(rdev != NULL) + *rdev = buf.st_rdev; + + if(S_ISDIR(buf.st_mode)) return(OS_TYPE_DIR); + else if(S_ISLNK(buf.st_mode)) return(OS_TYPE_SYMLINK); + else if(S_ISCHR(buf.st_mode)) return(OS_TYPE_CHARDEV); + else if(S_ISBLK(buf.st_mode)) return(OS_TYPE_BLOCKDEV); + else if(S_ISFIFO(buf.st_mode))return(OS_TYPE_FIFO); + else if(S_ISSOCK(buf.st_mode))return(OS_TYPE_SOCK); + else return(OS_TYPE_FILE); +} + +int access_file(char *path, int r, int w, int x) +{ + int mode = 0; + + if(r) mode = R_OK; + if(w) mode |= W_OK; + if(x) mode |= X_OK; + if(access(path, mode) != 0) return(-errno); + else return(0); +} + +int open_file(char *path, int r, int w, int append) +{ + int mode = 0, fd; + + if(r && !w) + mode = O_RDONLY; + else if(!r && w) + mode = O_WRONLY; + else if(r && w) + mode = O_RDWR; + else panic("Impossible mode in open_file"); + + if(append) + mode |= O_APPEND; + fd = open64(path, mode); + if(fd < 0) return(-errno); + else return(fd); +} + +void *open_dir(char *path, int *err_out) +{ + DIR *dir; + + dir = opendir(path); + *err_out = errno; + if(dir == NULL) return(NULL); + return(dir); +} + +char *read_dir(void *stream, unsigned long long *pos, + unsigned long long *ino_out, int *len_out) +{ + DIR *dir = stream; + struct dirent *ent; + + seekdir(dir, *pos); + ent = readdir(dir); + if(ent == NULL) return(NULL); + *len_out = strlen(ent->d_name); + *ino_out = ent->d_ino; + *pos = telldir(dir); + return(ent->d_name); +} + +int read_file(int fd, unsigned long long *offset, char *buf, int len) +{ + int n; + + n = pread64(fd, buf, len, *offset); + if(n < 0) return(-errno); + *offset += n; + return(n); +} + +int write_file(int fd, unsigned long long *offset, const char *buf, int len) +{ + int n; + + n = pwrite64(fd, buf, len, *offset); + if(n < 0) return(-errno); + *offset += n; + return(n); +} + +int lseek_file(int fd, long long offset, int whence) +{ + int ret; + + ret = lseek64(fd, offset, whence); + if(ret < 0) return(-errno); + return(0); +} + +void close_file(void *stream) +{ + close(*((int *) stream)); +} + +void close_dir(void *stream) +{ + closedir(stream); +} + +int file_create(char *name, int ur, int uw, int ux, int gr, + int gw, int gx, int or, int ow, int ox) +{ + int mode, fd; + + mode = 0; + mode |= ur ? S_IRUSR : 0; + mode |= uw ? S_IWUSR : 0; + mode |= ux ? S_IXUSR : 0; + mode |= gr ? S_IRGRP : 0; + mode |= gw ? S_IWGRP : 0; + mode |= gx ? S_IXGRP : 0; + mode |= or ? S_IROTH : 0; + mode |= ow ? S_IWOTH : 0; + mode |= ox ? S_IXOTH : 0; + fd = open64(name, O_CREAT | O_RDWR, mode); + if(fd < 0) + return(-errno); + return(fd); +} + +int set_attr(const char *file, struct hostfs_iattr *attrs) +{ + struct utimbuf buf; + int err, ma; + + if(attrs->ia_valid & HOSTFS_ATTR_MODE){ + if(chmod(file, attrs->ia_mode) != 0) return(-errno); + } + if(attrs->ia_valid & HOSTFS_ATTR_UID){ + if(chown(file, attrs->ia_uid, -1)) return(-errno); + } + if(attrs->ia_valid & HOSTFS_ATTR_GID){ + if(chown(file, -1, attrs->ia_gid)) return(-errno); + } + if(attrs->ia_valid & HOSTFS_ATTR_SIZE){ + if(truncate(file, attrs->ia_size)) return(-errno); + } + ma = HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET; + if((attrs->ia_valid & ma) == ma){ + buf.actime = attrs->ia_atime.tv_sec; + buf.modtime = attrs->ia_mtime.tv_sec; + if(utime(file, &buf) != 0) return(-errno); + } + else { + struct timespec ts; + + if(attrs->ia_valid & HOSTFS_ATTR_ATIME_SET){ + err = stat_file(file, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, &ts, NULL, NULL, NULL); + if(err != 0) + return(err); + buf.actime = attrs->ia_atime.tv_sec; + buf.modtime = ts.tv_sec; + if(utime(file, &buf) != 0) + return(-errno); + } + if(attrs->ia_valid & HOSTFS_ATTR_MTIME_SET){ + err = stat_file(file, NULL, NULL, NULL, NULL, NULL, + NULL, &ts, NULL, NULL, NULL, NULL); + if(err != 0) + return(err); + buf.actime = ts.tv_sec; + buf.modtime = attrs->ia_mtime.tv_sec; + if(utime(file, &buf) != 0) + return(-errno); + } + } + if(attrs->ia_valid & HOSTFS_ATTR_CTIME) ; + if(attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)){ + err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL, + &attrs->ia_atime, &attrs->ia_mtime, NULL, + NULL, NULL); + if(err != 0) return(err); + } + return(0); +} + +int make_symlink(const char *from, const char *to) +{ + int err; + + err = symlink(to, from); + if(err) return(-errno); + return(0); +} + +int unlink_file(const char *file) +{ + int err; + + err = unlink(file); + if(err) return(-errno); + return(0); +} + +int do_mkdir(const char *file, int mode) +{ + int err; + + err = mkdir(file, mode); + if(err) return(-errno); + return(0); +} + +int do_rmdir(const char *file) +{ + int err; + + err = rmdir(file); + if(err) return(-errno); + return(0); +} + +int do_mknod(const char *file, int mode, int dev) +{ + int err; + + err = mknod(file, mode, dev); + if(err) return(-errno); + return(0); +} + +int link_file(const char *to, const char *from) +{ + int err; + + err = link(to, from); + if(err) return(-errno); + return(0); +} + +int do_readlink(char *file, char *buf, int size) +{ + int n; + + n = readlink(file, buf, size); + if(n < 0) + return(-errno); + if(n < size) + buf[n] = '\0'; + return(n); +} + +int rename_file(char *from, char *to) +{ + int err; + + err = rename(from, to); + if(err < 0) return(-errno); + return(0); +} + +int do_statfs(char *root, long *bsize_out, long long *blocks_out, + long long *bfree_out, long long *bavail_out, + long long *files_out, long long *ffree_out, + void *fsid_out, int fsid_size, long *namelen_out, + long *spare_out) +{ + struct statfs64 buf; + int err; + + err = statfs64(root, &buf); + if(err < 0) return(-errno); + *bsize_out = buf.f_bsize; + *blocks_out = buf.f_blocks; + *bfree_out = buf.f_bfree; + *bavail_out = buf.f_bavail; + *files_out = buf.f_files; + *ffree_out = buf.f_ffree; + memcpy(fsid_out, &buf.f_fsid, + sizeof(buf.f_fsid) > fsid_size ? fsid_size : + sizeof(buf.f_fsid)); + *namelen_out = buf.f_namelen; + spare_out[0] = buf.f_spare[0]; + spare_out[1] = buf.f_spare[1]; + spare_out[2] = buf.f_spare[2]; + spare_out[3] = buf.f_spare[3]; + spare_out[4] = buf.f_spare[4]; + spare_out[5] = buf.f_spare[5]; + return(0); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN /dev/null fs/hostfs/Makefile --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/fs/hostfs/Makefile 2004-06-29 21:02:55.759282056 +0200 @@ -0,0 +1,26 @@ +# +# Copyright (C) 2000 Jeff Dike (jdike@karaya.com) +# Licensed under the GPL +# + +# struct stat64 changed the inode field name between 2.2 and 2.4 from st_ino +# to __st_ino. It stayed in the same place, so as long as the correct name +# is used, hostfs compiled on 2.2 should work on 2.4 and vice versa. + +STAT64_INO_FIELD := $(shell grep -q __st_ino /usr/include/bits/stat.h && \ + echo __)st_ino + +hostfs-objs := hostfs_kern.o hostfs_user.o + +obj-y = +obj-$(CONFIG_HOSTFS) += hostfs.o + +SINGLE_OBJS = $(foreach f,$(patsubst %.o,%,$(obj-y) $(obj-m)),$($(f)-objs)) + +USER_OBJS := $(filter %_user.o,$(obj-y) $(obj-m) $(SINGLE_OBJS)) +USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file)) + +USER_CFLAGS += -DSTAT64_INO_FIELD=$(STAT64_INO_FIELD) + +$(USER_OBJS) : %.o: %.c + $(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $< diff -puN /dev/null fs/hppfs/hppfs_kern.c --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/fs/hppfs/hppfs_kern.c 2004-06-29 21:02:55.760281904 +0200 @@ -0,0 +1,811 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "os.h" + +static int init_inode(struct inode *inode, struct dentry *dentry); + +struct hppfs_data { + struct list_head list; + char contents[PAGE_SIZE - sizeof(struct list_head)]; +}; + +struct hppfs_private { + struct file proc_file; + int host_fd; + loff_t len; + struct hppfs_data *contents; +}; + +struct hppfs_inode_info { + struct dentry *proc_dentry; + struct inode vfs_inode; +}; + +static inline struct hppfs_inode_info *HPPFS_I(struct inode *inode) +{ + return(list_entry(inode, struct hppfs_inode_info, vfs_inode)); +} + +#define HPPFS_SUPER_MAGIC 0xb00000ee + +static struct super_operations hppfs_sbops; + +static int is_pid(struct dentry *dentry) +{ + struct super_block *sb; + int i; + + sb = dentry->d_sb; + if((sb->s_op != &hppfs_sbops) || (dentry->d_parent != sb->s_root)) + return(0); + + for(i = 0; i < dentry->d_name.len; i++){ + if(!isdigit(dentry->d_name.name[i])) + return(0); + } + return(1); +} + +static char *dentry_name(struct dentry *dentry, int extra) +{ + struct dentry *parent; + char *root, *name; + const char *seg_name; + int len, seg_len; + + len = 0; + parent = dentry; + while(parent->d_parent != parent){ + if(is_pid(parent)) + len += strlen("pid") + 1; + else len += parent->d_name.len + 1; + parent = parent->d_parent; + } + + root = "proc"; + len += strlen(root); + name = kmalloc(len + extra + 1, GFP_KERNEL); + if(name == NULL) return(NULL); + + name[len] = '\0'; + parent = dentry; + while(parent->d_parent != parent){ + if(is_pid(parent)){ + seg_name = "pid"; + seg_len = strlen("pid"); + } + else { + seg_name = parent->d_name.name; + seg_len = parent->d_name.len; + } + + len -= seg_len + 1; + name[len] = '/'; + strncpy(&name[len + 1], seg_name, seg_len); + parent = parent->d_parent; + } + strncpy(name, root, strlen(root)); + return(name); +} + +struct dentry_operations hppfs_dentry_ops = { +}; + +static int file_removed(struct dentry *dentry, const char *file) +{ + char *host_file; + int extra, fd; + + extra = 0; + if(file != NULL) extra += strlen(file) + 1; + + host_file = dentry_name(dentry, extra + strlen("/remove")); + if(host_file == NULL){ + printk("file_removed : allocation failed\n"); + return(-ENOMEM); + } + + if(file != NULL){ + strcat(host_file, "/"); + strcat(host_file, file); + } + strcat(host_file, "/remove"); + + fd = os_open_file(host_file, of_read(OPENFLAGS()), 0); + kfree(host_file); + if(fd > 0){ + os_close_file(fd); + return(1); + } + return(0); +} + +static void hppfs_read_inode(struct inode *ino) +{ + struct inode *proc_ino; + + if(HPPFS_I(ino)->proc_dentry == NULL) + return; + + proc_ino = HPPFS_I(ino)->proc_dentry->d_inode; + ino->i_uid = proc_ino->i_uid; + ino->i_gid = proc_ino->i_gid; + ino->i_atime = proc_ino->i_atime; + ino->i_mtime = proc_ino->i_mtime; + ino->i_ctime = proc_ino->i_ctime; + ino->i_ino = proc_ino->i_ino; + ino->i_mode = proc_ino->i_mode; + ino->i_nlink = proc_ino->i_nlink; + ino->i_size = proc_ino->i_size; + ino->i_blksize = proc_ino->i_blksize; + ino->i_blocks = proc_ino->i_blocks; +} + +static struct dentry *hppfs_lookup(struct inode *ino, struct dentry *dentry, + struct nameidata *nd) +{ + struct dentry *proc_dentry, *new, *parent; + struct inode *inode; + int err, deleted; + + deleted = file_removed(dentry, NULL); + if(deleted < 0) + return(ERR_PTR(deleted)); + else if(deleted) + return(ERR_PTR(-ENOENT)); + + err = -ENOMEM; + parent = HPPFS_I(ino)->proc_dentry; + down(&parent->d_inode->i_sem); + proc_dentry = d_lookup(parent, &dentry->d_name); + if(proc_dentry == NULL){ + proc_dentry = d_alloc(parent, &dentry->d_name); + if(proc_dentry == NULL){ + up(&parent->d_inode->i_sem); + goto out; + } + new = (*parent->d_inode->i_op->lookup)(parent->d_inode, + proc_dentry, NULL); + if(new){ + dput(proc_dentry); + proc_dentry = new; + } + } + up(&parent->d_inode->i_sem); + + if(IS_ERR(proc_dentry)) + return(proc_dentry); + + inode = iget(ino->i_sb, 0); + if(inode == NULL) + goto out_dput; + + err = init_inode(inode, proc_dentry); + if(err) + goto out_put; + + hppfs_read_inode(inode); + + d_add(dentry, inode); + dentry->d_op = &hppfs_dentry_ops; + return(NULL); + + out_put: + iput(inode); + out_dput: + dput(proc_dentry); + out: + return(ERR_PTR(err)); +} + +static struct inode_operations hppfs_file_iops = { +}; + +static ssize_t read_proc(struct file *file, char *buf, ssize_t count, + loff_t *ppos, int is_user) +{ + ssize_t (*read)(struct file *, char *, size_t, loff_t *); + ssize_t n; + + read = file->f_dentry->d_inode->i_fop->read; + + if(!is_user) + set_fs(KERNEL_DS); + + n = (*read)(file, buf, count, &file->f_pos); + + if(!is_user) + set_fs(USER_DS); + + if(ppos) *ppos = file->f_pos; + return(n); +} + +static ssize_t hppfs_read_file(int fd, char *buf, ssize_t count) +{ + ssize_t n; + int cur, err; + char *new_buf; + + n = -ENOMEM; + new_buf = kmalloc(PAGE_SIZE, GFP_KERNEL); + if(new_buf == NULL){ + printk("hppfs_read_file : kmalloc failed\n"); + goto out; + } + n = 0; + while(count > 0){ + cur = min_t(ssize_t, count, PAGE_SIZE); + err = os_read_file(fd, new_buf, cur); + if(err < 0){ + printk("hppfs_read : read failed, errno = %d\n", + count); + n = err; + goto out_free; + } + else if(err == 0) + break; + + if(copy_to_user(buf, new_buf, err)){ + n = -EFAULT; + goto out_free; + } + n += err; + count -= err; + } + out_free: + kfree(new_buf); + out: + return(n); +} + +static ssize_t hppfs_read(struct file *file, char *buf, size_t count, + loff_t *ppos) +{ + struct hppfs_private *hppfs = file->private_data; + struct hppfs_data *data; + loff_t off; + int err; + + if(hppfs->contents != NULL){ + if(*ppos >= hppfs->len) return(0); + + data = hppfs->contents; + off = *ppos; + while(off >= sizeof(data->contents)){ + data = list_entry(data->list.next, struct hppfs_data, + list); + off -= sizeof(data->contents); + } + + if(off + count > hppfs->len) + count = hppfs->len - off; + copy_to_user(buf, &data->contents[off], count); + *ppos += count; + } + else if(hppfs->host_fd != -1){ + err = os_seek_file(hppfs->host_fd, *ppos); + if(err){ + printk("hppfs_read : seek failed, errno = %d\n", err); + return(err); + } + count = hppfs_read_file(hppfs->host_fd, buf, count); + if(count > 0) + *ppos += count; + } + else count = read_proc(&hppfs->proc_file, buf, count, ppos, 1); + + return(count); +} + +static ssize_t hppfs_write(struct file *file, const char *buf, size_t len, + loff_t *ppos) +{ + struct hppfs_private *data = file->private_data; + struct file *proc_file = &data->proc_file; + ssize_t (*write)(struct file *, const char *, size_t, loff_t *); + int err; + + write = proc_file->f_dentry->d_inode->i_fop->write; + + proc_file->f_pos = file->f_pos; + err = (*write)(proc_file, buf, len, &proc_file->f_pos); + file->f_pos = proc_file->f_pos; + + return(err); +} + +static int open_host_sock(char *host_file, int *filter_out) +{ + char *end; + int fd; + + end = &host_file[strlen(host_file)]; + strcpy(end, "/rw"); + *filter_out = 1; + fd = os_connect_socket(host_file); + if(fd > 0) + return(fd); + + strcpy(end, "/r"); + *filter_out = 0; + fd = os_connect_socket(host_file); + return(fd); +} + +static void free_contents(struct hppfs_data *head) +{ + struct hppfs_data *data; + struct list_head *ele, *next; + + if(head == NULL) return; + + list_for_each_safe(ele, next, &head->list){ + data = list_entry(ele, struct hppfs_data, list); + kfree(data); + } + kfree(head); +} + +static struct hppfs_data *hppfs_get_data(int fd, int filter, + struct file *proc_file, + struct file *hppfs_file, + loff_t *size_out) +{ + struct hppfs_data *data, *new, *head; + int n, err; + + err = -ENOMEM; + data = kmalloc(sizeof(*data), GFP_KERNEL); + if(data == NULL){ + printk("hppfs_get_data : head allocation failed\n"); + goto failed; + } + + INIT_LIST_HEAD(&data->list); + + head = data; + *size_out = 0; + + if(filter){ + while((n = read_proc(proc_file, data->contents, + sizeof(data->contents), NULL, 0)) > 0) + os_write_file(fd, data->contents, n); + err = os_shutdown_socket(fd, 0, 1); + if(err){ + printk("hppfs_get_data : failed to shut down " + "socket\n"); + goto failed_free; + } + } + while(1){ + n = os_read_file(fd, data->contents, sizeof(data->contents)); + if(n < 0){ + err = n; + printk("hppfs_get_data : read failed, errno = %d\n", + err); + goto failed_free; + } + else if(n == 0) + break; + + *size_out += n; + + if(n < sizeof(data->contents)) + break; + + new = kmalloc(sizeof(*data), GFP_KERNEL); + if(new == 0){ + printk("hppfs_get_data : data allocation failed\n"); + err = -ENOMEM; + goto failed_free; + } + + INIT_LIST_HEAD(&new->list); + list_add(&new->list, &data->list); + data = new; + } + return(head); + + failed_free: + free_contents(head); + failed: + return(ERR_PTR(err)); +} + +static struct hppfs_private *hppfs_data(void) +{ + struct hppfs_private *data; + + data = kmalloc(sizeof(*data), GFP_KERNEL); + if(data == NULL) + return(data); + + *data = ((struct hppfs_private ) { .host_fd = -1, + .len = -1, + .contents = NULL } ); + return(data); +} + +static int file_mode(int fmode) +{ + if(fmode == (FMODE_READ | FMODE_WRITE)) + return(O_RDWR); + if(fmode == FMODE_READ) + return(O_RDONLY); + if(fmode == FMODE_WRITE) + return(O_WRONLY); + return(0); +} + +static int hppfs_open(struct inode *inode, struct file *file) +{ + struct hppfs_private *data; + struct dentry *proc_dentry; + char *host_file; + int err, fd, type, filter; + + err = -ENOMEM; + data = hppfs_data(); + if(data == NULL) + goto out; + + host_file = dentry_name(file->f_dentry, strlen("/rw")); + if(host_file == NULL) + goto out_free2; + + proc_dentry = HPPFS_I(inode)->proc_dentry; + + /* XXX This isn't closed anywhere */ + err = open_private_file(&data->proc_file, proc_dentry, + file_mode(file->f_mode)); + if(err) + goto out_free1; + + type = os_file_type(host_file); + if(type == OS_TYPE_FILE){ + fd = os_open_file(host_file, of_read(OPENFLAGS()), 0); + if(fd >= 0) + data->host_fd = fd; + else printk("hppfs_open : failed to open '%s', errno = %d\n", + host_file, -fd); + + data->contents = NULL; + } + else if(type == OS_TYPE_DIR){ + fd = open_host_sock(host_file, &filter); + if(fd > 0){ + data->contents = hppfs_get_data(fd, filter, + &data->proc_file, + file, &data->len); + if(!IS_ERR(data->contents)) + data->host_fd = fd; + } + else printk("hppfs_open : failed to open a socket in " + "'%s', errno = %d\n", host_file, -fd); + } + kfree(host_file); + + file->private_data = data; + return(0); + + out_free1: + kfree(host_file); + out_free2: + free_contents(data->contents); + kfree(data); + out: + return(err); +} + +static int hppfs_dir_open(struct inode *inode, struct file *file) +{ + struct hppfs_private *data; + struct dentry *proc_dentry; + int err; + + err = -ENOMEM; + data = hppfs_data(); + if(data == NULL) + goto out; + + proc_dentry = HPPFS_I(inode)->proc_dentry; + err = open_private_file(&data->proc_file, proc_dentry, + file_mode(file->f_mode)); + if(err) + goto out_free; + + file->private_data = data; + return(0); + + out_free: + kfree(data); + out: + return(err); +} + +static loff_t hppfs_llseek(struct file *file, loff_t off, int where) +{ + struct hppfs_private *data = file->private_data; + struct file *proc_file = &data->proc_file; + loff_t (*llseek)(struct file *, loff_t, int); + loff_t ret; + + llseek = proc_file->f_dentry->d_inode->i_fop->llseek; + if(llseek != NULL){ + ret = (*llseek)(proc_file, off, where); + if(ret < 0) + return(ret); + } + + return(default_llseek(file, off, where)); +} + +static struct file_operations hppfs_file_fops = { + .owner = NULL, + .llseek = hppfs_llseek, + .read = hppfs_read, + .write = hppfs_write, + .open = hppfs_open, +}; + +struct hppfs_dirent { + void *vfs_dirent; + filldir_t filldir; + struct dentry *dentry; +}; + +static int hppfs_filldir(void *d, const char *name, int size, + loff_t offset, ino_t inode, unsigned int type) +{ + struct hppfs_dirent *dirent = d; + + if(file_removed(dirent->dentry, name)) + return(0); + + return((*dirent->filldir)(dirent->vfs_dirent, name, size, offset, + inode, type)); +} + +static int hppfs_readdir(struct file *file, void *ent, filldir_t filldir) +{ + struct hppfs_private *data = file->private_data; + struct file *proc_file = &data->proc_file; + int (*readdir)(struct file *, void *, filldir_t); + struct hppfs_dirent dirent = ((struct hppfs_dirent) + { .vfs_dirent = ent, + .filldir = filldir, + .dentry = file->f_dentry } ); + int err; + + readdir = proc_file->f_dentry->d_inode->i_fop->readdir; + + proc_file->f_pos = file->f_pos; + err = (*readdir)(proc_file, &dirent, hppfs_filldir); + file->f_pos = proc_file->f_pos; + + return(err); +} + +static int hppfs_fsync(struct file *file, struct dentry *dentry, int datasync) +{ + return(0); +} + +static struct file_operations hppfs_dir_fops = { + .owner = NULL, + .readdir = hppfs_readdir, + .open = hppfs_dir_open, + .fsync = hppfs_fsync, +}; + +static int hppfs_statfs(struct super_block *sb, struct kstatfs *sf) +{ + sf->f_blocks = 0; + sf->f_bfree = 0; + sf->f_bavail = 0; + sf->f_files = 0; + sf->f_ffree = 0; + sf->f_type = HPPFS_SUPER_MAGIC; + return(0); +} + +static struct inode *hppfs_alloc_inode(struct super_block *sb) +{ + struct hppfs_inode_info *hi; + + hi = kmalloc(sizeof(*hi), GFP_KERNEL); + if(hi == NULL) + return(NULL); + + *hi = ((struct hppfs_inode_info) { .proc_dentry = NULL }); + inode_init_once(&hi->vfs_inode); + return(&hi->vfs_inode); +} + +void hppfs_delete_inode(struct inode *ino) +{ + clear_inode(ino); +} + +static void hppfs_destroy_inode(struct inode *inode) +{ + kfree(HPPFS_I(inode)); +} + +static struct super_operations hppfs_sbops = { + .alloc_inode = hppfs_alloc_inode, + .destroy_inode = hppfs_destroy_inode, + .read_inode = hppfs_read_inode, + .delete_inode = hppfs_delete_inode, + .statfs = hppfs_statfs, +}; + +static int hppfs_readlink(struct dentry *dentry, char *buffer, int buflen) +{ + struct file proc_file; + struct dentry *proc_dentry; + int (*readlink)(struct dentry *, char *, int); + int err, n; + + proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry; + err = open_private_file(&proc_file, proc_dentry, O_RDONLY); + if(err) + return(err); + + readlink = proc_dentry->d_inode->i_op->readlink; + n = (*readlink)(proc_dentry, buffer, buflen); + + close_private_file(&proc_file); + + return(n); +} + +static int hppfs_follow_link(struct dentry *dentry, struct nameidata *nd) +{ + struct file proc_file; + struct dentry *proc_dentry; + int (*follow_link)(struct dentry *, struct nameidata *); + int err, n; + + proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry; + err = open_private_file(&proc_file, proc_dentry, O_RDONLY); + if(err) + return(err); + + follow_link = proc_dentry->d_inode->i_op->follow_link; + n = (*follow_link)(proc_dentry, nd); + + close_private_file(&proc_file); + + return(n); +} + +static struct inode_operations hppfs_dir_iops = { + .lookup = hppfs_lookup, +}; + +static struct inode_operations hppfs_link_iops = { + .readlink = hppfs_readlink, + .follow_link = hppfs_follow_link, +}; + +static int init_inode(struct inode *inode, struct dentry *dentry) +{ + if(S_ISDIR(dentry->d_inode->i_mode)){ + inode->i_op = &hppfs_dir_iops; + inode->i_fop = &hppfs_dir_fops; + } + else if(S_ISLNK(dentry->d_inode->i_mode)){ + inode->i_op = &hppfs_link_iops; + inode->i_fop = &hppfs_file_fops; + } + else { + inode->i_op = &hppfs_file_iops; + inode->i_fop = &hppfs_file_fops; + } + + HPPFS_I(inode)->proc_dentry = dentry; + + return(0); +} + +static int hppfs_fill_super(struct super_block *sb, void *d, int silent) +{ + struct inode *root_inode; + struct file_system_type *procfs; + struct super_block *proc_sb; + int err; + + err = -ENOENT; + procfs = get_fs_type("proc"); + if(procfs == NULL) + goto out; + + if(list_empty(&procfs->fs_supers)) + goto out; + + proc_sb = list_entry(procfs->fs_supers.next, struct super_block, + s_instances); + + sb->s_blocksize = 1024; + sb->s_blocksize_bits = 10; + sb->s_magic = HPPFS_SUPER_MAGIC; + sb->s_op = &hppfs_sbops; + + root_inode = iget(sb, 0); + if(root_inode == NULL) + goto out; + + err = init_inode(root_inode, proc_sb->s_root); + if(err) + goto out_put; + + err = -ENOMEM; + sb->s_root = d_alloc_root(root_inode); + if(sb->s_root == NULL) + goto out_put; + + hppfs_read_inode(root_inode); + + return(0); + + out_put: + iput(root_inode); + out: + return(err); +} + +static struct super_block *hppfs_read_super(struct file_system_type *type, + int flags, const char *dev_name, + void *data) +{ + return(get_sb_nodev(type, flags, data, hppfs_fill_super)); +} + +static struct file_system_type hppfs_type = { + .owner = THIS_MODULE, + .name = "hppfs", + .get_sb = hppfs_read_super, + .kill_sb = kill_anon_super, + .fs_flags = 0, +}; + +static int __init init_hppfs(void) +{ + return(register_filesystem(&hppfs_type)); +} + +static void __exit exit_hppfs(void) +{ + unregister_filesystem(&hppfs_type); +} + +module_init(init_hppfs) +module_exit(exit_hppfs) +MODULE_LICENSE("GPL"); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN /dev/null fs/hppfs/Makefile --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/fs/hppfs/Makefile 2004-06-29 21:02:55.760281904 +0200 @@ -0,0 +1,19 @@ +# +# Copyright (C) 2002, 2003 Jeff Dike (jdike@karaya.com) +# Licensed under the GPL +# + +hppfs-objs := hppfs_kern.o + +obj-y = +obj-$(CONFIG_HPPFS) += hppfs.o + +clean: + +modules: + +fastdep: + +dep: + +archmrproper: clean diff -puN fs/Makefile~Main-uml-patch-no-skas fs/Makefile --- uml-linux-2.6.7/fs/Makefile~Main-uml-patch-no-skas 2004-06-29 21:02:55.657297560 +0200 +++ uml-linux-2.6.7-paolo/fs/Makefile 2004-06-29 21:02:55.760281904 +0200 @@ -91,3 +91,5 @@ obj-$(CONFIG_JFS_FS) += jfs/ obj-$(CONFIG_XFS_FS) += xfs/ obj-$(CONFIG_AFS_FS) += afs/ obj-$(CONFIG_BEFS_FS) += befs/ +obj-$(CONFIG_HOSTFS) += hostfs/ +obj-$(CONFIG_HPPFS) += hppfs/ diff -puN include/asm-um/archparam-i386.h~Main-uml-patch-no-skas include/asm-um/archparam-i386.h --- uml-linux-2.6.7/include/asm-um/archparam-i386.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.658297408 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/archparam-i386.h 2004-06-29 21:02:55.760281904 +0200 @@ -1,5 +1,5 @@ /* - * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com) + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -56,6 +56,93 @@ typedef elf_greg_t elf_gregset_t[ELF_NGR pr_reg[16] = PT_REGS_SS(regs); \ } while(0); +#if 0 /* Turn this back on when UML has VSYSCALL working */ +#define VSYSCALL_BASE (__fix_to_virt(FIX_VSYSCALL)) +#else +#define VSYSCALL_BASE 0 +#endif + +#define VSYSCALL_EHDR ((const struct elfhdr *) VSYSCALL_BASE) +#define VSYSCALL_ENTRY ((unsigned long) &__kernel_vsyscall) +extern void *__kernel_vsyscall; + +/* + * Architecture-neutral AT_ values in 0-17, leave some room + * for more of them, start the x86-specific ones at 32. + */ +#define AT_SYSINFO 32 +#define AT_SYSINFO_EHDR 33 + +#define ARCH_DLINFO \ +do { \ + NEW_AUX_ENT(AT_SYSINFO, VSYSCALL_ENTRY); \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, VSYSCALL_BASE); \ +} while (0) + +/* + * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out + * extra segments containing the vsyscall DSO contents. Dumping its + * contents makes post-mortem fully interpretable later without matching up + * the same kernel and hardware config to see what PC values meant. + * Dumping its extra ELF program headers includes all the other information + * a debugger needs to easily find how the vsyscall DSO was being used. + */ +#if 0 +#define ELF_CORE_EXTRA_PHDRS (VSYSCALL_EHDR->e_phnum) +#endif + +#undef ELF_CORE_EXTRA_PHDRS + +#if 0 +#define ELF_CORE_WRITE_EXTRA_PHDRS \ +do { \ + const struct elf_phdr *const vsyscall_phdrs = \ + (const struct elf_phdr *) (VSYSCALL_BASE \ + + VSYSCALL_EHDR->e_phoff); \ + int i; \ + Elf32_Off ofs = 0; \ + for (i = 0; i < VSYSCALL_EHDR->e_phnum; ++i) { \ + struct elf_phdr phdr = vsyscall_phdrs[i]; \ + if (phdr.p_type == PT_LOAD) { \ + ofs = phdr.p_offset = offset; \ + offset += phdr.p_filesz; \ + } \ + else \ + phdr.p_offset += ofs; \ + phdr.p_paddr = 0; /* match other core phdrs */ \ + DUMP_WRITE(&phdr, sizeof(phdr)); \ + } \ +} while (0) +#define ELF_CORE_WRITE_EXTRA_DATA \ +do { \ + const struct elf_phdr *const vsyscall_phdrs = \ + (const struct elf_phdr *) (VSYSCALL_BASE \ + + VSYSCALL_EHDR->e_phoff); \ + int i; \ + for (i = 0; i < VSYSCALL_EHDR->e_phnum; ++i) { \ + if (vsyscall_phdrs[i].p_type == PT_LOAD) \ + DUMP_WRITE((void *) vsyscall_phdrs[i].p_vaddr, \ + vsyscall_phdrs[i].p_filesz); \ + } \ +} while (0) +#endif + +#undef ELF_CORE_WRITE_EXTRA_PHDRS +#undef ELF_CORE_WRITE_EXTRA_DATA + +#define R_386_NONE 0 +#define R_386_32 1 +#define R_386_PC32 2 +#define R_386_GOT32 3 +#define R_386_PLT32 4 +#define R_386_COPY 5 +#define R_386_GLOB_DAT 6 +#define R_386_JMP_SLOT 7 +#define R_386_RELATIVE 8 +#define R_386_GOTOFF 9 +#define R_386_GOTPC 10 +#define R_386_NUM 11 + /********* Bits for asm-um/delay.h **********/ typedef unsigned long um_udelay_t; diff -puN include/asm-um/common.lds.S~Main-uml-patch-no-skas include/asm-um/common.lds.S --- uml-linux-2.6.7/include/asm-um/common.lds.S~Main-uml-patch-no-skas 2004-06-29 21:02:55.659297256 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/common.lds.S 2004-06-29 21:02:55.761281752 +0200 @@ -1,3 +1,5 @@ +#include + .fini : { *(.fini) } =0x9090 _etext = .; PROVIDE (etext = .); @@ -13,18 +15,6 @@ RODATA - __start___ksymtab = .; /* Kernel symbol table */ - __ksymtab : { *(__ksymtab) } - __stop___ksymtab = .; - - __start___gpl_ksymtab = .; /* Kernel symbol table: GPL-only symbols */ - __gpl_ksymtab : { *(__gpl_ksymtab) } - __stop___gpl_ksymtab = .; - - __start___kallsyms = .; /* All kernel symbols */ - __kallsyms : { *(__kallsyms) } - __stop___kallsyms = .; - .unprotected : { *(.unprotected) } . = ALIGN(4096); PROVIDE (_unprotected_end = .); @@ -67,11 +57,17 @@ } __initcall_end = .; + __con_initcall_start = .; + .con_initcall.init : { *(.con_initcall.init) } + __con_initcall_end = .; + __uml_initcall_start = .; .uml.initcall.init : { *(.uml.initcall.init) } __uml_initcall_end = .; __init_end = .; + SECURITY_INIT + __exitcall_begin = .; .exitcall : { *(.exitcall.exit) } __exitcall_end = .; @@ -80,7 +76,33 @@ .uml.exitcall : { *(.uml.exitcall.exit) } __uml_exitcall_end = .; - . = ALIGN(4096); + . = ALIGN(4); + __alt_instructions = .; + .altinstructions : { *(.altinstructions) } + __alt_instructions_end = .; + .altinstr_replacement : { *(.altinstr_replacement) } + /* .exit.text is discard at runtime, not link time, to deal with references + from .altinstructions and .eh_frame */ + .exit.text : { *(.exit.text) } + .exit.data : { *(.exit.data) } + + __preinit_array_start = .; + .preinit_array : { *(.preinit_array) } + __preinit_array_end = .; + __init_array_start = .; + .init_array : { *(.init_array) } + __init_array_end = .; + __fini_array_start = .; + .fini_array : { *(.fini_array) } + __fini_array_end = .; + + . = ALIGN(4096); __initramfs_start = .; .init.ramfs : { *(.init.ramfs) } __initramfs_end = .; + + /* Sections to be discarded */ + /DISCARD/ : { + *(.exitcall.exit) + } + diff -puN /dev/null include/asm-um/cpufeature.h --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/include/asm-um/cpufeature.h 2004-06-29 21:02:55.761281752 +0200 @@ -0,0 +1,6 @@ +#ifndef __UM_CPUFEATURE_H +#define __UM_CPUFEATURE_H + +#include "asm/arch/cpufeature.h" + +#endif diff -puN include/asm-um/current.h~Main-uml-patch-no-skas include/asm-um/current.h --- uml-linux-2.6.7/include/asm-um/current.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.661296952 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/current.h 2004-06-29 21:02:55.761281752 +0200 @@ -16,8 +16,10 @@ struct thread_info; #define CURRENT_THREAD(dummy) (((unsigned long) &dummy) & \ (PAGE_MASK << CONFIG_KERNEL_STACK_ORDER)) -#define current ({ int dummy; \ - ((struct thread_info *) CURRENT_THREAD(dummy))->task; }) +#define current_thread \ + ({ int dummy; ((struct thread_info *) CURRENT_THREAD(dummy)); }) + +#define current (current_thread->task) #endif /* __ASSEMBLY__ */ diff -puN include/asm-um/dma-mapping.h~Main-uml-patch-no-skas include/asm-um/dma-mapping.h --- uml-linux-2.6.7/include/asm-um/dma-mapping.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.662296800 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/dma-mapping.h 2004-06-29 21:02:55.761281752 +0200 @@ -1 +1,119 @@ -#include +#ifndef _ASM_DMA_MAPPING_H +#define _ASM_DMA_MAPPING_H + +static inline int +dma_supported(struct device *dev, u64 mask) +{ + BUG(); + return(0); +} + +static inline int +dma_set_mask(struct device *dev, u64 dma_mask) +{ + BUG(); + return(0); +} + +static inline void * +dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, + int flag) +{ + BUG(); + return((void *) 0); +} + +static inline void +dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, + dma_addr_t dma_handle) +{ + BUG(); +} + +static inline dma_addr_t +dma_map_single(struct device *dev, void *cpu_addr, size_t size, + enum dma_data_direction direction) +{ + BUG(); + return(0); +} + +static inline void +dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, + enum dma_data_direction direction) +{ + BUG(); +} + +static inline dma_addr_t +dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction) +{ + BUG(); + return(0); +} + +static inline void +dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, + enum dma_data_direction direction) +{ + BUG(); +} + +static inline int +dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction direction) +{ + BUG(); + return(0); +} + +static inline void +dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, + enum dma_data_direction direction) +{ + BUG(); +} + +static inline void +dma_sync_single(struct device *dev, dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + BUG(); +} + +static inline void +dma_sync_sg(struct device *dev, struct scatterlist *sg, int nelems, + enum dma_data_direction direction) +{ + BUG(); +} + +#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) +#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) +#define dma_is_consistent(d) (1) + +static inline int +dma_get_cache_alignment(void) +{ + BUG(); + return(0); +} + +static inline void +dma_sync_single_range(struct device *dev, dma_addr_t dma_handle, + unsigned long offset, size_t size, + enum dma_data_direction direction) +{ + BUG(); +} + +static inline void +dma_cache_sync(void *vaddr, size_t size, + enum dma_data_direction direction) +{ + BUG(); +} + +#endif diff -puN include/asm-um/elf.h~Main-uml-patch-no-skas include/asm-um/elf.h --- uml-linux-2.6.7/include/asm-um/elf.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.663296648 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/elf.h 2004-06-29 21:02:55.762281600 +0200 @@ -15,4 +15,17 @@ #define USE_ELF_CORE_DUMP +#define R_386_NONE 0 +#define R_386_32 1 +#define R_386_PC32 2 +#define R_386_GOT32 3 +#define R_386_PLT32 4 +#define R_386_COPY 5 +#define R_386_GLOB_DAT 6 +#define R_386_JMP_SLOT 7 +#define R_386_RELATIVE 8 +#define R_386_GOTOFF 9 +#define R_386_GOTPC 10 +#define R_386_NUM 11 + #endif diff -puN include/asm-um/fixmap.h~Main-uml-patch-no-skas include/asm-um/fixmap.h --- uml-linux-2.6.7/include/asm-um/fixmap.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.664296496 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/fixmap.h 2004-06-29 21:02:55.762281600 +0200 @@ -34,6 +34,7 @@ enum fixed_addresses { FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */ FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1, #endif + FIX_VSYSCALL, __end_of_fixed_addresses }; @@ -63,6 +64,13 @@ extern unsigned long get_kmem_end(void); #define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) #define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT) +/* + * This is the range that is readable by user mode, and things + * acting like user mode such as get_user_pages. + */ +#define FIXADDR_USER_START (__fix_to_virt(FIX_VSYSCALL)) +#define FIXADDR_USER_END (FIXADDR_USER_START + PAGE_SIZE) + extern void __this_fixmap_does_not_exist(void); /* diff -puN include/asm-um/irq.h~Main-uml-patch-no-skas include/asm-um/irq.h --- uml-linux-2.6.7/include/asm-um/irq.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.665296344 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/irq.h 2004-06-29 21:02:55.762281600 +0200 @@ -1,15 +1,6 @@ #ifndef __UM_IRQ_H #define __UM_IRQ_H -/* The i386 irq.h has a struct task_struct in a prototype without including - * sched.h. This forward declaration kills the resulting warning. - */ -struct task_struct; - -#include "asm/ptrace.h" - -#undef NR_IRQS - #define TIMER_IRQ 0 #define UMN_IRQ 1 #define CONSOLE_IRQ 2 @@ -28,13 +19,4 @@ struct task_struct; #define LAST_IRQ XTERM_IRQ #define NR_IRQS (LAST_IRQ + 1) -extern int um_request_irq(unsigned int irq, int fd, int type, - void (*handler)(int, void *, struct pt_regs *), - unsigned long irqflags, const char * devname, - void *dev_id); - -struct irqaction; -struct pt_regs; -int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *); - #endif diff -puN /dev/null include/asm-um/local.h --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/include/asm-um/local.h 2004-06-29 21:02:55.762281600 +0200 @@ -0,0 +1,6 @@ +#ifndef __UM_LOCAL_H +#define __UM_LOCAL_H + +#include "asm/arch/local.h" + +#endif diff -puN /dev/null include/asm-um/module-generic.h --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/include/asm-um/module-generic.h 2004-06-29 21:02:55.762281600 +0200 @@ -0,0 +1,6 @@ +#ifndef __UM_MODULE_GENERIC_H +#define __UM_MODULE_GENERIC_H + +#include "asm/arch/module.h" + +#endif diff -puN /dev/null include/asm-um/module-i386.h --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/include/asm-um/module-i386.h 2004-06-29 21:02:55.763281448 +0200 @@ -0,0 +1,13 @@ +#ifndef __UM_MODULE_I386_H +#define __UM_MODULE_I386_H + +/* UML is simple */ +struct mod_arch_specific +{ +}; + +#define Elf_Shdr Elf32_Shdr +#define Elf_Sym Elf32_Sym +#define Elf_Ehdr Elf32_Ehdr + +#endif diff -puN include/asm-um/page.h~Main-uml-patch-no-skas include/asm-um/page.h --- uml-linux-2.6.7/include/asm-um/page.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.667296040 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/page.h 2004-06-29 21:02:55.763281448 +0200 @@ -1,10 +1,14 @@ +/* + * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + #ifndef __UM_PAGE_H #define __UM_PAGE_H struct page; #include "asm/arch/page.h" -#include "asm/bug.h" #undef __pa #undef __va @@ -24,25 +28,36 @@ extern unsigned long uml_physmem; #define __va_space (8*1024*1024) -extern unsigned long region_pa(void *virt); -extern void *region_va(unsigned long phys); - -#define __pa(virt) region_pa((void *) (virt)) -#define __va(phys) region_va((unsigned long) (phys)) - -extern unsigned long page_to_pfn(struct page *page); -extern struct page *pfn_to_page(unsigned long pfn); +extern unsigned long to_phys(void *virt); +extern void *to_virt(unsigned long phys); -extern struct page *phys_to_page(unsigned long phys); +#define __pa(virt) to_phys((void *) virt) +#define __va(phys) to_virt((unsigned long) phys) -#define virt_to_page(v) (phys_to_page(__pa(v))) +#define page_to_pfn(page) ((page) - mem_map) +#define pfn_to_page(pfn) (mem_map + (pfn)) -extern struct page *page_mem_map(struct page *page); +#define phys_to_pfn(p) ((p) >> PAGE_SHIFT) +#define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) -#define pfn_valid(pfn) (page_mem_map(pfn_to_page(pfn)) != NULL) -#define virt_addr_valid(v) pfn_valid(__pa(v) >> PAGE_SHIFT) +#define pfn_valid(pfn) ((pfn) < max_mapnr) +#define virt_addr_valid(v) pfn_valid(phys_to_pfn(__pa(v))) extern struct page *arch_validate(struct page *page, int mask, int order); #define HAVE_ARCH_VALIDATE +extern void arch_free_page(struct page *page, int order); +#define HAVE_ARCH_FREE_PAGE + #endif + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff -puN include/asm-um/pgtable.h~Main-uml-patch-no-skas include/asm-um/pgtable.h --- uml-linux-2.6.7/include/asm-um/pgtable.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.668295888 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/pgtable.h 2004-06-29 21:02:55.763281448 +0200 @@ -12,8 +12,6 @@ #include "asm/page.h" #include "asm/fixmap.h" -extern pgd_t swapper_pg_dir[1024]; - extern void *um_virt_to_phys(struct task_struct *task, unsigned long virt, pte_t *pte_out); @@ -49,6 +47,8 @@ extern unsigned long *empty_zero_page; #define pgd_ERROR(e) \ printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) +extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; + /* * pgd entries used up by user/kernel: */ @@ -65,10 +65,10 @@ extern unsigned long *empty_zero_page; * area for the same reason. ;) */ -extern unsigned long high_physmem; +extern unsigned long end_iomem; #define VMALLOC_OFFSET (__va_space) -#define VMALLOC_START (((unsigned long) high_physmem + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1)) +#define VMALLOC_START ((end_iomem + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1)) #ifdef CONFIG_HIGHMEM # define VMALLOC_END (PKMAP_BASE-2*PAGE_SIZE) @@ -78,12 +78,13 @@ extern unsigned long high_physmem; #define _PAGE_PRESENT 0x001 #define _PAGE_NEWPAGE 0x002 -#define _PAGE_PROTNONE 0x004 /* If not present */ -#define _PAGE_RW 0x008 -#define _PAGE_USER 0x010 -#define _PAGE_ACCESSED 0x020 -#define _PAGE_DIRTY 0x040 -#define _PAGE_NEWPROT 0x080 +#define _PAGE_NEWPROT 0x004 +#define _PAGE_FILE 0x008 /* set:pagecache unset:swap */ +#define _PAGE_PROTNONE 0x010 /* If not present */ +#define _PAGE_RW 0x020 +#define _PAGE_USER 0x040 +#define _PAGE_ACCESSED 0x080 +#define _PAGE_DIRTY 0x100 #define REGION_MASK 0xf0000000 #define REGION_SHIFT 28 @@ -143,7 +144,8 @@ extern pte_t * __bad_pagetable(void); #define BAD_PAGETABLE __bad_pagetable() #define BAD_PAGE __bad_page() -#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) + +#define ZERO_PAGE(vaddr) virt_to_page(empty_zero_page) /* number of bits that fit into a memory pointer */ #define BITS_PER_PTR (8*sizeof(unsigned long)) @@ -164,9 +166,6 @@ extern pte_t * __bad_pagetable(void); #define pte_clear(xp) do { pte_val(*(xp)) = _PAGE_NEWPAGE; } while (0) -#define phys_region_index(x) (((x) & REGION_MASK) >> REGION_SHIFT) -#define pte_region_index(x) phys_region_index(pte_val(x)) - #define pmd_none(x) (!(pmd_val(x) & ~_PAGE_NEWPAGE)) #define pmd_bad(x) ((pmd_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE) #define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT) @@ -188,19 +187,25 @@ static inline void pgd_clear(pgd_t * pgd #define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT)) -extern struct page *pte_mem_map(pte_t pte); -extern struct page *phys_mem_map(unsigned long phys); -extern unsigned long phys_to_pfn(unsigned long p); -extern unsigned long pfn_to_phys(unsigned long pfn); - -#define pte_page(x) pfn_to_page(pte_pfn(x)) -#define pte_address(x) (__va(pte_val(x) & PAGE_MASK)) -#define mk_phys(a, r) ((a) + (r << REGION_SHIFT)) -#define phys_addr(p) ((p) & ~REGION_MASK) -#define phys_page(p) (phys_mem_map(p) + ((phys_addr(p)) >> PAGE_SHIFT)) +#define pte_page(pte) phys_to_page(pte_val(pte)) +#define pmd_page(pmd) phys_to_page(pmd_val(pmd) & PAGE_MASK) + #define pte_pfn(x) phys_to_pfn(pte_val(x)) #define pfn_pte(pfn, prot) __pte(pfn_to_phys(pfn) | pgprot_val(prot)) -#define pfn_pmd(pfn, prot) __pmd(pfn_to_phys(pfn) | pgprot_val(prot)) + +extern struct page *phys_to_page(const unsigned long phys); +extern struct page *__virt_to_page(const unsigned long virt); +#define virt_to_page(addr) __virt_to_page((const unsigned long) addr) + +/* + * Bits 0 through 3 are taken + */ +#define PTE_FILE_MAX_BITS 28 + +#define pte_to_pgoff(pte) ((pte).pte_low >> 4) + +#define pgoff_to_pte(off) \ + ((pte_t) { ((off) << 4) + _PAGE_FILE }) static inline pte_t pte_mknewprot(pte_t pte) { @@ -235,6 +240,12 @@ static inline void set_pte(pte_t *pteptr * The following only work if pte_present() is true. * Undefined behaviour if not.. */ +static inline int pte_user(pte_t pte) +{ + return((pte_val(pte) & _PAGE_USER) && + !(pte_val(pte) & _PAGE_PROTNONE)); +} + static inline int pte_read(pte_t pte) { return((pte_val(pte) & _PAGE_USER) && @@ -252,6 +263,14 @@ static inline int pte_write(pte_t pte) !(pte_val(pte) & _PAGE_PROTNONE)); } +/* + * The following only works if pte_present() is not true. + */ +static inline int pte_file(pte_t pte) +{ + return (pte).pte_low & _PAGE_FILE; +} + static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; } static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; } static inline int pte_newpage(pte_t pte) { return pte_val(pte) & _PAGE_NEWPAGE; } @@ -334,14 +353,7 @@ extern unsigned long page_to_phys(struct * and a page entry and page directory to the page they refer to. */ -#define mk_pte(page, pgprot) \ -({ \ - pte_t __pte; \ - \ - pte_val(__pte) = page_to_phys(page) + pgprot_val(pgprot);\ - if(pte_present(__pte)) pte_mknewprot(pte_mknewpage(__pte)); \ - __pte; \ -}) +extern pte_t mk_pte(struct page *page, pgprot_t pgprot); static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { @@ -351,17 +363,27 @@ static inline pte_t pte_modify(pte_t pte } #define pmd_page_kernel(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK)) -#define pmd_page(pmd) (phys_mem_map(pmd_val(pmd) & PAGE_MASK) + \ - ((phys_addr(pmd_val(pmd)) >> PAGE_SHIFT))) -/* to find an entry in a page-table-directory. */ +/* + * the pgd page can be thought of an array like this: pgd_t[PTRS_PER_PGD] + * + * this macro returns the index of the entry in the pgd page which would + * control the given virtual address + */ #define pgd_index(address) ((address >> PGDIR_SHIFT) & (PTRS_PER_PGD-1)) -/* to find an entry in a page-table-directory */ +/* + * pgd_offset() returns a (pgd_t *) + * pgd_index() is used get the offset into the pgd page's array of pgd_t's; + */ #define pgd_offset(mm, address) \ ((mm)->pgd + ((address) >> PGDIR_SHIFT)) -/* to find an entry in a kernel page-table-directory */ + +/* + * a shortcut which implies the use of the kernel's pgd, instead + * of a process's + */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) #define pmd_index(address) \ @@ -373,7 +395,12 @@ static inline pmd_t * pmd_offset(pgd_t * return (pmd_t *) dir; } -/* Find an entry in the third-level page table.. */ +/* + * the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE] + * + * this macro returns the index of the entry in the pte page which would + * control the given virtual address + */ #define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) #define pte_offset_kernel(dir, address) \ ((pte_t *) pmd_page_kernel(*(dir)) + pte_index(address)) @@ -387,11 +414,11 @@ static inline pmd_t * pmd_offset(pgd_t * #define update_mmu_cache(vma,address,pte) do ; while (0) /* Encode and de-code a swap entry */ -#define __swp_type(x) (((x).val >> 3) & 0x7f) -#define __swp_offset(x) ((x).val >> 10) +#define __swp_type(x) (((x).val >> 4) & 0x3f) +#define __swp_offset(x) ((x).val >> 11) #define __swp_entry(type, offset) \ - ((swp_entry_t) { ((type) << 3) | ((offset) << 10) }) + ((swp_entry_t) { ((type) << 4) | ((offset) << 11) }) #define __pte_to_swp_entry(pte) \ ((swp_entry_t) { pte_val(pte_mkuptodate(pte)) }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) diff -puN include/asm-um/processor-generic.h~Main-uml-patch-no-skas include/asm-um/processor-generic.h --- uml-linux-2.6.7/include/asm-um/processor-generic.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.669295736 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/processor-generic.h 2004-06-29 21:02:55.764281296 +0200 @@ -11,33 +11,14 @@ struct pt_regs; struct task_struct; #include "linux/config.h" -#include "linux/signal.h" #include "asm/ptrace.h" -#include "asm/siginfo.h" #include "choose-mode.h" struct mm_struct; #define current_text_addr() ((void *) 0) -#define cpu_relax() do ; while (0) - -#ifdef CONFIG_MODE_TT -struct proc_tt_mode { - int extern_pid; - int tracing; - int switch_pipe[2]; - int singlestep_syscall; - int vm_seq; -}; -#endif - -#ifdef CONFIG_MODE_SKAS -struct proc_skas_mode { - void *switch_buf; - void *fork_buf; -}; -#endif +#define cpu_relax() barrier() struct thread_struct { int forking; @@ -46,6 +27,7 @@ struct thread_struct { struct pt_regs regs; unsigned long cr2; int err; + unsigned long trap_no; void *fault_addr; void *fault_catcher; struct task_struct *prev_sched; @@ -54,10 +36,20 @@ struct thread_struct { struct arch_thread arch; union { #ifdef CONFIG_MODE_TT - struct proc_tt_mode tt; + struct { + int extern_pid; + int tracing; + int switch_pipe[2]; + int singlestep_syscall; + int vm_seq; + } tt; #endif #ifdef CONFIG_MODE_SKAS - struct proc_skas_mode skas; + struct { + void *switch_buf; + void *fork_buf; + int mm_count; + } skas; #endif } mode; struct { @@ -99,14 +91,19 @@ typedef struct { } mm_segment_t; extern struct task_struct *alloc_task_struct(void); -extern void free_task_struct(struct task_struct *task); extern void release_thread(struct task_struct *); extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); extern void dump_thread(struct pt_regs *regs, struct user *u); +extern void prepare_to_copy(struct task_struct *tsk); extern unsigned long thread_saved_pc(struct task_struct *t); +static inline void mm_copy_segments(struct mm_struct *from_mm, + struct mm_struct *new_mm) +{ +} + #define init_stack (init_thread_union.stack) /* diff -puN include/asm-um/processor-i386.h~Main-uml-patch-no-skas include/asm-um/processor-i386.h --- uml-linux-2.6.7/include/asm-um/processor-i386.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.670295584 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/processor-i386.h 2004-06-29 21:02:55.764281296 +0200 @@ -6,8 +6,8 @@ #ifndef __UM_PROCESSOR_I386_H #define __UM_PROCESSOR_I386_H -extern int cpu_has_xmm; -extern int cpu_has_cmov; +extern int host_has_xmm; +extern int host_has_cmov; struct arch_thread { unsigned long debugregs[8]; diff -puN /dev/null include/asm-um/sections.h --- /dev/null 1970-01-01 01:00:00.000000000 +0100 +++ uml-linux-2.6.7-paolo/include/asm-um/sections.h 2004-06-29 21:02:55.764281296 +0200 @@ -0,0 +1,7 @@ +#ifndef _UM_SECTIONS_H +#define _UM_SECTIONS_H + +/* nothing to see, move along */ +#include + +#endif diff -puN include/asm-um/smp.h~Main-uml-patch-no-skas include/asm-um/smp.h --- uml-linux-2.6.7/include/asm-um/smp.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.672295280 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/smp.h 2004-06-29 21:02:55.764281296 +0200 @@ -10,7 +10,7 @@ extern cpumask_t cpu_online_map; -#define smp_processor_id() (current->thread_info->cpu) +#define smp_processor_id() (current_thread->cpu) #define cpu_logical_map(n) (n) #define cpu_number_map(n) (n) #define PROC_CHANGE_PENALTY 15 /* Pick a number, any number */ diff -L include/asm-um/smplock.h -puN include/asm-um/smplock.h~Main-uml-patch-no-skas /dev/null --- uml-linux-2.6.7/include/asm-um/smplock.h +++ /dev/null 1970-01-01 01:00:00.000000000 +0100 @@ -1,6 +0,0 @@ -#ifndef __UM_SMPLOCK_H -#define __UM_SMPLOCK_H - -#include "asm/arch/smplock.h" - -#endif diff -L include/asm-um/spinlock.h -puN include/asm-um/spinlock.h~Main-uml-patch-no-skas /dev/null --- uml-linux-2.6.7/include/asm-um/spinlock.h +++ /dev/null 1970-01-01 01:00:00.000000000 +0100 @@ -1,10 +0,0 @@ -#ifndef __UM_SPINLOCK_H -#define __UM_SPINLOCK_H - -#include "linux/config.h" - -#ifdef CONFIG_SMP -#include "asm/arch/spinlock.h" -#endif - -#endif diff -puN include/asm-um/system-generic.h~Main-uml-patch-no-skas include/asm-um/system-generic.h --- uml-linux-2.6.7/include/asm-um/system-generic.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.675294824 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/system-generic.h 2004-06-29 21:02:55.765281144 +0200 @@ -23,8 +23,10 @@ extern int get_signals(void); extern void block_signals(void); extern void unblock_signals(void); -#define local_save_flags(flags) do { (flags) = get_signals(); } while(0) -#define local_irq_restore(flags) do { set_signals(flags); } while(0) +#define local_save_flags(flags) do { typecheck(unsigned long, flags); \ + (flags) = get_signals(); } while(0) +#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \ + set_signals(flags); } while(0) #define local_irq_save(flags) do { local_save_flags(flags); \ local_irq_disable(); } while(0) @@ -39,4 +41,7 @@ extern void unblock_signals(void); (flags == 0); \ }) +extern void *_switch_to(void *prev, void *next, void *last); +#define switch_to(prev, next, last) prev = _switch_to(prev, next, last) + #endif diff -puN include/asm-um/system-i386.h~Main-uml-patch-no-skas include/asm-um/system-i386.h --- uml-linux-2.6.7/include/asm-um/system-i386.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.676294672 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/system-i386.h 2004-06-29 21:02:55.765281144 +0200 @@ -2,36 +2,5 @@ #define __UM_SYSTEM_I386_H #include "asm/system-generic.h" - -static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old, - unsigned long new, int size) -{ - unsigned long prev; - switch (size) { - case 1: - __asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2" - : "=a"(prev) - : "q"(new), "m"(*__xg(ptr)), "0"(old) - : "memory"); - return prev; - case 2: - __asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2" - : "=a"(prev) - : "q"(new), "m"(*__xg(ptr)), "0"(old) - : "memory"); - return prev; - case 4: - __asm__ __volatile__(LOCK_PREFIX "cmpxchgl %1,%2" - : "=a"(prev) - : "q"(new), "m"(*__xg(ptr)), "0"(old) - : "memory"); - return prev; - } - return old; -} - -#define cmpxchg(ptr,o,n)\ - ((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\ - (unsigned long)(n),sizeof(*(ptr)))) #endif diff -puN include/asm-um/thread_info.h~Main-uml-patch-no-skas include/asm-um/thread_info.h --- uml-linux-2.6.7/include/asm-um/thread_info.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.677294520 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/thread_info.h 2004-06-29 21:02:55.765281144 +0200 @@ -9,6 +9,7 @@ #ifndef __ASSEMBLY__ #include +#include struct thread_info { struct task_struct *task; /* main task structure */ @@ -43,15 +44,18 @@ struct thread_info { static inline struct thread_info *current_thread_info(void) { struct thread_info *ti; - __asm__("andl %%esp,%0; ":"=r" (ti) : "0" (~16383UL)); + unsigned long mask = PAGE_SIZE * + (1 << CONFIG_KERNEL_STACK_ORDER) - 1; + __asm__("andl %%esp,%0; ":"=r" (ti) : "0" (~mask)); return ti; } /* thread information allocation */ -#define THREAD_SIZE (4*PAGE_SIZE) -#define alloc_thread_info(tsk) ((struct thread_info *) \ - __get_free_pages(GFP_KERNEL,2)) -#define free_thread_info(ti) free_pages((unsigned long) (ti), 2) +#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE) +#define alloc_thread_info(tsk) \ + ((struct thread_info *) kmalloc(THREAD_SIZE, GFP_KERNEL)) +#define free_thread_info(ti) kfree(ti) + #define get_thread_info(ti) get_task_struct((ti)->task) #define put_thread_info(ti) put_task_struct((ti)->task) @@ -65,11 +69,13 @@ static inline struct thread_info *curren #define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling * TIF_NEED_RESCHED */ +#define TIF_RESTART_BLOCK 4 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) +#define _TIF_RESTART_BLOCK (1 << TIF_RESTART_BLOCK) #endif diff -puN include/asm-um/timex.h~Main-uml-patch-no-skas include/asm-um/timex.h --- uml-linux-2.6.7/include/asm-um/timex.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.678294368 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/timex.h 2004-06-29 21:02:55.766280992 +0200 @@ -1,8 +1,6 @@ #ifndef __UM_TIMEX_H #define __UM_TIMEX_H -#include "linux/time.h" - typedef unsigned long cycles_t; #define cacheflush_time (0) diff -puN include/asm-um/uaccess.h~Main-uml-patch-no-skas include/asm-um/uaccess.h --- uml-linux-2.6.7/include/asm-um/uaccess.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.680294064 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/uaccess.h 2004-06-29 21:02:55.766280992 +0200 @@ -6,6 +6,8 @@ #ifndef __UM_UACCESS_H #define __UM_UACCESS_H +#include "linux/sched.h" + #define VERIFY_READ 0 #define VERIFY_WRITE 1 diff -puN include/asm-um/unistd.h~Main-uml-patch-no-skas include/asm-um/unistd.h --- uml-linux-2.6.7/include/asm-um/unistd.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.681293912 +0200 +++ uml-linux-2.6.7-paolo/include/asm-um/unistd.h 2004-06-29 21:02:55.766280992 +0200 @@ -48,7 +48,10 @@ extern int um_execve(const char *file, c set_fs(KERNEL_DS); \ ret = sys(args); \ set_fs(fs); \ - return ret; + if (ret >= 0) \ + return ret; \ + errno = -(long)ret; \ + return -1; static inline long open(const char *pathname, int flags, int mode) { diff -puN include/linux/gfp.h~Main-uml-patch-no-skas include/linux/gfp.h --- uml-linux-2.6.7/include/linux/gfp.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.697291480 +0200 +++ uml-linux-2.6.7-paolo/include/linux/gfp.h 2004-06-29 21:02:55.766280992 +0200 @@ -73,6 +73,11 @@ struct vm_area_struct; * For the normal case of non-DISCONTIGMEM systems the NODE_DATA() gets * optimized to &contig_page_data at compile-time. */ + +#ifndef HAVE_ARCH_FREE_PAGE +static inline void arch_free_page(struct page *page, int order) { } +#endif + extern struct page * FASTCALL(__alloc_pages(unsigned int, unsigned int, struct zonelist *)); diff -puN include/linux/time.h~Main-uml-patch-no-skas include/linux/time.h --- uml-linux-2.6.7/include/linux/time.h~Main-uml-patch-no-skas 2004-06-29 21:02:55.698291328 +0200 +++ uml-linux-2.6.7-paolo/include/linux/time.h 2004-06-29 21:02:55.767280840 +0200 @@ -41,7 +41,7 @@ struct timezone { * Have the 32 bit jiffies value wrap 5 minutes after boot * so jiffies wrap bugs show up earlier. */ -#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ)) +#define INITIAL_JIFFIES ((unsigned long)(0)) /* * Change timeval to jiffies, trying to avoid the diff -puN mm/page_alloc.c~Main-uml-patch-no-skas mm/page_alloc.c --- uml-linux-2.6.7/mm/page_alloc.c~Main-uml-patch-no-skas 2004-06-29 21:02:55.699291176 +0200 +++ uml-linux-2.6.7-paolo/mm/page_alloc.c 2004-06-29 21:02:55.767280840 +0200 @@ -279,6 +279,8 @@ void __free_pages_ok(struct page *page, LIST_HEAD(list); int i; + arch_free_page(page, order); + mod_page_state(pgfree, 1 << order); for (i = 0 ; i < (1 << order) ; ++i) free_pages_check(__FUNCTION__, page + i); @@ -497,6 +499,8 @@ static void fastcall free_hot_cold_page( struct per_cpu_pages *pcp; unsigned long flags; + arch_free_page(page, 0); + kernel_map_pages(page, 1, 0); inc_page_state(pgfree); free_pages_check(__FUNCTION__, page); _