Noteworthy changes in release 4.11 (2015-12-21)
===============================================
* Changes in behavior
* Some syscalls have different names depending on architecture and
personality. In these cases, syscall filtering and printing now
consistently uses the names that match corresponding __NR_* kernel
macros of the tracee's architecture and personality.
* Added strace prefix to all diagnostic messages.
* Improvements
* Enhanced and extended test suite.
* Implemented reliable tracing of processes whose personality differs
from the personality of strace, fixed decoding of 32-bit personality
syscalls on 64-bit architectures.
* When some data referenced by syscall arguments is irrelevant or cannot
be read from tracee's memory, strace now prints its address consistently.
* When a syscall is restarted using restart_syscall mechanism, strace now
shows the syscall name on architectures that expose this information.
* Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
* Optimized decoding of indirect socket syscalls.
* Implemented decoding of nanoseconds along with seconds in stat family
syscalls (addresses Fedora bug #1251176).
* Implemented decoding of struct statfs.f_flags in statfs syscall.
* Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
in SIGSYS signal.
* Implemented decoding of indirect syscall on mips o32.
* Implemented decoding of IPPROTO_IP control messages.
* Implemented decoding of setsockopt syscall multicast arguments.
* Enhanced decoding of struct sigevent.
* Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
and v4l2 ioctl syscall arguments.
* Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
sendfile, setsockopt, and shmctl syscalls.
* Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
* Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
constants.
* Added Nios II architecture support.
* Added new syscall entries to match Linux 4.4.
* Bug fixes
* Fixed potential short read of strings from tracee's memory.
* Fixed -qq option in conjunction with -o option.
* Fixed filtering of <unavailable> syscalls.
* Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
with 64-bit aligned structures.
* Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
syscall flags arguments.
* Fixed decoding of 4th argument of clock_nanosleep syscall.
* Fixed decoding of getpagesize syscall on m68k.
* Fixed decoding of getrandom and seccomp syscalls on aarch64.
* Fixed decoding of timezone argument of gettimeofday and settimeofday
* syscalls.
* Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
and sparc64.
* Fixed decoding of pipe syscall on alpha and mips.
* Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
* Fixed decoding of signal mask argument of pselect6 syscall on x32.
* Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
and x32.
* Fixed decoding of 4th argument of semctl indirect syscall.
* Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
* Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
* Fixed decoding of struct dirent on x32.
* Fixed decoding of times syscall return value on mips n32 and x32.
* Fixed decoding of path argument of umount2 syscall
(addresses Debian bug #785050).
* Worked around a kernel bug in tracing privileged executables.
* Fixed various errors in mapping between syscall numbers and associated
information like the number of syscall arguments, the name of syscall,
and syscall decoder.
Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Ross Burton <ross.burton@intel.com>