From 3fbd828c6fdcd947ec735c38ca9f700701d1354d Mon Sep 17 00:00:00 2001 From: Stelios Koroneos Date: Sun, 6 May 2007 16:47:53 +0000 Subject: packages/linux/linux-magicbox_2.6.19.2.bb: Add kernel 2.6.19.2 for Magicbox The patch set comes from Openwrt project --- .../linux/linux-magicbox-2.6.19.2/.mtn2git_empty | 0 .../001-magicbox_support.patch | 372 + .../linux-magicbox-2.6.19.2/001-squashfs.patch | 4170 ++++++ .../linux-magicbox-2.6.19.2/002-flash_map.patch | 147 + .../002-lzma_decompress.patch | 780 ++ .../003-squashfs_lzma.patch | 109 + .../004-extra_optimization.patch | 13 + .../006-gcc4_inline_fix.patch | 12 + .../007-samsung_flash.patch | 37 + .../009-revert_intel_flash_breakage.patch | 169 + .../010-disable_old_squashfs_compatibility.patch | 21 + .../linux-magicbox-2.6.19.2/011-mips_boot.patch | 14 + .../linux-magicbox-2.6.19.2/012-mips_cpu_tlb.patch | 20 + .../050-mtdpart_redboot_partition_truncate.patch | 61 + .../linux-magicbox-2.6.19.2/060-rootfs_split.patch | 414 + .../065-block2mtd_init.patch | 112 + .../linux-magicbox-2.6.19.2/100-cf_slot.patch | 2306 ++++ .../100-netfilter_layer7_2.8.patch | 2053 +++ .../101-netfilter_layer7_pktmatch.patch | 108 + .../110-ipp2p_0.8.1rc1.patch | 948 ++ .../120-openswan-2.4.0.kernel-2.6-natt.patch | 171 + .../130-netfilter-ipset.patch | 5851 +++++++++ .../140-netfilter_time.patch | 241 + .../150-netfilter_imq.patch | 892 ++ .../160-netfilter_route.patch | 902 ++ .../170-netfilter_chaostables.patch | 880 ++ .../linux-magicbox-2.6.19.2/200-sched_esfq.patch | 730 ++ .../201-multiple_default_gateways.patch | 1243 ++ .../202-mips-freestanding.patch | 13 + .../204-jffs2_eofdetect.patch | 58 + .../207-powerpc_asm_segment_h.patch | 10 + .../208-rtl8110sb_fix.patch | 25 + .../linux-magicbox-2.6.19.2/209-mini_fo.patch | 7807 +++++++++++ .../210-d80211_compat.patch | 11 + .../211-no_block2mtd_readahead.patch | 11 + .../212-block2mtd_erase_scan.patch | 11 + .../linux/linux-magicbox-2.6.19.2/510-Yaffs.patch | 13085 +++++++++++++++++++ .../linux-magicbox-2.6.19.2/600-x86_lzma.patch | 1167 ++ .../linux-magicbox-2.6.19.2/700-airprime.patch | 12 + .../900-headers_type_and_time.patch | 48 + .../901-asm_bitops_include.patch | 11 + .../902-darwin_scripts_include.patch | 145 + .../903-stddef_include.patch | 17 + .../904-ls_time_locale.patch | 24 + .../linux/linux-magicbox-2.6.19.2/config-magicbox2 | 1619 +++ packages/linux/linux-magicbox_2.6.19.2.bb | 112 + 46 files changed, 46962 insertions(+) create mode 100644 packages/linux/linux-magicbox-2.6.19.2/.mtn2git_empty create mode 100644 packages/linux/linux-magicbox-2.6.19.2/001-magicbox_support.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/001-squashfs.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/002-flash_map.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/002-lzma_decompress.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/003-squashfs_lzma.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/004-extra_optimization.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/006-gcc4_inline_fix.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/007-samsung_flash.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/009-revert_intel_flash_breakage.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/010-disable_old_squashfs_compatibility.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/011-mips_boot.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/012-mips_cpu_tlb.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/050-mtdpart_redboot_partition_truncate.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/060-rootfs_split.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/065-block2mtd_init.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/100-cf_slot.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/100-netfilter_layer7_2.8.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/101-netfilter_layer7_pktmatch.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/110-ipp2p_0.8.1rc1.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/120-openswan-2.4.0.kernel-2.6-natt.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/130-netfilter-ipset.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/140-netfilter_time.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/150-netfilter_imq.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/160-netfilter_route.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/170-netfilter_chaostables.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/200-sched_esfq.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/201-multiple_default_gateways.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/202-mips-freestanding.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/204-jffs2_eofdetect.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/207-powerpc_asm_segment_h.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/208-rtl8110sb_fix.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/209-mini_fo.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/210-d80211_compat.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/211-no_block2mtd_readahead.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/212-block2mtd_erase_scan.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/510-Yaffs.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/600-x86_lzma.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/700-airprime.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/900-headers_type_and_time.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/901-asm_bitops_include.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/902-darwin_scripts_include.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/903-stddef_include.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/904-ls_time_locale.patch create mode 100644 packages/linux/linux-magicbox-2.6.19.2/config-magicbox2 create mode 100644 packages/linux/linux-magicbox_2.6.19.2.bb (limited to 'packages/linux') diff --git a/packages/linux/linux-magicbox-2.6.19.2/.mtn2git_empty b/packages/linux/linux-magicbox-2.6.19.2/.mtn2git_empty new file mode 100644 index 0000000000..e69de29bb2 diff --git a/packages/linux/linux-magicbox-2.6.19.2/001-magicbox_support.patch b/packages/linux/linux-magicbox-2.6.19.2/001-magicbox_support.patch new file mode 100644 index 0000000000..7c609e5d02 --- /dev/null +++ b/packages/linux/linux-magicbox-2.6.19.2/001-magicbox_support.patch @@ -0,0 +1,372 @@ +diff -urN linux.old/arch/ppc/platforms/4xx/Kconfig linux.dev/arch/ppc/platforms/4xx/Kconfig +--- linux.old/arch/ppc/platforms/4xx/Kconfig 2006-11-29 22:57:37.000000000 +0100 ++++ linux.dev/arch/ppc/platforms/4xx/Kconfig 2006-12-14 08:49:18.000000000 +0100 +@@ -52,6 +52,12 @@ + help + This option enables support for the IBM PPC405GP evaluation board. + ++config MAGICBOX ++ bool "MagicBox" ++ select WANT_EARLY_SERIAL ++ help ++ This option enables support for the IBM PPC405EP evaluation board. ++ + config XILINX_ML300 + bool "Xilinx-ML300" + help +@@ -173,7 +179,7 @@ + + config IBM_OCP + bool +- depends on ASH || BAMBOO || BUBINGA || CPCI405 || EBONY || EP405 || LUAN || YUCCA || OCOTEA || REDWOOD_5 || REDWOOD_6 || SYCAMORE || WALNUT ++ depends on ASH || BAMBOO || BUBINGA || CPCI405 || EBONY || EP405 || LUAN || YUCCA || OCOTEA || REDWOOD_5 || REDWOOD_6 || SYCAMORE || WALNUT || MAGICBOX + default y + + config IBM_EMAC4 +@@ -183,7 +189,7 @@ + + config BIOS_FIXUP + bool +- depends on BUBINGA || EP405 || SYCAMORE || WALNUT || CPCI405 ++ depends on BUBINGA || EP405 || SYCAMORE || WALNUT || CPCI405 || MAGICBOX + default y + + # OAK doesn't exist but wanted to keep this around for any future 403GCX boards +@@ -194,7 +200,7 @@ + + config 405EP + bool +- depends on BUBINGA ++ depends on BUBINGA || MAGICBOX + default y + + config 405GP +diff -urN linux.old/arch/ppc/platforms/4xx/magicbox.c linux.dev/arch/ppc/platforms/4xx/magicbox.c +--- linux.old/arch/ppc/platforms/4xx/magicbox.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/arch/ppc/platforms/4xx/magicbox.c 2006-12-14 08:48:56.000000000 +0100 +@@ -0,0 +1,249 @@ ++/* ++ * Support for IBM PPC 405EP-based MagicBox board ++ * Copyright (C) 2006 Karol Lewandowski ++ * ++ * Heavily based on bubinga.c ++ * ++ * Author: SAW (IBM), derived from walnut.c. ++ * Maintained by MontaVista Software ++ * ++ * 2003 (c) MontaVista Softare Inc. This file is licensed under the ++ * terms of the GNU General Public License version 2. This program is ++ * licensed "as is" without any warranty of any kind, whether express ++ * or implied. ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#include ++ ++#undef DEBUG ++ ++#ifdef DEBUG ++#define DBG(x...) printk(x) ++#else ++#define DBG(x...) ++#endif ++ ++extern bd_t __res; ++ ++/* Some IRQs unique to board ++ * Used by the generic 405 PCI setup functions in ppc4xx_pci.c ++ */ ++int __init ++ppc405_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) ++{ ++ static char pci_irq_table[][4] = ++ /* ++ * PCI IDSEL/INTPIN->INTLINE ++ * A B C D ++ */ ++ { ++ {28, 28, 28, 28}, /* IDSEL 1 - PCI slot 1 */ ++ {29, 29, 29, 29}, /* IDSEL 2 - PCI slot 2 */ ++ {30, 30, 30, 30}, /* IDSEL 3 - PCI slot 3 */ ++ {31, 31, 31, 31}, /* IDSEL 4 - PCI slot 4 */ ++ }; ++ ++ const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4; ++ return PCI_IRQ_TABLE_LOOKUP; ++}; ++ ++ ++/* The serial clock for the chip is an internal clock determined by ++ * different clock speeds/dividers. ++ * Calculate the proper input baud rate and setup the serial driver. ++ */ ++static void __init ++magicbox_early_serial_map(void) ++{ ++ u32 uart_div; ++ int uart_clock; ++ struct uart_port port; ++ ++ /* Calculate the serial clock input frequency ++ * ++ * The base baud is the PLL OUTA (provided in the board info ++ * structure) divided by the external UART Divisor, divided ++ * by 16. ++ */ ++ uart_div = (mfdcr(DCRN_CPC0_UCR_BASE) & DCRN_CPC0_UCR_U0DIV); ++ uart_clock = __res.bi_procfreq / uart_div; ++ ++ /* Setup serial port access */ ++ memset(&port, 0, sizeof(port)); ++ port.membase = (void*)ACTING_UART0_IO_BASE; ++ port.irq = ACTING_UART0_INT; ++ port.uartclk = uart_clock; ++ port.regshift = 0; ++ port.iotype = SERIAL_IO_MEM; ++ port.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST; ++ port.line = 0; ++ ++ if (early_serial_setup(&port) != 0) { ++ printk("Early serial init of port 0 failed\n"); ++ } ++ ++ port.membase = (void*)ACTING_UART1_IO_BASE; ++ port.irq = ACTING_UART1_INT; ++ port.line = 1; ++ ++ if (early_serial_setup(&port) != 0) { ++ printk("Early serial init of port 1 failed\n"); ++ } ++} ++ ++void __init ++bios_fixup(struct pci_controller *hose, struct pcil0_regs *pcip) ++{ ++ unsigned int bar_response, bar; ++ /* ++ * Expected PCI mapping: ++ * ++ * PLB addr PCI memory addr ++ * --------------------- --------------------- ++ * 0000'0000 - 7fff'ffff <--- 0000'0000 - 7fff'ffff ++ * 8000'0000 - Bfff'ffff ---> 8000'0000 - Bfff'ffff ++ * ++ * PLB addr PCI io addr ++ * --------------------- --------------------- ++ * e800'0000 - e800'ffff ---> 0000'0000 - 0001'0000 ++ * ++ * The following code is simplified by assuming that the bootrom ++ * has been well behaved in following this mapping. ++ */ ++ ++#ifdef DEBUG ++ int i; ++ ++ printk("ioremap PCLIO_BASE = 0x%x\n", pcip); ++ printk("PCI bridge regs before fixup \n"); ++ for (i = 0; i <= 3; i++) { ++ printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].ma))); ++ printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].la))); ++ printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pcila))); ++ printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pciha))); ++ } ++ printk(" ptm1ms\t0x%x\n", in_le32(&(pcip->ptm1ms))); ++ printk(" ptm1la\t0x%x\n", in_le32(&(pcip->ptm1la))); ++ printk(" ptm2ms\t0x%x\n", in_le32(&(pcip->ptm2ms))); ++ printk(" ptm2la\t0x%x\n", in_le32(&(pcip->ptm2la))); ++ ++#endif ++ ++ /* added for IBM boot rom version 1.15 bios bar changes -AK */ ++ ++ /* Disable region first */ ++ out_le32((void *) &(pcip->pmm[0].ma), 0x00000000); ++ /* PLB starting addr, PCI: 0x80000000 */ ++ out_le32((void *) &(pcip->pmm[0].la), 0x80000000); ++ /* PCI start addr, 0x80000000 */ ++ out_le32((void *) &(pcip->pmm[0].pcila), PPC405_PCI_MEM_BASE); ++ /* 512MB range of PLB to PCI */ ++ out_le32((void *) &(pcip->pmm[0].pciha), 0x00000000); ++ /* Enable no pre-fetch, enable region */ ++ out_le32((void *) &(pcip->pmm[0].ma), ((0xffffffff - ++ (PPC405_PCI_UPPER_MEM - ++ PPC405_PCI_MEM_BASE)) | 0x01)); ++ ++ /* Disable region one */ ++ out_le32((void *) &(pcip->pmm[1].ma), 0x00000000); ++ out_le32((void *) &(pcip->pmm[1].la), 0x00000000); ++ out_le32((void *) &(pcip->pmm[1].pcila), 0x00000000); ++ out_le32((void *) &(pcip->pmm[1].pciha), 0x00000000); ++ out_le32((void *) &(pcip->pmm[1].ma), 0x00000000); ++ out_le32((void *) &(pcip->ptm1ms), 0x00000001); ++ ++ /* Disable region two */ ++ out_le32((void *) &(pcip->pmm[2].ma), 0x00000000); ++ out_le32((void *) &(pcip->pmm[2].la), 0x00000000); ++ out_le32((void *) &(pcip->pmm[2].pcila), 0x00000000); ++ out_le32((void *) &(pcip->pmm[2].pciha), 0x00000000); ++ out_le32((void *) &(pcip->pmm[2].ma), 0x00000000); ++ out_le32((void *) &(pcip->ptm2ms), 0x00000000); ++ out_le32((void *) &(pcip->ptm2la), 0x00000000); ++ ++ /* Zero config bars */ ++ for (bar = PCI_BASE_ADDRESS_1; bar <= PCI_BASE_ADDRESS_2; bar += 4) { ++ early_write_config_dword(hose, hose->first_busno, ++ PCI_FUNC(hose->first_busno), bar, ++ 0x00000000); ++ early_read_config_dword(hose, hose->first_busno, ++ PCI_FUNC(hose->first_busno), bar, ++ &bar_response); ++ DBG("BUS %d, device %d, Function %d bar 0x%8.8x is 0x%8.8x\n", ++ hose->first_busno, PCI_SLOT(hose->first_busno), ++ PCI_FUNC(hose->first_busno), bar, bar_response); ++ } ++ /* end work arround */ ++ ++#ifdef DEBUG ++ printk("PCI bridge regs after fixup \n"); ++ for (i = 0; i <= 3; i++) { ++ printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].ma))); ++ printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].la))); ++ printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pcila))); ++ printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pciha))); ++ } ++ printk(" ptm1ms\t0x%x\n", in_le32(&(pcip->ptm1ms))); ++ printk(" ptm1la\t0x%x\n", in_le32(&(pcip->ptm1la))); ++ printk(" ptm2ms\t0x%x\n", in_le32(&(pcip->ptm2ms))); ++ printk(" ptm2la\t0x%x\n", in_le32(&(pcip->ptm2la))); ++ ++#endif /* DEBUG */ ++} ++ ++void __init ++magicbox_setup_arch(void) ++{ ++ ppc4xx_setup_arch(); ++ ++ ibm_ocp_set_emac(0, 1); ++ ++ magicbox_early_serial_map(); ++ ++ /* Identify the system */ ++ printk("MagicBox port (C) 2005 Karol Lewandowski \n"); ++} ++ ++void __init ++magicbox_map_io(void) ++{ ++ ppc4xx_map_io(); ++} ++ ++void __init ++platform_init(unsigned long r3, unsigned long r4, unsigned long r5, ++ unsigned long r6, unsigned long r7) ++{ ++ ppc4xx_init(r3, r4, r5, r6, r7); ++ ++ ppc_md.setup_arch = magicbox_setup_arch; ++ ppc_md.setup_io_mappings = magicbox_map_io; ++ ++#ifdef CONFIG_KGDB ++ ppc_md.early_serial_map = bubinga_early_serial_map; ++#endif ++ ++} +diff -urN linux.old/arch/ppc/platforms/4xx/magicbox.h linux.dev/arch/ppc/platforms/4xx/magicbox.h +--- linux.old/arch/ppc/platforms/4xx/magicbox.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/arch/ppc/platforms/4xx/magicbox.h 2006-12-14 08:48:56.000000000 +0100 +@@ -0,0 +1,47 @@ ++/* ++ * Support for IBM PPC 405EP-based MagicBox board ++ * ++ * Heavily based on bubinga.h ++ * ++ * ++ * Author: SAW (IBM), derived from walnut.h. ++ * Maintained by MontaVista Software ++ * ++ * 2003 (c) MontaVista Softare Inc. This file is licensed under the ++ * terms of the GNU General Public License version 2. This program is ++ * licensed "as is" without any warranty of any kind, whether express ++ * or implied. ++ */ ++ ++#ifdef __KERNEL__ ++#ifndef __MAGICBOX_H__ ++#define __MAGICBOX_H__ ++ ++#include ++#include ++#include ++ ++/* Memory map for the "MagicBox" 405EP evaluation board -- generic 4xx. */ ++ ++/* The UART clock is based off an internal clock - ++ * define BASE_BAUD based on the internal clock and divider(s). ++ * Since BASE_BAUD must be a constant, we will initialize it ++ * using clock/divider values which OpenBIOS initializes ++ * for typical configurations at various CPU speeds. ++ * The base baud is calculated as (FWDA / EXT UART DIV / 16) ++ */ ++#define BASE_BAUD 0 ++ ++/* Flash */ ++#define PPC40x_FPGA_BASE 0xF0300000 ++#define PPC40x_FPGA_REG_OFFS 1 /* offset to flash map reg */ ++#define PPC40x_FLASH_ONBD_N(x) (x & 0x02) ++#define PPC40x_FLASH_SRAM_SEL(x) (x & 0x01) ++#define PPC40x_FLASH_LOW 0xFFF00000 ++#define PPC40x_FLASH_HIGH 0xFFF80000 ++#define PPC40x_FLASH_SIZE 0x80000 ++ ++#define PPC4xx_MACHINE_NAME "MagicBox" ++ ++#endif /* __MAGICBOX_H__ */ ++#endif /* __KERNEL__ */ +diff -urN linux.old/arch/ppc/platforms/4xx/Makefile linux.dev/arch/ppc/platforms/4xx/Makefile +--- linux.old/arch/ppc/platforms/4xx/Makefile 2006-11-29 22:57:37.000000000 +0100 ++++ linux.dev/arch/ppc/platforms/4xx/Makefile 2006-12-14 08:48:56.000000000 +0100 +@@ -13,6 +13,7 @@ + obj-$(CONFIG_REDWOOD_6) += redwood6.o + obj-$(CONFIG_SYCAMORE) += sycamore.o + obj-$(CONFIG_WALNUT) += walnut.o ++obj-$(CONFIG_MAGICBOX) += magicbox.o + obj-$(CONFIG_XILINX_ML300) += xilinx_ml300.o + obj-$(CONFIG_XILINX_ML403) += xilinx_ml403.o + +diff -urN linux.old/include/asm-ppc/ibm4xx.h linux.dev/include/asm-ppc/ibm4xx.h +--- linux.old/include/asm-ppc/ibm4xx.h 2006-11-29 22:57:37.000000000 +0100 ++++ linux.dev/include/asm-ppc/ibm4xx.h 2006-12-14 08:48:56.000000000 +0100 +@@ -18,6 +18,10 @@ + + #ifdef CONFIG_40x + ++#if defined(CONFIG_MAGICBOX) ++#include ++#endif ++ + #if defined(CONFIG_BUBINGA) + #include + #endif diff --git a/packages/linux/linux-magicbox-2.6.19.2/001-squashfs.patch b/packages/linux/linux-magicbox-2.6.19.2/001-squashfs.patch new file mode 100644 index 0000000000..6881cd0bb1 --- /dev/null +++ b/packages/linux/linux-magicbox-2.6.19.2/001-squashfs.patch @@ -0,0 +1,4170 @@ +diff -urN linux-2.6.19.old/fs/Kconfig linux-2.6.19.dev/fs/Kconfig +--- linux-2.6.19.old/fs/Kconfig 2006-12-14 03:13:16.000000000 +0100 ++++ linux-2.6.19.dev/fs/Kconfig 2006-12-14 03:13:16.000000000 +0100 +@@ -1457,6 +1457,71 @@ + + If unsure, say N. + ++config SQUASHFS ++ tristate "SquashFS 3.0 - Squashed file system support" ++ select ZLIB_INFLATE ++ help ++ Saying Y here includes support for SquashFS 3.0 (a Compressed Read-Only File ++ System). Squashfs is a highly compressed read-only filesystem for Linux. ++ It uses zlib compression to compress both files, inodes and directories. ++ Inodes in the system are very small and all blocks are packed to minimise ++ data overhead. Block sizes greater than 4K are supported up to a maximum of 64K. ++ SquashFS 3.0 supports 64 bit filesystems and files (larger than 4GB), full ++ uid/gid information, hard links and timestamps. ++ ++ Squashfs is intended for general read-only filesystem use, for archival ++ use (i.e. in cases where a .tar.gz file may be used), and in embedded ++ systems where low overhead is needed. Further information and filesystem tools ++ are available from http://squashfs.sourceforge.net. ++ ++ If you want to compile this as a module ( = code which can be ++ inserted in and removed from the running kernel whenever you want), ++ say M here and read . The module ++ will be called squashfs. Note that the root file system (the one ++ containing the directory /) cannot be compiled as a module. ++ ++ If unsure, say N. ++ ++config SQUASHFS_EMBEDDED ++ ++ bool "Additional options for memory-constrained systems" ++ depends on SQUASHFS ++ default n ++ help ++ Saying Y here allows you to specify cache sizes and how Squashfs ++ allocates memory. This is only intended for memory constrained ++ systems. ++ ++ If unsure, say N. ++ ++config SQUASHFS_FRAGMENT_CACHE_SIZE ++ int "Number of fragments cached" if SQUASHFS_EMBEDDED ++ depends on SQUASHFS ++ default "3" ++ help ++ By default SquashFS caches the last 3 fragments read from ++ the filesystem. Increasing this amount may mean SquashFS ++ has to re-read fragments less often from disk, at the expense ++ of extra system memory. Decreasing this amount will mean ++ SquashFS uses less memory at the expense of extra reads from disk. ++ ++ Note there must be at least one cached fragment. Anything ++ much more than three will probably not make much difference. ++ ++config SQUASHFS_VMALLOC ++ bool "Use Vmalloc rather than Kmalloc" if SQUASHFS_EMBEDDED ++ depends on SQUASHFS ++ default n ++ help ++ By default SquashFS uses kmalloc to obtain fragment cache memory. ++ Kmalloc memory is the standard kernel allocator, but it can fail ++ on memory constrained systems. Because of the way Vmalloc works, ++ Vmalloc can succeed when kmalloc fails. Specifying this option ++ will make SquashFS always use Vmalloc to allocate the ++ fragment cache memory. ++ ++ If unsure, say N. ++ + config VXFS_FS + tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" + depends on BLOCK +diff -urN linux-2.6.19.old/fs/Makefile linux-2.6.19.dev/fs/Makefile +--- linux-2.6.19.old/fs/Makefile 2006-12-14 03:13:16.000000000 +0100 ++++ linux-2.6.19.dev/fs/Makefile 2006-12-14 03:13:16.000000000 +0100 +@@ -67,6 +67,7 @@ + obj-$(CONFIG_JBD2) += jbd2/ + obj-$(CONFIG_EXT2_FS) += ext2/ + obj-$(CONFIG_CRAMFS) += cramfs/ ++obj-$(CONFIG_SQUASHFS) += squashfs/ + obj-$(CONFIG_RAMFS) += ramfs/ + obj-$(CONFIG_HUGETLBFS) += hugetlbfs/ + obj-$(CONFIG_CODA_FS) += coda/ +diff -urN linux-2.6.19.old/fs/squashfs/inode.c linux-2.6.19.dev/fs/squashfs/inode.c +--- linux-2.6.19.old/fs/squashfs/inode.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.19.dev/fs/squashfs/inode.c 2006-12-14 03:13:16.000000000 +0100 +@@ -0,0 +1,2124 @@ ++/* ++ * Squashfs - a compressed read only filesystem for Linux ++ * ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2, ++ * or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ++ * ++ * inode.c ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#include "squashfs.h" ++ ++static void squashfs_put_super(struct super_block *); ++static int squashfs_statfs(struct dentry *, struct kstatfs *); ++static int squashfs_symlink_readpage(struct file *file, struct page *page); ++static int squashfs_readpage(struct file *file, struct page *page); ++static int squashfs_readpage4K(struct file *file, struct page *page); ++static int squashfs_readdir(struct file *, void *, filldir_t); ++static struct inode *squashfs_alloc_inode(struct super_block *sb); ++static void squashfs_destroy_inode(struct inode *inode); ++static int init_inodecache(void); ++static void destroy_inodecache(void); ++static struct dentry *squashfs_lookup(struct inode *, struct dentry *, ++ struct nameidata *); ++static struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode); ++static long long read_blocklist(struct inode *inode, int index, ++ int readahead_blks, char *block_list, ++ unsigned short **block_p, unsigned int *bsize); ++static int squashfs_get_sb(struct file_system_type *, int, ++ const char *, void *, struct vfsmount *); ++ ++ ++static z_stream stream; ++ ++static struct file_system_type squashfs_fs_type = { ++ .owner = THIS_MODULE, ++ .name = "squashfs", ++ .get_sb = squashfs_get_sb, ++ .kill_sb = kill_block_super, ++ .fs_flags = FS_REQUIRES_DEV ++}; ++ ++static unsigned char squashfs_filetype_table[] = { ++ DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK ++}; ++ ++static struct super_operations squashfs_ops = { ++ .alloc_inode = squashfs_alloc_inode, ++ .destroy_inode = squashfs_destroy_inode, ++ .statfs = squashfs_statfs, ++ .put_super = squashfs_put_super, ++}; ++ ++SQSH_EXTERN struct address_space_operations squashfs_symlink_aops = { ++ .readpage = squashfs_symlink_readpage ++}; ++ ++SQSH_EXTERN struct address_space_operations squashfs_aops = { ++ .readpage = squashfs_readpage ++}; ++ ++SQSH_EXTERN struct address_space_operations squashfs_aops_4K = { ++ .readpage = squashfs_readpage4K ++}; ++ ++static struct file_operations squashfs_dir_ops = { ++ .read = generic_read_dir, ++ .readdir = squashfs_readdir ++}; ++ ++SQSH_EXTERN struct inode_operations squashfs_dir_inode_ops = { ++ .lookup = squashfs_lookup ++}; ++ ++ ++static struct buffer_head *get_block_length(struct super_block *s, ++ int *cur_index, int *offset, int *c_byte) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ unsigned short temp; ++ struct buffer_head *bh; ++ ++ if (!(bh = sb_bread(s, *cur_index))) ++ goto out; ++ ++ if (msblk->devblksize - *offset == 1) { ++ if (msblk->swap) ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ else ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ brelse(bh); ++ if (!(bh = sb_bread(s, ++(*cur_index)))) ++ goto out; ++ if (msblk->swap) ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ bh->b_data); ++ else ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ bh->b_data); ++ *c_byte = temp; ++ *offset = 1; ++ } else { ++ if (msblk->swap) { ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ (bh->b_data + *offset + 1)); ++ } else { ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ (bh->b_data + *offset + 1)); ++ } ++ *c_byte = temp; ++ *offset += 2; ++ } ++ ++ if (SQUASHFS_CHECK_DATA(msblk->sblk.flags)) { ++ if (*offset == msblk->devblksize) { ++ brelse(bh); ++ if (!(bh = sb_bread(s, ++(*cur_index)))) ++ goto out; ++ *offset = 0; ++ } ++ if (*((unsigned char *) (bh->b_data + *offset)) != ++ SQUASHFS_MARKER_BYTE) { ++ ERROR("Metadata block marker corrupt @ %x\n", ++ *cur_index); ++ brelse(bh); ++ goto out; ++ } ++ (*offset)++; ++ } ++ return bh; ++ ++out: ++ return NULL; ++} ++ ++ ++SQSH_EXTERN unsigned int squashfs_read_data(struct super_block *s, char *buffer, ++ long long index, unsigned int length, ++ long long *next_index) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct buffer_head *bh[((SQUASHFS_FILE_MAX_SIZE - 1) >> ++ msblk->devblksize_log2) + 2]; ++ unsigned int offset = index & ((1 << msblk->devblksize_log2) - 1); ++ unsigned int cur_index = index >> msblk->devblksize_log2; ++ int bytes, avail_bytes, b = 0, k; ++ char *c_buffer; ++ unsigned int compressed; ++ unsigned int c_byte = length; ++ ++ if (c_byte) { ++ bytes = msblk->devblksize - offset; ++ compressed = SQUASHFS_COMPRESSED_BLOCK(c_byte); ++ c_buffer = compressed ? msblk->read_data : buffer; ++ c_byte = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte); ++ ++ TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed ++ ? "" : "un", (unsigned int) c_byte); ++ ++ if (!(bh[0] = sb_getblk(s, cur_index))) ++ goto block_release; ++ ++ for (b = 1; bytes < c_byte; b++) { ++ if (!(bh[b] = sb_getblk(s, ++cur_index))) ++ goto block_release; ++ bytes += msblk->devblksize; ++ } ++ ll_rw_block(READ, b, bh); ++ } else { ++ if (!(bh[0] = get_block_length(s, &cur_index, &offset, ++ &c_byte))) ++ goto read_failure; ++ ++ bytes = msblk->devblksize - offset; ++ compressed = SQUASHFS_COMPRESSED(c_byte); ++ c_buffer = compressed ? msblk->read_data : buffer; ++ c_byte = SQUASHFS_COMPRESSED_SIZE(c_byte); ++ ++ TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed ++ ? "" : "un", (unsigned int) c_byte); ++ ++ for (b = 1; bytes < c_byte; b++) { ++ if (!(bh[b] = sb_getblk(s, ++cur_index))) ++ goto block_release; ++ bytes += msblk->devblksize; ++ } ++ ll_rw_block(READ, b - 1, bh + 1); ++ } ++ ++ if (compressed) ++ down(&msblk->read_data_mutex); ++ ++ for (bytes = 0, k = 0; k < b; k++) { ++ avail_bytes = (c_byte - bytes) > (msblk->devblksize - offset) ? ++ msblk->devblksize - offset : ++ c_byte - bytes; ++ wait_on_buffer(bh[k]); ++ if (!buffer_uptodate(bh[k])) ++ goto block_release; ++ memcpy(c_buffer + bytes, bh[k]->b_data + offset, avail_bytes); ++ bytes += avail_bytes; ++ offset = 0; ++ brelse(bh[k]); ++ } ++ ++ /* ++ * uncompress block ++ */ ++ if (compressed) { ++ int zlib_err; ++ ++ stream.next_in = c_buffer; ++ stream.avail_in = c_byte; ++ stream.next_out = buffer; ++ stream.avail_out = msblk->read_size; ++ ++ if (((zlib_err = zlib_inflateInit(&stream)) != Z_OK) || ++ ((zlib_err = zlib_inflate(&stream, Z_FINISH)) ++ != Z_STREAM_END) || ((zlib_err = ++ zlib_inflateEnd(&stream)) != Z_OK)) { ++ ERROR("zlib_fs returned unexpected result 0x%x\n", ++ zlib_err); ++ bytes = 0; ++ } else ++ bytes = stream.total_out; ++ ++ up(&msblk->read_data_mutex); ++ } ++ ++ if (next_index) ++ *next_index = index + c_byte + (length ? 0 : ++ (SQUASHFS_CHECK_DATA(msblk->sblk.flags) ++ ? 3 : 2)); ++ return bytes; ++ ++block_release: ++ while (--b >= 0) ++ brelse(bh[b]); ++ ++read_failure: ++ ERROR("sb_bread failed reading block 0x%x\n", cur_index); ++ return 0; ++} ++ ++ ++SQSH_EXTERN int squashfs_get_cached_block(struct super_block *s, char *buffer, ++ long long block, unsigned int offset, ++ int length, long long *next_block, ++ unsigned int *next_offset) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ int n, i, bytes, return_length = length; ++ long long next_index; ++ ++ TRACE("Entered squashfs_get_cached_block [%llx:%x]\n", block, offset); ++ ++ while ( 1 ) { ++ for (i = 0; i < SQUASHFS_CACHED_BLKS; i++) ++ if (msblk->block_cache[i].block == block) ++ break; ++ ++ down(&msblk->block_cache_mutex); ++ ++ if (i == SQUASHFS_CACHED_BLKS) { ++ /* read inode header block */ ++ for (i = msblk->next_cache, n = SQUASHFS_CACHED_BLKS; ++ n ; n --, i = (i + 1) % ++ SQUASHFS_CACHED_BLKS) ++ if (msblk->block_cache[i].block != ++ SQUASHFS_USED_BLK) ++ break; ++ ++ if (n == 0) { ++ wait_queue_t wait; ++ ++ init_waitqueue_entry(&wait, current); ++ add_wait_queue(&msblk->waitq, &wait); ++ set_current_state(TASK_UNINTERRUPTIBLE); ++ up(&msblk->block_cache_mutex); ++ schedule(); ++ set_current_state(TASK_RUNNING); ++ remove_wait_queue(&msblk->waitq, &wait); ++ continue; ++ } ++ msblk->next_cache = (i + 1) % SQUASHFS_CACHED_BLKS; ++ ++ if (msblk->block_cache[i].block == ++ SQUASHFS_INVALID_BLK) { ++ if (!(msblk->block_cache[i].data = ++ kmalloc(SQUASHFS_METADATA_SIZE, ++ GFP_KERNEL))) { ++ ERROR("Failed to allocate cache" ++ "block\n"); ++ up(&msblk->block_cache_mutex); ++ goto out; ++ } ++ } ++ ++ msblk->block_cache[i].block = SQUASHFS_USED_BLK; ++ up(&msblk->block_cache_mutex); ++ ++ if (!(msblk->block_cache[i].length = ++ squashfs_read_data(s, ++ msblk->block_cache[i].data, ++ block, 0, &next_index))) { ++ ERROR("Unable to read cache block [%llx:%x]\n", ++ block, offset); ++ goto out; ++ } ++ ++ down(&msblk->block_cache_mutex); ++ wake_up(&msblk->waitq); ++ msblk->block_cache[i].block = block; ++ msblk->block_cache[i].next_index = next_index; ++ TRACE("Read cache block [%llx:%x]\n", block, offset); ++ } ++ ++ if (msblk->block_cache[i].block != block) { ++ up(&msblk->block_cache_mutex); ++ continue; ++ } ++ ++ if ((bytes = msblk->block_cache[i].length - offset) >= length) { ++ if (buffer) ++ memcpy(buffer, msblk->block_cache[i].data + ++ offset, length); ++ if (msblk->block_cache[i].length - offset == length) { ++ *next_block = msblk->block_cache[i].next_index; ++ *next_offset = 0; ++ } else { ++ *next_block = block; ++ *next_offset = offset + length; ++ } ++ up(&msblk->block_cache_mutex); ++ goto finish; ++ } else { ++ if (buffer) { ++ memcpy(buffer, msblk->block_cache[i].data + ++ offset, bytes); ++ buffer += bytes; ++ } ++ block = msblk->block_cache[i].next_index; ++ up(&msblk->block_cache_mutex); ++ length -= bytes; ++ offset = 0; ++ } ++ } ++ ++finish: ++ return return_length; ++out: ++ return 0; ++} ++ ++ ++static int get_fragment_location(struct super_block *s, unsigned int fragment, ++ long long *fragment_start_block, ++ unsigned int *fragment_size) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ long long start_block = ++ msblk->fragment_index[SQUASHFS_FRAGMENT_INDEX(fragment)]; ++ int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET(fragment); ++ struct squashfs_fragment_entry fragment_entry; ++ ++ if (msblk->swap) { ++ struct squashfs_fragment_entry sfragment_entry; ++ ++ if (!squashfs_get_cached_block(s, (char *) &sfragment_entry, ++ start_block, offset, ++ sizeof(sfragment_entry), &start_block, ++ &offset)) ++ goto out; ++ SQUASHFS_SWAP_FRAGMENT_ENTRY(&fragment_entry, &sfragment_entry); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) &fragment_entry, ++ start_block, offset, ++ sizeof(fragment_entry), &start_block, ++ &offset)) ++ goto out; ++ ++ *fragment_start_block = fragment_entry.start_block; ++ *fragment_size = fragment_entry.size; ++ ++ return 1; ++ ++out: ++ return 0; ++} ++ ++ ++SQSH_EXTERN void release_cached_fragment(struct squashfs_sb_info *msblk, struct ++ squashfs_fragment_cache *fragment) ++{ ++ down(&msblk->fragment_mutex); ++ fragment->locked --; ++ wake_up(&msblk->fragment_wait_queue); ++ up(&msblk->fragment_mutex); ++} ++ ++ ++SQSH_EXTERN struct squashfs_fragment_cache *get_cached_fragment(struct super_block ++ *s, long long start_block, ++ int length) ++{ ++ int i, n; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ ++ while ( 1 ) { ++ down(&msblk->fragment_mutex); ++ ++ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS && ++ msblk->fragment[i].block != start_block; i++); ++ ++ if (i == SQUASHFS_CACHED_FRAGMENTS) { ++ for (i = msblk->next_fragment, n = ++ SQUASHFS_CACHED_FRAGMENTS; n && ++ msblk->fragment[i].locked; n--, i = (i + 1) % ++ SQUASHFS_CACHED_FRAGMENTS); ++ ++ if (n == 0) { ++ wait_queue_t wait; ++ ++ init_waitqueue_entry(&wait, current); ++ add_wait_queue(&msblk->fragment_wait_queue, ++ &wait); ++ set_current_state(TASK_UNINTERRUPTIBLE); ++ up(&msblk->fragment_mutex); ++ schedule(); ++ set_current_state(TASK_RUNNING); ++ remove_wait_queue(&msblk->fragment_wait_queue, ++ &wait); ++ continue; ++ } ++ msblk->next_fragment = (msblk->next_fragment + 1) % ++ SQUASHFS_CACHED_FRAGMENTS; ++ ++ if (msblk->fragment[i].data == NULL) ++ if (!(msblk->fragment[i].data = SQUASHFS_ALLOC ++ (SQUASHFS_FILE_MAX_SIZE))) { ++ ERROR("Failed to allocate fragment " ++ "cache block\n"); ++ up(&msblk->fragment_mutex); ++ goto out; ++ } ++ ++ msblk->fragment[i].block = SQUASHFS_INVALID_BLK; ++ msblk->fragment[i].locked = 1; ++ up(&msblk->fragment_mutex); ++ ++ if (!(msblk->fragment[i].length = squashfs_read_data(s, ++ msblk->fragment[i].data, ++ start_block, length, NULL))) { ++ ERROR("Unable to read fragment cache block " ++ "[%llx]\n", start_block); ++ msblk->fragment[i].locked = 0; ++ goto out; ++ } ++ ++ msblk->fragment[i].block = start_block; ++ TRACE("New fragment %d, start block %lld, locked %d\n", ++ i, msblk->fragment[i].block, ++ msblk->fragment[i].locked); ++ break; ++ } ++ ++ msblk->fragment[i].locked++; ++ up(&msblk->fragment_mutex); ++ TRACE("Got fragment %d, start block %lld, locked %d\n", i, ++ msblk->fragment[i].block, ++ msblk->fragment[i].locked); ++ break; ++ } ++ ++ return &msblk->fragment[i]; ++ ++out: ++ return NULL; ++} ++ ++ ++static struct inode *squashfs_new_inode(struct super_block *s, ++ struct squashfs_base_inode_header *inodeb) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct inode *i = new_inode(s); ++ ++ if (i) { ++ i->i_ino = inodeb->inode_number; ++ i->i_mtime.tv_sec = inodeb->mtime; ++ i->i_atime.tv_sec = inodeb->mtime; ++ i->i_ctime.tv_sec = inodeb->mtime; ++ i->i_uid = msblk->uid[inodeb->uid]; ++ i->i_mode = inodeb->mode; ++ i->i_size = 0; ++ if (inodeb->guid == SQUASHFS_GUIDS) ++ i->i_gid = i->i_uid; ++ else ++ i->i_gid = msblk->guid[inodeb->guid]; ++ } ++ ++ return i; ++} ++ ++ ++static struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode) ++{ ++ struct inode *i; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ long long block = SQUASHFS_INODE_BLK(inode) + ++ sblk->inode_table_start; ++ unsigned int offset = SQUASHFS_INODE_OFFSET(inode); ++ long long next_block; ++ unsigned int next_offset; ++ union squashfs_inode_header id, sid; ++ struct squashfs_base_inode_header *inodeb = &id.base, ++ *sinodeb = &sid.base; ++ ++ TRACE("Entered squashfs_iget\n"); ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) sinodeb, block, ++ offset, sizeof(*sinodeb), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_BASE_INODE_HEADER(inodeb, sinodeb, ++ sizeof(*sinodeb)); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) inodeb, block, ++ offset, sizeof(*inodeb), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ switch(inodeb->inode_type) { ++ case SQUASHFS_FILE_TYPE: { ++ unsigned int frag_size; ++ long long frag_blk; ++ struct squashfs_reg_inode_header *inodep = &id.reg; ++ struct squashfs_reg_inode_header *sinodep = &sid.reg; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_REG_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ frag_blk = SQUASHFS_INVALID_BLK; ++ if (inodep->fragment != SQUASHFS_INVALID_FRAG && ++ !get_fragment_location(s, ++ inodep->fragment, &frag_blk, &frag_size)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = 1; ++ i->i_size = inodep->file_size; ++ i->i_fop = &generic_ro_fops; ++ i->i_mode |= S_IFREG; ++ i->i_blocks = ((i->i_size - 1) >> 9) + 1; ++ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk; ++ SQUASHFS_I(i)->u.s1.fragment_size = frag_size; ++ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->u.s1.block_list_start = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ if (sblk->block_size > 4096) ++ i->i_data.a_ops = &squashfs_aops; ++ else ++ i->i_data.a_ops = &squashfs_aops_4K; ++ ++ TRACE("File inode %x:%x, start_block %llx, " ++ "block_list_start %llx, offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, next_block, ++ next_offset); ++ break; ++ } ++ case SQUASHFS_LREG_TYPE: { ++ unsigned int frag_size; ++ long long frag_blk; ++ struct squashfs_lreg_inode_header *inodep = &id.lreg; ++ struct squashfs_lreg_inode_header *sinodep = &sid.lreg; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_LREG_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ frag_blk = SQUASHFS_INVALID_BLK; ++ if (inodep->fragment != SQUASHFS_INVALID_FRAG && ++ !get_fragment_location(s, ++ inodep->fragment, &frag_blk, &frag_size)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->file_size; ++ i->i_fop = &generic_ro_fops; ++ i->i_mode |= S_IFREG; ++ i->i_blocks = ((i->i_size - 1) >> 9) + 1; ++ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk; ++ SQUASHFS_I(i)->u.s1.fragment_size = frag_size; ++ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->u.s1.block_list_start = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ if (sblk->block_size > 4096) ++ i->i_data.a_ops = &squashfs_aops; ++ else ++ i->i_data.a_ops = &squashfs_aops_4K; ++ ++ TRACE("File inode %x:%x, start_block %llx, " ++ "block_list_start %llx, offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, next_block, ++ next_offset); ++ break; ++ } ++ case SQUASHFS_DIR_TYPE: { ++ struct squashfs_dir_inode_header *inodep = &id.dir; ++ struct squashfs_dir_inode_header *sinodep = &sid.dir; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_DIR_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->file_size; ++ i->i_op = &squashfs_dir_inode_ops; ++ i->i_fop = &squashfs_dir_ops; ++ i->i_mode |= S_IFDIR; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->offset = inodep->offset; ++ SQUASHFS_I(i)->u.s2.directory_index_count = 0; ++ SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode; ++ ++ TRACE("Directory inode %x:%x, start_block %x, offset " ++ "%x\n", SQUASHFS_INODE_BLK(inode), ++ offset, inodep->start_block, ++ inodep->offset); ++ break; ++ } ++ case SQUASHFS_LDIR_TYPE: { ++ struct squashfs_ldir_inode_header *inodep = &id.ldir; ++ struct squashfs_ldir_inode_header *sinodep = &sid.ldir; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_LDIR_INODE_HEADER(inodep, ++ sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->file_size; ++ i->i_op = &squashfs_dir_inode_ops; ++ i->i_fop = &squashfs_dir_ops; ++ i->i_mode |= S_IFDIR; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->offset = inodep->offset; ++ SQUASHFS_I(i)->u.s2.directory_index_start = next_block; ++ SQUASHFS_I(i)->u.s2.directory_index_offset = ++ next_offset; ++ SQUASHFS_I(i)->u.s2.directory_index_count = ++ inodep->i_count; ++ SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode; ++ ++ TRACE("Long directory inode %x:%x, start_block %x, " ++ "offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, inodep->offset); ++ break; ++ } ++ case SQUASHFS_SYMLINK_TYPE: { ++ struct squashfs_symlink_inode_header *inodep = ++ &id.symlink; ++ struct squashfs_symlink_inode_header *sinodep = ++ &sid.symlink; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_SYMLINK_INODE_HEADER(inodep, ++ sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->symlink_size; ++ i->i_op = &page_symlink_inode_operations; ++ i->i_data.a_ops = &squashfs_symlink_aops; ++ i->i_mode |= S_IFLNK; ++ SQUASHFS_I(i)->start_block = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ ++ TRACE("Symbolic link inode %x:%x, start_block %llx, " ++ "offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ next_block, next_offset); ++ break; ++ } ++ case SQUASHFS_BLKDEV_TYPE: ++ case SQUASHFS_CHRDEV_TYPE: { ++ struct squashfs_dev_inode_header *inodep = &id.dev; ++ struct squashfs_dev_inode_header *sinodep = &sid.dev; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_DEV_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if ((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_mode |= (inodeb->inode_type == ++ SQUASHFS_CHRDEV_TYPE) ? S_IFCHR : ++ S_IFBLK; ++ init_special_inode(i, i->i_mode, ++ old_decode_dev(inodep->rdev)); ++ ++ TRACE("Device inode %x:%x, rdev %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->rdev); ++ break; ++ } ++ case SQUASHFS_FIFO_TYPE: ++ case SQUASHFS_SOCKET_TYPE: { ++ struct squashfs_ipc_inode_header *inodep = &id.ipc; ++ struct squashfs_ipc_inode_header *sinodep = &sid.ipc; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_IPC_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if ((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_mode |= (inodeb->inode_type == SQUASHFS_FIFO_TYPE) ++ ? S_IFIFO : S_IFSOCK; ++ init_special_inode(i, i->i_mode, 0); ++ break; ++ } ++ default: ++ ERROR("Unknown inode type %d in squashfs_iget!\n", ++ inodeb->inode_type); ++ goto failed_read1; ++ } ++ ++ insert_inode_hash(i); ++ return i; ++ ++failed_read: ++ ERROR("Unable to read inode [%llx:%x]\n", block, offset); ++ ++failed_read1: ++ return NULL; ++} ++ ++ ++static int read_fragment_index_table(struct super_block *s) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ ++ /* Allocate fragment index table */ ++ if (!(msblk->fragment_index = kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES ++ (sblk->fragments), GFP_KERNEL))) { ++ ERROR("Failed to allocate uid/gid table\n"); ++ return 0; ++ } ++ ++ if (SQUASHFS_FRAGMENT_INDEX_BYTES(sblk->fragments) && ++ !squashfs_read_data(s, (char *) ++ msblk->fragment_index, ++ sblk->fragment_table_start, ++ SQUASHFS_FRAGMENT_INDEX_BYTES ++ (sblk->fragments) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ ERROR("unable to read fragment index table\n"); ++ return 0; ++ } ++ ++ if (msblk->swap) { ++ int i; ++ long long fragment; ++ ++ for (i = 0; i < SQUASHFS_FRAGMENT_INDEXES(sblk->fragments); ++ i++) { ++ SQUASHFS_SWAP_FRAGMENT_INDEXES((&fragment), ++ &msblk->fragment_index[i], 1); ++ msblk->fragment_index[i] = fragment; ++ } ++ } ++ ++ return 1; ++} ++ ++ ++static int supported_squashfs_filesystem(struct squashfs_sb_info *msblk, int silent) ++{ ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ ++ msblk->iget = squashfs_iget; ++ msblk->read_blocklist = read_blocklist; ++ msblk->read_fragment_index_table = read_fragment_index_table; ++ ++ if (sblk->s_major == 1) { ++ if (!squashfs_1_0_supported(msblk)) { ++ SERROR("Major/Minor mismatch, Squashfs 1.0 filesystems " ++ "are unsupported\n"); ++ SERROR("Please recompile with " ++ "Squashfs 1.0 support enabled\n"); ++ return 0; ++ } ++ } else if (sblk->s_major == 2) { ++ if (!squashfs_2_0_supported(msblk)) { ++ SERROR("Major/Minor mismatch, Squashfs 2.0 filesystems " ++ "are unsupported\n"); ++ SERROR("Please recompile with " ++ "Squashfs 2.0 support enabled\n"); ++ return 0; ++ } ++ } else if(sblk->s_major != SQUASHFS_MAJOR || sblk->s_minor > ++ SQUASHFS_MINOR) { ++ SERROR("Major/Minor mismatch, trying to mount newer %d.%d " ++ "filesystem\n", sblk->s_major, sblk->s_minor); ++ SERROR("Please update your kernel\n"); ++ return 0; ++ } ++ ++ return 1; ++} ++ ++ ++static int squashfs_fill_super(struct super_block *s, void *data, int silent) ++{ ++ struct squashfs_sb_info *msblk; ++ struct squashfs_super_block *sblk; ++ int i; ++ char b[BDEVNAME_SIZE]; ++ struct inode *root; ++ ++ TRACE("Entered squashfs_read_superblock\n"); ++ ++ if (!(s->s_fs_info = kmalloc(sizeof(struct squashfs_sb_info), ++ GFP_KERNEL))) { ++ ERROR("Failed to allocate superblock\n"); ++ goto failure; ++ } ++ memset(s->s_fs_info, 0, sizeof(struct squashfs_sb_info)); ++ msblk = s->s_fs_info; ++ sblk = &msblk->sblk; ++ ++ msblk->devblksize = sb_min_blocksize(s, BLOCK_SIZE); ++ msblk->devblksize_log2 = ffz(~msblk->devblksize); ++ ++ init_MUTEX(&msblk->read_data_mutex); ++ init_MUTEX(&msblk->read_page_mutex); ++ init_MUTEX(&msblk->block_cache_mutex); ++ init_MUTEX(&msblk->fragment_mutex); ++ init_MUTEX(&msblk->meta_index_mutex); ++ ++ init_waitqueue_head(&msblk->waitq); ++ init_waitqueue_head(&msblk->fragment_wait_queue); ++ ++ if (!squashfs_read_data(s, (char *) sblk, SQUASHFS_START, ++ sizeof(struct squashfs_super_block) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ SERROR("unable to read superblock\n"); ++ goto failed_mount; ++ } ++ ++ /* Check it is a SQUASHFS superblock */ ++ msblk->swap = 0; ++ if ((s->s_magic = sblk->s_magic) != SQUASHFS_MAGIC) { ++ if (sblk->s_magic == SQUASHFS_MAGIC_SWAP) { ++ struct squashfs_super_block ssblk; ++ ++ WARNING("Mounting a different endian SQUASHFS " ++ "filesystem on %s\n", bdevname(s->s_bdev, b)); ++ ++ SQUASHFS_SWAP_SUPER_BLOCK(&ssblk, sblk); ++ memcpy(sblk, &ssblk, sizeof(struct squashfs_super_block)); ++ msblk->swap = 1; ++ } else { ++ SERROR("Can't find a SQUASHFS superblock on %s\n", ++ bdevname(s->s_bdev, b)); ++ goto failed_mount; ++ } ++ } ++ ++ /* Check the MAJOR & MINOR versions */ ++ if(!supported_squashfs_filesystem(msblk, silent)) ++ goto failed_mount; ++ ++ TRACE("Found valid superblock on %s\n", bdevname(s->s_bdev, b)); ++ TRACE("Inodes are %scompressed\n", ++ SQUASHFS_UNCOMPRESSED_INODES ++ (sblk->flags) ? "un" : ""); ++ TRACE("Data is %scompressed\n", ++ SQUASHFS_UNCOMPRESSED_DATA(sblk->flags) ++ ? "un" : ""); ++ TRACE("Check data is %s present in the filesystem\n", ++ SQUASHFS_CHECK_DATA(sblk->flags) ? ++ "" : "not"); ++ TRACE("Filesystem size %lld bytes\n", sblk->bytes_used); ++ TRACE("Block size %d\n", sblk->block_size); ++ TRACE("Number of inodes %d\n", sblk->inodes); ++ if (sblk->s_major > 1) ++ TRACE("Number of fragments %d\n", sblk->fragments); ++ TRACE("Number of uids %d\n", sblk->no_uids); ++ TRACE("Number of gids %d\n", sblk->no_guids); ++ TRACE("sblk->inode_table_start %llx\n", sblk->inode_table_start); ++ TRACE("sblk->directory_table_start %llx\n", sblk->directory_table_start); ++ if (sblk->s_major > 1) ++ TRACE("sblk->fragment_table_start %llx\n", ++ sblk->fragment_table_start); ++ TRACE("sblk->uid_start %llx\n", sblk->uid_start); ++ ++ s->s_flags |= MS_RDONLY; ++ s->s_op = &squashfs_ops; ++ ++ /* Init inode_table block pointer array */ ++ if (!(msblk->block_cache = kmalloc(sizeof(struct squashfs_cache) * ++ SQUASHFS_CACHED_BLKS, GFP_KERNEL))) { ++ ERROR("Failed to allocate block cache\n"); ++ goto failed_mount; ++ } ++ ++ for (i = 0; i < SQUASHFS_CACHED_BLKS; i++) ++ msblk->block_cache[i].block = SQUASHFS_INVALID_BLK; ++ ++ msblk->next_cache = 0; ++ ++ /* Allocate read_data block */ ++ msblk->read_size = (sblk->block_size < SQUASHFS_METADATA_SIZE) ? ++ SQUASHFS_METADATA_SIZE : ++ sblk->block_size; ++ ++ if (!(msblk->read_data = kmalloc(msblk->read_size, GFP_KERNEL))) { ++ ERROR("Failed to allocate read_data block\n"); ++ goto failed_mount; ++ } ++ ++ /* Allocate read_page block */ ++ if (!(msblk->read_page = kmalloc(sblk->block_size, GFP_KERNEL))) { ++ ERROR("Failed to allocate read_page block\n"); ++ goto failed_mount; ++ } ++ ++ /* Allocate uid and gid tables */ ++ if (!(msblk->uid = kmalloc((sblk->no_uids + sblk->no_guids) * ++ sizeof(unsigned int), GFP_KERNEL))) { ++ ERROR("Failed to allocate uid/gid table\n"); ++ goto failed_mount; ++ } ++ msblk->guid = msblk->uid + sblk->no_uids; ++ ++ if (msblk->swap) { ++ unsigned int suid[sblk->no_uids + sblk->no_guids]; ++ ++ if (!squashfs_read_data(s, (char *) &suid, sblk->uid_start, ++ ((sblk->no_uids + sblk->no_guids) * ++ sizeof(unsigned int)) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ ERROR("unable to read uid/gid table\n"); ++ goto failed_mount; ++ } ++ ++ SQUASHFS_SWAP_DATA(msblk->uid, suid, (sblk->no_uids + ++ sblk->no_guids), (sizeof(unsigned int) * 8)); ++ } else ++ if (!squashfs_read_data(s, (char *) msblk->uid, sblk->uid_start, ++ ((sblk->no_uids + sblk->no_guids) * ++ sizeof(unsigned int)) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ ERROR("unable to read uid/gid table\n"); ++ goto failed_mount; ++ } ++ ++ ++ if (sblk->s_major == 1 && squashfs_1_0_supported(msblk)) ++ goto allocate_root; ++ ++ if (!(msblk->fragment = kmalloc(sizeof(struct squashfs_fragment_cache) * ++ SQUASHFS_CACHED_FRAGMENTS, GFP_KERNEL))) { ++ ERROR("Failed to allocate fragment block cache\n"); ++ goto failed_mount; ++ } ++ ++ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) { ++ msblk->fragment[i].locked = 0; ++ msblk->fragment[i].block = SQUASHFS_INVALID_BLK; ++ msblk->fragment[i].data = NULL; ++ } ++ ++ msblk->next_fragment = 0; ++ ++ /* Allocate fragment index table */ ++ if (msblk->read_fragment_index_table(s) == 0) ++ goto failed_mount; ++ ++allocate_root: ++ if ((root = (msblk->iget)(s, sblk->root_inode)) == NULL) ++ goto failed_mount; ++ ++ if ((s->s_root = d_alloc_root(root)) == NULL) { ++ ERROR("Root inode create failed\n"); ++ iput(root); ++ goto failed_mount; ++ } ++ ++ TRACE("Leaving squashfs_read_super\n"); ++ return 0; ++ ++failed_mount: ++ kfree(msblk->fragment_index); ++ kfree(msblk->fragment); ++ kfree(msblk->uid); ++ kfree(msblk->read_page); ++ kfree(msblk->read_data); ++ kfree(msblk->block_cache); ++ kfree(msblk->fragment_index_2); ++ kfree(s->s_fs_info); ++ s->s_fs_info = NULL; ++ return -EINVAL; ++ ++failure: ++ return -ENOMEM; ++} ++ ++ ++static int squashfs_statfs(struct dentry *dentry, struct kstatfs *buf) ++{ ++ struct squashfs_sb_info *msblk = dentry->d_inode->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ ++ TRACE("Entered squashfs_statfs\n"); ++ ++ buf->f_type = SQUASHFS_MAGIC; ++ buf->f_bsize = sblk->block_size; ++ buf->f_blocks = ((sblk->bytes_used - 1) >> sblk->block_log) + 1; ++ buf->f_bfree = buf->f_bavail = 0; ++ buf->f_files = sblk->inodes; ++ buf->f_ffree = 0; ++ buf->f_namelen = SQUASHFS_NAME_LEN; ++ ++ return 0; ++} ++ ++ ++static int squashfs_symlink_readpage(struct file *file, struct page *page) ++{ ++ struct inode *inode = page->mapping->host; ++ int index = page->index << PAGE_CACHE_SHIFT, length, bytes; ++ long long block = SQUASHFS_I(inode)->start_block; ++ int offset = SQUASHFS_I(inode)->offset; ++ void *pageaddr = kmap(page); ++ ++ TRACE("Entered squashfs_symlink_readpage, page index %ld, start block " ++ "%llx, offset %x\n", page->index, ++ SQUASHFS_I(inode)->start_block, ++ SQUASHFS_I(inode)->offset); ++ ++ for (length = 0; length < index; length += bytes) { ++ if (!(bytes = squashfs_get_cached_block(inode->i_sb, NULL, ++ block, offset, PAGE_CACHE_SIZE, &block, ++ &offset))) { ++ ERROR("Unable to read symbolic link [%llx:%x]\n", block, ++ offset); ++ goto skip_read; ++ } ++ } ++ ++ if (length != index) { ++ ERROR("(squashfs_symlink_readpage) length != index\n"); ++ bytes = 0; ++ goto skip_read; ++ } ++ ++ bytes = (i_size_read(inode) - length) > PAGE_CACHE_SIZE ? PAGE_CACHE_SIZE : ++ i_size_read(inode) - length; ++ ++ if (!(bytes = squashfs_get_cached_block(inode->i_sb, pageaddr, block, ++ offset, bytes, &block, &offset))) ++ ERROR("Unable to read symbolic link [%llx:%x]\n", block, offset); ++ ++skip_read: ++ memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes); ++ kunmap(page); ++ SetPageUptodate(page); ++ unlock_page(page); ++ ++ return 0; ++} ++ ++ ++struct meta_index *locate_meta_index(struct inode *inode, int index, int offset) ++{ ++ struct meta_index *meta = NULL; ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ int i; ++ ++ down(&msblk->meta_index_mutex); ++ ++ TRACE("locate_meta_index: index %d, offset %d\n", index, offset); ++ ++ if(msblk->meta_index == NULL) ++ goto not_allocated; ++ ++ for (i = 0; i < SQUASHFS_META_NUMBER; i ++) ++ if (msblk->meta_index[i].inode_number == inode->i_ino && ++ msblk->meta_index[i].offset >= offset && ++ msblk->meta_index[i].offset <= index && ++ msblk->meta_index[i].locked == 0) { ++ TRACE("locate_meta_index: entry %d, offset %d\n", i, ++ msblk->meta_index[i].offset); ++ meta = &msblk->meta_index[i]; ++ offset = meta->offset; ++ } ++ ++ if (meta) ++ meta->locked = 1; ++ ++not_allocated: ++ up(&msblk->meta_index_mutex); ++ ++ return meta; ++} ++ ++ ++struct meta_index *empty_meta_index(struct inode *inode, int offset, int skip) ++{ ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ struct meta_index *meta = NULL; ++ int i; ++ ++ down(&msblk->meta_index_mutex); ++ ++ TRACE("empty_meta_index: offset %d, skip %d\n", offset, skip); ++ ++ if(msblk->meta_index == NULL) { ++ if (!(msblk->meta_index = kmalloc(sizeof(struct meta_index) * ++ SQUASHFS_META_NUMBER, GFP_KERNEL))) { ++ ERROR("Failed to allocate meta_index\n"); ++ goto failed; ++ } ++ for(i = 0; i < SQUASHFS_META_NUMBER; i++) { ++ msblk->meta_index[i].inode_number = 0; ++ msblk->meta_index[i].locked = 0; ++ } ++ msblk->next_meta_index = 0; ++ } ++ ++ for(i = SQUASHFS_META_NUMBER; i && ++ msblk->meta_index[msblk->next_meta_index].locked; i --) ++ msblk->next_meta_index = (msblk->next_meta_index + 1) % ++ SQUASHFS_META_NUMBER; ++ ++ if(i == 0) { ++ TRACE("empty_meta_index: failed!\n"); ++ goto failed; ++ } ++ ++ TRACE("empty_meta_index: returned meta entry %d, %p\n", ++ msblk->next_meta_index, ++ &msblk->meta_index[msblk->next_meta_index]); ++ ++ meta = &msblk->meta_index[msblk->next_meta_index]; ++ msblk->next_meta_index = (msblk->next_meta_index + 1) % ++ SQUASHFS_META_NUMBER; ++ ++ meta->inode_number = inode->i_ino; ++ meta->offset = offset; ++ meta->skip = skip; ++ meta->entries = 0; ++ meta->locked = 1; ++ ++failed: ++ up(&msblk->meta_index_mutex); ++ return meta; ++} ++ ++ ++void release_meta_index(struct inode *inode, struct meta_index *meta) ++{ ++ meta->locked = 0; ++} ++ ++ ++static int read_block_index(struct super_block *s, int blocks, char *block_list, ++ long long *start_block, int *offset) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ unsigned int *block_listp; ++ int block = 0; ++ ++ if (msblk->swap) { ++ char sblock_list[blocks << 2]; ++ ++ if (!squashfs_get_cached_block(s, sblock_list, *start_block, ++ *offset, blocks << 2, start_block, offset)) { ++ ERROR("Unable to read block list [%llx:%x]\n", ++ *start_block, *offset); ++ goto failure; ++ } ++ SQUASHFS_SWAP_INTS(((unsigned int *)block_list), ++ ((unsigned int *)sblock_list), blocks); ++ } else ++ if (!squashfs_get_cached_block(s, block_list, *start_block, ++ *offset, blocks << 2, start_block, offset)) { ++ ERROR("Unable to read block list [%llx:%x]\n", ++ *start_block, *offset); ++ goto failure; ++ } ++ ++ for (block_listp = (unsigned int *) block_list; blocks; ++ block_listp++, blocks --) ++ block += SQUASHFS_COMPRESSED_SIZE_BLOCK(*block_listp); ++ ++ return block; ++ ++failure: ++ return -1; ++} ++ ++ ++#define SIZE 256 ++ ++static inline int calculate_skip(int blocks) { ++ int skip = (blocks - 1) / ((SQUASHFS_SLOTS * SQUASHFS_META_ENTRIES + 1) * SQUASHFS_META_INDEXES); ++ return skip >= 7 ? 7 : skip + 1; ++} ++ ++ ++static int get_meta_index(struct inode *inode, int index, ++ long long *index_block, int *index_offset, ++ long long *data_block, char *block_list) ++{ ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ int skip = calculate_skip(i_size_read(inode) >> sblk->block_log); ++ int offset = 0; ++ struct meta_index *meta; ++ struct meta_entry *meta_entry; ++ long long cur_index_block = SQUASHFS_I(inode)->u.s1.block_list_start; ++ int cur_offset = SQUASHFS_I(inode)->offset; ++ long long cur_data_block = SQUASHFS_I(inode)->start_block; ++ int i; ++ ++ index /= SQUASHFS_META_INDEXES * skip; ++ ++ while ( offset < index ) { ++ meta = locate_meta_index(inode, index, offset + 1); ++ ++ if (meta == NULL) { ++ if ((meta = empty_meta_index(inode, offset + 1, ++ skip)) == NULL) ++ goto all_done; ++ } else { ++ offset = index < meta->offset + meta->entries ? index : ++ meta->offset + meta-