diff options
Diffstat (limited to 'release/src/linux/linux/scripts/squashfs/squashfs_fs.h')
| -rw-r--r-- | release/src/linux/linux/scripts/squashfs/squashfs_fs.h | 735 |
1 files changed, 569 insertions, 166 deletions
diff --git a/release/src/linux/linux/scripts/squashfs/squashfs_fs.h b/release/src/linux/linux/scripts/squashfs/squashfs_fs.h index d810c596..fbbb53c1 100644 --- a/release/src/linux/linux/scripts/squashfs/squashfs_fs.h +++ b/release/src/linux/linux/scripts/squashfs/squashfs_fs.h @@ -1,9 +1,11 @@ #ifndef SQUASHFS_FS #define SQUASHFS_FS + /* * Squashfs * - * Copyright (c) 2002, 2003, 2004 Phillip Lougher <plougher@users.sourceforge.net> + * Copyright (c) 2002, 2003, 2004, 2005, 2006 + * Phillip Lougher <phillip@lougher.org.uk> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -22,7 +24,7 @@ * squashfs_fs.h */ -#define SQUASHFS_MAJOR 2 +#define SQUASHFS_MAJOR 3 #define SQUASHFS_MINOR 0 #define SQUASHFS_MAGIC 0x73717368 #define SQUASHFS_MAGIC_SWAP 0x68737173 @@ -46,8 +48,9 @@ #define SQUASHFS_NAME_LEN 256 #define SQUASHFS_INVALID ((long long) 0xffffffffffff) -#define SQUASHFS_INVALID_BLK ((long long) 0xffffffff) -#define SQUASHFS_USED_BLK ((long long) 0xfffffffe) +#define SQUASHFS_INVALID_FRAG ((unsigned int) 0xffffffff) +#define SQUASHFS_INVALID_BLK ((long long) -1) +#define SQUASHFS_USED_BLK ((long long) -2) /* Filesystem flags */ #define SQUASHFS_NOI 0 @@ -57,15 +60,34 @@ #define SQUASHFS_NO_FRAG 4 #define SQUASHFS_ALWAYS_FRAG 5 #define SQUASHFS_DUPLICATE 6 + #define SQUASHFS_BIT(flag, bit) ((flag >> bit) & 1) -#define SQUASHFS_UNCOMPRESSED_INODES(flags) SQUASHFS_BIT(flags, SQUASHFS_NOI) -#define SQUASHFS_UNCOMPRESSED_DATA(flags) SQUASHFS_BIT(flags, SQUASHFS_NOD) -#define SQUASHFS_UNCOMPRESSED_FRAGMENTS(flags) SQUASHFS_BIT(flags, SQUASHFS_NOF) -#define SQUASHFS_NO_FRAGMENTS(flags) SQUASHFS_BIT(flags, SQUASHFS_NO_FRAG) -#define SQUASHFS_ALWAYS_FRAGMENTS(flags) SQUASHFS_BIT(flags, SQUASHFS_ALWAYS_FRAG) -#define SQUASHFS_DUPLICATES(flags) SQUASHFS_BIT(flags, SQUASHFS_DUPLICATE) -#define SQUASHFS_CHECK_DATA(flags) SQUASHFS_BIT(flags, SQUASHFS_CHECK) -#define SQUASHFS_MKFLAGS(noi, nod, check_data, nof, no_frag, always_frag, duplicate_checking) (noi | (nod << 1) | (check_data << 2) | (nof << 3) | (no_frag << 4) | (always_frag << 5) | (duplicate_checking << 6)) + +#define SQUASHFS_UNCOMPRESSED_INODES(flags) SQUASHFS_BIT(flags, \ + SQUASHFS_NOI) + +#define SQUASHFS_UNCOMPRESSED_DATA(flags) SQUASHFS_BIT(flags, \ + SQUASHFS_NOD) + +#define SQUASHFS_UNCOMPRESSED_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ + SQUASHFS_NOF) + +#define SQUASHFS_NO_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ + SQUASHFS_NO_FRAG) + +#define SQUASHFS_ALWAYS_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ + SQUASHFS_ALWAYS_FRAG) + +#define SQUASHFS_DUPLICATES(flags) SQUASHFS_BIT(flags, \ + SQUASHFS_DUPLICATE) + +#define SQUASHFS_CHECK_DATA(flags) SQUASHFS_BIT(flags, \ + SQUASHFS_CHECK) + +#define SQUASHFS_MKFLAGS(noi, nod, check_data, nof, no_frag, always_frag, \ + duplicate_checking) (noi | (nod << 1) | (check_data << 2) \ + | (nof << 3) | (no_frag << 4) | (always_frag << 5) | \ + (duplicate_checking << 6)) /* Max number of types and file types */ #define SQUASHFS_DIR_TYPE 1 @@ -75,53 +97,74 @@ #define SQUASHFS_CHRDEV_TYPE 5 #define SQUASHFS_FIFO_TYPE 6 #define SQUASHFS_SOCKET_TYPE 7 +#define SQUASHFS_LDIR_TYPE 8 +#define SQUASHFS_LREG_TYPE 9 /* 1.0 filesystem type definitions */ #define SQUASHFS_TYPES 5 #define SQUASHFS_IPC_TYPE 0 -/* Flag whether block is compressed or uncompressed, bit is set if block is uncompressed */ +/* Flag whether block is compressed or uncompressed, bit is set if block is + * uncompressed */ #define SQUASHFS_COMPRESSED_BIT (1 << 15) + #define SQUASHFS_COMPRESSED_SIZE(B) (((B) & ~SQUASHFS_COMPRESSED_BIT) ? \ - (B) & ~SQUASHFS_COMPRESSED_BIT : SQUASHFS_COMPRESSED_BIT) + (B) & ~SQUASHFS_COMPRESSED_BIT : SQUASHFS_COMPRESSED_BIT) #define SQUASHFS_COMPRESSED(B) (!((B) & SQUASHFS_COMPRESSED_BIT)) #define SQUASHFS_COMPRESSED_BIT_BLOCK (1 << 24) -#define SQUASHFS_COMPRESSED_SIZE_BLOCK(B) (((B) & ~SQUASHFS_COMPRESSED_BIT_BLOCK) ? \ - (B) & ~SQUASHFS_COMPRESSED_BIT_BLOCK : SQUASHFS_COMPRESSED_BIT_BLOCK) -#define SQUASHFS_COMPRESSED_BLOCK(B) (!((B) & SQUASHFS_COMPRESSED_BIT_BLOCK)) +#define SQUASHFS_COMPRESSED_SIZE_BLOCK(B) (((B) & \ + ~SQUASHFS_COMPRESSED_BIT_BLOCK) ? (B) & \ + ~SQUASHFS_COMPRESSED_BIT_BLOCK : SQUASHFS_COMPRESSED_BIT_BLOCK) + +#define SQUASHFS_COMPRESSED_BLOCK(B) (!((B) & SQUASHFS_COMPRESSED_BIT_BLOCK)) /* - * Inode number ops. Inodes consist of a compressed block number, and an uncompressed - * offset within that block + * Inode number ops. Inodes consist of a compressed block number, and an + * uncompressed offset within that block */ #define SQUASHFS_INODE_BLK(a) ((unsigned int) ((a) >> 16)) + #define SQUASHFS_INODE_OFFSET(a) ((unsigned int) ((a) & 0xffff)) -#define SQUASHFS_MKINODE(A, B) ((squashfs_inode)(((squashfs_inode) (A) << 16)\ - + (B))) + +#define SQUASHFS_MKINODE(A, B) ((squashfs_inode_t)(((squashfs_inode_t) (A)\ + << 16) + (B))) /* Compute 32 bit VFS inode number from squashfs inode number */ -#define SQUASHFS_MK_VFS_INODE(a, b) ((unsigned int) (((a) << 8) + ((b) >> 2) + 1)) +#define SQUASHFS_MK_VFS_INODE(a, b) ((unsigned int) (((a) << 8) + \ + ((b) >> 2) + 1)) +/* XXX */ /* Translate between VFS mode and squashfs mode */ #define SQUASHFS_MODE(a) ((a) & 0xfff) /* fragment and fragment table defines */ -typedef unsigned int squashfs_fragment_index; -#define SQUASHFS_FRAGMENT_BYTES(A) (A * sizeof(squashfs_fragment_entry)) -#define SQUASHFS_FRAGMENT_INDEX(A) (SQUASHFS_FRAGMENT_BYTES(A) / SQUASHFS_METADATA_SIZE) -#define SQUASHFS_FRAGMENT_INDEX_OFFSET(A) (SQUASHFS_FRAGMENT_BYTES(A) % SQUASHFS_METADATA_SIZE) -#define SQUASHFS_FRAGMENT_INDEXES(A) ((SQUASHFS_FRAGMENT_BYTES(A) + SQUASHFS_METADATA_SIZE - 1) / SQUASHFS_METADATA_SIZE) -#define SQUASHFS_FRAGMENT_INDEX_BYTES(A) (SQUASHFS_FRAGMENT_INDEXES(A) * sizeof(squashfs_fragment_index)) +#define SQUASHFS_FRAGMENT_BYTES(A) (A * sizeof(struct squashfs_fragment_entry)) + +#define SQUASHFS_FRAGMENT_INDEX(A) (SQUASHFS_FRAGMENT_BYTES(A) / \ + SQUASHFS_METADATA_SIZE) + +#define SQUASHFS_FRAGMENT_INDEX_OFFSET(A) (SQUASHFS_FRAGMENT_BYTES(A) % \ + SQUASHFS_METADATA_SIZE) + +#define SQUASHFS_FRAGMENT_INDEXES(A) ((SQUASHFS_FRAGMENT_BYTES(A) + \ + SQUASHFS_METADATA_SIZE - 1) / \ + SQUASHFS_METADATA_SIZE) + +#define SQUASHFS_FRAGMENT_INDEX_BYTES(A) (SQUASHFS_FRAGMENT_INDEXES(A) *\ + sizeof(long long)) + #define SQUASHFS_CACHED_FRAGMENTS 3 /* cached data constants for filesystem */ #define SQUASHFS_CACHED_BLKS 8 -#define SQUASHFS_MAX_FILE_SIZE_LOG 32 -#define SQUASHFS_MAX_FILE_SIZE ((long long) 1 << (SQUASHFS_MAX_FILE_SIZE_LOG - 1)) +#define SQUASHFS_MAX_FILE_SIZE_LOG 64 + +#define SQUASHFS_MAX_FILE_SIZE ((long long) 1 << \ + (SQUASHFS_MAX_FILE_SIZE_LOG - 2)) #define SQUASHFS_MARKER_BYTE 0xff @@ -129,19 +172,17 @@ typedef unsigned int squashfs_fragment_index; * definitions for structures on disk */ -typedef unsigned int squashfs_block; -typedef long long squashfs_inode; - -typedef unsigned int squashfs_uid; +typedef long long squashfs_block_t; +typedef long long squashfs_inode_t; -typedef struct squashfs_super_block { +struct squashfs_super_block { unsigned int s_magic; unsigned int inodes; - unsigned int bytes_used; - unsigned int uid_start; - unsigned int guid_start; - unsigned int inode_table_start; - unsigned int directory_table_start; + unsigned int bytes_used_2; + unsigned int uid_start_2; + unsigned int guid_start_2; + unsigned int inode_table_start_2; + unsigned int directory_table_start_2; unsigned int s_major:16; unsigned int s_minor:16; unsigned int block_size_1:16; @@ -150,88 +191,125 @@ typedef struct squashfs_super_block { unsigned int no_uids:8; unsigned int no_guids:8; unsigned int mkfs_time /* time of filesystem creation */; - squashfs_inode root_inode; + squashfs_inode_t root_inode; unsigned int block_size; unsigned int fragments; - unsigned int fragment_table_start; -} __attribute__ ((packed)) squashfs_super_block; - -typedef struct { - unsigned int inode_type:4; - unsigned int mode:12; /* protection */ - unsigned int uid:8; /* index into uid table */ - unsigned int guid:8; /* index into guid table */ -} __attribute__ ((packed)) squashfs_base_inode_header; - -typedef squashfs_base_inode_header squashfs_ipc_inode_header; - -typedef struct { - unsigned int inode_type:4; - unsigned int mode:12; /* protection */ - unsigned int uid:8; /* index into uid table */ - unsigned int guid:8; /* index into guid table */ + unsigned int fragment_table_start_2; + long long bytes_used; + long long uid_start; + long long guid_start; + long long inode_table_start; + long long directory_table_start; + long long fragment_table_start; + long long unused; +} __attribute__ ((packed)); + +struct squashfs_dir_index { + unsigned int index; + unsigned int start_block; + unsigned char size; + unsigned char name[0]; +} __attribute__ ((packed)); + +#define SQUASHFS_BASE_INODE_HEADER \ + unsigned int inode_type:4; \ + unsigned int mode:12; \ + unsigned int uid:8; \ + unsigned int guid:8; \ + unsigned int mtime; \ + unsigned int inode_number; + +struct squashfs_base_inode_header { + SQUASHFS_BASE_INODE_HEADER; +} __attribute__ ((packed)); + +struct squashfs_ipc_inode_header { + SQUASHFS_BASE_INODE_HEADER; + unsigned int nlink; +} __attribute__ ((packed)); + +struct squashfs_dev_inode_header { + SQUASHFS_BASE_INODE_HEADER; + unsigned int nlink; unsigned short rdev; -} __attribute__ ((packed)) squashfs_dev_inode_header; +} __attribute__ ((packed)); -typedef struct { - unsigned int inode_type:4; - unsigned int mode:12; /* protection */ - unsigned int uid:8; /* index into uid table */ - unsigned int guid:8; /* index into guid table */ +struct squashfs_symlink_inode_header { + SQUASHFS_BASE_INODE_HEADER; + unsigned int nlink; unsigned short symlink_size; char symlink[0]; -} __attribute__ ((packed)) squashfs_symlink_inode_header; +} __attribute__ ((packed)); -typedef struct { - unsigned int inode_type:4; - unsigned int mode:12; /* protection */ - unsigned int uid:8; /* index into uid table */ - unsigned int guid:8; /* index into guid table */ - unsigned int mtime; - squashfs_block start_block; +struct squashfs_reg_inode_header { + SQUASHFS_BASE_INODE_HEADER; + squashfs_block_t start_block; unsigned int fragment; unsigned int offset; - unsigned int file_size:SQUASHFS_MAX_FILE_SIZE_LOG; + unsigned int file_size; unsigned short block_list[0]; -} __attribute__ ((packed)) squashfs_reg_inode_header; +} __attribute__ ((packed)); -typedef struct { - unsigned int inode_type:4; - unsigned int mode:12; /* protection */ - unsigned int uid:8; /* index into uid table */ - unsigned int guid:8; /* index into guid table */ +struct squashfs_lreg_inode_header { + SQUASHFS_BASE_INODE_HEADER; + unsigned int nlink; + squashfs_block_t start_block; + unsigned int fragment; + unsigned int offset; + long long file_size; + unsigned short block_list[0]; +} __attribute__ ((packed)); + +struct squashfs_dir_inode_header { + SQUASHFS_BASE_INODE_HEADER; + unsigned int nlink; unsigned int file_size:19; unsigned int offset:13; - unsigned int mtime; - unsigned int start_block:24; -} __attribute__ ((packed)) squashfs_dir_inode_header; - -typedef union { - squashfs_base_inode_header base; - squashfs_dev_inode_header dev; - squashfs_symlink_inode_header symlink; - squashfs_reg_inode_header reg; - squashfs_dir_inode_header dir; - squashfs_ipc_inode_header ipc; -} squashfs_inode_header; + unsigned int start_block; + unsigned int parent_inode; +} __attribute__ ((packed)); + +struct squashfs_ldir_inode_header { + SQUASHFS_BASE_INODE_HEADER; + unsigned int nlink; + unsigned int file_size:27; + unsigned int offset:13; + unsigned int start_block; + unsigned int i_count:16; + unsigned int parent_inode; + struct squashfs_dir_index index[0]; +} __attribute__ ((packed)); + +union squashfs_inode_header { + struct squashfs_base_inode_header base; + struct squashfs_dev_inode_header dev; + struct squashfs_symlink_inode_header symlink; + struct squashfs_reg_inode_header reg; + struct squashfs_lreg_inode_header lreg; + struct squashfs_dir_inode_header dir; + struct squashfs_ldir_inode_header ldir; + struct squashfs_ipc_inode_header ipc; +}; -typedef struct { +struct squashfs_dir_entry { unsigned int offset:13; unsigned int type:3; unsigned int size:8; + int inode_number:16; char name[0]; -} __attribute__ ((packed)) squashfs_dir_entry; +} __attribute__ ((packed)); -typedef struct { +struct squashfs_dir_header { unsigned int count:8; - unsigned int start_block:24; -} __attribute__ ((packed)) squashfs_dir_header; - - -typedef struct { unsigned int start_block; + unsigned int inode_number; +} __attribute__ ((packed)); + +struct squashfs_fragment_entry { + long long start_block; unsigned int size; -} __attribute__ ((packed)) squashfs_fragment_entry; + unsigned int unused; +} __attribute__ ((packed)); extern int squashfs_uncompress_block(void *d, int dstlen, void *s, int srclen); extern int squashfs_uncompress_init(void); @@ -239,20 +317,28 @@ extern int squashfs_uncompress_exit(void); /* * macros to convert each packed bitfield structure from little endian to big - * endian and vice versa. These are needed when creating or using a filesystem on a - * machine with different byte ordering to the target architecture. + * endian and vice versa. These are needed when creating or using a filesystem + * on a machine with different byte ordering to the target architecture. * */ +#define SQUASHFS_SWAP_START \ + int bits;\ + int b_pos;\ + unsigned long long val;\ + unsigned char *s;\ + unsigned char *d; + #define SQUASHFS_SWAP_SUPER_BLOCK(s, d) {\ - SQUASHFS_MEMSET(s, d, sizeof(squashfs_super_block));\ + SQUASHFS_SWAP_START\ + SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_super_block));\ SQUASHFS_SWAP((s)->s_magic, d, 0, 32);\ SQUASHFS_SWAP((s)->inodes, d, 32, 32);\ - SQUASHFS_SWAP((s)->bytes_used, d, 64, 32);\ - SQUASHFS_SWAP((s)->uid_start, d, 96, 32);\ - SQUASHFS_SWAP((s)->guid_start, d, 128, 32);\ - SQUASHFS_SWAP((s)->inode_table_start, d, 160, 32);\ - SQUASHFS_SWAP((s)->directory_table_start, d, 192, 32);\ + SQUASHFS_SWAP((s)->bytes_used_2, d, 64, 32);\ + SQUASHFS_SWAP((s)->uid_start_2, d, 96, 32);\ + SQUASHFS_SWAP((s)->guid_start_2, d, 128, 32);\ + SQUASHFS_SWAP((s)->inode_table_start_2, d, 160, 32);\ + SQUASHFS_SWAP((s)->directory_table_start_2, d, 192, 32);\ SQUASHFS_SWAP((s)->s_major, d, 224, 16);\ SQUASHFS_SWAP((s)->s_minor, d, 240, 16);\ SQUASHFS_SWAP((s)->block_size_1, d, 256, 16);\ @@ -264,137 +350,218 @@ extern int squashfs_uncompress_exit(void); SQUASHFS_SWAP((s)->root_inode, d, 344, 64);\ SQUASHFS_SWAP((s)->block_size, d, 408, 32);\ SQUASHFS_SWAP((s)->fragments, d, 440, 32);\ - SQUASHFS_SWAP((s)->fragment_table_start, d, 472, 32);\ + SQUASHFS_SWAP((s)->fragment_table_start_2, d, 472, 32);\ + SQUASHFS_SWAP((s)->bytes_used, d, 504, 64);\ + SQUASHFS_SWAP((s)->uid_start, d, 568, 64);\ + SQUASHFS_SWAP((s)->guid_start, d, 632, 64);\ + SQUASHFS_SWAP((s)->inode_table_start, d, 696, 64);\ + SQUASHFS_SWAP((s)->directory_table_start, d, 760, 64);\ + SQUASHFS_SWAP((s)->fragment_table_start, d, 824, 64);\ + SQUASHFS_SWAP((s)->unused, d, 888, 64);\ } -#define SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, n) {\ +#define SQUASHFS_SWAP_BASE_INODE_CORE(s, d, n)\ SQUASHFS_MEMSET(s, d, n);\ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\ SQUASHFS_SWAP((s)->mode, d, 4, 12);\ SQUASHFS_SWAP((s)->uid, d, 16, 8);\ SQUASHFS_SWAP((s)->guid, d, 24, 8);\ + SQUASHFS_SWAP((s)->mtime, d, 32, 32);\ + SQUASHFS_SWAP((s)->inode_number, d, 64, 32); + +#define SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, n) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE(s, d, n)\ } -#define SQUASHFS_SWAP_IPC_INODE_HEADER(s, d) SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_ipc_inode_header)) +#define SQUASHFS_SWAP_IPC_INODE_HEADER(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ + sizeof(struct squashfs_ipc_inode_header))\ + SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ +} #define SQUASHFS_SWAP_DEV_INODE_HEADER(s, d) {\ - SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_dev_inode_header));\ - SQUASHFS_SWAP((s)->rdev, d, 32, 16);\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ + sizeof(struct squashfs_dev_inode_header)); \ + SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ + SQUASHFS_SWAP((s)->rdev, d, 128, 16);\ } #define SQUASHFS_SWAP_SYMLINK_INODE_HEADER(s, d) {\ - SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_symlink_inode_header));\ - SQUASHFS_SWAP((s)->symlink_size, d, 32, 16);\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ + sizeof(struct squashfs_symlink_inode_header));\ + SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ + SQUASHFS_SWAP((s)->symlink_size, d, 128, 16);\ } #define SQUASHFS_SWAP_REG_INODE_HEADER(s, d) {\ - SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_reg_inode_header));\ - SQUASHFS_SWAP((s)->mtime, d, 32, 32);\ - SQUASHFS_SWAP((s)->start_block, d, 64, 32);\ - SQUASHFS_SWAP((s)->fragment, d, 96, 32);\ - SQUASHFS_SWAP((s)->offset, d, 128, 32);\ - SQUASHFS_SWAP((s)->file_size, d, 160, SQUASHFS_MAX_FILE_SIZE_LOG);\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ + sizeof(struct squashfs_reg_inode_header));\ + SQUASHFS_SWAP((s)->start_block, d, 96, 64);\ + SQUASHFS_SWAP((s)->fragment, d, 160, 32);\ + SQUASHFS_SWAP((s)->offset, d, 192, 32);\ + SQUASHFS_SWAP((s)->file_size, d, 224, 32);\ +} + +#define SQUASHFS_SWAP_LREG_INODE_HEADER(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ + sizeof(struct squashfs_lreg_inode_header));\ + SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ + SQUASHFS_SWAP((s)->start_block, d, 128, 64);\ + SQUASHFS_SWAP((s)->fragment, d, 192, 32);\ + SQUASHFS_SWAP((s)->offset, d, 224, 32);\ + SQUASHFS_SWAP((s)->file_size, d, 256, 64);\ } #define SQUASHFS_SWAP_DIR_INODE_HEADER(s, d) {\ - SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_dir_inode_header));\ - SQUASHFS_SWAP((s)->file_size, d, 32, 19);\ - SQUASHFS_SWAP((s)->offset, d, 51, 13);\ - SQUASHFS_SWAP((s)->mtime, d, 64, 32);\ - SQUASHFS_SWAP((s)->start_block, d, 96, 24);\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ + sizeof(struct squashfs_dir_inode_header));\ + SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ + SQUASHFS_SWAP((s)->file_size, d, 128, 19);\ + SQUASHFS_SWAP((s)->offset, d, 147, 13);\ + SQUASHFS_SWAP((s)->start_block, d, 160, 32);\ + SQUASHFS_SWAP((s)->parent_inode, d, 192, 32);\ +} + +#define SQUASHFS_SWAP_LDIR_INODE_HEADER(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ + sizeof(struct squashfs_ldir_inode_header));\ + SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ + SQUASHFS_SWAP((s)->file_size, d, 128, 27);\ + SQUASHFS_SWAP((s)->offset, d, 155, 13);\ + SQUASHFS_SWAP((s)->start_block, d, 168, 32);\ + SQUASHFS_SWAP((s)->i_count, d, 200, 16);\ + SQUASHFS_SWAP((s)->parent_inode, d, 216, 32);\ +} + +#define SQUASHFS_SWAP_DIR_INDEX(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index));\ + SQUASHFS_SWAP((s)->index, d, 0, 32);\ + SQUASHFS_SWAP((s)->start_block, d, 32, 32);\ + SQUASHFS_SWAP((s)->size, d, 64, 8);\ } #define SQUASHFS_SWAP_DIR_HEADER(s, d) {\ - SQUASHFS_MEMSET(s, d, sizeof(squashfs_dir_header));\ + SQUASHFS_SWAP_START\ + SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header));\ SQUASHFS_SWAP((s)->count, d, 0, 8);\ - SQUASHFS_SWAP((s)->start_block, d, 8, 24);\ + SQUASHFS_SWAP((s)->start_block, d, 8, 32);\ + SQUASHFS_SWAP((s)->inode_number, d, 40, 32);\ } #define SQUASHFS_SWAP_DIR_ENTRY(s, d) {\ - SQUASHFS_MEMSET(s, d, sizeof(squashfs_dir_entry));\ + SQUASHFS_SWAP_START\ + SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry));\ SQUASHFS_SWAP((s)->offset, d, 0, 13);\ SQUASHFS_SWAP((s)->type, d, 13, 3);\ SQUASHFS_SWAP((s)->size, d, 16, 8);\ + SQUASHFS_SWAP((s)->inode_number, d, 24, 16);\ } #define SQUASHFS_SWAP_FRAGMENT_ENTRY(s, d) {\ - SQUASHFS_MEMSET(s, d, sizeof(squashfs_fragment_entry));\ - SQUASHFS_SWAP((s)->start_block, d, 0, 32);\ - SQUASHFS_SWAP((s)->size, d, 32, 32);\ + SQUASHFS_SWAP_START\ + SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry));\ + SQUASHFS_SWAP((s)->start_block, d, 0, 64);\ + SQUASHFS_SWAP((s)->size, d, 64, 32);\ } #define SQUASHFS_SWAP_SHORTS(s, d, n) {\ int entry;\ int bit_position;\ + SQUASHFS_SWAP_START\ SQUASHFS_MEMSET(s, d, n * 2);\ - for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += 16)\ + for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ + 16)\ SQUASHFS_SWAP(s[entry], d, bit_position, 16);\ } #define SQUASHFS_SWAP_INTS(s, d, n) {\ int entry;\ int bit_position;\ + SQUASHFS_SWAP_START\ SQUASHFS_MEMSET(s, d, n * 4);\ - for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += 32)\ + for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ + 32)\ SQUASHFS_SWAP(s[entry], d, bit_position, 32);\ } +#define SQUASHFS_SWAP_LONG_LONGS(s, d, n) {\ + int entry;\ + int bit_position;\ + SQUASHFS_SWAP_START\ + SQUASHFS_MEMSET(s, d, n * 8);\ + for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ + 64)\ + SQUASHFS_SWAP(s[entry], d, bit_position, 64);\ +} + #define SQUASHFS_SWAP_DATA(s, d, n, bits) {\ int entry;\ int bit_position;\ + SQUASHFS_SWAP_START\ SQUASHFS_MEMSET(s, d, n * bits / 8);\ - for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += bits)\ + for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ + bits)\ SQUASHFS_SWAP(s[entry], d, bit_position, bits);\ } -#define SQUASHFS_SWAP_FRAGMENT_INDEXES(s, d, n) SQUASHFS_SWAP_INTS(s, d, n) +#define SQUASHFS_SWAP_FRAGMENT_INDEXES(s, d, n) SQUASHFS_SWAP_LONG_LONGS(s, d, n) + +#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY -#ifdef SQUASHFS_1_0_COMPATIBILITY -typedef struct { +struct squashfs_base_inode_header_1 { unsigned int inode_type:4; unsigned int mode:12; /* protection */ unsigned int uid:4; /* index into uid table */ unsigned int guid:4; /* index into guid table */ -} __attribute__ ((packed)) squashfs_base_inode_header_1; +} __attribute__ ((packed)); -typedef struct { +struct squashfs_ipc_inode_header_1 { unsigned int inode_type:4; unsigned int mode:12; /* protection */ unsigned int uid:4; /* index into uid table */ unsigned int guid:4; /* index into guid table */ unsigned int type:4; unsigned int offset:4; -} __attribute__ ((packed)) squashfs_ipc_inode_header_1; +} __attribute__ ((packed)); -typedef struct { +struct squashfs_dev_inode_header_1 { unsigned int inode_type:4; unsigned int mode:12; /* protection */ unsigned int uid:4; /* index into uid table */ unsigned int guid:4; /* index into guid table */ unsigned short rdev; -} __attribute__ ((packed)) squashfs_dev_inode_header_1; +} __attribute__ ((packed)); -typedef struct { +struct squashfs_symlink_inode_header_1 { unsigned int inode_type:4; unsigned int mode:12; /* protection */ unsigned int uid:4; /* index into uid table */ unsigned int guid:4; /* index into guid table */ unsigned short symlink_size; char symlink[0]; -} __attribute__ ((packed)) squashfs_symlink_inode_header_1; +} __attribute__ ((packed)); -typedef struct { +struct squashfs_reg_inode_header_1 { unsigned int inode_type:4; unsigned int mode:12; /* protection */ unsigned int uid:4; /* index into uid table */ unsigned int guid:4; /* index into guid table */ unsigned int mtime; - squashfs_block start_block; - unsigned int file_size:SQUASHFS_MAX_FILE_SIZE_LOG; + unsigned int start_block; + unsigned int file_size:32; unsigned short block_list[0]; -} __attribute__ ((packed)) squashfs_reg_inode_header_1; +} __attribute__ ((packed)); -typedef struct { +struct squashfs_dir_inode_header_1 { unsigned int inode_type:4; unsigned int mode:12; /* protection */ unsigned int uid:4; /* index into uid table */ @@ -403,72 +570,308 @@ typedef struct { unsigned int offset:13; unsigned int mtime; unsigned int start_block:24; -} __attribute__ ((packed)) squashfs_dir_inode_header_1; +} __attribute__ ((packed)); -#define SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, n) {\ +#define SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, n) \ SQUASHFS_MEMSET(s, d, n);\ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\ SQUASHFS_SWAP((s)->mode, d, 4, 12);\ SQUASHFS_SWAP((s)->uid, d, 16, 4);\ - SQUASHFS_SWAP((s)->guid, d, 20, 4);\ + SQUASHFS_SWAP((s)->guid, d, 20, 4); + +#define SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, n) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, n)\ } #define SQUASHFS_SWAP_IPC_INODE_HEADER_1(s, d) {\ - SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, sizeof(squashfs_ipc_inode_header_1));\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ + sizeof(struct squashfs_ipc_inode_header_1));\ SQUASHFS_SWAP((s)->type, d, 24, 4);\ SQUASHFS_SWAP((s)->offset, d, 28, 4);\ } #define SQUASHFS_SWAP_DEV_INODE_HEADER_1(s, d) {\ - SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, sizeof(squashfs_dev_inode_header_1));\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ + sizeof(struct squashfs_dev_inode_header_1));\ SQUASHFS_SWAP((s)->rdev, d, 24, 16);\ } #define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_1(s, d) {\ - SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_symlink_inode_header_1));\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ + sizeof(struct squashfs_symlink_inode_header_1));\ SQUASHFS_SWAP((s)->symlink_size, d, 24, 16);\ } #define SQUASHFS_SWAP_REG_INODE_HEADER_1(s, d) {\ - SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_reg_inode_header_1));\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ + sizeof(struct squashfs_reg_inode_header_1));\ SQUASHFS_SWAP((s)->mtime, d, 24, 32);\ SQUASHFS_SWAP((s)->start_block, d, 56, 32);\ SQUASHFS_SWAP((s)->file_size, d, 88, SQUASHFS_MAX_FILE_SIZE_LOG);\ } #define SQUASHFS_SWAP_DIR_INODE_HEADER_1(s, d) {\ - SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_dir_inode_header_1));\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ + sizeof(struct squashfs_dir_inode_header_1));\ SQUASHFS_SWAP((s)->file_size, d, 24, 19);\ SQUASHFS_SWAP((s)->offset, d, 43, 13);\ SQUASHFS_SWAP((s)->mtime, d, 56, 32);\ SQUASHFS_SWAP((s)->start_block, d, 88, 24);\ } + +#endif + +#ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY + +struct squashfs_dir_index_2 { + unsigned int index:27; + unsigned int start_block:29; + unsigned char size; + unsigned char name[0]; +} __attribute__ ((packed)); + +struct squashfs_base_inode_header_2 { + unsigned int inode_type:4; + unsigned int mode:12; /* protection */ + unsigned int uid:8; /* index into uid table */ + unsigned int guid:8; /* index into guid table */ +} __attribute__ ((packed)); + +struct squashfs_ipc_inode_header_2 { + unsigned int inode_type:4; + unsigned int mode:12; /* protection */ + unsigned int uid:8; /* index into uid table */ + unsigned int guid:8; /* index into guid table */ +} __attribute__ ((packed)); + +struct squashfs_dev_inode_header_2 { + unsigned int inode_type:4; + unsigned int mode:12; /* protection */ + unsigned int uid:8; /* index into uid table */ + unsigned int guid:8; /* index into guid table */ + unsigned short rdev; +} __attribute__ ((packed)); + +struct squashfs_symlink_inode_header_2 { + unsigned int inode_type:4; + unsigned int mode:12; /* protection */ + unsigned int uid:8; /* index into uid table */ + unsigned int guid:8; /* index into guid table */ + unsigned short symlink_size; + char symlink[0]; +} __attribute__ ((packed)); + +struct squashfs_reg_inode_header_2 { + unsigned int inode_type:4; + unsigned int mode:12; /* protection */ + unsigned int uid:8; /* index into uid table */ + unsigned int guid:8; /* index into guid table */ + unsigned int mtime; + unsigned int start_block; + unsigned int fragment; + unsigned int offset; + unsigned int file_size:32; + unsigned short block_list[0]; +} __attribute__ ((packed)); + +struct squashfs_dir_inode_header_2 { + unsigned int inode_type:4; + unsigned int mode:12; /* protection */ + unsigned int uid:8; /* index into uid table */ + unsigned int guid:8; /* index into guid table */ + unsigned int file_size:19; + unsigned int offset:13; + unsigned int mtime; + unsigned int start_block:24; +} __attribute__ ((packed)); + +struct squashfs_ldir_inode_header_2 { + unsigned int inode_type:4; + unsigned int mode:12; /* protection */ + unsigned int uid:8; /* index into uid table */ + unsigned int guid:8; /* index into guid table */ + unsigned int file_size:27; + unsigned int offset:13; + unsigned int mtime; + unsigned int start_block:24; + unsigned int i_count:16; + struct squashfs_dir_index_2 index[0]; +} __attribute__ ((packed)); + +union squashfs_inode_header_2 { + struct squashfs_base_inode_header_2 base; + struct squashfs_dev_inode_header_2 dev; + struct squashfs_symlink_inode_header_2 symlink; + struct squashfs_reg_inode_header_2 reg; + struct squashfs_dir_inode_header_2 dir; + struct squashfs_ldir_inode_header_2 ldir; + struct squashfs_ipc_inode_header_2 ipc; +}; + +struct squashfs_dir_header_2 { + unsigned int count:8; + unsigned int start_block:24; +} __attribute__ ((packed)); + +struct squashfs_dir_entry_2 { + unsigned int offset:13; + unsigned int type:3; + unsigned int size:8; + char name[0]; +} __attribute__ ((packed)); + +struct squashfs_fragment_entry_2 { + unsigned int start_block; + unsigned int size; +} __attribute__ ((packed)); + +#define SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, n)\ + SQUASHFS_MEMSET(s, d, n);\ + SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\ + SQUASHFS_SWAP((s)->mode, d, 4, 12);\ + SQUASHFS_SWAP((s)->uid, d, 16, 8);\ + SQUASHFS_SWAP((s)->guid, d, 24, 8);\ + +#define SQUASHFS_SWAP_BASE_INODE_HEADER_2(s, d, n) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, n)\ +} + +#define SQUASHFS_SWAP_IPC_INODE_HEADER_2(s, d) \ + SQUASHFS_SWAP_BASE_INODE_HEADER_2(s, d, sizeof(struct squashfs_ipc_inode_header_2)) + +#define SQUASHFS_SWAP_DEV_INODE_HEADER_2(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ + sizeof(struct squashfs_dev_inode_header_2)); \ + SQUASHFS_SWAP((s)->rdev, d, 32, 16);\ +} + +#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_2(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ + sizeof(struct squashfs_symlink_inode_header_2));\ + SQUASHFS_SWAP((s)->symlink_size, d, 32, 16);\ +} + +#define SQUASHFS_SWAP_REG_INODE_HEADER_2(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ + sizeof(struct squashfs_reg_inode_header_2));\ + SQUASHFS_SWAP((s)->mtime, d, 32, 32);\ + SQUASHFS_SWAP((s)->start_block, d, 64, 32);\ + SQUASHFS_SWAP((s)->fragment, d, 96, 32);\ + SQUASHFS_SWAP((s)->offset, d, 128, 32);\ + SQUASHFS_SWAP((s)->file_size, d, 160, SQUASHFS_MAX_FILE_SIZE_LOG);\ +} + +#define SQUASHFS_SWAP_DIR_INODE_HEADER_2(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ + sizeof(struct squashfs_dir_inode_header_2));\ + SQUASHFS_SWAP((s)->file_size, d, 32, 19);\ + SQUASHFS_SWAP((s)->offset, d, 51, 13);\ + SQUASHFS_SWAP((s)->mtime, d, 64, 32);\ + SQUASHFS_SWAP((s)->start_block, d, 96, 24);\ +} + +#define SQUASHFS_SWAP_LDIR_INODE_HEADER_2(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ + sizeof(struct squashfs_ldir_inode_header_2));\ + SQUASHFS_SWAP((s)->file_size, d, 32, 27);\ + SQUASHFS_SWAP((s)->offset, d, 59, 13);\ + SQUASHFS_SWAP((s)->mtime, d, 72, 32);\ + SQUASHFS_SWAP((s)->start_block, d, 104, 24);\ + SQUASHFS_SWAP((s)->i_count, d, 128, 16);\ +} + +#define SQUASHFS_SWAP_DIR_INDEX_2(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index_2));\ + SQUASHFS_SWAP((s)->index, d, 0, 27);\ + SQUASHFS_SWAP((s)->start_block, d, 27, 29);\ + SQUASHFS_SWAP((s)->size, d, 56, 8);\ +} +#define SQUASHFS_SWAP_DIR_HEADER_2(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header_2));\ + SQUASHFS_SWAP((s)->count, d, 0, 8);\ + SQUASHFS_SWAP((s)->start_block, d, 8, 24);\ +} + +#define SQUASHFS_SWAP_DIR_ENTRY_2(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry_2));\ + SQUASHFS_SWAP((s)->offset, d, 0, 13);\ + SQUASHFS_SWAP((s)->type, d, 13, 3);\ + SQUASHFS_SWAP((s)->size, d, 16, 8);\ +} + +#define SQUASHFS_SWAP_FRAGMENT_ENTRY_2(s, d) {\ + SQUASHFS_SWAP_START\ + SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry_2));\ + SQUASHFS_SWAP((s)->start_block, d, 0, 32);\ + SQUASHFS_SWAP((s)->size, d, 32, 32);\ +} + +#define SQUASHFS_SWAP_FRAGMENT_INDEXES_2(s, d, n) SQUASHFS_SWAP_INTS(s, d, n) + +/* fragment and fragment table defines */ +#define SQUASHFS_FRAGMENT_BYTES_2(A) (A * sizeof(struct squashfs_fragment_entry_2)) + +#define SQUASHFS_FRAGMENT_INDEX_2(A) (SQUASHFS_FRAGMENT_BYTES_2(A) / \ + SQUASHFS_METADATA_SIZE) + +#define SQUASHFS_FRAGMENT_INDEX_OFFSET_2(A) (SQUASHFS_FRAGMENT_BYTES_2(A) % \ + SQUASHFS_METADATA_SIZE) + +#define SQUASHFS_FRAGMENT_INDEXES_2(A) ((SQUASHFS_FRAGMENT_BYTES_2(A) + \ + SQUASHFS_METADATA_SIZE - 1) / \ + SQUASHFS_METADATA_SIZE) + +#define SQUASHFS_FRAGMENT_INDEX_BYTES_2(A) (SQUASHFS_FRAGMENT_INDEXES_2(A) *\ + sizeof(int)) + #endif #ifdef __KERNEL__ + /* * macros used to swap each structure entry, taking into account - * bitfields and different bitfield placing conventions on differing architectures + * bitfields and different bitfield placing conventions on differing + * architectures */ + #include <asm/byteorder.h> + #ifdef __BIG_ENDIAN /* convert from little endian to big endian */ -#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, tbits, b_pos) +#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, \ + tbits, b_pos) #else /* convert from big endian to little endian */ -#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, tbits, 64 - tbits - b_pos) +#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, \ + tbits, 64 - tbits - b_pos) #endif #define _SQUASHFS_SWAP(value, p, pos, tbits, SHIFT) {\ - int bits;\ - int b_pos = pos % 8;\ - unsigned long long val = 0;\ - unsigned char *s = (unsigned char *)p + (pos / 8);\ - unsigned char *d = ((unsigned char *) &val) + 7;\ + b_pos = pos % 8;\ + val = 0;\ + s = (unsigned char *)p + (pos / 8);\ + d = ((unsigned char *) &val) + 7;\ for(bits = 0; bits < (tbits + b_pos); bits += 8) \ *d-- = *s++;\ value = (val >> (SHIFT))/* & ((1 << tbits) - 1)*/;\ } + #define SQUASHFS_MEMSET(s, d, n) memset(s, 0, n); + #endif #endif |