11f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#ifndef SQUASHFS_FS 21f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_FS 31f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* 41f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * Squashfs 51f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * 65bffb42fa28e42301240eb3b41890bf60ac97966plougher * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008 7f6cd337f8de328e2b448b9f29c00d9132748f7feplougher * Phillip Lougher <phillip@lougher.demon.co.uk> 81f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * 91f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * This program is free software; you can redistribute it and/or 101f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * modify it under the terms of the GNU General Public License 111f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * as published by the Free Software Foundation; either version 2, 121f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * or (at your option) any later version. 131f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * 141f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * This program is distributed in the hope that it will be useful, 151f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * but WITHOUT ANY WARRANTY; without even the implied warranty of 161f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 171f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * GNU General Public License for more details. 181f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * 191f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * You should have received a copy of the GNU General Public License 201f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * along with this program; if not, write to the Free Software 21a3e28ecaf227d2c03ec6724dd718e3c5a12b74efplougher * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 221f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * 231f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * squashfs_fs.h 241f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher */ 251f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 2669fd8a885cc67e2ee05d167b670afb1ae5a26568plougher#define SQUASHFS_CACHED_FRAGMENTS CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE 271b899fc316f7eba7a31da12dc0c9b69ada441059plougher#define SQUASHFS_MAJOR 4 281b899fc316f7eba7a31da12dc0c9b69ada441059plougher#define SQUASHFS_MINOR 0 291f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_MAGIC 0x73717368 301f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_START 0 311f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 321f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* size of metadata (inode and directory) blocks */ 331f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_METADATA_SIZE 8192 341f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_METADATA_LOG 13 351f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 361f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* default size of data blocks */ 370544edfef22ccc79dcffd75db37e2cb210116fd4plougher#define SQUASHFS_FILE_SIZE 131072 380544edfef22ccc79dcffd75db37e2cb210116fd4plougher#define SQUASHFS_FILE_LOG 17 391f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 400544edfef22ccc79dcffd75db37e2cb210116fd4plougher#define SQUASHFS_FILE_MAX_SIZE 1048576 411f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 421f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* Max number of uids and gids */ 431b899fc316f7eba7a31da12dc0c9b69ada441059plougher#define SQUASHFS_IDS 65536 441f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 451f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* Max length of filename (not 255) */ 461f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_NAME_LEN 256 471f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 48d09b5897842f39b572ea50049234b75a7c2cf36dplougher#define SQUASHFS_INVALID_FRAG (0xffffffffU) 49d09b5897842f39b572ea50049234b75a7c2cf36dplougher#define SQUASHFS_INVALID_BLK (-1LL) 501f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 511f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* Filesystem flags */ 521f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_NOI 0 531f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_NOD 1 541f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_NOF 3 551f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_NO_FRAG 4 561f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_ALWAYS_FRAG 5 571f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_DUPLICATE 6 5829e5f570cf51b2f15079a81aec8cf1595f3082cfplougher#define SQUASHFS_EXPORT 7 591f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 601f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_BIT(flag, bit) ((flag >> bit) & 1) 611f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 621f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_UNCOMPRESSED_INODES(flags) SQUASHFS_BIT(flags, \ 631f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher SQUASHFS_NOI) 641f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 651f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_UNCOMPRESSED_DATA(flags) SQUASHFS_BIT(flags, \ 661f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher SQUASHFS_NOD) 671f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 681f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_UNCOMPRESSED_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ 691f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher SQUASHFS_NOF) 701f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 711f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_NO_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ 721f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher SQUASHFS_NO_FRAG) 731f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 741f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_ALWAYS_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ 751f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher SQUASHFS_ALWAYS_FRAG) 761f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 771f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_DUPLICATES(flags) SQUASHFS_BIT(flags, \ 781f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher SQUASHFS_DUPLICATE) 791f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 8029e5f570cf51b2f15079a81aec8cf1595f3082cfplougher#define SQUASHFS_EXPORTABLE(flags) SQUASHFS_BIT(flags, \ 8129e5f570cf51b2f15079a81aec8cf1595f3082cfplougher SQUASHFS_EXPORT) 8229e5f570cf51b2f15079a81aec8cf1595f3082cfplougher 831f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* Max number of types and file types */ 841f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_DIR_TYPE 1 85183b4ee6320030ce1bd8980757c42071779973bcplougher#define SQUASHFS_REG_TYPE 2 861f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_SYMLINK_TYPE 3 871f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_BLKDEV_TYPE 4 881f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_CHRDEV_TYPE 5 891f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_FIFO_TYPE 6 901f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_SOCKET_TYPE 7 911f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_LDIR_TYPE 8 921f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_LREG_TYPE 9 939fca346e286002f3e0db6201923b538a740c78b4plougher#define SQUASHFS_LSYMLINK_TYPE 10 949fca346e286002f3e0db6201923b538a740c78b4plougher#define SQUASHFS_LBLKDEV_TYPE 11 959fca346e286002f3e0db6201923b538a740c78b4plougher#define SQUASHFS_LCHRDEV_TYPE 12 969fca346e286002f3e0db6201923b538a740c78b4plougher#define SQUASHFS_LFIFO_TYPE 13 979fca346e286002f3e0db6201923b538a740c78b4plougher#define SQUASHFS_LSOCKET_TYPE 14 981f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 991f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* Flag whether block is compressed or uncompressed, bit is set if block is 1001f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * uncompressed */ 1011f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_COMPRESSED_BIT (1 << 15) 1021f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1031f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_COMPRESSED_SIZE(B) (((B) & ~SQUASHFS_COMPRESSED_BIT) ? \ 1041f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher (B) & ~SQUASHFS_COMPRESSED_BIT : SQUASHFS_COMPRESSED_BIT) 1051f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1061f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_COMPRESSED(B) (!((B) & SQUASHFS_COMPRESSED_BIT)) 1071f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 108795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher#define SQUASHFS_COMPRESSED_BIT_BLOCK (1 << 24) 1091f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 110f03d02e0d5c5f7d97d63adc665dd9f524e134c23plougher#define SQUASHFS_COMPRESSED_SIZE_BLOCK(B) ((B) & \ 111795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher ~SQUASHFS_COMPRESSED_BIT_BLOCK) 1121f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1131f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_COMPRESSED_BLOCK(B) (!((B) & SQUASHFS_COMPRESSED_BIT_BLOCK)) 1141f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1151f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* 1161f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * Inode number ops. Inodes consist of a compressed block number, and an 117d09b5897842f39b572ea50049234b75a7c2cf36dplougher * uncompressed offset within that block 1181f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher */ 119d09b5897842f39b572ea50049234b75a7c2cf36dplougher#define SQUASHFS_INODE_BLK(A) ((unsigned int) ((A) >> 16)) 1201f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 121d09b5897842f39b572ea50049234b75a7c2cf36dplougher#define SQUASHFS_INODE_OFFSET(A) ((unsigned int) ((A) & 0xffff)) 1221f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 123795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher#define SQUASHFS_MKINODE(A, B) ((long long)(((long long) (A)\ 124795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher << 16) + (B))) 1251f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1261f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* Translate between VFS mode and squashfs mode */ 127d09b5897842f39b572ea50049234b75a7c2cf36dplougher#define SQUASHFS_MODE(A) ((A) & 0xfff) 1281f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1291f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* fragment and fragment table defines */ 130d09b5897842f39b572ea50049234b75a7c2cf36dplougher#define SQUASHFS_FRAGMENT_BYTES(A) \ 131d09b5897842f39b572ea50049234b75a7c2cf36dplougher ((A) * sizeof(struct squashfs_fragment_entry)) 1321f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1331f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_FRAGMENT_INDEX(A) (SQUASHFS_FRAGMENT_BYTES(A) / \ 1341f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher SQUASHFS_METADATA_SIZE) 1351f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1361f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_FRAGMENT_INDEX_OFFSET(A) (SQUASHFS_FRAGMENT_BYTES(A) % \ 1371f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher SQUASHFS_METADATA_SIZE) 1381f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1391f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_FRAGMENT_INDEXES(A) ((SQUASHFS_FRAGMENT_BYTES(A) + \ 1401f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher SQUASHFS_METADATA_SIZE - 1) / \ 1411f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher SQUASHFS_METADATA_SIZE) 1421f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1431f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_FRAGMENT_INDEX_BYTES(A) (SQUASHFS_FRAGMENT_INDEXES(A) *\ 1441f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher sizeof(long long)) 1451f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 14629e5f570cf51b2f15079a81aec8cf1595f3082cfplougher/* inode lookup table defines */ 14769fd8a885cc67e2ee05d167b670afb1ae5a26568plougher#define SQUASHFS_LOOKUP_BYTES(A) ((A) * sizeof(long long)) 14829e5f570cf51b2f15079a81aec8cf1595f3082cfplougher 149795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher#define SQUASHFS_LOOKUP_BLOCK(A) (SQUASHFS_LOOKUP_BYTES(A) / \ 150795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher SQUASHFS_METADATA_SIZE) 15129e5f570cf51b2f15079a81aec8cf1595f3082cfplougher 152795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher#define SQUASHFS_LOOKUP_BLOCK_OFFSET(A) (SQUASHFS_LOOKUP_BYTES(A) % \ 153795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher SQUASHFS_METADATA_SIZE) 15429e5f570cf51b2f15079a81aec8cf1595f3082cfplougher 15529e5f570cf51b2f15079a81aec8cf1595f3082cfplougher#define SQUASHFS_LOOKUP_BLOCKS(A) ((SQUASHFS_LOOKUP_BYTES(A) + \ 15629e5f570cf51b2f15079a81aec8cf1595f3082cfplougher SQUASHFS_METADATA_SIZE - 1) / \ 15729e5f570cf51b2f15079a81aec8cf1595f3082cfplougher SQUASHFS_METADATA_SIZE) 15829e5f570cf51b2f15079a81aec8cf1595f3082cfplougher 15929e5f570cf51b2f15079a81aec8cf1595f3082cfplougher#define SQUASHFS_LOOKUP_BLOCK_BYTES(A) (SQUASHFS_LOOKUP_BLOCKS(A) *\ 16029e5f570cf51b2f15079a81aec8cf1595f3082cfplougher sizeof(long long)) 16129e5f570cf51b2f15079a81aec8cf1595f3082cfplougher 162d09b5897842f39b572ea50049234b75a7c2cf36dplougher/* uid/gid lookup table defines */ 163795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher#define SQUASHFS_ID_BYTES(A) ((A) * sizeof(unsigned int)) 1641b899fc316f7eba7a31da12dc0c9b69ada441059plougher 1651b899fc316f7eba7a31da12dc0c9b69ada441059plougher#define SQUASHFS_ID_BLOCK(A) (SQUASHFS_ID_BYTES(A) / \ 166795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher SQUASHFS_METADATA_SIZE) 1671b899fc316f7eba7a31da12dc0c9b69ada441059plougher 168795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher#define SQUASHFS_ID_BLOCK_OFFSET(A) (SQUASHFS_ID_BYTES(A) % \ 169795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher SQUASHFS_METADATA_SIZE) 1701b899fc316f7eba7a31da12dc0c9b69ada441059plougher 171795ad5f4e3b20918fd8bbd30033e35a96cc1d13fplougher#define SQUASHFS_ID_BLOCKS(A) ((SQUASHFS_ID_BYTES(A) + \ 1721b899fc316f7eba7a31da12dc0c9b69ada441059plougher SQUASHFS_METADATA_SIZE - 1) / \ 1731b899fc316f7eba7a31da12dc0c9b69ada441059plougher SQUASHFS_METADATA_SIZE) 1741b899fc316f7eba7a31da12dc0c9b69ada441059plougher 1751b899fc316f7eba7a31da12dc0c9b69ada441059plougher#define SQUASHFS_ID_BLOCK_BYTES(A) (SQUASHFS_ID_BLOCKS(A) *\ 1761b899fc316f7eba7a31da12dc0c9b69ada441059plougher sizeof(long long)) 1771b899fc316f7eba7a31da12dc0c9b69ada441059plougher 1781f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* cached data constants for filesystem */ 1791f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_CACHED_BLKS 8 1801f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1811f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_MAX_FILE_SIZE_LOG 64 1821f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 183d09b5897842f39b572ea50049234b75a7c2cf36dplougher#define SQUASHFS_MAX_FILE_SIZE (1LL << \ 1841f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher (SQUASHFS_MAX_FILE_SIZE_LOG - 2)) 1851f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 1861f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#define SQUASHFS_MARKER_BYTE 0xff 1871f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 188f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher/* meta index cache */ 189f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher#define SQUASHFS_META_INDEXES (SQUASHFS_METADATA_SIZE / sizeof(unsigned int)) 19085b08772b0e6923ed3f3764685675fc8fcbaf645plougher#define SQUASHFS_META_ENTRIES 127 19185b08772b0e6923ed3f3764685675fc8fcbaf645plougher#define SQUASHFS_META_SLOTS 8 192f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher 193f9c72b137336d5c1d4bdf2792f2bc5142713676bplougherstruct meta_entry { 194f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher long long data_block; 195f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher unsigned int index_block; 196f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher unsigned short offset; 197f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher unsigned short pad; 198f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher}; 199f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher 200f9c72b137336d5c1d4bdf2792f2bc5142713676bplougherstruct meta_index { 201f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher unsigned int inode_number; 202f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher unsigned int offset; 203f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher unsigned short entries; 204f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher unsigned short skip; 205f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher unsigned short locked; 206f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher unsigned short pad; 207f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher struct meta_entry meta_entry[SQUASHFS_META_ENTRIES]; 208f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher}; 209f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher 210f9c72b137336d5c1d4bdf2792f2bc5142713676bplougher 2111f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher/* 2121f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher * definitions for structures on disk 2131f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher */ 21437f71a72d096b8ee99bdf1923330277b0ff6f1e2plougher#define ZLIB_COMPRESSION 1 2151b899fc316f7eba7a31da12dc0c9b69ada441059plougher 2161f413c84d736495fd61ff05ebe52c3a01a4d95c2plougherstruct squashfs_super_block { 217703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le32 s_magic; 218703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le32 inodes; 219d09b5897842f39b572ea50049234b75a7c2cf36dplougher __le32 mkfs_time; 220703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le32 block_size; 221703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le32 fragments; 222703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le16 compression; 223703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le16 block_log; 224703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le16 flags; 225703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le16 no_ids; 226703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le16 s_major; 227703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le16 s_minor; 228703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le64 root_inode; 229703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le64 bytes_used; 230703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le64 id_table_start; 231703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le64 xattr_table_start; 232703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le64 inode_table_start; 233703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le64 directory_table_start; 234703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le64 fragment_table_start; 235703840aef7b3a48bef2ba561bb87894e97a8fa30plougher __le64 lookup_table_start; 2361b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 2371f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 2381f413c84d736495fd61ff05ebe52c3a01a4d95c2plougherstruct squashfs_dir_index { 239c481f34ba50d3826970100da1cea4885656e7235plougher __le32 index; 240c481f34ba50d3826970100da1cea4885656e7235plougher __le32 start_block; 241c481f34ba50d3826970100da1cea4885656e7235plougher __le32 size; 2421f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher unsigned char name[0]; 2431b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 2441f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 245ffd6024da956882433848ccf368da76116fa9241plougherstruct squashfs_base_inode { 246ffd6024da956882433848ccf368da76116fa9241plougher __le16 inode_type; 247ffd6024da956882433848ccf368da76116fa9241plougher __le16 mode; 248ffd6024da956882433848ccf368da76116fa9241plougher __le16 uid; 249ffd6024da956882433848ccf368da76116fa9241plougher __le16 guid; 250ffd6024da956882433848ccf368da76116fa9241plougher __le32 mtime; 2516bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 inode_number; 2521b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 2531f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 254ffd6024da956882433848ccf368da76116fa9241plougherstruct squashfs_ipc_inode { 255ffd6024da956882433848ccf368da76116fa9241plougher __le16 inode_type; 256ffd6024da956882433848ccf368da76116fa9241plougher __le16 mode; 257ffd6024da956882433848ccf368da76116fa9241plougher __le16 uid; 258ffd6024da956882433848ccf368da76116fa9241plougher __le16 guid; 259ffd6024da956882433848ccf368da76116fa9241plougher __le32 mtime; 260ffd6024da956882433848ccf368da76116fa9241plougher __le32 inode_number; 2616bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 nlink; 2621b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 2631f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 264ffd6024da956882433848ccf368da76116fa9241plougherstruct squashfs_dev_inode { 265ffd6024da956882433848ccf368da76116fa9241plougher __le16 inode_type; 266ffd6024da956882433848ccf368da76116fa9241plougher __le16 mode; 267ffd6024da956882433848ccf368da76116fa9241plougher __le16 uid; 268ffd6024da956882433848ccf368da76116fa9241plougher __le16 guid; 269ffd6024da956882433848ccf368da76116fa9241plougher __le32 mtime; 270ffd6024da956882433848ccf368da76116fa9241plougher __le32 inode_number; 2716bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 nlink; 2726bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 rdev; 2731b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 27469fd8a885cc67e2ee05d167b670afb1ae5a26568plougher 275ffd6024da956882433848ccf368da76116fa9241plougherstruct squashfs_symlink_inode { 276ffd6024da956882433848ccf368da76116fa9241plougher __le16 inode_type; 277ffd6024da956882433848ccf368da76116fa9241plougher __le16 mode; 278ffd6024da956882433848ccf368da76116fa9241plougher __le16 uid; 279ffd6024da956882433848ccf368da76116fa9241plougher __le16 guid; 280ffd6024da956882433848ccf368da76116fa9241plougher __le32 mtime; 281ffd6024da956882433848ccf368da76116fa9241plougher __le32 inode_number; 2826bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 nlink; 2836bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 symlink_size; 2841f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher char symlink[0]; 2851b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 2861f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 287ffd6024da956882433848ccf368da76116fa9241plougherstruct squashfs_reg_inode { 288ffd6024da956882433848ccf368da76116fa9241plougher __le16 inode_type; 289ffd6024da956882433848ccf368da76116fa9241plougher __le16 mode; 290ffd6024da956882433848ccf368da76116fa9241plougher __le16 uid; 291ffd6024da956882433848ccf368da76116fa9241plougher __le16 guid; 292ffd6024da956882433848ccf368da76116fa9241plougher __le32 mtime; 293ffd6024da956882433848ccf368da76116fa9241plougher __le32 inode_number; 2946bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 start_block; 2956bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 fragment; 2966bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 offset; 2976bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 file_size; 2986bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le16 block_list[0]; 2991b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 3001f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 301ffd6024da956882433848ccf368da76116fa9241plougherstruct squashfs_lreg_inode { 302ffd6024da956882433848ccf368da76116fa9241plougher __le16 inode_type; 303ffd6024da956882433848ccf368da76116fa9241plougher __le16 mode; 304ffd6024da956882433848ccf368da76116fa9241plougher __le16 uid; 305ffd6024da956882433848ccf368da76116fa9241plougher __le16 guid; 306ffd6024da956882433848ccf368da76116fa9241plougher __le32 mtime; 307ffd6024da956882433848ccf368da76116fa9241plougher __le32 inode_number; 3086bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le64 start_block; 3096bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le64 file_size; 3106bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le64 sparse; 3116bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 nlink; 3126bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 fragment; 3136bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 offset; 3146bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 xattr; 3156bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le16 block_list[0]; 3161b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 3171f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 318ffd6024da956882433848ccf368da76116fa9241plougherstruct squashfs_dir_inode { 319ffd6024da956882433848ccf368da76116fa9241plougher __le16 inode_type; 320ffd6024da956882433848ccf368da76116fa9241plougher __le16 mode; 321ffd6024da956882433848ccf368da76116fa9241plougher __le16 uid; 322ffd6024da956882433848ccf368da76116fa9241plougher __le16 guid; 323ffd6024da956882433848ccf368da76116fa9241plougher __le32 mtime; 324ffd6024da956882433848ccf368da76116fa9241plougher __le32 inode_number; 3256bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 start_block; 3266bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 nlink; 3276bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le16 file_size; 3286bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le16 offset; 3296bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 parent_inode; 3301b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 3311f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 332ffd6024da956882433848ccf368da76116fa9241plougherstruct squashfs_ldir_inode { 333ffd6024da956882433848ccf368da76116fa9241plougher __le16 inode_type; 334ffd6024da956882433848ccf368da76116fa9241plougher __le16 mode; 335ffd6024da956882433848ccf368da76116fa9241plougher __le16 uid; 336ffd6024da956882433848ccf368da76116fa9241plougher __le16 guid; 337ffd6024da956882433848ccf368da76116fa9241plougher __le32 mtime; 338ffd6024da956882433848ccf368da76116fa9241plougher __le32 inode_number; 3396bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 nlink; 3406bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 file_size; 3416bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 start_block; 3426bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le32 parent_inode; 3436bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le16 i_count; 3446bd2c4382316ecdcd918ce7499bccb03b5303db3plougher __le16 offset; 3459fca346e286002f3e0db6201923b538a740c78b4plougher __le32 xattr; 3461f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher struct squashfs_dir_index index[0]; 3471b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 3481f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 349ffd6024da956882433848ccf368da76116fa9241plougherunion squashfs_inode { 350ffd6024da956882433848ccf368da76116fa9241plougher struct squashfs_base_inode base; 351ffd6024da956882433848ccf368da76116fa9241plougher struct squashfs_dev_inode dev; 352ffd6024da956882433848ccf368da76116fa9241plougher struct squashfs_symlink_inode symlink; 353ffd6024da956882433848ccf368da76116fa9241plougher struct squashfs_reg_inode reg; 354ffd6024da956882433848ccf368da76116fa9241plougher struct squashfs_lreg_inode lreg; 355ffd6024da956882433848ccf368da76116fa9241plougher struct squashfs_dir_inode dir; 356ffd6024da956882433848ccf368da76116fa9241plougher struct squashfs_ldir_inode ldir; 357ffd6024da956882433848ccf368da76116fa9241plougher struct squashfs_ipc_inode ipc; 3581f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher}; 35969fd8a885cc67e2ee05d167b670afb1ae5a26568plougher 3601f413c84d736495fd61ff05ebe52c3a01a4d95c2plougherstruct squashfs_dir_entry { 361c481f34ba50d3826970100da1cea4885656e7235plougher __le16 offset; 362c481f34ba50d3826970100da1cea4885656e7235plougher __le16 inode_number; 363c481f34ba50d3826970100da1cea4885656e7235plougher __le16 type; 364c481f34ba50d3826970100da1cea4885656e7235plougher __le16 size; 3651f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher char name[0]; 3661b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 3671f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 3681f413c84d736495fd61ff05ebe52c3a01a4d95c2plougherstruct squashfs_dir_header { 369c481f34ba50d3826970100da1cea4885656e7235plougher __le32 count; 370c481f34ba50d3826970100da1cea4885656e7235plougher __le32 start_block; 371c481f34ba50d3826970100da1cea4885656e7235plougher __le32 inode_number; 3721b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 3731f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 3741f413c84d736495fd61ff05ebe52c3a01a4d95c2plougherstruct squashfs_fragment_entry { 3751c38aad2d135365c731b7c4e42a134c6f7bcdf82plougher __le64 start_block; 376a95f266564808636aa1b303e4a9c3fe73977710cplougher __le32 size; 3771c136c6499f3eaa176d460e6d0da474c16eb4385plougher unsigned int unused; 3781b899fc316f7eba7a31da12dc0c9b69ada441059plougher}; 3791f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher 3801f413c84d736495fd61ff05ebe52c3a01a4d95c2plougher#endif 381