mirror of https://github.com/ventoy/Ventoy.git
835 lines
26 KiB
C
835 lines
26 KiB
C
#ifndef SQUASHFS_COMPAT
|
|
#define SQUASHFS_COMPAT
|
|
/*
|
|
* Squashfs
|
|
*
|
|
* Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2014, 2019
|
|
* Phillip Lougher <phillip@squashfs.org.uk>
|
|
*
|
|
* 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.
|
|
*
|
|
* squashfs_compat.h
|
|
*/
|
|
|
|
/*
|
|
* definitions for structures on disk - layout 3.x
|
|
*/
|
|
|
|
#define SQUASHFS_CHECK 2
|
|
#define SQUASHFS_CHECK_DATA(flags) SQUASHFS_BIT(flags, \
|
|
SQUASHFS_CHECK)
|
|
|
|
/* Max number of uids and gids */
|
|
#define SQUASHFS_UIDS 256
|
|
#define SQUASHFS_GUIDS 255
|
|
|
|
struct squashfs_super_block_3 {
|
|
unsigned int s_magic;
|
|
unsigned int inodes;
|
|
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;
|
|
unsigned int block_log:16;
|
|
unsigned int flags:8;
|
|
unsigned int no_uids:8;
|
|
unsigned int no_guids:8;
|
|
int mkfs_time /* time of filesystem creation */;
|
|
squashfs_inode root_inode;
|
|
unsigned int block_size;
|
|
unsigned int fragments;
|
|
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 lookup_table_start;
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_dir_index_3 {
|
|
unsigned int index;
|
|
unsigned int start_block;
|
|
unsigned char size;
|
|
unsigned char name[0];
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_base_inode_header_3 {
|
|
unsigned int inode_type:4;
|
|
unsigned int mode:12;
|
|
unsigned int uid:8;
|
|
unsigned int guid:8;
|
|
int mtime;
|
|
unsigned int inode_number;
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_ipc_inode_header_3 {
|
|
unsigned int inode_type:4;
|
|
unsigned int mode:12;
|
|
unsigned int uid:8;
|
|
unsigned int guid:8;
|
|
int mtime;
|
|
unsigned int inode_number;
|
|
unsigned int nlink;
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_dev_inode_header_3 {
|
|
unsigned int inode_type:4;
|
|
unsigned int mode:12;
|
|
unsigned int uid:8;
|
|
unsigned int guid:8;
|
|
int mtime;
|
|
unsigned int inode_number;
|
|
unsigned int nlink;
|
|
unsigned short rdev;
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_symlink_inode_header_3 {
|
|
unsigned int inode_type:4;
|
|
unsigned int mode:12;
|
|
unsigned int uid:8;
|
|
unsigned int guid:8;
|
|
int mtime;
|
|
unsigned int inode_number;
|
|
unsigned int nlink;
|
|
unsigned short symlink_size;
|
|
char symlink[0];
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_reg_inode_header_3 {
|
|
unsigned int inode_type:4;
|
|
unsigned int mode:12;
|
|
unsigned int uid:8;
|
|
unsigned int guid:8;
|
|
int mtime;
|
|
unsigned int inode_number;
|
|
squashfs_block start_block;
|
|
unsigned int fragment;
|
|
unsigned int offset;
|
|
unsigned int file_size;
|
|
unsigned short block_list[0];
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_lreg_inode_header_3 {
|
|
unsigned int inode_type:4;
|
|
unsigned int mode:12;
|
|
unsigned int uid:8;
|
|
unsigned int guid:8;
|
|
int mtime;
|
|
unsigned int inode_number;
|
|
unsigned int nlink;
|
|
squashfs_block start_block;
|
|
unsigned int fragment;
|
|
unsigned int offset;
|
|
long long file_size;
|
|
unsigned short block_list[0];
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_dir_inode_header_3 {
|
|
unsigned int inode_type:4;
|
|
unsigned int mode:12;
|
|
unsigned int uid:8;
|
|
unsigned int guid:8;
|
|
int mtime;
|
|
unsigned int inode_number;
|
|
unsigned int nlink;
|
|
unsigned int file_size:19;
|
|
unsigned int offset:13;
|
|
unsigned int start_block;
|
|
unsigned int parent_inode;
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_ldir_inode_header_3 {
|
|
unsigned int inode_type:4;
|
|
unsigned int mode:12;
|
|
unsigned int uid:8;
|
|
unsigned int guid:8;
|
|
int mtime;
|
|
unsigned int inode_number;
|
|
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_3 index[0];
|
|
} __attribute__ ((packed));
|
|
|
|
union squashfs_inode_header_3 {
|
|
struct squashfs_base_inode_header_3 base;
|
|
struct squashfs_dev_inode_header_3 dev;
|
|
struct squashfs_symlink_inode_header_3 symlink;
|
|
struct squashfs_reg_inode_header_3 reg;
|
|
struct squashfs_lreg_inode_header_3 lreg;
|
|
struct squashfs_dir_inode_header_3 dir;
|
|
struct squashfs_ldir_inode_header_3 ldir;
|
|
struct squashfs_ipc_inode_header_3 ipc;
|
|
};
|
|
|
|
struct squashfs_dir_entry_3 {
|
|
unsigned int offset:13;
|
|
unsigned int type:3;
|
|
unsigned int size:8;
|
|
int inode_number:16;
|
|
char name[0];
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_dir_header_3 {
|
|
unsigned int count:8;
|
|
unsigned int start_block;
|
|
unsigned int inode_number;
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_fragment_entry_3 {
|
|
long long start_block;
|
|
unsigned int size;
|
|
unsigned int pending;
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
typedef struct squashfs_super_block_3 squashfs_super_block_3;
|
|
typedef struct squashfs_dir_index_3 squashfs_dir_index_3;
|
|
typedef struct squashfs_base_inode_header_3 squashfs_base_inode_header_3;
|
|
typedef struct squashfs_ipc_inode_header_3 squashfs_ipc_inode_header_3;
|
|
typedef struct squashfs_dev_inode_header_3 squashfs_dev_inode_header_3;
|
|
typedef struct squashfs_symlink_inode_header_3 squashfs_symlink_inode_header_3;
|
|
typedef struct squashfs_reg_inode_header_3 squashfs_reg_inode_header_3;
|
|
typedef struct squashfs_lreg_inode_header_3 squashfs_lreg_inode_header_3;
|
|
typedef struct squashfs_dir_inode_header_3 squashfs_dir_inode_header_3;
|
|
typedef struct squashfs_ldir_inode_header_3 squashfs_ldir_inode_header_3;
|
|
typedef struct squashfs_dir_entry_3 squashfs_dir_entry_3;
|
|
typedef struct squashfs_dir_header_3 squashfs_dir_header_3;
|
|
typedef struct squashfs_fragment_entry_3 squashfs_fragment_entry_3;
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#define SQUASHFS_SWAP_START \
|
|
int bits;\
|
|
int b_pos;\
|
|
unsigned long long val;\
|
|
unsigned char *s;\
|
|
unsigned char *d;
|
|
|
|
#define SQUASHFS_SWAP_SUPER_BLOCK_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_super_block_3));\
|
|
SQUASHFS_SWAP((s)->s_magic, d, 0, 32);\
|
|
SQUASHFS_SWAP((s)->inodes, d, 32, 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);\
|
|
SQUASHFS_SWAP((s)->block_log, d, 272, 16);\
|
|
SQUASHFS_SWAP((s)->flags, d, 288, 8);\
|
|
SQUASHFS_SWAP((s)->no_uids, d, 296, 8);\
|
|
SQUASHFS_SWAP((s)->no_guids, d, 304, 8);\
|
|
SQUASHFS_SWAP((s)->mkfs_time, d, 312, 32);\
|
|
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_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)->lookup_table_start, d, 888, 64);\
|
|
}
|
|
|
|
#define SQUASHFS_SWAP_BASE_INODE_CORE_3(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_3(s, d, n) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_SWAP_BASE_INODE_CORE_3(s, d, n)\
|
|
}
|
|
|
|
#define SQUASHFS_SWAP_IPC_INODE_HEADER_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_SWAP_BASE_INODE_CORE_3(s, d, \
|
|
sizeof(struct squashfs_ipc_inode_header_3))\
|
|
SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
|
|
}
|
|
|
|
#define SQUASHFS_SWAP_DEV_INODE_HEADER_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_SWAP_BASE_INODE_CORE_3(s, d, \
|
|
sizeof(struct squashfs_dev_inode_header_3)); \
|
|
SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
|
|
SQUASHFS_SWAP((s)->rdev, d, 128, 16);\
|
|
}
|
|
|
|
#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_SWAP_BASE_INODE_CORE_3(s, d, \
|
|
sizeof(struct squashfs_symlink_inode_header_3));\
|
|
SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
|
|
SQUASHFS_SWAP((s)->symlink_size, d, 128, 16);\
|
|
}
|
|
|
|
#define SQUASHFS_SWAP_REG_INODE_HEADER_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_SWAP_BASE_INODE_CORE_3(s, d, \
|
|
sizeof(struct squashfs_reg_inode_header_3));\
|
|
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_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_SWAP_BASE_INODE_CORE_3(s, d, \
|
|
sizeof(struct squashfs_lreg_inode_header_3));\
|
|
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_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_SWAP_BASE_INODE_CORE_3(s, d, \
|
|
sizeof(struct squashfs_dir_inode_header_3));\
|
|
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_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_SWAP_BASE_INODE_CORE_3(s, d, \
|
|
sizeof(struct squashfs_ldir_inode_header_3));\
|
|
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_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index_3));\
|
|
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_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header_3));\
|
|
SQUASHFS_SWAP((s)->count, d, 0, 8);\
|
|
SQUASHFS_SWAP((s)->start_block, d, 8, 32);\
|
|
SQUASHFS_SWAP((s)->inode_number, d, 40, 32);\
|
|
}
|
|
|
|
#define SQUASHFS_SWAP_DIR_ENTRY_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry_3));\
|
|
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_INODE_T_3(s, d) SQUASHFS_SWAP_LONG_LONGS_3(s, d, 1)
|
|
|
|
#define SQUASHFS_SWAP_SHORTS_3(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)\
|
|
SQUASHFS_SWAP(s[entry], d, bit_position, 16);\
|
|
}
|
|
|
|
#define SQUASHFS_SWAP_INTS_3(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)\
|
|
SQUASHFS_SWAP(s[entry], d, bit_position, 32);\
|
|
}
|
|
|
|
#define SQUASHFS_SWAP_LONG_LONGS_3(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)\
|
|
SQUASHFS_SWAP(s[entry], d, bit_position, bits);\
|
|
}
|
|
|
|
#define SQUASHFS_SWAP_FRAGMENT_INDEXES_3(s, d, n) SQUASHFS_SWAP_LONG_LONGS_3(s, d, n)
|
|
#define SQUASHFS_SWAP_LOOKUP_BLOCKS_3(s, d, n) SQUASHFS_SWAP_LONG_LONGS_3(s, d, n)
|
|
|
|
#define SQUASHFS_SWAP_FRAGMENT_ENTRY_3(s, d) {\
|
|
SQUASHFS_SWAP_START\
|
|
SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry_3));\
|
|
SQUASHFS_SWAP((s)->start_block, d, 0, 64);\
|
|
SQUASHFS_SWAP((s)->size, d, 64, 32);\
|
|
}
|
|
|
|
/* fragment and fragment table defines */
|
|
#define SQUASHFS_FRAGMENT_BYTES_3(A) ((A) * sizeof(struct squashfs_fragment_entry_3))
|
|
|
|
#define SQUASHFS_FRAGMENT_INDEX_3(A) (SQUASHFS_FRAGMENT_BYTES_3(A) / \
|
|
SQUASHFS_METADATA_SIZE)
|
|
|
|
#define SQUASHFS_FRAGMENT_INDEX_OFFSET_3(A) (SQUASHFS_FRAGMENT_BYTES_3(A) % \
|
|
SQUASHFS_METADATA_SIZE)
|
|
|
|
#define SQUASHFS_FRAGMENT_INDEXES_3(A) ((SQUASHFS_FRAGMENT_BYTES_3(A) + \
|
|
SQUASHFS_METADATA_SIZE - 1) / \
|
|
SQUASHFS_METADATA_SIZE)
|
|
|
|
#define SQUASHFS_FRAGMENT_INDEX_BYTES_3(A) (SQUASHFS_FRAGMENT_INDEXES_3(A) *\
|
|
sizeof(long long))
|
|
|
|
/* inode lookup table defines */
|
|
#define SQUASHFS_LOOKUP_BYTES_3(A) ((A) * sizeof(squashfs_inode))
|
|
|
|
#define SQUASHFS_LOOKUP_BLOCK_3(A) (SQUASHFS_LOOKUP_BYTES_3(A) / \
|
|
SQUASHFS_METADATA_SIZE)
|
|
|
|
#define SQUASHFS_LOOKUP_BLOCK_OFFSET_3(A) (SQUASHFS_LOOKUP_BYTES_3(A) % \
|
|
SQUASHFS_METADATA_SIZE)
|
|
|
|
#define SQUASHFS_LOOKUP_BLOCKS_3(A) ((SQUASHFS_LOOKUP_BYTES_3(A) + \
|
|
SQUASHFS_METADATA_SIZE - 1) / \
|
|
SQUASHFS_METADATA_SIZE)
|
|
|
|
#define SQUASHFS_LOOKUP_BLOCK_BYTES_3(A) (SQUASHFS_LOOKUP_BLOCKS(A) *\
|
|
sizeof(long long))
|
|
|
|
/*
|
|
* definitions for structures on disk - layout 1.x
|
|
*/
|
|
#define SQUASHFS_TYPES 5
|
|
#define SQUASHFS_IPC_TYPE 0
|
|
|
|
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));
|
|
|
|
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));
|
|
|
|
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));
|
|
|
|
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));
|
|
|
|
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 */
|
|
int mtime;
|
|
unsigned int start_block;
|
|
unsigned int file_size:32;
|
|
unsigned short block_list[0];
|
|
} __attribute__ ((packed));
|
|
|
|
struct squashfs_dir_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 file_size:19;
|
|
unsigned int offset:13;
|
|
int mtime;
|
|
unsigned int start_block:24;
|
|
} __attribute__ ((packed));
|
|
|
|
union squashfs_inode_header_1 {
|
|
struct squashfs_base_inode_header_1 base;
|
|
struct squashfs_dev_inode_header_1 dev;
|
|
struct squashfs_symlink_inode_header_1 symlink;
|
|
struct squashfs_reg_inode_header_1 reg;
|
|
struct squashfs_dir_inode_header_1 dir;
|
|
struct squashfs_ipc_inode_header_1 ipc;
|
|
};
|
|
|
|
typedef struct squashfs_dir_index_1 squashfs_dir_index_1;
|
|
typedef struct squashfs_base_inode_header_1 squashfs_base_inode_header_1;
|
|
typedef struct squashfs_ipc_inode_header_1 squashfs_ipc_inode_header_1;
|
|
typedef struct squashfs_dev_inode_header_1 squashfs_dev_inode_header_1;
|
|
typedef struct squashfs_symlink_inode_header_1 squashfs_symlink_inode_header_1;
|
|
typedef struct squashfs_reg_inode_header_1 squashfs_reg_inode_header_1;
|
|
typedef struct squashfs_dir_inode_header_1 squashfs_dir_inode_header_1;
|
|
|
|
#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);
|
|
|
|
#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_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_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_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_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, 32);\
|
|
}
|
|
|
|
#define SQUASHFS_SWAP_DIR_INODE_HEADER_1(s, d) {\
|
|
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);\
|
|
}
|
|
|
|
/*
|
|
* definitions for structures on disk - layout 2.x
|
|
*/
|
|
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 */
|
|
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;
|
|
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;
|
|
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));
|
|
|
|
typedef struct squashfs_dir_index_2 squashfs_dir_index_2;
|
|
typedef struct squashfs_base_inode_header_2 squashfs_base_inode_header_2;
|
|
typedef struct squashfs_ipc_inode_header_2 squashfs_ipc_inode_header_2;
|
|
typedef struct squashfs_dev_inode_header_2 squashfs_dev_inode_header_2;
|
|
typedef struct squashfs_symlink_inode_header_2 squashfs_symlink_inode_header_2;
|
|
typedef struct squashfs_reg_inode_header_2 squashfs_reg_inode_header_2;
|
|
typedef struct squashfs_lreg_inode_header_2 squashfs_lreg_inode_header_2;
|
|
typedef struct squashfs_dir_inode_header_2 squashfs_dir_inode_header_2;
|
|
typedef struct squashfs_ldir_inode_header_2 squashfs_ldir_inode_header_2;
|
|
typedef struct squashfs_dir_entry_2 squashfs_dir_entry_2;
|
|
typedef struct squashfs_dir_header_2 squashfs_dir_header_2;
|
|
typedef struct squashfs_fragment_entry_2 squashfs_fragment_entry_2;
|
|
|
|
#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, 32);\
|
|
}
|
|
|
|
#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_3(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))
|
|
/*
|
|
* macros used to swap each structure entry, taking into account
|
|
* bitfields and different bitfield placing conventions on differing architectures
|
|
*/
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
/* convert from little endian to big endian */
|
|
#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)
|
|
#endif
|
|
|
|
#define _SQUASHFS_SWAP(value, p, pos, tbits, SHIFT) {\
|
|
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));\
|
|
}
|
|
#define SQUASHFS_MEMSET(s, d, n) memset(s, 0, n);
|
|
#endif
|