| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Phillip Lougher | 1135 | 95.54% | 11 | 64.71% |
| Linus Torvalds | 30 | 2.53% | 1 | 5.88% |
| Gustavo A. R. Silva | 8 | 0.67% | 1 | 5.88% |
| Ajeet Yadav | 5 | 0.42% | 1 | 5.88% |
| Sean Nyekjaer | 4 | 0.34% | 1 | 5.88% |
| Sean Purcell | 4 | 0.34% | 1 | 5.88% |
| Thomas Gleixner | 2 | 0.17% | 1 | 5.88% |
| Total | 1188 | 17 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef SQUASHFS_FS #define SQUASHFS_FS /* * Squashfs * * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008 * Phillip Lougher <phillip@squashfs.org.uk> * * squashfs_fs.h */ #define SQUASHFS_CACHED_FRAGMENTS CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE #define SQUASHFS_MAJOR 4 #define SQUASHFS_MINOR 0 #define SQUASHFS_START 0 /* size of metadata (inode and directory) blocks */ #define SQUASHFS_METADATA_SIZE 8192 #define SQUASHFS_BLOCK_OFFSET 2 /* default size of block device I/O */ #ifdef CONFIG_SQUASHFS_4K_DEVBLK_SIZE #define SQUASHFS_DEVBLK_SIZE 4096 #else #define SQUASHFS_DEVBLK_SIZE 1024 #endif #define SQUASHFS_FILE_MAX_SIZE 1048576 #define SQUASHFS_FILE_MAX_LOG 20 /* Max length of filename (not 255) */ #define SQUASHFS_NAME_LEN 256 /* Max value for directory header count*/ #define SQUASHFS_DIR_COUNT 256 #define SQUASHFS_INVALID_FRAG (0xffffffffU) #define SQUASHFS_INVALID_XATTR (0xffffffffU) #define SQUASHFS_INVALID_BLK (-1LL) /* Filesystem flags */ #define SQUASHFS_NOI 0 #define SQUASHFS_NOD 1 #define SQUASHFS_NOF 3 #define SQUASHFS_NO_FRAG 4 #define SQUASHFS_ALWAYS_FRAG 5 #define SQUASHFS_DUPLICATE 6 #define SQUASHFS_EXPORT 7 #define SQUASHFS_COMP_OPT 10 #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_EXPORTABLE(flags) SQUASHFS_BIT(flags, \ SQUASHFS_EXPORT) #define SQUASHFS_COMP_OPTS(flags) SQUASHFS_BIT(flags, \ SQUASHFS_COMP_OPT) /* Inode types including extended types */ #define SQUASHFS_DIR_TYPE 1 #define SQUASHFS_REG_TYPE 2 #define SQUASHFS_SYMLINK_TYPE 3 #define SQUASHFS_BLKDEV_TYPE 4 #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 #define SQUASHFS_LSYMLINK_TYPE 10 #define SQUASHFS_LBLKDEV_TYPE 11 #define SQUASHFS_LCHRDEV_TYPE 12 #define SQUASHFS_LFIFO_TYPE 13 #define SQUASHFS_LSOCKET_TYPE 14 /* Max type value stored in directory entry */ #define SQUASHFS_MAX_DIR_TYPE 7 /* Xattr types */ #define SQUASHFS_XATTR_USER 0 #define SQUASHFS_XATTR_TRUSTED 1 #define SQUASHFS_XATTR_SECURITY 2 #define SQUASHFS_XATTR_VALUE_OOL 256 #define SQUASHFS_XATTR_PREFIX_MASK 0xff /* 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) #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) #define SQUASHFS_COMPRESSED_BLOCK(B) (!((B) & SQUASHFS_COMPRESSED_BIT_BLOCK)) static inline int squashfs_block_size(__le32 raw) { u32 size = le32_to_cpu(raw); return (size >> 25) ? -EIO : size; } /* * 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) ((long long)(((long long) (A)\ << 16) + (B))) /* fragment and fragment table defines */ #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(u64)) /* inode lookup table defines */ #define SQUASHFS_LOOKUP_BYTES(A) ((A) * sizeof(u64)) #define SQUASHFS_LOOKUP_BLOCK(A) (SQUASHFS_LOOKUP_BYTES(A) / \ SQUASHFS_METADATA_SIZE) #define SQUASHFS_LOOKUP_BLOCK_OFFSET(A) (SQUASHFS_LOOKUP_BYTES(A) % \ SQUASHFS_METADATA_SIZE) #define SQUASHFS_LOOKUP_BLOCKS(A) ((SQUASHFS_LOOKUP_BYTES(A) + \ SQUASHFS_METADATA_SIZE - 1) / \ SQUASHFS_METADATA_SIZE) #define SQUASHFS_LOOKUP_BLOCK_BYTES(A) (SQUASHFS_LOOKUP_BLOCKS(A) *\ sizeof(u64)) /* uid/gid lookup table defines */ #define SQUASHFS_ID_BYTES(A) ((A) * sizeof(unsigned int)) #define SQUASHFS_ID_BLOCK(A) (SQUASHFS_ID_BYTES(A) / \ SQUASHFS_METADATA_SIZE) #define SQUASHFS_ID_BLOCK_OFFSET(A) (SQUASHFS_ID_BYTES(A) % \ SQUASHFS_METADATA_SIZE) #define SQUASHFS_ID_BLOCKS(A) ((SQUASHFS_ID_BYTES(A) + \ SQUASHFS_METADATA_SIZE - 1) / \ SQUASHFS_METADATA_SIZE) #define SQUASHFS_ID_BLOCK_BYTES(A) (SQUASHFS_ID_BLOCKS(A) *\ sizeof(u64)) /* xattr id lookup table defines */ #define SQUASHFS_XATTR_BYTES(A) (((u64) (A)) * sizeof(struct squashfs_xattr_id)) #define SQUASHFS_XATTR_BLOCK(A) (SQUASHFS_XATTR_BYTES(A) / \ SQUASHFS_METADATA_SIZE) #define SQUASHFS_XATTR_BLOCK_OFFSET(A) (SQUASHFS_XATTR_BYTES(A) % \ SQUASHFS_METADATA_SIZE) #define SQUASHFS_XATTR_BLOCKS(A) ((SQUASHFS_XATTR_BYTES(A) + \ SQUASHFS_METADATA_SIZE - 1) / \ SQUASHFS_METADATA_SIZE) #define SQUASHFS_XATTR_BLOCK_BYTES(A) (SQUASHFS_XATTR_BLOCKS(A) *\ sizeof(u64)) #define SQUASHFS_XATTR_BLK(A) ((unsigned int) ((A) >> 16)) #define SQUASHFS_XATTR_OFFSET(A) ((unsigned int) ((A) & 0xffff)) /* cached data constants for filesystem */ #define SQUASHFS_CACHED_BLKS 8 /* meta index cache */ #define SQUASHFS_META_INDEXES (SQUASHFS_METADATA_SIZE / sizeof(unsigned int)) #define SQUASHFS_META_ENTRIES 127 #define SQUASHFS_META_SLOTS 8 struct meta_entry { u64 data_block; unsigned int index_block; unsigned short offset; unsigned short pad; }; struct meta_index { unsigned int inode_number; unsigned int offset; unsigned short entries; unsigned short skip; unsigned short locked; unsigned short pad; struct meta_entry meta_entry[SQUASHFS_META_ENTRIES]; }; /* * definitions for structures on disk */ #define ZLIB_COMPRESSION 1 #define LZMA_COMPRESSION 2 #define LZO_COMPRESSION 3 #define XZ_COMPRESSION 4 #define LZ4_COMPRESSION 5 #define ZSTD_COMPRESSION 6 struct squashfs_super_block { __le32 s_magic; __le32 inodes; __le32 mkfs_time; __le32 block_size; __le32 fragments; __le16 compression; __le16 block_log; __le16 flags; __le16 no_ids; __le16 s_major; __le16 s_minor; __le64 root_inode; __le64 bytes_used; __le64 id_table_start; __le64 xattr_id_table_start; __le64 inode_table_start; __le64 directory_table_start; __le64 fragment_table_start; __le64 lookup_table_start; }; struct squashfs_dir_index { __le32 index; __le32 start_block; __le32 size; unsigned char name[]; }; struct squashfs_base_inode { __le16 inode_type; __le16 mode; __le16 uid; __le16 guid; __le32 mtime; __le32 inode_number; }; struct squashfs_ipc_inode { __le16 inode_type; __le16 mode; __le16 uid; __le16 guid; __le32 mtime; __le32 inode_number; __le32 nlink; }; struct squashfs_lipc_inode { __le16 inode_type; __le16 mode; __le16 uid; __le16 guid; __le32 mtime; __le32 inode_number; __le32 nlink; __le32 xattr; }; struct squashfs_dev_inode { __le16 inode_type; __le16 mode; __le16 uid; __le16 guid; __le32 mtime; __le32 inode_number; __le32 nlink; __le32 rdev; }; struct squashfs_ldev_inode { __le16 inode_type; __le16 mode; __le16 uid; __le16 guid; __le32 mtime; __le32 inode_number; __le32 nlink; __le32 rdev; __le32 xattr; }; struct squashfs_symlink_inode { __le16 inode_type; __le16 mode; __le16 uid; __le16 guid; __le32 mtime; __le32 inode_number; __le32 nlink; __le32 symlink_size; char symlink[]; }; struct squashfs_reg_inode { __le16 inode_type; __le16 mode; __le16 uid; __le16 guid; __le32 mtime; __le32 inode_number; __le32 start_block; __le32 fragment; __le32 offset; __le32 file_size; __le16 block_list[]; }; struct squashfs_lreg_inode { __le16 inode_type; __le16 mode; __le16 uid; __le16 guid; __le32 mtime; __le32 inode_number; __le64 start_block; __le64 file_size; __le64 sparse; __le32 nlink; __le32 fragment; __le32 offset; __le32 xattr; __le16 block_list[]; }; struct squashfs_dir_inode { __le16 inode_type; __le16 mode; __le16 uid; __le16 guid; __le32 mtime; __le32 inode_number; __le32 start_block; __le32 nlink; __le16 file_size; __le16 offset; __le32 parent_inode; }; struct squashfs_ldir_inode { __le16 inode_type; __le16 mode; __le16 uid; __le16 guid; __le32 mtime; __le32 inode_number; __le32 nlink; __le32 file_size; __le32 start_block; __le32 parent_inode; __le16 i_count; __le16 offset; __le32 xattr; struct squashfs_dir_index index[]; }; union squashfs_inode { struct squashfs_base_inode base; struct squashfs_dev_inode dev; struct squashfs_ldev_inode ldev; struct squashfs_symlink_inode symlink; struct squashfs_reg_inode reg; struct squashfs_lreg_inode lreg; struct squashfs_dir_inode dir; struct squashfs_ldir_inode ldir; struct squashfs_ipc_inode ipc; struct squashfs_lipc_inode lipc; }; struct squashfs_dir_entry { __le16 offset; __le16 inode_number; __le16 type; __le16 size; char name[]; }; struct squashfs_dir_header { __le32 count; __le32 start_block; __le32 inode_number; }; struct squashfs_fragment_entry { __le64 start_block; __le32 size; unsigned int unused; }; struct squashfs_xattr_entry { __le16 type; __le16 size; char data[]; }; struct squashfs_xattr_val { __le32 vsize; char value[]; }; struct squashfs_xattr_id { __le64 xattr; __le32 count; __le32 size; }; struct squashfs_xattr_id_table { __le64 xattr_table_start; __le32 xattr_ids; __le32 unused; }; #endif
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