-/* vi: set ts=4:
- *
- * mke2fs.h - Headers for ext2
+/* mke2fs.h - Headers for ext2
*
* Copyright 2006 Rob Landley <rob@landley.net>
*/
#define EXT2_SUPER_MAGIC 0xEF53
struct ext2_superblock {
- uint32_t inodes_count; // Inodes count
- uint32_t blocks_count; // Blocks count
- uint32_t r_blocks_count; // Reserved blocks count
- uint32_t free_blocks_count; // Free blocks count
- uint32_t free_inodes_count; // Free inodes count
- uint32_t first_data_block; // First Data Block
- uint32_t log_block_size; // Block size
- uint32_t log_frag_size; // Fragment size
- uint32_t blocks_per_group; // Blocks per group
- uint32_t frags_per_group; // Fragments per group
- uint32_t inodes_per_group; // Inodes per group
- uint32_t mtime; // Mount time
- uint32_t wtime; // Write time
- uint16_t mnt_count; // Mount count
- uint16_t max_mnt_count; // Maximal mount count
- uint16_t magic; // Magic signature
- uint16_t state; // File system state
- uint16_t errors; // Behaviour when detecting errors
- uint16_t minor_rev_level; // minor revision level
- uint32_t lastcheck; // time of last check
- uint32_t checkinterval; // max. time between checks
- uint32_t creator_os; // OS
- uint32_t rev_level; // Revision level
- uint16_t def_resuid; // Default uid for reserved blocks
- uint16_t def_resgid; // Default gid for reserved blocks
- uint32_t first_ino; // First non-reserved inode
- uint16_t inode_size; // size of inode structure
- uint16_t block_group_nr; // block group # of this superblock
- uint32_t feature_compat; // compatible feature set
- uint32_t feature_incompat; // incompatible feature set
- uint32_t feature_ro_compat; // readonly-compatible feature set
- char uuid[16]; // 128-bit uuid for volume
- char volume_name[16]; // volume name
- char last_mounted[64]; // directory where last mounted
- uint32_t alg_usage_bitmap; // For compression
- // For EXT2_COMPAT_PREALLOC
- uint8_t prealloc_blocks; // Nr of blocks to try to preallocate
- uint8_t prealloc_dir_blocks; //Nr to preallocate for dirs
- uint16_t padding1;
- // For EXT3_FEATURE_COMPAT_HAS_JOURNAL
- uint8_t journal_uuid[16]; // uuid of journal superblock
- uint32_t journal_inum; // inode number of journal file
- uint32_t journal_dev; // device number of journal file
- uint32_t last_orphan; // start of list of inodes to delete
- uint32_t hash_seed[4]; // HTREE hash seed
- uint8_t def_hash_version; // Default hash version to use
- uint8_t padding2[3];
- uint32_t default_mount_opts;
- uint32_t first_meta_bg; // First metablock block group
- uint32_t mkfs_time; // Creation timestamp
- uint32_t jnl_blocks[17]; // Backup of journal inode
- // uint32_t reserved[172]; // Padding to the end of the block
+ uint32_t inodes_count; // Inodes count
+ uint32_t blocks_count; // Blocks count
+ uint32_t r_blocks_count; // Reserved blocks count
+ uint32_t free_blocks_count; // Free blocks count
+ uint32_t free_inodes_count; // Free inodes count
+ uint32_t first_data_block; // First Data Block
+ uint32_t log_block_size; // Block size
+ uint32_t log_frag_size; // Fragment size
+ uint32_t blocks_per_group; // Blocks per group
+ uint32_t frags_per_group; // Fragments per group
+ uint32_t inodes_per_group; // Inodes per group
+ uint32_t mtime; // Mount time
+ uint32_t wtime; // Write time
+ uint16_t mnt_count; // Mount count
+ uint16_t max_mnt_count; // Maximal mount count
+ uint16_t magic; // Magic signature
+ uint16_t state; // File system state
+ uint16_t errors; // Behaviour when detecting errors
+ uint16_t minor_rev_level; // minor revision level
+ uint32_t lastcheck; // time of last check
+ uint32_t checkinterval; // max. time between checks
+ uint32_t creator_os; // OS
+ uint32_t rev_level; // Revision level
+ uint16_t def_resuid; // Default uid for reserved blocks
+ uint16_t def_resgid; // Default gid for reserved blocks
+ uint32_t first_ino; // First non-reserved inode
+ uint16_t inode_size; // size of inode structure
+ uint16_t block_group_nr; // block group # of this superblock
+ uint32_t feature_compat; // compatible feature set
+ uint32_t feature_incompat; // incompatible feature set
+ uint32_t feature_ro_compat; // readonly-compatible feature set
+ char uuid[16]; // 128-bit uuid for volume
+ char volume_name[16]; // volume name
+ char last_mounted[64]; // directory where last mounted
+ uint32_t alg_usage_bitmap; // For compression
+ // For EXT2_COMPAT_PREALLOC
+ uint8_t prealloc_blocks; // Nr of blocks to try to preallocate
+ uint8_t prealloc_dir_blocks; //Nr to preallocate for dirs
+ uint16_t padding1;
+ // For EXT3_FEATURE_COMPAT_HAS_JOURNAL
+ uint8_t journal_uuid[16]; // uuid of journal superblock
+ uint32_t journal_inum; // inode number of journal file
+ uint32_t journal_dev; // device number of journal file
+ uint32_t last_orphan; // start of list of inodes to delete
+ uint32_t hash_seed[4]; // HTREE hash seed
+ uint8_t def_hash_version; // Default hash version to use
+ uint8_t padding2[3];
+ uint32_t default_mount_opts;
+ uint32_t first_meta_bg; // First metablock block group
+ uint32_t mkfs_time; // Creation timestamp
+ uint32_t jnl_blocks[17]; // Backup of journal inode
+ // uint32_t reserved[172]; // Padding to the end of the block
};
struct ext2_group
{
- uint32_t block_bitmap; // Block number of block bitmap
- uint32_t inode_bitmap; // Block number of inode bitmap
- uint32_t inode_table; // Block number of inode table
- uint16_t free_blocks_count; // How many free blocks in this group?
- uint16_t free_inodes_count; // How many free inodes in this group?
- uint16_t used_dirs_count; // How many directories?
- uint16_t reserved[7]; // pad to 32 bytes
+ uint32_t block_bitmap; // Block number of block bitmap
+ uint32_t inode_bitmap; // Block number of inode bitmap
+ uint32_t inode_table; // Block number of inode table
+ uint16_t free_blocks_count; // How many free blocks in this group?
+ uint16_t free_inodes_count; // How many free inodes in this group?
+ uint16_t used_dirs_count; // How many directories?
+ uint16_t reserved[7]; // pad to 32 bytes
};
struct ext2_dentry {
- uint32_t inode; // Inode number
- uint16_t rec_len; // Directory entry length
- uint8_t name_len; // Name length
- uint8_t file_type;
- char name[0]; // File name
+ uint32_t inode; // Inode number
+ uint16_t rec_len; // Directory entry length
+ uint8_t name_len; // Name length
+ uint8_t file_type;
+ char name[0]; // File name
};
struct ext2_inode {
- uint16_t mode; // File mode
- uint16_t uid; // Low 16 bits of Owner Uid
- uint32_t size; // Size in bytes
- uint32_t atime; // Access time
- uint32_t ctime; // Creation time
- uint32_t mtime; // Modification time
- uint32_t dtime; // Deletion Time
- uint16_t gid; // Low 16 bits of Group Id
- uint16_t links_count; // Links count
- uint32_t blocks; // Blocks count
- uint32_t flags; // File flags
- uint32_t reserved1;
- uint32_t block[15]; // Pointers to blocks
- uint32_t generation; // File version (for NFS)
- uint32_t file_acl; // File ACL
- uint32_t dir_acl; // Directory ACL (or top bits of file length)
- uint32_t faddr; // Fragment address
- uint8_t frag; // Fragment number
- uint8_t fsize; // Fragment size
- uint16_t pad1;
- uint16_t uid_high; // High bits of uid
- uint16_t gid_high; // High bits of gid
- uint32_t reserved2;
+ uint16_t mode; // File mode
+ uint16_t uid; // Low 16 bits of Owner Uid
+ uint32_t size; // Size in bytes
+ uint32_t atime; // Access time
+ uint32_t ctime; // Creation time
+ uint32_t mtime; // Modification time
+ uint32_t dtime; // Deletion Time
+ uint16_t gid; // Low 16 bits of Group Id
+ uint16_t links_count; // Links count
+ uint32_t blocks; // Blocks count
+ uint32_t flags; // File flags
+ uint32_t reserved1;
+ uint32_t block[15]; // Pointers to blocks
+ uint32_t generation; // File version (for NFS)
+ uint32_t file_acl; // File ACL
+ uint32_t dir_acl; // Directory ACL (or top bits of file length)
+ uint32_t faddr; // Last block in file
+ uint8_t frag; // Fragment number
+ uint8_t fsize; // Fragment size
+ uint16_t pad1;
+ uint16_t uid_high; // High bits of uid
+ uint16_t gid_high; // High bits of gid
+ uint32_t reserved2;
};
#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001
// other bits are reserved for now.
enum {
- EXT2_FT_UNKNOWN,
- EXT2_FT_REG_FILE,
- EXT2_FT_DIR,
- EXT2_FT_CHRDEV,
- EXT2_FT_BLKDEV,
- EXT2_FT_FIFO,
- EXT2_FT_SOCK,
- EXT2_FT_SYMLINK,
- EXT2_FT_MAX
+ EXT2_FT_UNKNOWN,
+ EXT2_FT_REG_FILE,
+ EXT2_FT_DIR,
+ EXT2_FT_CHRDEV,
+ EXT2_FT_BLKDEV,
+ EXT2_FT_FIFO,
+ EXT2_FT_SOCK,
+ EXT2_FT_SYMLINK,
+ EXT2_FT_MAX
};
OSDN Git Service
