diff options
Diffstat (limited to 'usr/kinit/fstype/ext3_fs.h')
| -rw-r--r-- | usr/kinit/fstype/ext3_fs.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/usr/kinit/fstype/ext3_fs.h b/usr/kinit/fstype/ext3_fs.h new file mode 100644 index 0000000..f958e5c --- /dev/null +++ b/usr/kinit/fstype/ext3_fs.h @@ -0,0 +1,134 @@ +#ifndef __EXT3_FS_H +#define __EXT3_FS_H + +/* + * The second extended file system magic number + */ +#define EXT3_SUPER_MAGIC 0xEF53 + +#define EXT2_FLAGS_TEST_FILESYS 0x0004 +#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 +#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 +#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 +#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 +#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010 +#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 +#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 +#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 + +#define EXT3_FEATURE_INCOMPAT_EXTENTS 0x0040 +#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080 +#define EXT4_FEATURE_INCOMPAT_MMP 0x0100 + +#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ + EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ + EXT2_FEATURE_RO_COMPAT_BTREE_DIR) +#define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT3_FEATURE_RO_COMPAT_SUPP +#define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \ + EXT3_FEATURE_INCOMPAT_RECOVER| \ + EXT2_FEATURE_INCOMPAT_META_BG) +#define EXT3_FEATURE_INCOMPAT_UNSUPPORTED ~EXT3_FEATURE_INCOMPAT_SUPP + + + +/* + * Structure of the super block + */ +struct ext3_super_block { + /*00*/ __u32 s_inodes_count; + /* Inodes count */ + __u32 s_blocks_count; /* Blocks count */ + __u32 s_r_blocks_count; /* Reserved blocks count */ + __u32 s_free_blocks_count; /* Free blocks count */ + /*10*/ __u32 s_free_inodes_count; + /* Free inodes count */ + __u32 s_first_data_block; /* First Data Block */ + __u32 s_log_block_size; /* Block size */ + __s32 s_log_frag_size; /* Fragment size */ + /*20*/ __u32 s_blocks_per_group; + /* # Blocks per group */ + __u32 s_frags_per_group; /* # Fragments per group */ + __u32 s_inodes_per_group; /* # Inodes per group */ + __u32 s_mtime; /* Mount time */ + /*30*/ __u32 s_wtime; + /* Write time */ + __u16 s_mnt_count; /* Mount count */ + __s16 s_max_mnt_count; /* Maximal mount count */ + __u16 s_magic; /* Magic signature */ + __u16 s_state; /* File system state */ + __u16 s_errors; /* Behaviour when detecting errors */ + __u16 s_minor_rev_level; /* minor revision level */ + /*40*/ __u32 s_lastcheck; + /* time of last check */ + __u32 s_checkinterval; /* max. time between checks */ + __u32 s_creator_os; /* OS */ + __u32 s_rev_level; /* Revision level */ + /*50*/ __u16 s_def_resuid; + /* Default uid for reserved blocks */ + __u16 s_def_resgid; /* Default gid for reserved blocks */ + /* + * These fields are for EXT3_DYNAMIC_REV superblocks only. + * + * Note: the difference between the compatible feature set and + * the incompatible feature set is that if there is a bit set + * in the incompatible feature set that the kernel doesn't + * know about, it should refuse to mount the filesystem. + * + * e2fsck's requirements are more strict; if it doesn't know + * about a feature in either the compatible or incompatible + * feature set, it must abort and not try to meddle with + * things it doesn't understand... + */ + __u32 s_first_ino; /* First non-reserved inode */ + __u16 s_inode_size; /* size of inode structure */ + __u16 s_block_group_nr; /* block group # of this superblock */ + __u32 s_feature_compat; /* compatible feature set */ + /*60*/ __u32 s_feature_incompat; + /* incompatible feature set */ + __u32 s_feature_ro_compat; /* readonly-compatible feature set */ + /*68*/ __u8 s_uuid[16]; + /* 128-bit uuid for volume */ + /*78*/ char s_volume_name[16]; + /* volume name */ + /*88*/ char s_last_mounted[64]; + /* directory where last mounted */ + /*C8*/ __u32 s_algorithm_usage_bitmap; + /* For compression */ + /* + * Performance hints. Directory preallocation should only + * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on. + */ + __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate */ + __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ + __u16 s_padding1; + /* + * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set. + */ + /*D0*/ __u8 s_journal_uuid[16]; + /* uuid of journal superblock */ + /*E0*/ __u32 s_journal_inum; + /* inode number of journal file */ + __u32 s_journal_dev; /* device number of journal file */ + __u32 s_last_orphan; /* start of list of inodes to delete */ + __u32 s_hash_seed[4]; /* HTREE hash seed */ + __u8 s_def_hash_version; /* Default hash version to use */ + __u8 s_jnl_backup_type; + __u16 s_reserved_word_pad; + __u32 s_default_mount_opts; + __u32 s_first_meta_bg; + __u32 s_mkfs_time; + __u32 s_jnl_blocks[17]; + __u32 s_blocks_count_hi; + __u32 s_r_blocks_count_hi; + __u32 s_free_blocks_hi; + __u16 s_min_extra_isize; + __u16 s_want_extra_isize; + __u32 s_flags; + __u16 s_raid_stride; + __u16 s_mmp_interval; + __u64 s_mmp_block; + __u32 s_raid_stripe_width; + __u32 s_reserved[163]; +}; + +#endif /* __EXT3_FS_H */ |