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    Contents of /trunk/mkinitrd-magellan/klibc/usr/kinit/fstype/ext3_fs.h

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    Revision 815 - (show annotations) (download)
    Fri Apr 24 18:32:46 2009 UTC (15 years ago) by niro
    File MIME type: text/plain
    File size: 4982 byte(s) 
    -updated to klibc-1.5.15
    1 #ifndef __EXT3_FS_H
    2 #define __EXT3_FS_H
    3
    4 /*
    5 * The second extended file system magic number
    6 */
    7 #define EXT3_SUPER_MAGIC 0xEF53
    8
    9 #define EXT2_FLAGS_TEST_FILESYS 0x0004
    10 #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
    11 #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
    12 #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
    13 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
    14 #define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
    15 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
    16 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
    17 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
    18
    19 #define EXT3_FEATURE_INCOMPAT_EXTENTS 0x0040
    20 #define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
    21 #define EXT4_FEATURE_INCOMPAT_MMP 0x0100
    22
    23 #define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
    24 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
    25 EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
    26 #define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT3_FEATURE_RO_COMPAT_SUPP
    27 #define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
    28 EXT3_FEATURE_INCOMPAT_RECOVER| \
    29 EXT2_FEATURE_INCOMPAT_META_BG)
    30 #define EXT3_FEATURE_INCOMPAT_UNSUPPORTED ~EXT3_FEATURE_INCOMPAT_SUPP
    31
    32
    33
    34 /*
    35 * Structure of the super block
    36 */
    37 struct ext3_super_block {
    38 /*00*/ __u32 s_inodes_count;
    39 /* Inodes count */
    40 __u32 s_blocks_count; /* Blocks count */
    41 __u32 s_r_blocks_count; /* Reserved blocks count */
    42 __u32 s_free_blocks_count; /* Free blocks count */
    43 /*10*/ __u32 s_free_inodes_count;
    44 /* Free inodes count */
    45 __u32 s_first_data_block; /* First Data Block */
    46 __u32 s_log_block_size; /* Block size */
    47 __s32 s_log_frag_size; /* Fragment size */
    48 /*20*/ __u32 s_blocks_per_group;
    49 /* # Blocks per group */
    50 __u32 s_frags_per_group; /* # Fragments per group */
    51 __u32 s_inodes_per_group; /* # Inodes per group */
    52 __u32 s_mtime; /* Mount time */
    53 /*30*/ __u32 s_wtime;
    54 /* Write time */
    55 __u16 s_mnt_count; /* Mount count */
    56 __s16 s_max_mnt_count; /* Maximal mount count */
    57 __u16 s_magic; /* Magic signature */
    58 __u16 s_state; /* File system state */
    59 __u16 s_errors; /* Behaviour when detecting errors */
    60 __u16 s_minor_rev_level; /* minor revision level */
    61 /*40*/ __u32 s_lastcheck;
    62 /* time of last check */
    63 __u32 s_checkinterval; /* max. time between checks */
    64 __u32 s_creator_os; /* OS */
    65 __u32 s_rev_level; /* Revision level */
    66 /*50*/ __u16 s_def_resuid;
    67 /* Default uid for reserved blocks */
    68 __u16 s_def_resgid; /* Default gid for reserved blocks */
    69 /*
    70 * These fields are for EXT3_DYNAMIC_REV superblocks only.
    71 *
    72 * Note: the difference between the compatible feature set and
    73 * the incompatible feature set is that if there is a bit set
    74 * in the incompatible feature set that the kernel doesn't
    75 * know about, it should refuse to mount the filesystem.
    76 *
    77 * e2fsck's requirements are more strict; if it doesn't know
    78 * about a feature in either the compatible or incompatible
    79 * feature set, it must abort and not try to meddle with
    80 * things it doesn't understand...
    81 */
    82 __u32 s_first_ino; /* First non-reserved inode */
    83 __u16 s_inode_size; /* size of inode structure */
    84 __u16 s_block_group_nr; /* block group # of this superblock */
    85 __u32 s_feature_compat; /* compatible feature set */
    86 /*60*/ __u32 s_feature_incompat;
    87 /* incompatible feature set */
    88 __u32 s_feature_ro_compat; /* readonly-compatible feature set */
    89 /*68*/ __u8 s_uuid[16];
    90 /* 128-bit uuid for volume */
    91 /*78*/ char s_volume_name[16];
    92 /* volume name */
    93 /*88*/ char s_last_mounted[64];
    94 /* directory where last mounted */
    95 /*C8*/ __u32 s_algorithm_usage_bitmap;
    96 /* For compression */
    97 /*
    98 * Performance hints. Directory preallocation should only
    99 * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on.
    100 */
    101 __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate */
    102 __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
    103 __u16 s_padding1;
    104 /*
    105 * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set.
    106 */
    107 /*D0*/ __u8 s_journal_uuid[16];
    108 /* uuid of journal superblock */
    109 /*E0*/ __u32 s_journal_inum;
    110 /* inode number of journal file */
    111 __u32 s_journal_dev; /* device number of journal file */
    112 __u32 s_last_orphan; /* start of list of inodes to delete */
    113 __u32 s_hash_seed[4]; /* HTREE hash seed */
    114 __u8 s_def_hash_version; /* Default hash version to use */
    115 __u8 s_jnl_backup_type;
    116 __u16 s_reserved_word_pad;
    117 __u32 s_default_mount_opts;
    118 __u32 s_first_meta_bg;
    119 __u32 s_mkfs_time;
    120 __u32 s_jnl_blocks[17];
    121 __u32 s_blocks_count_hi;
    122 __u32 s_r_blocks_count_hi;
    123 __u32 s_free_blocks_hi;
    124 __u16 s_min_extra_isize;
    125 __u16 s_want_extra_isize;
    126 __u32 s_flags;
    127 __u16 s_raid_stride;
    128 __u16 s_mmp_interval;
    129 __u64 s_mmp_block;
    130 __u32 s_raid_stripe_width;
    131 __u32 s_reserved[163];
    132 };
    133
    134 #endif /* __EXT3_FS_H */