Contents of /trunk/mkinitrd-magellan/klibc/usr/kinit/fstype/ext2_fs.h
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Fri Apr 24 18:32:46 2009 UTC (15 years ago) by niro
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Fri Apr 24 18:32:46 2009 UTC (15 years ago) by niro
File MIME type: text/plain
File size: 3406 byte(s)
-updated to klibc-1.5.15
1 | #ifndef __EXT2_FS_H |
2 | #define __EXT2_FS_H |
3 | |
4 | /* |
5 | * The second extended file system magic number |
6 | */ |
7 | #define EXT2_SUPER_MAGIC 0xEF53 |
8 | |
9 | /* |
10 | * Structure of the super block |
11 | */ |
12 | struct ext2_super_block { |
13 | __le32 s_inodes_count; /* Inodes count */ |
14 | __le32 s_blocks_count; /* Blocks count */ |
15 | __le32 s_r_blocks_count; /* Reserved blocks count */ |
16 | __le32 s_free_blocks_count; /* Free blocks count */ |
17 | __le32 s_free_inodes_count; /* Free inodes count */ |
18 | __le32 s_first_data_block; /* First Data Block */ |
19 | __le32 s_log_block_size; /* Block size */ |
20 | __le32 s_log_frag_size; /* Fragment size */ |
21 | __le32 s_blocks_per_group; /* # Blocks per group */ |
22 | __le32 s_frags_per_group; /* # Fragments per group */ |
23 | __le32 s_inodes_per_group; /* # Inodes per group */ |
24 | __le32 s_mtime; /* Mount time */ |
25 | __le32 s_wtime; /* Write time */ |
26 | __le16 s_mnt_count; /* Mount count */ |
27 | __le16 s_max_mnt_count; /* Maximal mount count */ |
28 | __le16 s_magic; /* Magic signature */ |
29 | __le16 s_state; /* File system state */ |
30 | __le16 s_errors; /* Behaviour when detecting errors */ |
31 | __le16 s_minor_rev_level; /* minor revision level */ |
32 | __le32 s_lastcheck; /* time of last check */ |
33 | __le32 s_checkinterval; /* max. time between checks */ |
34 | __le32 s_creator_os; /* OS */ |
35 | __le32 s_rev_level; /* Revision level */ |
36 | __le16 s_def_resuid; /* Default uid for reserved blocks */ |
37 | __le16 s_def_resgid; /* Default gid for reserved blocks */ |
38 | /* |
39 | * These fields are for EXT2_DYNAMIC_REV superblocks only. |
40 | * |
41 | * Note: the difference between the compatible feature set and |
42 | * the incompatible feature set is that if there is a bit set |
43 | * in the incompatible feature set that the kernel doesn't |
44 | * know about, it should refuse to mount the filesystem. |
45 | * |
46 | * e2fsck's requirements are more strict; if it doesn't know |
47 | * about a feature in either the compatible or incompatible |
48 | * feature set, it must abort and not try to meddle with |
49 | * things it doesn't understand... |
50 | */ |
51 | __le32 s_first_ino; /* First non-reserved inode */ |
52 | __le16 s_inode_size; /* size of inode structure */ |
53 | __le16 s_block_group_nr; /* block group # of this superblock */ |
54 | __le32 s_feature_compat; /* compatible feature set */ |
55 | __le32 s_feature_incompat; /* incompatible feature set */ |
56 | __le32 s_feature_ro_compat; /* readonly-compatible feature set */ |
57 | __u8 s_uuid[16]; /* 128-bit uuid for volume */ |
58 | char s_volume_name[16]; /* volume name */ |
59 | char s_last_mounted[64]; /* directory where last mounted */ |
60 | __le32 s_algorithm_usage_bitmap; /* For compression */ |
61 | /* |
62 | * Performance hints. Directory preallocation should only |
63 | * happen if the EXT2_COMPAT_PREALLOC flag is on. |
64 | */ |
65 | __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate */ |
66 | __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ |
67 | __u16 s_padding1; |
68 | /* |
69 | * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set. |
70 | */ |
71 | __u8 s_journal_uuid[16]; /* uuid of journal superblock */ |
72 | __u32 s_journal_inum; /* inode number of journal file */ |
73 | __u32 s_journal_dev; /* device number of journal file */ |
74 | __u32 s_last_orphan; /* start of list of inodes to delete */ |
75 | __u32 s_hash_seed[4]; /* HTREE hash seed */ |
76 | __u8 s_def_hash_version; /* Default hash version to use */ |
77 | __u8 s_reserved_char_pad; |
78 | __u16 s_reserved_word_pad; |
79 | __le32 s_default_mount_opts; |
80 | __le32 s_first_meta_bg; /* First metablock block group */ |
81 | __u32 s_reserved[190]; /* Padding to the end of the block */ |
82 | }; |
83 | |
84 | #endif /* __EXT2_FS_H */ |