diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/efs_fs_sb.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/linux/efs_fs_sb.h')
-rw-r--r-- | include/linux/efs_fs_sb.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/include/linux/efs_fs_sb.h b/include/linux/efs_fs_sb.h new file mode 100644 index 000000000000..c76088baef28 --- /dev/null +++ b/include/linux/efs_fs_sb.h | |||
@@ -0,0 +1,62 @@ | |||
1 | /* | ||
2 | * efs_fs_sb.h | ||
3 | * | ||
4 | * Copyright (c) 1999 Al Smith | ||
5 | * | ||
6 | * Portions derived from IRIX header files (c) 1988 Silicon Graphics | ||
7 | */ | ||
8 | |||
9 | #ifndef __EFS_FS_SB_H__ | ||
10 | #define __EFS_FS_SB_H__ | ||
11 | |||
12 | /* statfs() magic number for EFS */ | ||
13 | #define EFS_SUPER_MAGIC 0x414A53 | ||
14 | |||
15 | /* EFS superblock magic numbers */ | ||
16 | #define EFS_MAGIC 0x072959 | ||
17 | #define EFS_NEWMAGIC 0x07295a | ||
18 | |||
19 | #define IS_EFS_MAGIC(x) ((x == EFS_MAGIC) || (x == EFS_NEWMAGIC)) | ||
20 | |||
21 | #define EFS_SUPER 1 | ||
22 | #define EFS_ROOTINODE 2 | ||
23 | |||
24 | /* efs superblock on disk */ | ||
25 | struct efs_super { | ||
26 | __be32 fs_size; /* size of filesystem, in sectors */ | ||
27 | __be32 fs_firstcg; /* bb offset to first cg */ | ||
28 | __be32 fs_cgfsize; /* size of cylinder group in bb's */ | ||
29 | __be16 fs_cgisize; /* bb's of inodes per cylinder group */ | ||
30 | __be16 fs_sectors; /* sectors per track */ | ||
31 | __be16 fs_heads; /* heads per cylinder */ | ||
32 | __be16 fs_ncg; /* # of cylinder groups in filesystem */ | ||
33 | __be16 fs_dirty; /* fs needs to be fsck'd */ | ||
34 | __be32 fs_time; /* last super-block update */ | ||
35 | __be32 fs_magic; /* magic number */ | ||
36 | char fs_fname[6]; /* file system name */ | ||
37 | char fs_fpack[6]; /* file system pack name */ | ||
38 | __be32 fs_bmsize; /* size of bitmap in bytes */ | ||
39 | __be32 fs_tfree; /* total free data blocks */ | ||
40 | __be32 fs_tinode; /* total free inodes */ | ||
41 | __be32 fs_bmblock; /* bitmap location. */ | ||
42 | __be32 fs_replsb; /* Location of replicated superblock. */ | ||
43 | __be32 fs_lastialloc; /* last allocated inode */ | ||
44 | char fs_spare[20]; /* space for expansion - MUST BE ZERO */ | ||
45 | __be32 fs_checksum; /* checksum of volume portion of fs */ | ||
46 | }; | ||
47 | |||
48 | /* efs superblock information in memory */ | ||
49 | struct efs_sb_info { | ||
50 | __u32 fs_magic; /* superblock magic number */ | ||
51 | __u32 fs_start; /* first block of filesystem */ | ||
52 | __u32 first_block; /* first data block in filesystem */ | ||
53 | __u32 total_blocks; /* total number of blocks in filesystem */ | ||
54 | __u32 group_size; /* # of blocks a group consists of */ | ||
55 | __u32 data_free; /* # of free data blocks */ | ||
56 | __u32 inode_free; /* # of free inodes */ | ||
57 | __u16 inode_blocks; /* # of blocks used for inodes in every grp */ | ||
58 | __u16 total_groups; /* # of groups */ | ||
59 | }; | ||
60 | |||
61 | #endif /* __EFS_FS_SB_H__ */ | ||
62 | |||