diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
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committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /include/linux/romfs_fs.h | |
parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) |
Diffstat (limited to 'include/linux/romfs_fs.h')
-rw-r--r-- | include/linux/romfs_fs.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/include/linux/romfs_fs.h b/include/linux/romfs_fs.h new file mode 100644 index 00000000000..5f57f93b284 --- /dev/null +++ b/include/linux/romfs_fs.h | |||
@@ -0,0 +1,59 @@ | |||
1 | #ifndef __LINUX_ROMFS_FS_H | ||
2 | #define __LINUX_ROMFS_FS_H | ||
3 | |||
4 | #include <linux/types.h> | ||
5 | #include <linux/fs.h> | ||
6 | |||
7 | /* The basic structures of the romfs filesystem */ | ||
8 | |||
9 | #define ROMBSIZE BLOCK_SIZE | ||
10 | #define ROMBSBITS BLOCK_SIZE_BITS | ||
11 | #define ROMBMASK (ROMBSIZE-1) | ||
12 | #define ROMFS_MAGIC 0x7275 | ||
13 | |||
14 | #define ROMFS_MAXFN 128 | ||
15 | |||
16 | #define __mkw(h,l) (((h)&0x00ff)<< 8|((l)&0x00ff)) | ||
17 | #define __mkl(h,l) (((h)&0xffff)<<16|((l)&0xffff)) | ||
18 | #define __mk4(a,b,c,d) cpu_to_be32(__mkl(__mkw(a,b),__mkw(c,d))) | ||
19 | #define ROMSB_WORD0 __mk4('-','r','o','m') | ||
20 | #define ROMSB_WORD1 __mk4('1','f','s','-') | ||
21 | |||
22 | /* On-disk "super block" */ | ||
23 | |||
24 | struct romfs_super_block { | ||
25 | __be32 word0; | ||
26 | __be32 word1; | ||
27 | __be32 size; | ||
28 | __be32 checksum; | ||
29 | char name[0]; /* volume name */ | ||
30 | }; | ||
31 | |||
32 | /* On disk inode */ | ||
33 | |||
34 | struct romfs_inode { | ||
35 | __be32 next; /* low 4 bits see ROMFH_ */ | ||
36 | __be32 spec; | ||
37 | __be32 size; | ||
38 | __be32 checksum; | ||
39 | char name[0]; | ||
40 | }; | ||
41 | |||
42 | #define ROMFH_TYPE 7 | ||
43 | #define ROMFH_HRD 0 | ||
44 | #define ROMFH_DIR 1 | ||
45 | #define ROMFH_REG 2 | ||
46 | #define ROMFH_SYM 3 | ||
47 | #define ROMFH_BLK 4 | ||
48 | #define ROMFH_CHR 5 | ||
49 | #define ROMFH_SCK 6 | ||
50 | #define ROMFH_FIF 7 | ||
51 | #define ROMFH_EXEC 8 | ||
52 | |||
53 | /* Alignment */ | ||
54 | |||
55 | #define ROMFH_SIZE 16 | ||
56 | #define ROMFH_PAD (ROMFH_SIZE-1) | ||
57 | #define ROMFH_MASK (~ROMFH_PAD) | ||
58 | |||
59 | #endif | ||