Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef __LINUX_ROMFS_FS_H |
2 | #define __LINUX_ROMFS_FS_H | |
3 | ||
4 | /* The basic structures of the romfs filesystem */ | |
5 | ||
6 | #define ROMBSIZE BLOCK_SIZE | |
7 | #define ROMBSBITS BLOCK_SIZE_BITS | |
8 | #define ROMBMASK (ROMBSIZE-1) | |
9 | #define ROMFS_MAGIC 0x7275 | |
10 | ||
11 | #define ROMFS_MAXFN 128 | |
12 | ||
13 | #define __mkw(h,l) (((h)&0x00ff)<< 8|((l)&0x00ff)) | |
14 | #define __mkl(h,l) (((h)&0xffff)<<16|((l)&0xffff)) | |
15 | #define __mk4(a,b,c,d) cpu_to_be32(__mkl(__mkw(a,b),__mkw(c,d))) | |
16 | #define ROMSB_WORD0 __mk4('-','r','o','m') | |
17 | #define ROMSB_WORD1 __mk4('1','f','s','-') | |
18 | ||
19 | /* On-disk "super block" */ | |
20 | ||
21 | struct romfs_super_block { | |
22 | __be32 word0; | |
23 | __be32 word1; | |
24 | __be32 size; | |
25 | __be32 checksum; | |
26 | char name[0]; /* volume name */ | |
27 | }; | |
28 | ||
29 | /* On disk inode */ | |
30 | ||
31 | struct romfs_inode { | |
32 | __be32 next; /* low 4 bits see ROMFH_ */ | |
33 | __be32 spec; | |
34 | __be32 size; | |
35 | __be32 checksum; | |
36 | char name[0]; | |
37 | }; | |
38 | ||
39 | #define ROMFH_TYPE 7 | |
40 | #define ROMFH_HRD 0 | |
41 | #define ROMFH_DIR 1 | |
42 | #define ROMFH_REG 2 | |
43 | #define ROMFH_SYM 3 | |
44 | #define ROMFH_BLK 4 | |
45 | #define ROMFH_CHR 5 | |
46 | #define ROMFH_SCK 6 | |
47 | #define ROMFH_FIF 7 | |
48 | #define ROMFH_EXEC 8 | |
49 | ||
50 | /* Alignment */ | |
51 | ||
52 | #define ROMFH_SIZE 16 | |
53 | #define ROMFH_PAD (ROMFH_SIZE-1) | |
54 | #define ROMFH_MASK (~ROMFH_PAD) | |
55 | ||
56 | #ifdef __KERNEL__ | |
57 | ||
58 | /* Not much now */ | |
59 | ||
60 | #endif /* __KERNEL__ */ | |
61 | #endif |