Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * efs_dir.h | |
3 | * | |
4 | * Copyright (c) 1999 Al Smith | |
5 | */ | |
6 | ||
7 | #ifndef __EFS_DIR_H__ | |
8 | #define __EFS_DIR_H__ | |
9 | ||
10 | #define EFS_DIRBSIZE_BITS EFS_BLOCKSIZE_BITS | |
11 | #define EFS_DIRBSIZE (1 << EFS_DIRBSIZE_BITS) | |
12 | ||
13 | struct efs_dentry { | |
14 | __be32 inode; | |
15 | unsigned char namelen; | |
16 | char name[3]; | |
17 | }; | |
18 | ||
19 | #define EFS_DENTSIZE (sizeof(struct efs_dentry) - 3 + 1) | |
20 | #define EFS_MAXNAMELEN ((1 << (sizeof(char) * 8)) - 1) | |
21 | ||
22 | #define EFS_DIRBLK_HEADERSIZE 4 | |
23 | #define EFS_DIRBLK_MAGIC 0xbeef /* moo */ | |
24 | ||
25 | struct efs_dir { | |
26 | __be16 magic; | |
27 | unsigned char firstused; | |
28 | unsigned char slots; | |
29 | ||
30 | unsigned char space[EFS_DIRBSIZE - EFS_DIRBLK_HEADERSIZE]; | |
31 | }; | |
32 | ||
33 | #define EFS_MAXENTS \ | |
34 | ((EFS_DIRBSIZE - EFS_DIRBLK_HEADERSIZE) / \ | |
35 | (EFS_DENTSIZE + sizeof(char))) | |
36 | ||
37 | #define EFS_SLOTAT(dir, slot) EFS_REALOFF((dir)->space[slot]) | |
38 | ||
39 | #define EFS_REALOFF(offset) ((offset << 1)) | |
40 | ||
41 | #endif /* __EFS_DIR_H__ */ | |
42 |