diff options
Diffstat (limited to 'e2fsprogs/ext2fs/brel.h')
-rw-r--r-- | e2fsprogs/ext2fs/brel.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/e2fsprogs/ext2fs/brel.h b/e2fsprogs/ext2fs/brel.h new file mode 100644 index 000000000..216fd132c --- /dev/null +++ b/e2fsprogs/ext2fs/brel.h | |||
@@ -0,0 +1,87 @@ | |||
1 | /* vi: set sw=4 ts=4: */ | ||
2 | /* | ||
3 | * brel.h | ||
4 | * | ||
5 | * Copyright (C) 1996, 1997 Theodore Ts'o. | ||
6 | * | ||
7 | * %Begin-Header% | ||
8 | * This file may be redistributed under the terms of the GNU Public | ||
9 | * License. | ||
10 | * %End-Header% | ||
11 | */ | ||
12 | |||
13 | struct ext2_block_relocate_entry { | ||
14 | blk_t new; | ||
15 | __s16 offset; | ||
16 | __u16 flags; | ||
17 | union { | ||
18 | blk_t block_ref; | ||
19 | ext2_ino_t inode_ref; | ||
20 | } owner; | ||
21 | }; | ||
22 | |||
23 | #define RELOCATE_TYPE_REF 0x0007 | ||
24 | #define RELOCATE_BLOCK_REF 0x0001 | ||
25 | #define RELOCATE_INODE_REF 0x0002 | ||
26 | |||
27 | typedef struct ext2_block_relocation_table *ext2_brel; | ||
28 | |||
29 | struct ext2_block_relocation_table { | ||
30 | __u32 magic; | ||
31 | char *name; | ||
32 | blk_t current; | ||
33 | void *priv_data; | ||
34 | |||
35 | /* | ||
36 | * Add a block relocation entry. | ||
37 | */ | ||
38 | errcode_t (*put)(ext2_brel brel, blk_t old, | ||
39 | struct ext2_block_relocate_entry *ent); | ||
40 | |||
41 | /* | ||
42 | * Get a block relocation entry. | ||
43 | */ | ||
44 | errcode_t (*get)(ext2_brel brel, blk_t old, | ||
45 | struct ext2_block_relocate_entry *ent); | ||
46 | |||
47 | /* | ||
48 | * Initialize for iterating over the block relocation entries. | ||
49 | */ | ||
50 | errcode_t (*start_iter)(ext2_brel brel); | ||
51 | |||
52 | /* | ||
53 | * The iterator function for the inode relocation entries. | ||
54 | * Returns an inode number of 0 when out of entries. | ||
55 | */ | ||
56 | errcode_t (*next)(ext2_brel brel, blk_t *old, | ||
57 | struct ext2_block_relocate_entry *ent); | ||
58 | |||
59 | /* | ||
60 | * Move the inode relocation table from one block number to | ||
61 | * another. | ||
62 | */ | ||
63 | errcode_t (*move)(ext2_brel brel, blk_t old, blk_t new); | ||
64 | |||
65 | /* | ||
66 | * Remove a block relocation entry. | ||
67 | */ | ||
68 | errcode_t (*delete)(ext2_brel brel, blk_t old); | ||
69 | |||
70 | |||
71 | /* | ||
72 | * Free the block relocation table. | ||
73 | */ | ||
74 | errcode_t (*free)(ext2_brel brel); | ||
75 | }; | ||
76 | |||
77 | errcode_t ext2fs_brel_memarray_create(char *name, blk_t max_block, | ||
78 | ext2_brel *brel); | ||
79 | |||
80 | #define ext2fs_brel_put(brel, old, ent) ((brel)->put((brel), old, ent)) | ||
81 | #define ext2fs_brel_get(brel, old, ent) ((brel)->get((brel), old, ent)) | ||
82 | #define ext2fs_brel_start_iter(brel) ((brel)->start_iter((brel))) | ||
83 | #define ext2fs_brel_next(brel, old, ent) ((brel)->next((brel), old, ent)) | ||
84 | #define ext2fs_brel_move(brel, old, new) ((brel)->move((brel), old, new)) | ||
85 | #define ext2fs_brel_delete(brel, old) ((brel)->delete((brel), old)) | ||
86 | #define ext2fs_brel_free(brel) ((brel)->free((brel))) | ||
87 | |||