diff options
Diffstat (limited to 'e2fsprogs/ext2fs/irel.h')
-rw-r--r-- | e2fsprogs/ext2fs/irel.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/e2fsprogs/ext2fs/irel.h b/e2fsprogs/ext2fs/irel.h new file mode 100644 index 000000000..91d1d89d5 --- /dev/null +++ b/e2fsprogs/ext2fs/irel.h | |||
@@ -0,0 +1,115 @@ | |||
1 | /* vi: set sw=4 ts=4: */ | ||
2 | /* | ||
3 | * irel.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_inode_reference { | ||
14 | blk_t block; | ||
15 | __u16 offset; | ||
16 | }; | ||
17 | |||
18 | struct ext2_inode_relocate_entry { | ||
19 | ext2_ino_t new; | ||
20 | ext2_ino_t orig; | ||
21 | __u16 flags; | ||
22 | __u16 max_refs; | ||
23 | }; | ||
24 | |||
25 | typedef struct ext2_inode_relocation_table *ext2_irel; | ||
26 | |||
27 | struct ext2_inode_relocation_table { | ||
28 | __u32 magic; | ||
29 | char *name; | ||
30 | ext2_ino_t current; | ||
31 | void *priv_data; | ||
32 | |||
33 | /* | ||
34 | * Add an inode relocation entry. | ||
35 | */ | ||
36 | errcode_t (*put)(ext2_irel irel, ext2_ino_t old, | ||
37 | struct ext2_inode_relocate_entry *ent); | ||
38 | /* | ||
39 | * Get an inode relocation entry. | ||
40 | */ | ||
41 | errcode_t (*get)(ext2_irel irel, ext2_ino_t old, | ||
42 | struct ext2_inode_relocate_entry *ent); | ||
43 | |||
44 | /* | ||
45 | * Get an inode relocation entry by its original inode number | ||
46 | */ | ||
47 | errcode_t (*get_by_orig)(ext2_irel irel, ext2_ino_t orig, ext2_ino_t *old, | ||
48 | struct ext2_inode_relocate_entry *ent); | ||
49 | |||
50 | /* | ||
51 | * Initialize for iterating over the inode relocation entries. | ||
52 | */ | ||
53 | errcode_t (*start_iter)(ext2_irel irel); | ||
54 | |||
55 | /* | ||
56 | * The iterator function for the inode relocation entries. | ||
57 | * Returns an inode number of 0 when out of entries. | ||
58 | */ | ||
59 | errcode_t (*next)(ext2_irel irel, ext2_ino_t *old, | ||
60 | struct ext2_inode_relocate_entry *ent); | ||
61 | |||
62 | /* | ||
63 | * Add an inode reference (i.e., note the fact that a | ||
64 | * particular block/offset contains a reference to an inode) | ||
65 | */ | ||
66 | errcode_t (*add_ref)(ext2_irel irel, ext2_ino_t ino, | ||
67 | struct ext2_inode_reference *ref); | ||
68 | |||
69 | /* | ||
70 | * Initialize for iterating over the inode references for a | ||
71 | * particular inode. | ||
72 | */ | ||
73 | errcode_t (*start_iter_ref)(ext2_irel irel, ext2_ino_t ino); | ||
74 | |||
75 | /* | ||
76 | * The iterator function for the inode references for an | ||
77 | * inode. The references for only one inode can be interator | ||
78 | * over at a time, as the iterator state is stored in ext2_irel. | ||
79 | */ | ||
80 | errcode_t (*next_ref)(ext2_irel irel, | ||
81 | struct ext2_inode_reference *ref); | ||
82 | |||
83 | /* | ||
84 | * Move the inode relocation table from one inode number to | ||
85 | * another. Note that the inode references also must move. | ||
86 | */ | ||
87 | errcode_t (*move)(ext2_irel irel, ext2_ino_t old, ext2_ino_t new); | ||
88 | |||
89 | /* | ||
90 | * Remove an inode relocation entry, along with all of the | ||
91 | * inode references. | ||
92 | */ | ||
93 | errcode_t (*delete)(ext2_irel irel, ext2_ino_t old); | ||
94 | |||
95 | /* | ||
96 | * Free the inode relocation table. | ||
97 | */ | ||
98 | errcode_t (*free)(ext2_irel irel); | ||
99 | }; | ||
100 | |||
101 | errcode_t ext2fs_irel_memarray_create(char *name, ext2_ino_t max_inode, | ||
102 | ext2_irel *irel); | ||
103 | |||
104 | #define ext2fs_irel_put(irel, old, ent) ((irel)->put((irel), old, ent)) | ||
105 | #define ext2fs_irel_get(irel, old, ent) ((irel)->get((irel), old, ent)) | ||
106 | #define ext2fs_irel_get_by_orig(irel, orig, old, ent) \ | ||
107 | ((irel)->get_by_orig((irel), orig, old, ent)) | ||
108 | #define ext2fs_irel_start_iter(irel) ((irel)->start_iter((irel))) | ||
109 | #define ext2fs_irel_next(irel, old, ent) ((irel)->next((irel), old, ent)) | ||
110 | #define ext2fs_irel_add_ref(irel, ino, ref) ((irel)->add_ref((irel), ino, ref)) | ||
111 | #define ext2fs_irel_start_iter_ref(irel, ino) ((irel)->start_iter_ref((irel), ino)) | ||
112 | #define ext2fs_irel_next_ref(irel, ref) ((irel)->next_ref((irel), ref)) | ||
113 | #define ext2fs_irel_move(irel, old, new) ((irel)->move((irel), old, new)) | ||
114 | #define ext2fs_irel_delete(irel, old) ((irel)->delete((irel), old)) | ||
115 | #define ext2fs_irel_free(irel) ((irel)->free((irel))) | ||