source: branches/stable/mindi-busybox/e2fsprogs/ext2fs/irel.h @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 3.3 KB
Line 
1/*
2 * irel.h
3 *
4 * Copyright (C) 1996, 1997 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Public
8 * License.
9 * %End-Header%
10 */
11
12struct ext2_inode_reference {
13    blk_t   block;
14    __u16 offset;
15};
16
17struct ext2_inode_relocate_entry {
18    ext2_ino_t  new;
19    ext2_ino_t  orig;
20    __u16       flags;
21    __u16       max_refs;
22};
23
24typedef struct ext2_inode_relocation_table *ext2_irel;
25
26struct ext2_inode_relocation_table {
27    __u32   magic;
28    char    *name;
29    ext2_ino_t  current;
30    void    *priv_data;
31
32    /*
33     * Add an inode relocation entry.
34     */
35    errcode_t (*put)(ext2_irel irel, ext2_ino_t old,
36                  struct ext2_inode_relocate_entry *ent);
37    /*
38     * Get an inode relocation entry.
39     */
40    errcode_t (*get)(ext2_irel irel, ext2_ino_t old,
41                  struct ext2_inode_relocate_entry *ent);
42
43    /*
44     * Get an inode relocation entry by its original inode number
45     */
46    errcode_t (*get_by_orig)(ext2_irel irel, ext2_ino_t orig, ext2_ino_t *old,
47                 struct ext2_inode_relocate_entry *ent);
48
49    /*
50     * Initialize for iterating over the inode relocation entries.
51     */
52    errcode_t (*start_iter)(ext2_irel irel);
53
54    /*
55     * The iterator function for the inode relocation entries.
56     * Returns an inode number of 0 when out of entries.
57     */
58    errcode_t (*next)(ext2_irel irel, ext2_ino_t *old,
59              struct ext2_inode_relocate_entry *ent);
60
61    /*
62     * Add an inode reference (i.e., note the fact that a
63     * particular block/offset contains a reference to an inode)
64     */
65    errcode_t (*add_ref)(ext2_irel irel, ext2_ino_t ino,
66                 struct ext2_inode_reference *ref);
67
68    /*
69     * Initialize for iterating over the inode references for a
70     * particular inode.
71     */
72    errcode_t (*start_iter_ref)(ext2_irel irel, ext2_ino_t ino);
73
74    /*
75     * The iterator function for the inode references for an
76     * inode.  The references for only one inode can be interator
77     * over at a time, as the iterator state is stored in ext2_irel.
78     */
79    errcode_t (*next_ref)(ext2_irel irel,
80                  struct ext2_inode_reference *ref);
81
82    /*
83     * Move the inode relocation table from one inode number to
84     * another.  Note that the inode references also must move.
85     */
86    errcode_t (*move)(ext2_irel irel, ext2_ino_t old, ext2_ino_t new);
87
88    /*
89     * Remove an inode relocation entry, along with all of the
90     * inode references.
91     */
92    errcode_t (*delete)(ext2_irel irel, ext2_ino_t old);
93
94    /*
95     * Free the inode relocation table.
96     */
97    errcode_t (*free)(ext2_irel irel);
98};
99
100errcode_t ext2fs_irel_memarray_create(char *name, ext2_ino_t max_inode,
101                    ext2_irel *irel);
102
103#define ext2fs_irel_put(irel, old, ent) ((irel)->put((irel), old, ent))
104#define ext2fs_irel_get(irel, old, ent) ((irel)->get((irel), old, ent))
105#define ext2fs_irel_get_by_orig(irel, orig, old, ent) \
106            ((irel)->get_by_orig((irel), orig, old, ent))
107#define ext2fs_irel_start_iter(irel) ((irel)->start_iter((irel)))
108#define ext2fs_irel_next(irel, old, ent) ((irel)->next((irel), old, ent))
109#define ext2fs_irel_add_ref(irel, ino, ref) ((irel)->add_ref((irel), ino, ref))
110#define ext2fs_irel_start_iter_ref(irel, ino) ((irel)->start_iter_ref((irel), ino))
111#define ext2fs_irel_next_ref(irel, ref) ((irel)->next_ref((irel), ref))
112#define ext2fs_irel_move(irel, old, new) ((irel)->move((irel), old, new))
113#define ext2fs_irel_delete(irel, old) ((irel)->delete((irel), old))
114#define ext2fs_irel_free(irel) ((irel)->free((irel)))
Note: See TracBrowser for help on using the repository browser.