source: MondoRescue/branches/stable/mindi-busybox/e2fsprogs/ext2fs/brel.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: 2.0 KB
RevLine 
[821]1/*
2 * brel.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_block_relocate_entry {
13    blk_t   new;
14    __s16   offset;
15    __u16   flags;
16    union {
17        blk_t       block_ref;
18        ext2_ino_t  inode_ref;
19    } owner;
20};
21
22#define RELOCATE_TYPE_REF  0x0007
23#define RELOCATE_BLOCK_REF 0x0001
24#define RELOCATE_INODE_REF 0x0002
25
26typedef struct ext2_block_relocation_table *ext2_brel;
27
28struct ext2_block_relocation_table {
29    __u32   magic;
30    char    *name;
31    blk_t   current;
32    void    *priv_data;
33
34    /*
35     * Add a block relocation entry.
36     */
37    errcode_t (*put)(ext2_brel brel, blk_t old,
38                  struct ext2_block_relocate_entry *ent);
39
40    /*
41     * Get a block relocation entry.
42     */
43    errcode_t (*get)(ext2_brel brel, blk_t old,
44                  struct ext2_block_relocate_entry *ent);
45
46    /*
47     * Initialize for iterating over the block relocation entries.
48     */
49    errcode_t (*start_iter)(ext2_brel brel);
50
51    /*
52     * The iterator function for the inode relocation entries.
53     * Returns an inode number of 0 when out of entries.
54     */
55    errcode_t (*next)(ext2_brel brel, blk_t *old,
56              struct ext2_block_relocate_entry *ent);
57
58    /*
59     * Move the inode relocation table from one block number to
60     * another.
61     */
62    errcode_t (*move)(ext2_brel brel, blk_t old, blk_t new);
63
64    /*
65     * Remove a block relocation entry.
66     */
67    errcode_t (*delete)(ext2_brel brel, blk_t old);
68
69
70    /*
71     * Free the block relocation table.
72     */
73    errcode_t (*free)(ext2_brel brel);
74};
75
76errcode_t ext2fs_brel_memarray_create(char *name, blk_t max_block,
77                    ext2_brel *brel);
78
79#define ext2fs_brel_put(brel, old, ent) ((brel)->put((brel), old, ent))
80#define ext2fs_brel_get(brel, old, ent) ((brel)->get((brel), old, ent))
81#define ext2fs_brel_start_iter(brel) ((brel)->start_iter((brel)))
82#define ext2fs_brel_next(brel, old, ent) ((brel)->next((brel), old, ent))
83#define ext2fs_brel_move(brel, old, new) ((brel)->move((brel), old, new))
84#define ext2fs_brel_delete(brel, old) ((brel)->delete((brel), old))
85#define ext2fs_brel_free(brel) ((brel)->free((brel)))
86
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