source: branches/stable/mindi-busybox/e2fsprogs/ext2fs/cmp_bitmaps.c @ 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: 1.7 KB
Line 
1/*
2 * cmp_bitmaps.c --- routines to compare inode and block bitmaps.
3 *
4 * Copyright (C) 1995 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
12#include <stdio.h>
13#include <string.h>
14#if HAVE_UNISTD_H
15#include <unistd.h>
16#endif
17#include <fcntl.h>
18#include <time.h>
19#if HAVE_SYS_STAT_H
20#include <sys/stat.h>
21#endif
22#if HAVE_SYS_TYPES_H
23#include <sys/types.h>
24#endif
25
26#include "ext2_fs.h"
27#include "ext2fs.h"
28
29errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
30                      ext2fs_block_bitmap bm2)
31{
32    blk_t   i;
33
34    EXT2_CHECK_MAGIC(bm1, EXT2_ET_MAGIC_BLOCK_BITMAP);
35    EXT2_CHECK_MAGIC(bm2, EXT2_ET_MAGIC_BLOCK_BITMAP);
36
37    if ((bm1->start != bm2->start) ||
38        (bm1->end != bm2->end) ||
39        (memcmp(bm1->bitmap, bm2->bitmap,
40            (size_t) (bm1->end - bm1->start)/8)))
41        return EXT2_ET_NEQ_BLOCK_BITMAP;
42
43    for (i = bm1->end - ((bm1->end - bm1->start) % 8); i <= bm1->end; i++)
44        if (ext2fs_fast_test_block_bitmap(bm1, i) !=
45            ext2fs_fast_test_block_bitmap(bm2, i))
46            return EXT2_ET_NEQ_BLOCK_BITMAP;
47
48    return 0;
49}
50
51errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
52                      ext2fs_inode_bitmap bm2)
53{
54    ext2_ino_t  i;
55
56    EXT2_CHECK_MAGIC(bm1, EXT2_ET_MAGIC_INODE_BITMAP);
57    EXT2_CHECK_MAGIC(bm2, EXT2_ET_MAGIC_INODE_BITMAP);
58
59    if ((bm1->start != bm2->start) ||
60        (bm1->end != bm2->end) ||
61        (memcmp(bm1->bitmap, bm2->bitmap,
62            (size_t) (bm1->end - bm1->start)/8)))
63        return EXT2_ET_NEQ_INODE_BITMAP;
64
65    for (i = bm1->end - ((bm1->end - bm1->start) % 8); i <= bm1->end; i++)
66        if (ext2fs_fast_test_inode_bitmap(bm1, i) !=
67            ext2fs_fast_test_inode_bitmap(bm2, i))
68            return EXT2_ET_NEQ_INODE_BITMAP;
69
70    return 0;
71}
72
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