source: MondoRescue/branches/stable/mindi-busybox/e2fsprogs/ext2fs/bitops.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: 4.2 KB
Line 
1/*
2 * bitops.h --- Bitmap frobbing code.  The byte swapping routines are
3 *  also included here.
4 *
5 * Copyright (C) 1993, 1994, 1995, 1996 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 * i386 bitops operations taken from <asm/bitops.h>, Copyright 1992,
13 * Linus Torvalds.
14 */
15
16#include <string.h>
17#include <strings.h>
18
19extern int ext2fs_set_bit(unsigned int nr,void * addr);
20extern int ext2fs_clear_bit(unsigned int nr, void * addr);
21extern int ext2fs_test_bit(unsigned int nr, const void * addr);
22extern __u16 ext2fs_swab16(__u16 val);
23extern __u32 ext2fs_swab32(__u32 val);
24
25#ifdef WORDS_BIGENDIAN
26#define ext2fs_cpu_to_le32(x) ext2fs_swab32((x))
27#define ext2fs_le32_to_cpu(x) ext2fs_swab32((x))
28#define ext2fs_cpu_to_le16(x) ext2fs_swab16((x))
29#define ext2fs_le16_to_cpu(x) ext2fs_swab16((x))
30#define ext2fs_cpu_to_be32(x) ((__u32)(x))
31#define ext2fs_be32_to_cpu(x) ((__u32)(x))
32#define ext2fs_cpu_to_be16(x) ((__u16)(x))
33#define ext2fs_be16_to_cpu(x) ((__u16)(x))
34#else
35#define ext2fs_cpu_to_le32(x) ((__u32)(x))
36#define ext2fs_le32_to_cpu(x) ((__u32)(x))
37#define ext2fs_cpu_to_le16(x) ((__u16)(x))
38#define ext2fs_le16_to_cpu(x) ((__u16)(x))
39#define ext2fs_cpu_to_be32(x) ext2fs_swab32((x))
40#define ext2fs_be32_to_cpu(x) ext2fs_swab32((x))
41#define ext2fs_cpu_to_be16(x) ext2fs_swab16((x))
42#define ext2fs_be16_to_cpu(x) ext2fs_swab16((x))
43#endif
44
45/*
46 * EXT2FS bitmap manipulation routines.
47 */
48
49/* Support for sending warning messages from the inline subroutines */
50extern const char *ext2fs_block_string;
51extern const char *ext2fs_inode_string;
52extern const char *ext2fs_mark_string;
53extern const char *ext2fs_unmark_string;
54extern const char *ext2fs_test_string;
55extern void ext2fs_warn_bitmap(errcode_t errcode, unsigned long arg,
56                   const char *description);
57extern void ext2fs_warn_bitmap2(ext2fs_generic_bitmap bitmap,
58                int code, unsigned long arg);
59
60extern int ext2fs_mark_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block);
61extern int ext2fs_unmark_block_bitmap(ext2fs_block_bitmap bitmap,
62                       blk_t block);
63extern int ext2fs_test_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block);
64
65extern int ext2fs_mark_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode);
66extern int ext2fs_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap,
67                       ext2_ino_t inode);
68extern int ext2fs_test_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode);
69
70extern void ext2fs_fast_mark_block_bitmap(ext2fs_block_bitmap bitmap,
71                      blk_t block);
72extern void ext2fs_fast_unmark_block_bitmap(ext2fs_block_bitmap bitmap,
73                        blk_t block);
74extern int ext2fs_fast_test_block_bitmap(ext2fs_block_bitmap bitmap,
75                     blk_t block);
76
77extern void ext2fs_fast_mark_inode_bitmap(ext2fs_inode_bitmap bitmap,
78                      ext2_ino_t inode);
79extern void ext2fs_fast_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap,
80                        ext2_ino_t inode);
81extern int ext2fs_fast_test_inode_bitmap(ext2fs_inode_bitmap bitmap,
82                     ext2_ino_t inode);
83extern blk_t ext2fs_get_block_bitmap_start(ext2fs_block_bitmap bitmap);
84extern ext2_ino_t ext2fs_get_inode_bitmap_start(ext2fs_inode_bitmap bitmap);
85extern blk_t ext2fs_get_block_bitmap_end(ext2fs_block_bitmap bitmap);
86extern ext2_ino_t ext2fs_get_inode_bitmap_end(ext2fs_inode_bitmap bitmap);
87
88extern void ext2fs_mark_block_bitmap_range(ext2fs_block_bitmap bitmap,
89                       blk_t block, int num);
90extern void ext2fs_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap,
91                         blk_t block, int num);
92extern int ext2fs_test_block_bitmap_range(ext2fs_block_bitmap bitmap,
93                      blk_t block, int num);
94extern void ext2fs_fast_mark_block_bitmap_range(ext2fs_block_bitmap bitmap,
95                        blk_t block, int num);
96extern void ext2fs_fast_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap,
97                          blk_t block, int num);
98extern int ext2fs_fast_test_block_bitmap_range(ext2fs_block_bitmap bitmap,
99                           blk_t block, int num);
100extern void ext2fs_set_bitmap_padding(ext2fs_generic_bitmap map);
101
102/* These two routines moved to gen_bitmap.c */
103extern int ext2fs_mark_generic_bitmap(ext2fs_generic_bitmap bitmap,
104                     __u32 bitno);
105extern int ext2fs_unmark_generic_bitmap(ext2fs_generic_bitmap bitmap,
106                       blk_t bitno);
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