blob: 7271a497bf05fa1ca8658da33fbbc05b9085d88c
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * bitops.h --- Bitmap frobbing code. The byte swapping routines are |
4 | * also included here. |
5 | * |
6 | * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. |
7 | * |
8 | * %Begin-Header% |
9 | * This file may be redistributed under the terms of the GNU Public |
10 | * License. |
11 | * %End-Header% |
12 | * |
13 | * i386 bitops operations taken from <asm/bitops.h>, Copyright 1992, |
14 | * Linus Torvalds. |
15 | */ |
16 | #include <string.h> |
17 | |
18 | extern int ext2fs_set_bit(unsigned int nr,void * addr); |
19 | extern int ext2fs_clear_bit(unsigned int nr, void * addr); |
20 | extern int ext2fs_test_bit(unsigned int nr, const void * addr); |
21 | extern __u16 ext2fs_swab16(__u16 val); |
22 | extern __u32 ext2fs_swab32(__u32 val); |
23 | |
24 | #ifdef WORDS_BIGENDIAN |
25 | #define ext2fs_cpu_to_le32(x) ext2fs_swab32((x)) |
26 | #define ext2fs_le32_to_cpu(x) ext2fs_swab32((x)) |
27 | #define ext2fs_cpu_to_le16(x) ext2fs_swab16((x)) |
28 | #define ext2fs_le16_to_cpu(x) ext2fs_swab16((x)) |
29 | #define ext2fs_cpu_to_be32(x) ((__u32)(x)) |
30 | #define ext2fs_be32_to_cpu(x) ((__u32)(x)) |
31 | #define ext2fs_cpu_to_be16(x) ((__u16)(x)) |
32 | #define ext2fs_be16_to_cpu(x) ((__u16)(x)) |
33 | #else |
34 | #define ext2fs_cpu_to_le32(x) ((__u32)(x)) |
35 | #define ext2fs_le32_to_cpu(x) ((__u32)(x)) |
36 | #define ext2fs_cpu_to_le16(x) ((__u16)(x)) |
37 | #define ext2fs_le16_to_cpu(x) ((__u16)(x)) |
38 | #define ext2fs_cpu_to_be32(x) ext2fs_swab32((x)) |
39 | #define ext2fs_be32_to_cpu(x) ext2fs_swab32((x)) |
40 | #define ext2fs_cpu_to_be16(x) ext2fs_swab16((x)) |
41 | #define ext2fs_be16_to_cpu(x) ext2fs_swab16((x)) |
42 | #endif |
43 | |
44 | /* |
45 | * EXT2FS bitmap manipulation routines. |
46 | */ |
47 | |
48 | /* Support for sending warning messages from the inline subroutines */ |
49 | extern const char *ext2fs_block_string; |
50 | extern const char *ext2fs_inode_string; |
51 | extern const char *ext2fs_mark_string; |
52 | extern const char *ext2fs_unmark_string; |
53 | extern const char *ext2fs_test_string; |
54 | extern void ext2fs_warn_bitmap(errcode_t errcode, unsigned long arg, |
55 | const char *description); |
56 | extern void ext2fs_warn_bitmap2(ext2fs_generic_bitmap bitmap, |
57 | int code, unsigned long arg); |
58 | |
59 | extern int ext2fs_mark_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block); |
60 | extern int ext2fs_unmark_block_bitmap(ext2fs_block_bitmap bitmap, |
61 | blk_t block); |
62 | extern int ext2fs_test_block_bitmap(ext2fs_block_bitmap bitmap, blk_t block); |
63 | |
64 | extern int ext2fs_mark_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode); |
65 | extern int ext2fs_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap, |
66 | ext2_ino_t inode); |
67 | extern int ext2fs_test_inode_bitmap(ext2fs_inode_bitmap bitmap, ext2_ino_t inode); |
68 | |
69 | extern void ext2fs_fast_mark_block_bitmap(ext2fs_block_bitmap bitmap, |
70 | blk_t block); |
71 | extern void ext2fs_fast_unmark_block_bitmap(ext2fs_block_bitmap bitmap, |
72 | blk_t block); |
73 | extern int ext2fs_fast_test_block_bitmap(ext2fs_block_bitmap bitmap, |
74 | blk_t block); |
75 | |
76 | extern void ext2fs_fast_mark_inode_bitmap(ext2fs_inode_bitmap bitmap, |
77 | ext2_ino_t inode); |
78 | extern void ext2fs_fast_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap, |
79 | ext2_ino_t inode); |
80 | extern int ext2fs_fast_test_inode_bitmap(ext2fs_inode_bitmap bitmap, |
81 | ext2_ino_t inode); |
82 | extern blk_t ext2fs_get_block_bitmap_start(ext2fs_block_bitmap bitmap); |
83 | extern ext2_ino_t ext2fs_get_inode_bitmap_start(ext2fs_inode_bitmap bitmap); |
84 | extern blk_t ext2fs_get_block_bitmap_end(ext2fs_block_bitmap bitmap); |
85 | extern ext2_ino_t ext2fs_get_inode_bitmap_end(ext2fs_inode_bitmap bitmap); |
86 | |
87 | extern void ext2fs_mark_block_bitmap_range(ext2fs_block_bitmap bitmap, |
88 | blk_t block, int num); |
89 | extern void ext2fs_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap, |
90 | blk_t block, int num); |
91 | extern int ext2fs_test_block_bitmap_range(ext2fs_block_bitmap bitmap, |
92 | blk_t block, int num); |
93 | extern void ext2fs_fast_mark_block_bitmap_range(ext2fs_block_bitmap bitmap, |
94 | blk_t block, int num); |
95 | extern void ext2fs_fast_unmark_block_bitmap_range(ext2fs_block_bitmap bitmap, |
96 | blk_t block, int num); |
97 | extern int ext2fs_fast_test_block_bitmap_range(ext2fs_block_bitmap bitmap, |
98 | blk_t block, int num); |
99 | extern void ext2fs_set_bitmap_padding(ext2fs_generic_bitmap map); |
100 | |
101 | /* These two routines moved to gen_bitmap.c */ |
102 | extern int ext2fs_mark_generic_bitmap(ext2fs_generic_bitmap bitmap, |
103 | __u32 bitno); |
104 | extern int ext2fs_unmark_generic_bitmap(ext2fs_generic_bitmap bitmap, |
105 | blk_t bitno); |
106 |