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