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 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
);
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))
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))
45 * EXT2FS bitmap manipulation routines.
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
);
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
,
62 extern int ext2fs_test_block_bitmap(ext2fs_block_bitmap bitmap
, blk_t block
);
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
,
67 extern int ext2fs_test_inode_bitmap(ext2fs_inode_bitmap bitmap
, ext2_ino_t inode
);
69 extern void ext2fs_fast_mark_block_bitmap(ext2fs_block_bitmap bitmap
,
71 extern void ext2fs_fast_unmark_block_bitmap(ext2fs_block_bitmap bitmap
,
73 extern int ext2fs_fast_test_block_bitmap(ext2fs_block_bitmap bitmap
,
76 extern void ext2fs_fast_mark_inode_bitmap(ext2fs_inode_bitmap bitmap
,
78 extern void ext2fs_fast_unmark_inode_bitmap(ext2fs_inode_bitmap bitmap
,
80 extern int ext2fs_fast_test_inode_bitmap(ext2fs_inode_bitmap bitmap
,
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
);
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
);
101 /* These two routines moved to gen_bitmap.c */
102 extern int ext2fs_mark_generic_bitmap(ext2fs_generic_bitmap bitmap
,
104 extern int ext2fs_unmark_generic_bitmap(ext2fs_generic_bitmap bitmap
,