1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/*
* bmap64.h --- 64-bit bitmap structure
*
* Copyright (C) 2007, 2008 Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
*/
struct ext2_bmap_statistics {
int type;
struct timeval created;
#ifdef ENABLE_BMAP_STATS_OPS
unsigned long copy_count;
unsigned long resize_count;
unsigned long mark_count;
unsigned long unmark_count;
unsigned long test_count;
unsigned long mark_ext_count;
unsigned long unmark_ext_count;
unsigned long test_ext_count;
unsigned long set_range_count;
unsigned long get_range_count;
unsigned long clear_count;
blk64_t last_marked;
blk64_t last_tested;
blk64_t mark_back;
blk64_t test_back;
unsigned long mark_seq;
unsigned long test_seq;
#endif /* ENABLE_BMAP_STATS_OPS */
};
struct ext2fs_struct_generic_bitmap_64 {
errcode_t magic;
ext2_filsys fs;
struct ext2_bitmap_ops *bitmap_ops;
int flags;
__u64 start, end;
__u64 real_end;
int cluster_bits;
char *description;
void *private;
errcode_t base_error_code;
#ifdef ENABLE_BMAP_STATS
struct ext2_bmap_statistics stats;
#endif
};
typedef struct ext2fs_struct_generic_bitmap_64 *ext2fs_generic_bitmap_64;
#define EXT2FS_IS_32_BITMAP(bmap) \
(((bmap)->magic == EXT2_ET_MAGIC_GENERIC_BITMAP) || \
((bmap)->magic == EXT2_ET_MAGIC_BLOCK_BITMAP) || \
((bmap)->magic == EXT2_ET_MAGIC_INODE_BITMAP))
#define EXT2FS_IS_64_BITMAP(bmap) \
(((bmap)->magic == EXT2_ET_MAGIC_GENERIC_BITMAP64) || \
((bmap)->magic == EXT2_ET_MAGIC_BLOCK_BITMAP64) || \
((bmap)->magic == EXT2_ET_MAGIC_INODE_BITMAP64))
struct ext2_bitmap_ops {
int type;
/* Generic bmap operators */
errcode_t (*new_bmap)(ext2_filsys fs, ext2fs_generic_bitmap_64 bmap);
void (*free_bmap)(ext2fs_generic_bitmap_64 bitmap);
errcode_t (*copy_bmap)(ext2fs_generic_bitmap_64 src,
ext2fs_generic_bitmap_64 dest);
errcode_t (*resize_bmap)(ext2fs_generic_bitmap_64 bitmap,
__u64 new_end,
__u64 new_real_end);
/* bit set/test operators */
int (*mark_bmap)(ext2fs_generic_bitmap_64 bitmap, __u64 arg);
int (*unmark_bmap)(ext2fs_generic_bitmap_64 bitmap, __u64 arg);
int (*test_bmap)(ext2fs_generic_bitmap_64 bitmap, __u64 arg);
void (*mark_bmap_extent)(ext2fs_generic_bitmap_64 bitmap, __u64 arg,
unsigned int num);
void (*unmark_bmap_extent)(ext2fs_generic_bitmap_64 bitmap, __u64 arg,
unsigned int num);
int (*test_clear_bmap_extent)(ext2fs_generic_bitmap_64 bitmap,
__u64 arg, unsigned int num);
errcode_t (*set_bmap_range)(ext2fs_generic_bitmap_64 bitmap,
__u64 start, size_t num, void *in);
errcode_t (*get_bmap_range)(ext2fs_generic_bitmap_64 bitmap,
__u64 start, size_t num, void *out);
void (*clear_bmap)(ext2fs_generic_bitmap_64 bitmap);
void (*print_stats)(ext2fs_generic_bitmap_64);
/* Find the first zero bit between start and end, inclusive.
* May be NULL, in which case a generic function is used. */
errcode_t (*find_first_zero)(ext2fs_generic_bitmap_64 bitmap,
__u64 start, __u64 end, __u64 *out);
/* Find the first set bit between start and end, inclusive.
* May be NULL, in which case a generic function is used. */
errcode_t (*find_first_set)(ext2fs_generic_bitmap_64 bitmap,
__u64 start, __u64 end, __u64 *out);
};
extern struct ext2_bitmap_ops ext2fs_blkmap64_bitarray;
extern struct ext2_bitmap_ops ext2fs_blkmap64_rbtree;
|
