2 * bmap64.h --- 64-bit bitmap structure
4 * Copyright (C) 2007, 2008 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Public
12 struct ext2_bmap_statistics {
14 struct timeval created;
16 #ifdef ENABLE_BMAP_STATS_OPS
17 unsigned long copy_count;
18 unsigned long resize_count;
19 unsigned long mark_count;
20 unsigned long unmark_count;
21 unsigned long test_count;
22 unsigned long mark_ext_count;
23 unsigned long unmark_ext_count;
24 unsigned long test_ext_count;
25 unsigned long set_range_count;
26 unsigned long get_range_count;
27 unsigned long clear_count;
34 unsigned long mark_seq;
35 unsigned long test_seq;
36 #endif /* ENABLE_BMAP_STATS_OPS */
40 struct ext2fs_struct_generic_bitmap_64 {
43 struct ext2_bitmap_ops *bitmap_ops;
50 errcode_t base_error_code;
51 #ifdef ENABLE_BMAP_STATS
52 struct ext2_bmap_statistics stats;
56 typedef struct ext2fs_struct_generic_bitmap_64 *ext2fs_generic_bitmap_64;
58 #define EXT2FS_IS_32_BITMAP(bmap) \
59 (((bmap)->magic == EXT2_ET_MAGIC_GENERIC_BITMAP) || \
60 ((bmap)->magic == EXT2_ET_MAGIC_BLOCK_BITMAP) || \
61 ((bmap)->magic == EXT2_ET_MAGIC_INODE_BITMAP))
63 #define EXT2FS_IS_64_BITMAP(bmap) \
64 (((bmap)->magic == EXT2_ET_MAGIC_GENERIC_BITMAP64) || \
65 ((bmap)->magic == EXT2_ET_MAGIC_BLOCK_BITMAP64) || \
66 ((bmap)->magic == EXT2_ET_MAGIC_INODE_BITMAP64))
68 struct ext2_bitmap_ops {
70 /* Generic bmap operators */
71 errcode_t (*new_bmap)(ext2_filsys fs, ext2fs_generic_bitmap_64 bmap);
72 void (*free_bmap)(ext2fs_generic_bitmap_64 bitmap);
73 errcode_t (*copy_bmap)(ext2fs_generic_bitmap_64 src,
74 ext2fs_generic_bitmap_64 dest);
75 errcode_t (*merge_bmap)(ext2fs_generic_bitmap_64 src,
76 ext2fs_generic_bitmap_64 dest,
77 ext2fs_generic_bitmap_64 dup,
78 ext2fs_generic_bitmap_64 dup_allowed);
79 errcode_t (*resize_bmap)(ext2fs_generic_bitmap_64 bitmap,
82 /* bit set/test operators */
83 int (*mark_bmap)(ext2fs_generic_bitmap_64 bitmap, __u64 arg);
84 int (*unmark_bmap)(ext2fs_generic_bitmap_64 bitmap, __u64 arg);
85 int (*test_bmap)(ext2fs_generic_bitmap_64 bitmap, __u64 arg);
86 void (*mark_bmap_extent)(ext2fs_generic_bitmap_64 bitmap, __u64 arg,
88 void (*unmark_bmap_extent)(ext2fs_generic_bitmap_64 bitmap, __u64 arg,
90 int (*test_clear_bmap_extent)(ext2fs_generic_bitmap_64 bitmap,
91 __u64 arg, unsigned int num);
92 errcode_t (*set_bmap_range)(ext2fs_generic_bitmap_64 bitmap,
93 __u64 start, size_t num, void *in);
94 errcode_t (*get_bmap_range)(ext2fs_generic_bitmap_64 bitmap,
95 __u64 start, size_t num, void *out);
96 void (*clear_bmap)(ext2fs_generic_bitmap_64 bitmap);
97 void (*print_stats)(ext2fs_generic_bitmap_64);
99 /* Find the first zero bit between start and end, inclusive.
100 * May be NULL, in which case a generic function is used. */
101 errcode_t (*find_first_zero)(ext2fs_generic_bitmap_64 bitmap,
102 __u64 start, __u64 end, __u64 *out);
103 /* Find the first set bit between start and end, inclusive.
104 * May be NULL, in which case a generic function is used. */
105 errcode_t (*find_first_set)(ext2fs_generic_bitmap_64 bitmap,
106 __u64 start, __u64 end, __u64 *out);
109 extern struct ext2_bitmap_ops ext2fs_blkmap64_bitarray;
110 extern struct ext2_bitmap_ops ext2fs_blkmap64_rbtree;