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 {
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 #define EXT2FS_IS_32_BITMAP(bmap) \
57 (((bmap)->magic == EXT2_ET_MAGIC_GENERIC_BITMAP) || \
58 ((bmap)->magic == EXT2_ET_MAGIC_BLOCK_BITMAP) || \
59 ((bmap)->magic == EXT2_ET_MAGIC_INODE_BITMAP))
61 #define EXT2FS_IS_64_BITMAP(bmap) \
62 (((bmap)->magic == EXT2_ET_MAGIC_GENERIC_BITMAP64) || \
63 ((bmap)->magic == EXT2_ET_MAGIC_BLOCK_BITMAP64) || \
64 ((bmap)->magic == EXT2_ET_MAGIC_INODE_BITMAP64))
66 struct ext2_bitmap_ops {
68 /* Generic bmap operators */
69 errcode_t (*new_bmap)(ext2_filsys fs, ext2fs_generic_bitmap bmap);
70 void (*free_bmap)(ext2fs_generic_bitmap bitmap);
71 errcode_t (*copy_bmap)(ext2fs_generic_bitmap src,
72 ext2fs_generic_bitmap dest);
73 errcode_t (*resize_bmap)(ext2fs_generic_bitmap bitmap,
76 /* bit set/test operators */
77 int (*mark_bmap)(ext2fs_generic_bitmap bitmap, __u64 arg);
78 int (*unmark_bmap)(ext2fs_generic_bitmap bitmap, __u64 arg);
79 int (*test_bmap)(ext2fs_generic_bitmap bitmap, __u64 arg);
80 void (*mark_bmap_extent)(ext2fs_generic_bitmap bitmap, __u64 arg,
82 void (*unmark_bmap_extent)(ext2fs_generic_bitmap bitmap, __u64 arg,
84 int (*test_clear_bmap_extent)(ext2fs_generic_bitmap bitmap,
85 __u64 arg, unsigned int num);
86 errcode_t (*set_bmap_range)(ext2fs_generic_bitmap bitmap,
87 __u64 start, size_t num, void *in);
88 errcode_t (*get_bmap_range)(ext2fs_generic_bitmap bitmap,
89 __u64 start, size_t num, void *out);
90 void (*clear_bmap)(ext2fs_generic_bitmap bitmap);
91 void (*print_stats)(ext2fs_generic_bitmap);
93 /* Find the first zero bit between start and end, inclusive.
94 * May be NULL, in which case a generic function is used. */
95 errcode_t (*find_first_zero)(ext2fs_generic_bitmap bitmap,
96 __u64 start, __u64 end, __u64 *out);
99 extern struct ext2_bitmap_ops ext2fs_blkmap64_bitarray;
100 extern struct ext2_bitmap_ops ext2fs_blkmap64_rbtree;