107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
/*
|
|
* 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;
|