/*
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* bmap64.h --- 64-bit bitmap structure
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*
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* Copyright (C) 2007, 2008 Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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struct ext2_bmap_statistics {
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int type;
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struct timeval created;
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#ifdef ENABLE_BMAP_STATS_OPS
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unsigned long copy_count;
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unsigned long resize_count;
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unsigned long mark_count;
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unsigned long unmark_count;
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unsigned long test_count;
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unsigned long mark_ext_count;
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unsigned long unmark_ext_count;
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unsigned long test_ext_count;
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unsigned long set_range_count;
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unsigned long get_range_count;
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unsigned long clear_count;
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blk64_t last_marked;
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blk64_t last_tested;
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blk64_t mark_back;
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blk64_t test_back;
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unsigned long mark_seq;
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unsigned long test_seq;
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#endif /* ENABLE_BMAP_STATS_OPS */
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};
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struct ext2fs_struct_generic_bitmap_64 {
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errcode_t magic;
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ext2_filsys fs;
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struct ext2_bitmap_ops *bitmap_ops;
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int flags;
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__u64 start, end;
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__u64 real_end;
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int cluster_bits;
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char *description;
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void *private;
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errcode_t base_error_code;
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#ifdef ENABLE_BMAP_STATS
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struct ext2_bmap_statistics stats;
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#endif
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};
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typedef struct ext2fs_struct_generic_bitmap_64 *ext2fs_generic_bitmap_64;
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#define EXT2FS_IS_32_BITMAP(bmap) \
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(((bmap)->magic == EXT2_ET_MAGIC_GENERIC_BITMAP) || \
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((bmap)->magic == EXT2_ET_MAGIC_BLOCK_BITMAP) || \
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((bmap)->magic == EXT2_ET_MAGIC_INODE_BITMAP))
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#define EXT2FS_IS_64_BITMAP(bmap) \
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(((bmap)->magic == EXT2_ET_MAGIC_GENERIC_BITMAP64) || \
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((bmap)->magic == EXT2_ET_MAGIC_BLOCK_BITMAP64) || \
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((bmap)->magic == EXT2_ET_MAGIC_INODE_BITMAP64))
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struct ext2_bitmap_ops {
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int type;
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/* Generic bmap operators */
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errcode_t (*new_bmap)(ext2_filsys fs, ext2fs_generic_bitmap_64 bmap);
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void (*free_bmap)(ext2fs_generic_bitmap_64 bitmap);
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errcode_t (*copy_bmap)(ext2fs_generic_bitmap_64 src,
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ext2fs_generic_bitmap_64 dest);
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errcode_t (*resize_bmap)(ext2fs_generic_bitmap_64 bitmap,
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__u64 new_end,
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__u64 new_real_end);
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/* bit set/test operators */
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int (*mark_bmap)(ext2fs_generic_bitmap_64 bitmap, __u64 arg);
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int (*unmark_bmap)(ext2fs_generic_bitmap_64 bitmap, __u64 arg);
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int (*test_bmap)(ext2fs_generic_bitmap_64 bitmap, __u64 arg);
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void (*mark_bmap_extent)(ext2fs_generic_bitmap_64 bitmap, __u64 arg,
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unsigned int num);
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void (*unmark_bmap_extent)(ext2fs_generic_bitmap_64 bitmap, __u64 arg,
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unsigned int num);
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int (*test_clear_bmap_extent)(ext2fs_generic_bitmap_64 bitmap,
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__u64 arg, unsigned int num);
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errcode_t (*set_bmap_range)(ext2fs_generic_bitmap_64 bitmap,
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__u64 start, size_t num, void *in);
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errcode_t (*get_bmap_range)(ext2fs_generic_bitmap_64 bitmap,
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__u64 start, size_t num, void *out);
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void (*clear_bmap)(ext2fs_generic_bitmap_64 bitmap);
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void (*print_stats)(ext2fs_generic_bitmap_64);
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/* Find the first zero bit between start and end, inclusive.
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* May be NULL, in which case a generic function is used. */
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errcode_t (*find_first_zero)(ext2fs_generic_bitmap_64 bitmap,
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__u64 start, __u64 end, __u64 *out);
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/* Find the first set bit between start and end, inclusive.
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* May be NULL, in which case a generic function is used. */
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errcode_t (*find_first_set)(ext2fs_generic_bitmap_64 bitmap,
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__u64 start, __u64 end, __u64 *out);
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};
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extern struct ext2_bitmap_ops ext2fs_blkmap64_bitarray;
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extern struct ext2_bitmap_ops ext2fs_blkmap64_rbtree;
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