1 #ifndef BLOCK_DIRTY_BITMAP_H 2 #define BLOCK_DIRTY_BITMAP_H 3 4 #include "qapi/qapi-types-block-core.h" 5 #include "qemu/hbitmap.h" 6 7 typedef enum BitmapCheckFlags { 8 BDRV_BITMAP_BUSY = 1, 9 BDRV_BITMAP_RO = 2, 10 BDRV_BITMAP_INCONSISTENT = 4, 11 } BitmapCheckFlags; 12 13 #define BDRV_BITMAP_DEFAULT (BDRV_BITMAP_BUSY | BDRV_BITMAP_RO | \ 14 BDRV_BITMAP_INCONSISTENT) 15 #define BDRV_BITMAP_ALLOW_RO (BDRV_BITMAP_BUSY | BDRV_BITMAP_INCONSISTENT) 16 17 #define BDRV_BITMAP_MAX_NAME_SIZE 1023 18 19 bool bdrv_supports_persistent_dirty_bitmap(BlockDriverState *bs); 20 BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, 21 uint32_t granularity, 22 const char *name, 23 Error **errp); 24 int bdrv_dirty_bitmap_create_successor(BdrvDirtyBitmap *bitmap, 25 Error **errp); 26 BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BdrvDirtyBitmap *bitmap, 27 Error **errp); 28 BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap(BdrvDirtyBitmap *bitmap, 29 Error **errp); 30 void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap); 31 BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs, 32 const char *name); 33 int bdrv_dirty_bitmap_check(const BdrvDirtyBitmap *bitmap, uint32_t flags, 34 Error **errp); 35 void bdrv_release_dirty_bitmap(BdrvDirtyBitmap *bitmap); 36 void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs); 37 int bdrv_remove_persistent_dirty_bitmap(BlockDriverState *bs, const char *name, 38 Error **errp); 39 void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap); 40 void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap); 41 void bdrv_enable_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap); 42 BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs); 43 uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs); 44 uint32_t bdrv_dirty_bitmap_granularity(const BdrvDirtyBitmap *bitmap); 45 bool bdrv_dirty_bitmap_enabled(BdrvDirtyBitmap *bitmap); 46 bool bdrv_dirty_bitmap_has_successor(BdrvDirtyBitmap *bitmap); 47 const char *bdrv_dirty_bitmap_name(const BdrvDirtyBitmap *bitmap); 48 int64_t bdrv_dirty_bitmap_size(const BdrvDirtyBitmap *bitmap); 49 void bdrv_set_dirty_bitmap(BdrvDirtyBitmap *bitmap, 50 int64_t offset, int64_t bytes); 51 void bdrv_reset_dirty_bitmap(BdrvDirtyBitmap *bitmap, 52 int64_t offset, int64_t bytes); 53 BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap); 54 void bdrv_dirty_iter_free(BdrvDirtyBitmapIter *iter); 55 56 uint64_t bdrv_dirty_bitmap_serialization_size(const BdrvDirtyBitmap *bitmap, 57 uint64_t offset, uint64_t bytes); 58 uint64_t bdrv_dirty_bitmap_serialization_align(const BdrvDirtyBitmap *bitmap); 59 uint64_t bdrv_dirty_bitmap_serialization_coverage(int serialized_chunk_size, 60 const BdrvDirtyBitmap *bitmap); 61 void bdrv_dirty_bitmap_serialize_part(const BdrvDirtyBitmap *bitmap, 62 uint8_t *buf, uint64_t offset, 63 uint64_t bytes); 64 void bdrv_dirty_bitmap_deserialize_part(BdrvDirtyBitmap *bitmap, 65 uint8_t *buf, uint64_t offset, 66 uint64_t bytes, bool finish); 67 void bdrv_dirty_bitmap_deserialize_zeroes(BdrvDirtyBitmap *bitmap, 68 uint64_t offset, uint64_t bytes, 69 bool finish); 70 void bdrv_dirty_bitmap_deserialize_ones(BdrvDirtyBitmap *bitmap, 71 uint64_t offset, uint64_t bytes, 72 bool finish); 73 void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap); 74 75 void bdrv_dirty_bitmap_set_readonly(BdrvDirtyBitmap *bitmap, bool value); 76 void bdrv_dirty_bitmap_set_persistence(BdrvDirtyBitmap *bitmap, 77 bool persistent); 78 void bdrv_dirty_bitmap_set_inconsistent(BdrvDirtyBitmap *bitmap); 79 void bdrv_dirty_bitmap_set_busy(BdrvDirtyBitmap *bitmap, bool busy); 80 void bdrv_merge_dirty_bitmap(BdrvDirtyBitmap *dest, const BdrvDirtyBitmap *src, 81 HBitmap **backup, Error **errp); 82 void bdrv_dirty_bitmap_skip_store(BdrvDirtyBitmap *bitmap, bool skip); 83 bool bdrv_dirty_bitmap_get(BdrvDirtyBitmap *bitmap, int64_t offset); 84 85 /* Functions that require manual locking. */ 86 void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap *bitmap); 87 void bdrv_dirty_bitmap_unlock(BdrvDirtyBitmap *bitmap); 88 bool bdrv_dirty_bitmap_get_locked(BdrvDirtyBitmap *bitmap, int64_t offset); 89 void bdrv_set_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap, 90 int64_t offset, int64_t bytes); 91 void bdrv_reset_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap, 92 int64_t offset, int64_t bytes); 93 int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter *iter); 94 void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *hbi, int64_t offset); 95 int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap); 96 void bdrv_dirty_bitmap_truncate(BlockDriverState *bs, int64_t bytes); 97 bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap); 98 bool bdrv_has_readonly_bitmaps(BlockDriverState *bs); 99 bool bdrv_has_named_bitmaps(BlockDriverState *bs); 100 bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap); 101 bool bdrv_dirty_bitmap_get_persistence(BdrvDirtyBitmap *bitmap); 102 bool bdrv_dirty_bitmap_inconsistent(const BdrvDirtyBitmap *bitmap); 103 104 BdrvDirtyBitmap *bdrv_dirty_bitmap_first(BlockDriverState *bs); 105 BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BdrvDirtyBitmap *bitmap); 106 #define FOR_EACH_DIRTY_BITMAP(bs, bitmap) \ 107 for (bitmap = bdrv_dirty_bitmap_first(bs); bitmap; \ 108 bitmap = bdrv_dirty_bitmap_next(bitmap)) 109 110 char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp); 111 int64_t bdrv_dirty_bitmap_next_dirty(BdrvDirtyBitmap *bitmap, int64_t offset, 112 int64_t bytes); 113 int64_t bdrv_dirty_bitmap_next_zero(BdrvDirtyBitmap *bitmap, int64_t offset, 114 int64_t bytes); 115 bool bdrv_dirty_bitmap_next_dirty_area(BdrvDirtyBitmap *bitmap, 116 int64_t start, int64_t end, int64_t max_dirty_count, 117 int64_t *dirty_start, int64_t *dirty_count); 118 BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap, 119 Error **errp); 120 121 #endif 122