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 DirtyBitmapStatus bdrv_dirty_bitmap_status(BdrvDirtyBitmap *bitmap); 50 void bdrv_set_dirty_bitmap(BdrvDirtyBitmap *bitmap, 51 int64_t offset, int64_t bytes); 52 void bdrv_reset_dirty_bitmap(BdrvDirtyBitmap *bitmap, 53 int64_t offset, int64_t bytes); 54 BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap); 55 void bdrv_dirty_iter_free(BdrvDirtyBitmapIter *iter); 56 57 uint64_t bdrv_dirty_bitmap_serialization_size(const BdrvDirtyBitmap *bitmap, 58 uint64_t offset, uint64_t bytes); 59 uint64_t bdrv_dirty_bitmap_serialization_align(const BdrvDirtyBitmap *bitmap); 60 void bdrv_dirty_bitmap_serialize_part(const BdrvDirtyBitmap *bitmap, 61 uint8_t *buf, uint64_t offset, 62 uint64_t bytes); 63 void bdrv_dirty_bitmap_deserialize_part(BdrvDirtyBitmap *bitmap, 64 uint8_t *buf, uint64_t offset, 65 uint64_t bytes, bool finish); 66 void bdrv_dirty_bitmap_deserialize_zeroes(BdrvDirtyBitmap *bitmap, 67 uint64_t offset, uint64_t bytes, 68 bool finish); 69 void bdrv_dirty_bitmap_deserialize_ones(BdrvDirtyBitmap *bitmap, 70 uint64_t offset, uint64_t bytes, 71 bool finish); 72 void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap); 73 74 void bdrv_dirty_bitmap_set_readonly(BdrvDirtyBitmap *bitmap, bool value); 75 void bdrv_dirty_bitmap_set_persistence(BdrvDirtyBitmap *bitmap, 76 bool persistent); 77 void bdrv_dirty_bitmap_set_inconsistent(BdrvDirtyBitmap *bitmap); 78 void bdrv_dirty_bitmap_set_busy(BdrvDirtyBitmap *bitmap, bool busy); 79 void bdrv_merge_dirty_bitmap(BdrvDirtyBitmap *dest, const BdrvDirtyBitmap *src, 80 HBitmap **backup, Error **errp); 81 void bdrv_dirty_bitmap_skip_store(BdrvDirtyBitmap *bitmap, bool skip); 82 bool bdrv_dirty_bitmap_get(BdrvDirtyBitmap *bitmap, int64_t offset); 83 84 /* Functions that require manual locking. */ 85 void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap *bitmap); 86 void bdrv_dirty_bitmap_unlock(BdrvDirtyBitmap *bitmap); 87 bool bdrv_dirty_bitmap_get_locked(BdrvDirtyBitmap *bitmap, int64_t offset); 88 void bdrv_set_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap, 89 int64_t offset, int64_t bytes); 90 void bdrv_reset_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap, 91 int64_t offset, int64_t bytes); 92 int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter *iter); 93 void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *hbi, int64_t offset); 94 int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap); 95 void bdrv_dirty_bitmap_truncate(BlockDriverState *bs, int64_t bytes); 96 bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap); 97 bool bdrv_has_readonly_bitmaps(BlockDriverState *bs); 98 bool bdrv_has_named_bitmaps(BlockDriverState *bs); 99 bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap); 100 bool bdrv_dirty_bitmap_get_persistence(BdrvDirtyBitmap *bitmap); 101 bool bdrv_dirty_bitmap_inconsistent(const BdrvDirtyBitmap *bitmap); 102 103 BdrvDirtyBitmap *bdrv_dirty_bitmap_first(BlockDriverState *bs); 104 BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BdrvDirtyBitmap *bitmap); 105 #define FOR_EACH_DIRTY_BITMAP(bs, bitmap) \ 106 for (bitmap = bdrv_dirty_bitmap_first(bs); bitmap; \ 107 bitmap = bdrv_dirty_bitmap_next(bitmap)) 108 109 char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp); 110 int64_t bdrv_dirty_bitmap_next_dirty(BdrvDirtyBitmap *bitmap, int64_t offset, 111 int64_t bytes); 112 int64_t bdrv_dirty_bitmap_next_zero(BdrvDirtyBitmap *bitmap, int64_t offset, 113 int64_t bytes); 114 bool bdrv_dirty_bitmap_next_dirty_area(BdrvDirtyBitmap *bitmap, 115 int64_t start, int64_t end, int64_t max_dirty_count, 116 int64_t *dirty_start, int64_t *dirty_count); 117 BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap, 118 Error **errp); 119 120 #endif 121