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