include/block/dirty-bitmap.h

   1 #ifndef BLOCK_DIRTY_BITMAP_H
   2 #define BLOCK_DIRTY_BITMAP_H
   3
   4 #include "qemu-common.h"
   5 #include "qemu/hbitmap.h"
   6
   7 BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs,
   8                                           uint32_t granularity,
   9                                           const char *name,
  10                                           Error **errp);
  11 void bdrv_create_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap,
  12                                    int chunk_size);
  13 void bdrv_release_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap);
  14 int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs,
  15                                        BdrvDirtyBitmap *bitmap,
  16                                        Error **errp);
  17 BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BlockDriverState *bs,
  18                                             BdrvDirtyBitmap *bitmap,
  19                                             Error **errp);
  20 BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap(BlockDriverState *bs,
  21                                            BdrvDirtyBitmap *bitmap,
  22                                            Error **errp);
  23 BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs,
  24                                         const char *name);
  25 void bdrv_dirty_bitmap_make_anon(BdrvDirtyBitmap *bitmap);
  26 void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap);
  27 void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs);
  28 void bdrv_release_persistent_dirty_bitmaps(BlockDriverState *bs);
  29 void bdrv_remove_persistent_dirty_bitmap(BlockDriverState *bs,
  30                                          const char *name,
  31                                          Error **errp);
  32 void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
  33 void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
  34 BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs);
  35 uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs);
  36 uint32_t bdrv_dirty_bitmap_granularity(const BdrvDirtyBitmap *bitmap);
  37 uint32_t bdrv_dirty_bitmap_meta_granularity(BdrvDirtyBitmap *bitmap);
  38 bool bdrv_dirty_bitmap_enabled(BdrvDirtyBitmap *bitmap);
  39 bool bdrv_dirty_bitmap_frozen(BdrvDirtyBitmap *bitmap);
  40 const char *bdrv_dirty_bitmap_name(const BdrvDirtyBitmap *bitmap);
  41 int64_t bdrv_dirty_bitmap_size(const BdrvDirtyBitmap *bitmap);
  42 DirtyBitmapStatus bdrv_dirty_bitmap_status(BdrvDirtyBitmap *bitmap);
  43 void bdrv_set_dirty_bitmap(BdrvDirtyBitmap *bitmap,
  44                            int64_t cur_sector, int64_t nr_sectors);
  45 void bdrv_reset_dirty_bitmap(BdrvDirtyBitmap *bitmap,
  46                              int64_t cur_sector, int64_t nr_sectors);
  47 int bdrv_dirty_bitmap_get_meta(BlockDriverState *bs,
  48                                BdrvDirtyBitmap *bitmap, int64_t sector,
  49                                int nb_sectors);
  50 int bdrv_dirty_bitmap_get_meta_locked(BlockDriverState *bs,
  51                                       BdrvDirtyBitmap *bitmap, int64_t sector,
  52                                       int nb_sectors);
  53 void bdrv_dirty_bitmap_reset_meta(BlockDriverState *bs,
  54                                   BdrvDirtyBitmap *bitmap, int64_t sector,
  55                                   int nb_sectors);
  56 BdrvDirtyBitmapIter *bdrv_dirty_meta_iter_new(BdrvDirtyBitmap *bitmap);
  57 BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap,
  58                                          uint64_t first_sector);
  59 void bdrv_dirty_iter_free(BdrvDirtyBitmapIter *iter);
  60
  61 uint64_t bdrv_dirty_bitmap_serialization_size(const BdrvDirtyBitmap *bitmap,
  62                                               uint64_t start, uint64_t count);
  63 uint64_t bdrv_dirty_bitmap_serialization_align(const BdrvDirtyBitmap *bitmap);
  64 void bdrv_dirty_bitmap_serialize_part(const BdrvDirtyBitmap *bitmap,
  65                                       uint8_t *buf, uint64_t start,
  66                                       uint64_t count);
  67 void bdrv_dirty_bitmap_deserialize_part(BdrvDirtyBitmap *bitmap,
  68                                         uint8_t *buf, uint64_t start,
  69                                         uint64_t count, bool finish);
  70 void bdrv_dirty_bitmap_deserialize_zeroes(BdrvDirtyBitmap *bitmap,
  71                                           uint64_t start, uint64_t count,
  72                                           bool finish);
  73 void bdrv_dirty_bitmap_deserialize_ones(BdrvDirtyBitmap *bitmap,
  74                                         uint64_t start, uint64_t count,
  75                                         bool finish);
  76 void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap);
  77
  78 void bdrv_dirty_bitmap_set_readonly(BdrvDirtyBitmap *bitmap, bool value);
  79 void bdrv_dirty_bitmap_set_autoload(BdrvDirtyBitmap *bitmap, bool autoload);
  80 void bdrv_dirty_bitmap_set_persistance(BdrvDirtyBitmap *bitmap,
  81                                        bool persistent);
  82
  83 /* Functions that require manual locking.  */
  84 void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap *bitmap);
  85 void bdrv_dirty_bitmap_unlock(BdrvDirtyBitmap *bitmap);
  86 int bdrv_get_dirty_locked(BlockDriverState *bs, BdrvDirtyBitmap *bitmap,
  87                           int64_t sector);
  88 void bdrv_set_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap,
  89                                   int64_t cur_sector, int64_t nr_sectors);
  90 void bdrv_reset_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap,
  91                                     int64_t cur_sector, int64_t nr_sectors);
  92 int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter *iter);
  93 void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *hbi, int64_t sector_num);
  94 int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap);
  95 int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap);
  96 void bdrv_dirty_bitmap_truncate(BlockDriverState *bs);
  97 bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap);
  98 bool bdrv_has_readonly_bitmaps(BlockDriverState *bs);
  99 bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap);
 100 bool bdrv_dirty_bitmap_get_persistance(BdrvDirtyBitmap *bitmap);
 101 bool bdrv_has_changed_persistent_bitmaps(BlockDriverState *bs);
 102 BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BlockDriverState *bs,
 103                                         BdrvDirtyBitmap *bitmap);
 104 char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp);
 105
 106 #endif