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_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
  29 void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
  30 BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs);
  31 uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs);
  32 uint32_t bdrv_dirty_bitmap_granularity(const BdrvDirtyBitmap *bitmap);
  33 uint32_t bdrv_dirty_bitmap_meta_granularity(BdrvDirtyBitmap *bitmap);
  34 bool bdrv_dirty_bitmap_enabled(BdrvDirtyBitmap *bitmap);
  35 bool bdrv_dirty_bitmap_frozen(BdrvDirtyBitmap *bitmap);
  36 const char *bdrv_dirty_bitmap_name(const BdrvDirtyBitmap *bitmap);
  37 int64_t bdrv_dirty_bitmap_size(const BdrvDirtyBitmap *bitmap);
  38 DirtyBitmapStatus bdrv_dirty_bitmap_status(BdrvDirtyBitmap *bitmap);
  39 void bdrv_set_dirty_bitmap(BdrvDirtyBitmap *bitmap,
  40                            int64_t cur_sector, int64_t nr_sectors);
  41 void bdrv_reset_dirty_bitmap(BdrvDirtyBitmap *bitmap,
  42                              int64_t cur_sector, int64_t nr_sectors);
  43 int bdrv_dirty_bitmap_get_meta(BlockDriverState *bs,
  44                                BdrvDirtyBitmap *bitmap, int64_t sector,
  45                                int nb_sectors);
  46 int bdrv_dirty_bitmap_get_meta_locked(BlockDriverState *bs,
  47                                       BdrvDirtyBitmap *bitmap, int64_t sector,
  48                                       int nb_sectors);
  49 void bdrv_dirty_bitmap_reset_meta(BlockDriverState *bs,
  50                                   BdrvDirtyBitmap *bitmap, int64_t sector,
  51                                   int nb_sectors);
  52 BdrvDirtyBitmapIter *bdrv_dirty_meta_iter_new(BdrvDirtyBitmap *bitmap);
  53 BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap,
  54                                          uint64_t first_sector);
  55 void bdrv_dirty_iter_free(BdrvDirtyBitmapIter *iter);
  56
  57 uint64_t bdrv_dirty_bitmap_serialization_size(const BdrvDirtyBitmap *bitmap,
  58                                               uint64_t start, uint64_t count);
  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 start,
  62                                       uint64_t count);
  63 void bdrv_dirty_bitmap_deserialize_part(BdrvDirtyBitmap *bitmap,
  64                                         uint8_t *buf, uint64_t start,
  65                                         uint64_t count, bool finish);
  66 void bdrv_dirty_bitmap_deserialize_zeroes(BdrvDirtyBitmap *bitmap,
  67                                           uint64_t start, uint64_t count,
  68                                           bool finish);
  69 void bdrv_dirty_bitmap_deserialize_ones(BdrvDirtyBitmap *bitmap,
  70                                         uint64_t start, uint64_t count,
  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
  76 /* Functions that require manual locking.  */
  77 void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap *bitmap);
  78 void bdrv_dirty_bitmap_unlock(BdrvDirtyBitmap *bitmap);
  79 int bdrv_get_dirty_locked(BlockDriverState *bs, BdrvDirtyBitmap *bitmap,
  80                           int64_t sector);
  81 void bdrv_set_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap,
  82                                   int64_t cur_sector, int64_t nr_sectors);
  83 void bdrv_reset_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap,
  84                                     int64_t cur_sector, int64_t nr_sectors);
  85 int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter *iter);
  86 void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *hbi, int64_t sector_num);
  87 int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap);
  88 int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap);
  89 void bdrv_dirty_bitmap_truncate(BlockDriverState *bs);
  90 bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap);
  91 bool bdrv_has_readonly_bitmaps(BlockDriverState *bs);
  92
  93 #endif