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 "qapi-types.h"
   6 #include "qemu/hbitmap.h"
   7
   8 BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs,
   9                                           uint32_t granularity,
  10                                           const char *name,
  11                                           Error **errp);
  12 void bdrv_create_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap,
  13                                    int chunk_size);
  14 void bdrv_release_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap);
  15 int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs,
  16                                        BdrvDirtyBitmap *bitmap,
  17                                        Error **errp);
  18 BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BlockDriverState *bs,
  19                                             BdrvDirtyBitmap *bitmap,
  20                                             Error **errp);
  21 BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap(BlockDriverState *bs,
  22                                            BdrvDirtyBitmap *bitmap,
  23                                            Error **errp);
  24 BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs,
  25                                         const char *name);
  26 void bdrv_dirty_bitmap_make_anon(BdrvDirtyBitmap *bitmap);
  27 void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap);
  28 void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs);
  29 void bdrv_release_persistent_dirty_bitmaps(BlockDriverState *bs);
  30 void bdrv_remove_persistent_dirty_bitmap(BlockDriverState *bs,
  31                                          const char *name,
  32                                          Error **errp);
  33 void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
  34 void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
  35 BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs);
  36 uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs);
  37 uint32_t bdrv_dirty_bitmap_granularity(const 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 offset, int64_t bytes);
  45 void bdrv_reset_dirty_bitmap(BdrvDirtyBitmap *bitmap,
  46                              int64_t offset, int64_t bytes);
  47 BdrvDirtyBitmapIter *bdrv_dirty_meta_iter_new(BdrvDirtyBitmap *bitmap);
  48 BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap);
  49 void bdrv_dirty_iter_free(BdrvDirtyBitmapIter *iter);
  50
  51 uint64_t bdrv_dirty_bitmap_serialization_size(const BdrvDirtyBitmap *bitmap,
  52                                               uint64_t offset, uint64_t bytes);
  53 uint64_t bdrv_dirty_bitmap_serialization_align(const BdrvDirtyBitmap *bitmap);
  54 void bdrv_dirty_bitmap_serialize_part(const BdrvDirtyBitmap *bitmap,
  55                                       uint8_t *buf, uint64_t offset,
  56                                       uint64_t bytes);
  57 void bdrv_dirty_bitmap_deserialize_part(BdrvDirtyBitmap *bitmap,
  58                                         uint8_t *buf, uint64_t offset,
  59                                         uint64_t bytes, bool finish);
  60 void bdrv_dirty_bitmap_deserialize_zeroes(BdrvDirtyBitmap *bitmap,
  61                                           uint64_t offset, uint64_t bytes,
  62                                           bool finish);
  63 void bdrv_dirty_bitmap_deserialize_ones(BdrvDirtyBitmap *bitmap,
  64                                         uint64_t offset, uint64_t bytes,
  65                                         bool finish);
  66 void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap);
  67
  68 void bdrv_dirty_bitmap_set_readonly(BdrvDirtyBitmap *bitmap, bool value);
  69 void bdrv_dirty_bitmap_set_persistance(BdrvDirtyBitmap *bitmap,
  70                                        bool persistent);
  71
  72 /* Functions that require manual locking.  */
  73 void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap *bitmap);
  74 void bdrv_dirty_bitmap_unlock(BdrvDirtyBitmap *bitmap);
  75 bool bdrv_get_dirty_locked(BlockDriverState *bs, BdrvDirtyBitmap *bitmap,
  76                            int64_t offset);
  77 void bdrv_set_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap,
  78                                   int64_t offset, int64_t bytes);
  79 void bdrv_reset_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap,
  80                                     int64_t offset, int64_t bytes);
  81 int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter *iter);
  82 void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *hbi, int64_t offset);
  83 int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap);
  84 int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap);
  85 void bdrv_dirty_bitmap_truncate(BlockDriverState *bs, int64_t bytes);
  86 bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap);
  87 bool bdrv_has_readonly_bitmaps(BlockDriverState *bs);
  88 bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap);
  89 bool bdrv_dirty_bitmap_get_persistance(BdrvDirtyBitmap *bitmap);
  90 bool bdrv_has_changed_persistent_bitmaps(BlockDriverState *bs);
  91 BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BlockDriverState *bs,
  92                                         BdrvDirtyBitmap *bitmap);
  93 char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp);
  94 int64_t bdrv_dirty_bitmap_next_zero(BdrvDirtyBitmap *bitmap, uint64_t start);
  95
  96 #endif