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/qapi-types-block-core.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 void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap);
  25 BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs,
  26                                         const char *name);
  27 void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap);
  28 void bdrv_release_named_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 void bdrv_enable_dirty_bitmap_locked(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_has_successor(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 void bdrv_dirty_bitmap_set_busy(BdrvDirtyBitmap *bitmap, bool busy);
  72 void bdrv_merge_dirty_bitmap(BdrvDirtyBitmap *dest, const BdrvDirtyBitmap *src,
  73                              HBitmap **backup, Error **errp);
  74 void bdrv_dirty_bitmap_set_migration(BdrvDirtyBitmap *bitmap, bool migration);
  75
  76 /* Functions that require manual locking.  */
  77 void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap *bitmap);
  78 void bdrv_dirty_bitmap_unlock(BdrvDirtyBitmap *bitmap);
  79 bool bdrv_get_dirty_locked(BlockDriverState *bs, BdrvDirtyBitmap *bitmap,
  80                            int64_t offset);
  81 void bdrv_set_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap,
  82                                   int64_t offset, int64_t bytes);
  83 void bdrv_reset_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap,
  84                                     int64_t offset, int64_t bytes);
  85 int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter *iter);
  86 void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *hbi, int64_t offset);
  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, int64_t bytes);
  90 bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap);
  91 bool bdrv_has_readonly_bitmaps(BlockDriverState *bs);
  92 bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap);
  93 bool bdrv_dirty_bitmap_get_persistance(BdrvDirtyBitmap *bitmap);
  94 bool bdrv_dirty_bitmap_busy(BdrvDirtyBitmap *bitmap);
  95 bool bdrv_has_changed_persistent_bitmaps(BlockDriverState *bs);
  96 BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BlockDriverState *bs,
  97                                         BdrvDirtyBitmap *bitmap);
  98 char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp);
  99 int64_t bdrv_dirty_bitmap_next_zero(BdrvDirtyBitmap *bitmap, uint64_t offset,
 100                                     uint64_t bytes);
 101 bool bdrv_dirty_bitmap_next_dirty_area(BdrvDirtyBitmap *bitmap,
 102                                        uint64_t *offset, uint64_t *bytes);
 103 BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap_locked(BlockDriverState *bs,
 104                                                   BdrvDirtyBitmap *bitmap,
 105                                                   Error **errp);
 106
 107 #endif