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block: new bdrv_reopen_bitmaps_rw interface

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Add format driver handler, which should mark loaded read-only
bitmaps as 'IN_USE' in the image and unset read_only field in
corresponding BdrvDirtyBitmap's.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170628120530.31251-14-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2017-06-28 15:05:13 +03:00 • committed by Max Reitz
parent 50bf65bab6
commit cb9ff6c25a
2 changed files with 26 additions and 0 deletions
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7
include/block/block_int.h
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@ -381,6 +381,13 @@ struct BlockDriver {
uint64_t parent_perm, uint64_t parent_shared,
uint64_t *nperm, uint64_t *nshared);
/**
* Bitmaps should be marked as 'IN_USE' in the image on reopening image
* as rw. This handler should realize it. It also should unset readonly
* field of BlockDirtyBitmap's in case of success.
*/
int (*bdrv_reopen_bitmaps_rw)(BlockDriverState *bs, Error **errp);
QLIST_ENTRY(BlockDriver) list;
};