block: bdrv_has_zero_init
This fixes the problem that qemu-img's use of no_zero_init only considered the
no_zero_init flag of the format driver, but not of the underlying protocols.
Between the raw/file split and this fix, converting to host devices is broken.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/block.h b/block.h
index f58edf1..f87d24e 100644
--- a/block.h
+++ b/block.h
@@ -122,6 +122,7 @@
void bdrv_flush(BlockDriverState *bs);
void bdrv_flush_all(void);
+int bdrv_has_zero_init(BlockDriverState *bs);
int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
int *pnum);
