qcow2: Bring synchronous read/write back to life

[qemu.git] / block / qcow2.h

diff --git a/block/qcow2.h b/block/qcow2.h
index 965a2f45c1ad0568709711f403537c1ba2cf9a68..b41aa63409f71dfe7f77f1ad667d95a6f4b90ba2 100644 (file)
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -202,6 +202,9 @@ uint64_t qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs,
 int qcow2_alloc_cluster_link_l2(BlockDriverState *bs, uint64_t cluster_offset,
     QCowL2Meta *m);
 
+int qcow2_read(BlockDriverState *bs, int64_t sector_num, uint8_t *buf,
+    int nb_sectors);
+
 /* qcow2-snapshot.c functions */
 int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info);
 int qcow2_snapshot_goto(BlockDriverState *bs, const char *snapshot_id);