1 files changed, 4 insertions, 0 deletions
diff --git a/block.h b/block.h
index b1095d8599..8c9b4245d4 100644
--- a/block.h
+++ b/block.h
@@ -203,6 +203,10 @@ int bdrv_commit_all(void);
 int bdrv_change_backing_file(BlockDriverState *bs,
     const char *backing_file, const char *backing_fmt);
 void bdrv_register(BlockDriver *bdrv);
+int bdrv_drop_intermediate(BlockDriverState *active, BlockDriverState *top,
+                           BlockDriverState *base);
+BlockDriverState *bdrv_find_overlay(BlockDriverState *active,
+                                    BlockDriverState *bs);
 
 
 typedef struct BdrvCheckResult {