commit 756e6736a12a46330d9532d5f861ba15b38886d8
author Kevin Wolf <kwolf@redhat.com> Tue Jan 12 12:55:17 2010 +0100
committer Anthony Liguori <aliguori@us.ibm.com> Wed Jan 13 17:14:15 2010 -0600
tree b8b36409fef483b90fe9a79384aab38e3ea07dd2
parent b783e409bf17b92f4af8dc5d6bd040d0092f33e0

block: Add bdrv_change_backing_file

Introduce the functions needed to change the backing file of an image. The
function is implemented for qcow2.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

block_int.h

diff --git a/block_int.h b/block_int.h
index 9a3b2e0..a0ebd90 100644
--- a/block_int.h
+++ b/block_int.h
@@ -98,6 +98,9 @@
     int (*bdrv_load_vmstate)(BlockDriverState *bs, uint8_t *buf,
                              int64_t pos, int size);
 
+    int (*bdrv_change_backing_file)(BlockDriverState *bs,
+        const char *backing_file, const char *backing_fmt);
+
     /* removable device specific */
     int (*bdrv_is_inserted)(BlockDriverState *bs);
     int (*bdrv_media_changed)(BlockDriverState *bs);