diff mbox

[5/6] mirror: Implement .bdrv_refresh_filename

Message ID 1489059542-14232-6-git-send-email-kwolf@redhat.com
State New
Headers show

Commit Message

Kevin Wolf March 9, 2017, 11:39 a.m. UTC 
We want query-block to return the right filename, even if a mirror job
put a bdrv_mirror_top on top of the actual image format driver. Let
bdrv_mirror_top.bdrv_refresh_filename get the filename from its backing
file.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/mirror.c | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox

Patch

diff --git a/block/mirror.c b/block/mirror.c
index a5d30ee..4f3a5cb 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -12,6 +12,7 @@ 
  */
 
 #include "qemu/osdep.h"
+#include "qemu/cutils.h"
 #include "trace.h"
 #include "block/blockjob_int.h"
 #include "block/block_int.h"
@@ -1060,6 +1061,13 @@  static int coroutine_fn bdrv_mirror_top_pdiscard(BlockDriverState *bs,
     return bdrv_co_pdiscard(bs->backing->bs, offset, count);
 }
 
+static void bdrv_mirror_top_refresh_filename(BlockDriverState *bs, QDict *opts)
+{
+    bdrv_refresh_filename(bs->backing->bs);
+    pstrcpy(bs->exact_filename, sizeof(bs->exact_filename),
+            bs->backing->bs->filename);
+}
+
 static void bdrv_mirror_top_close(BlockDriverState *bs)
 {
 }
@@ -1088,6 +1096,7 @@  static BlockDriver bdrv_mirror_top = {
     .bdrv_co_pdiscard           = bdrv_mirror_top_pdiscard,
     .bdrv_co_flush              = bdrv_mirror_top_flush,
     .bdrv_co_get_block_status   = bdrv_mirror_top_get_block_status,
+    .bdrv_refresh_filename      = bdrv_mirror_top_refresh_filename,
     .bdrv_close                 = bdrv_mirror_top_close,
     .bdrv_child_perm            = bdrv_mirror_top_child_perm,
 };