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Diffstat (limited to 'block.c')
-rw-r--r--block.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/block.c b/block.c
index ea4956d6c7..b383b721d2 100644
--- a/block.c
+++ b/block.c
@@ -978,11 +978,12 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp)
} else if (bs->backing_file[0] == '\0' && qdict_size(options) == 0) {
QDECREF(options);
return 0;
+ } else {
+ bdrv_get_full_backing_filename(bs, backing_filename,
+ sizeof(backing_filename));
}
bs->backing_hd = bdrv_new("");
- bdrv_get_full_backing_filename(bs, backing_filename,
- sizeof(backing_filename));
if (bs->backing_format[0] != '\0') {
back_drv = bdrv_find_format(bs->backing_format);
@@ -994,6 +995,8 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp)
ret = bdrv_open(bs->backing_hd,
*backing_filename ? backing_filename : NULL, options,
back_flags, back_drv, &local_err);
+ pstrcpy(bs->backing_file, sizeof(bs->backing_file),
+ bs->backing_hd->file->filename);
if (ret < 0) {
bdrv_unref(bs->backing_hd);
bs->backing_hd = NULL;