return NULL;
}
-static BlockDriver *find_image_format(const char *filename)
+static int find_image_format(const char *filename, BlockDriver **pdrv)
{
int ret, score, score_max;
BlockDriver *drv1, *drv;
BlockDriverState *bs;
ret = bdrv_file_open(&bs, filename, 0);
- if (ret < 0)
- return NULL;
+ if (ret < 0) {
+ *pdrv = NULL;
+ return ret;
+ }
/* Return the raw BlockDriver * to scsi-generic devices or empty drives */
if (bs->sg || !bdrv_is_inserted(bs)) {
bdrv_delete(bs);
- return bdrv_find_format("raw");
+ drv = bdrv_find_format("raw");
+ if (!drv) {
+ ret = -ENOENT;
+ }
+ *pdrv = drv;
+ return ret;
}
ret = bdrv_pread(bs, 0, buf, sizeof(buf));
bdrv_delete(bs);
if (ret < 0) {
- return NULL;
+ *pdrv = NULL;
+ return ret;
}
score_max = 0;
}
}
}
- return drv;
+ if (!drv) {
+ ret = -ENOENT;
+ }
+ *pdrv = drv;
+ return ret;
}
/**
BlockDriver *drv)
{
int ret;
+ int probed = 0;
if (flags & BDRV_O_SNAPSHOT) {
BlockDriverState *bs1;
/* Find the right image format driver */
if (!drv) {
- drv = find_image_format(filename);
+ ret = find_image_format(filename, &drv);
+ probed = 1;
}
if (!drv) {
- ret = -ENOENT;
goto unlink_and_fail;
}
goto unlink_and_fail;
}
+ bs->probed = probed;
+
/* If there is a backing file, use it */
if ((flags & BDRV_O_NO_BACKING) == 0 && bs->backing_file[0] != '\0') {
char backing_filename[PATH_MAX];
}
memset(res, 0, sizeof(*res));
- res->corruptions = bs->drv->bdrv_check(bs);
- return res->corruptions < 0 ? res->corruptions : 0;
+ return bs->drv->bdrv_check(bs, res);
}
/* commit COW file into the raw image */
return 1;
}
+int bdrv_is_snapshot(BlockDriverState *bs)
+{
+ return !!(bs->open_flags & BDRV_O_SNAPSHOT);
+}
+
BlockDriverState *bdrv_snapshots(void)
{
BlockDriverState *bs;