197     BlockDriver *drv = bs->drv;  in bdrv_can_snapshot()  local
201     if (!drv || !bdrv_is_inserted(bs) || !bdrv_is_writable(bs)) {  in bdrv_can_snapshot()
205     if (!drv->bdrv_snapshot_create) {  in bdrv_can_snapshot()
219     BlockDriver *drv = bs->drv;  in bdrv_snapshot_create()  local
224     if (!drv) {  in bdrv_snapshot_create()
227     if (drv->bdrv_snapshot_create) {  in bdrv_snapshot_create()
228         return drv->bdrv_snapshot_create(bs, sn_info);  in bdrv_snapshot_create()
240     BlockDriver *drv = bs->drv;  in bdrv_snapshot_goto()  local
246     if (!drv) {  in bdrv_snapshot_goto()
256     if (drv->bdrv_snapshot_goto) {  in bdrv_snapshot_goto()
257         ret = drv->bdrv_snapshot_goto(bs, snapshot_id);  in bdrv_snapshot_goto()
289         if (drv->bdrv_close) {  in bdrv_snapshot_goto()
290             drv->bdrv_close(bs);  in bdrv_snapshot_goto()
299         open_ret = drv->bdrv_open(bs, options, bs->open_flags, &local_err);  in bdrv_snapshot_goto()
303             bs->drv = NULL;  in bdrv_snapshot_goto()
354     BlockDriver *drv = bs->drv;  in bdrv_snapshot_delete()  local
360     if (!drv) {  in bdrv_snapshot_delete()
373     if (drv->bdrv_snapshot_delete) {  in bdrv_snapshot_delete()
374         ret = drv->bdrv_snapshot_delete(bs, snapshot_id, name, errp);  in bdrv_snapshot_delete()
380                    drv->format_name, bdrv_get_device_name(bs));  in bdrv_snapshot_delete()
394     BlockDriver *drv = bs->drv;  in bdrv_snapshot_list()  local
397     if (!drv) {  in bdrv_snapshot_list()
400     if (drv->bdrv_snapshot_list) {  in bdrv_snapshot_list()
401         return drv->bdrv_snapshot_list(bs, psn_info);  in bdrv_snapshot_list()
434     BlockDriver *drv = bs->drv;  in bdrv_snapshot_load_tmp()  local
439     if (!drv) {  in bdrv_snapshot_load_tmp()
452     if (drv->bdrv_snapshot_load_tmp) {  in bdrv_snapshot_load_tmp()
453         return drv->bdrv_snapshot_load_tmp(bs, snapshot_id, name, errp);  in bdrv_snapshot_load_tmp()
457                drv->format_name, bdrv_get_device_name(bs));  in bdrv_snapshot_load_tmp()