54 int bdrv_snapshot_find(BlockDriverState *bs, QEMUSnapshotInfo *sn_info,  in bdrv_snapshot_find()  argument
63     nb_sns = bdrv_snapshot_list(bs, &sn_tab);  in bdrv_snapshot_find()
99 bool bdrv_snapshot_find_by_id_and_name(BlockDriverState *bs,  in bdrv_snapshot_find_by_id_and_name()  argument
112     nb_sns = bdrv_snapshot_list(bs, &sn_tab);  in bdrv_snapshot_find_by_id_and_name()
159 bdrv_snapshot_fallback_child(BlockDriverState *bs)  in bdrv_snapshot_fallback_child()  argument
161     BdrvChild *fallback = bdrv_primary_child(bs);  in bdrv_snapshot_fallback_child()
177     QLIST_FOREACH(child, &bs->children, next) {  in bdrv_snapshot_fallback_child()
190 bdrv_snapshot_fallback(BlockDriverState *bs)  in bdrv_snapshot_fallback()  argument
193     return child_bs(bdrv_snapshot_fallback_child(bs));  in bdrv_snapshot_fallback()
196 int bdrv_can_snapshot(BlockDriverState *bs)  in bdrv_can_snapshot()  argument
198     BlockDriver *drv = bs->drv;  in bdrv_can_snapshot()
202     if (!drv || !bdrv_is_inserted(bs) || !bdrv_is_writable(bs)) {  in bdrv_can_snapshot()
207         BlockDriverState *fallback_bs = bdrv_snapshot_fallback(bs);  in bdrv_can_snapshot()
217 int bdrv_snapshot_create(BlockDriverState *bs,  in bdrv_snapshot_create()  argument
220     BlockDriver *drv = bs->drv;  in bdrv_snapshot_create()
221     BlockDriverState *fallback_bs = bdrv_snapshot_fallback(bs);  in bdrv_snapshot_create()
229         return drv->bdrv_snapshot_create(bs, sn_info);  in bdrv_snapshot_create()
237 int bdrv_snapshot_goto(BlockDriverState *bs,  in bdrv_snapshot_goto()  argument
241     BlockDriver *drv = bs->drv;  in bdrv_snapshot_goto()
252     if (!QLIST_EMPTY(&bs->dirty_bitmaps)) {  in bdrv_snapshot_goto()
258         ret = drv->bdrv_snapshot_goto(bs, snapshot_id);  in bdrv_snapshot_goto()
266     fallback = bdrv_snapshot_fallback_child(bs);  in bdrv_snapshot_goto()
273         BlockDriverState *fallback_bs = fallback->bs;  in bdrv_snapshot_goto()
276         options = qdict_clone_shallow(bs->options);  in bdrv_snapshot_goto()
291             drv->bdrv_close(bs);  in bdrv_snapshot_goto()
296         bdrv_unref_child(bs, fallback);  in bdrv_snapshot_goto()
300         open_ret = drv->bdrv_open(bs, options, bs->open_flags, &local_err);  in bdrv_snapshot_goto()
304             bs->drv = NULL;  in bdrv_snapshot_goto()
317         assert(bdrv_primary_bs(bs) == fallback_bs);  in bdrv_snapshot_goto()
350 int bdrv_snapshot_delete(BlockDriverState *bs,  in bdrv_snapshot_delete()  argument
355     BlockDriver *drv = bs->drv;  in bdrv_snapshot_delete()
356     BlockDriverState *fallback_bs = bdrv_snapshot_fallback(bs);  in bdrv_snapshot_delete()
362         error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, bdrv_get_device_name(bs));  in bdrv_snapshot_delete()
371     bdrv_drained_begin(bs);  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()
384     bdrv_drained_end(bs);  in bdrv_snapshot_delete()
388 int bdrv_snapshot_list(BlockDriverState *bs,  in bdrv_snapshot_list()  argument
394     BlockDriver *drv = bs->drv;  in bdrv_snapshot_list()
395     BlockDriverState *fallback_bs = bdrv_snapshot_fallback(bs);  in bdrv_snapshot_list()
401         return drv->bdrv_snapshot_list(bs, psn_info);  in bdrv_snapshot_list()
429 int bdrv_snapshot_load_tmp(BlockDriverState *bs,  in bdrv_snapshot_load_tmp()  argument
434     BlockDriver *drv = bs->drv;  in bdrv_snapshot_load_tmp()
440         error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, bdrv_get_device_name(bs));  in bdrv_snapshot_load_tmp()
447     if (!bdrv_is_read_only(bs)) {  in bdrv_snapshot_load_tmp()
452         return drv->bdrv_snapshot_load_tmp(bs, snapshot_id, name, errp);  in bdrv_snapshot_load_tmp()
456                drv->format_name, bdrv_get_device_name(bs));  in bdrv_snapshot_load_tmp()
460 int bdrv_snapshot_load_tmp_by_id_or_name(BlockDriverState *bs,  in bdrv_snapshot_load_tmp_by_id_or_name()  argument
469     ret = bdrv_snapshot_load_tmp(bs, id_or_name, NULL, &local_err);  in bdrv_snapshot_load_tmp_by_id_or_name()
473         ret = bdrv_snapshot_load_tmp(bs, NULL, id_or_name, &local_err);  in bdrv_snapshot_load_tmp_by_id_or_name()
495             BlockDriverState *bs = bdrv_find_node(devices->value);  in bdrv_all_get_snapshot_devices()  local
496             if (!bs) {  in bdrv_all_get_snapshot_devices()
500             bdrvs = g_list_append(bdrvs, bs);  in bdrv_all_get_snapshot_devices()
504         BlockDriverState *bs;  in bdrv_all_get_snapshot_devices()  local
506         for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {  in bdrv_all_get_snapshot_devices()
507             bdrvs = g_list_append(bdrvs, bs);  in bdrv_all_get_snapshot_devices()
516 static bool GRAPH_RDLOCK bdrv_all_snapshots_includes_bs(BlockDriverState *bs)  in bdrv_all_snapshots_includes_bs()  argument
521     if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {  in bdrv_all_snapshots_includes_bs()
527     return bdrv_has_blk(bs) || QLIST_EMPTY(&bs->parents);  in bdrv_all_snapshots_includes_bs()
549         BlockDriverState *bs = iterbdrvs->data;  in bdrv_all_can_snapshot()  local
550         AioContext *ctx = bdrv_get_aio_context(bs);  in bdrv_all_can_snapshot()
554         if (devices || bdrv_all_snapshots_includes_bs(bs)) {  in bdrv_all_can_snapshot()
555             ok = bdrv_can_snapshot(bs);  in bdrv_all_can_snapshot()
560                        "snapshots", bdrv_get_device_or_node_name(bs));  in bdrv_all_can_snapshot()
586         BlockDriverState *bs = iterbdrvs->data;  in bdrv_all_delete_snapshot()  local
587         AioContext *ctx = bdrv_get_aio_context(bs);  in bdrv_all_delete_snapshot()
592         if ((devices || bdrv_all_snapshots_includes_bs(bs)) &&  in bdrv_all_delete_snapshot()
593             bdrv_snapshot_find(bs, snapshot, name) >= 0)  in bdrv_all_delete_snapshot()
595             ret = bdrv_snapshot_delete(bs, snapshot->id_str,  in bdrv_all_delete_snapshot()
601                           name, bdrv_get_device_or_node_name(bs));  in bdrv_all_delete_snapshot()
632         BlockDriverState *bs = iterbdrvs->data;  in bdrv_all_goto_snapshot()  local
633         AioContext *ctx = bdrv_get_aio_context(bs);  in bdrv_all_goto_snapshot()
638         all_snapshots_includes_bs = bdrv_all_snapshots_includes_bs(bs);  in bdrv_all_goto_snapshot()
642               bdrv_snapshot_goto(bs, name, errp) : 0;  in bdrv_all_goto_snapshot()
647                           name, bdrv_get_device_or_node_name(bs));  in bdrv_all_goto_snapshot()
674         BlockDriverState *bs = iterbdrvs->data;  in bdrv_all_has_snapshot()  local
675         AioContext *ctx = bdrv_get_aio_context(bs);  in bdrv_all_has_snapshot()
680         if (devices || bdrv_all_snapshots_includes_bs(bs)) {  in bdrv_all_has_snapshot()
681             ret = bdrv_snapshot_find(bs, &sn, name);  in bdrv_all_has_snapshot()
690                                  name, bdrv_get_device_or_node_name(bs));  in bdrv_all_has_snapshot()
719         BlockDriverState *bs = iterbdrvs->data;  in bdrv_all_create_snapshot()  local
720         AioContext *ctx = bdrv_get_aio_context(bs);  in bdrv_all_create_snapshot()
724         if (bs == vm_state_bs) {  in bdrv_all_create_snapshot()
726             ret = bdrv_snapshot_create(bs, sn);  in bdrv_all_create_snapshot()
727         } else if (devices || bdrv_all_snapshots_includes_bs(bs)) {  in bdrv_all_create_snapshot()
729             ret = bdrv_snapshot_create(bs, sn);  in bdrv_all_create_snapshot()
734                        sn->name, bdrv_get_device_or_node_name(bs));  in bdrv_all_create_snapshot()
761         BlockDriverState *bs = iterbdrvs->data;  in bdrv_all_find_vmstate_bs()  local
762         AioContext *ctx = bdrv_get_aio_context(bs);  in bdrv_all_find_vmstate_bs()
766         found = (devices || bdrv_all_snapshots_includes_bs(bs)) &&  in bdrv_all_find_vmstate_bs()
767             bdrv_can_snapshot(bs);  in bdrv_all_find_vmstate_bs()
772                             bdrv_get_node_name(bs))) {  in bdrv_all_find_vmstate_bs()
774                     return bs;  in bdrv_all_find_vmstate_bs()
783             return bs;  in bdrv_all_find_vmstate_bs()