+void block_job_remove_all_bdrv(BlockJob *job)
+{
+ GSList *l;
+ for (l = job->nodes; l; l = l->next) {
+ BdrvChild *c = l->data;
+ bdrv_op_unblock_all(c->bs, job->blocker);
+ bdrv_root_unref_child(c);
+ }
+ g_slist_free(job->nodes);
+ job->nodes = NULL;
+}
+
+int block_job_add_bdrv(BlockJob *job, const char *name, BlockDriverState *bs,
+ uint64_t perm, uint64_t shared_perm, Error **errp)
+{
+ BdrvChild *c;
+
+ c = bdrv_root_attach_child(bs, name, &child_job, perm, shared_perm,
+ job, errp);
+ if (c == NULL) {
+ return -EPERM;
+ }
+
+ job->nodes = g_slist_prepend(job->nodes, c);
+ bdrv_ref(bs);
+ bdrv_op_block_all(bs, job->blocker);
+
+ return 0;
+}
+