+ } else if (streq(name, "Controller")) {
+ const char *controller;
+ char *c;
+
+ r = sd_bus_message_read(message, "s", &controller);
+ if (r < 0)
+ return r;
+
+ if (!isempty(controller) && !service_name_is_valid(controller))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Controller '%s' is not a valid bus name.", controller);
+
+ if (mode != UNIT_CHECK) {
+ if (isempty(controller))
+ c = NULL;
+ else {
+ c = strdup(controller);
+ if (!c)
+ return -ENOMEM;
+ }
+
+ free(s->controller);
+ s->controller = c;
+ }
+
+ return 1;
+