+ r = sd_bus_get_name_creds(a, arg0, 0, NULL);
+ if (r == -ESRCH || r == -ENXIO) {
+ sd_bus_error_setf(&error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Could not get owners of name '%s': no such name.", arg0);
+ return synthetic_reply_method_errno(m, r, &error);
+ }
+ if (r < 0)
+ return synthetic_reply_method_errno(m, r, NULL);
+