223 	struct xenbus_transaction xbt;  in shutdown_handler()  local
231 	err = xenbus_transaction_start(&xbt);  in shutdown_handler()
235 	str = (char *)xenbus_read(xbt, "control", "shutdown", NULL);  in shutdown_handler()
238 		xenbus_transaction_end(xbt, 1);  in shutdown_handler()
249 		xenbus_write(xbt, "control", "shutdown", "");  in shutdown_handler()
251 	err = xenbus_transaction_end(xbt, 0);  in shutdown_handler()
272 	struct xenbus_transaction xbt;  in sysrq_handler()  local
276 	err = xenbus_transaction_start(&xbt);  in sysrq_handler()
279 	err = xenbus_scanf(xbt, "control", "sysrq", "%c", &sysrq_key);  in sysrq_handler()
291 		xenbus_transaction_end(xbt, 1);  in sysrq_handler()
296 		err = xenbus_printf(xbt, "control", "sysrq", "%c", '\0');  in sysrq_handler()
300 			xenbus_transaction_end(xbt, 1);  in sysrq_handler()
305 	err = xenbus_transaction_end(xbt, 0);  in sysrq_handler()