398 	int slave;  member
407 	if (openpty(&info->master, &info->slave, NULL, NULL, NULL))  in openpty_cb()
411 static int async_pty(int master, int slave)  in async_pty()  argument
423 	if ((fcntl(slave, F_SETFL, flags | O_NONBLOCK) < 0))  in async_pty()
432 	struct openpty_arg pty = { .master = -1, .slave = -1 };  in check_one_sigio()
433 	int master, slave, err;  in check_one_sigio()  local
443 	slave = pty.slave;  in check_one_sigio()
445 	if ((master == -1) || (slave == -1)) {  in check_one_sigio()
459 	err = async_pty(master, slave);  in check_one_sigio()
481 	(*proc)(master, slave);  in check_one_sigio()
484 	close(slave);  in check_one_sigio()
491 static void tty_output(int master, int slave)  in tty_output()  argument
504 	while (((n = read(slave, buf, sizeof(buf))) > 0) &&  in tty_output()
517 static void tty_close(int master, int slave)  in tty_close()  argument
522 	close(slave);  in tty_close()