auclnt_open
int auclnt_open(audio_client_t *, int);
if ((rv = auclnt_open(c, 0)) != 0) {
if ((rv = auclnt_open(c, oflag | FNDELAY)) != 0) {
if ((rv = auclnt_open(c, oflag)) != 0) {
if ((rv = auclnt_open(c, 0)) != 0) {