_dns_pwscan
rv = _dns_pwscan(&rerror, &_dns_passwd,
rv = _dns_pwscan(retval, pw, buffer, buflen, &state, _dns_uid_zones);
rv = _dns_pwscan(&rerror, &_dns_passwd,
rv = _dns_pwscan(retval, pw, buffer, buflen, &state, _dns_nam_zones);