DLPI_SERIAL
retval = dlpi_open(cnambuf, &dh, DLPI_EXCL|DLPI_SERIAL);
if ((retval = dlpi_open(portname, &dh, DLPI_SERIAL)) != DLPI_SUCCESS) {
if ((retval = dlpi_open(sername, &dh, DLPI_SERIAL)) != DLPI_SUCCESS) {
if (dip->dli_oflags & DLPI_SERIAL)
if (dip->dli_style != DL_STYLE2 && !(dip->dli_oflags & DLPI_SERIAL))
if (dip->dli_oflags & DLPI_SERIAL) {