cdio_isset
if (cdio_isset(mediacap, MMC_FEATURE_CDRW_WRITE) == 0 &&
if (cdio_isset(mediacap, MMC_FEATURE_CD_TAO) == 0)
scr.cmd[1] = (cdio_isset(mediacap, MMC_FEATURE_CDRW_CAV)) != 0;