isonum_723
if (isonum_723(vd->logical_block_size) == ISO_DEFAULT_BLOCK_SIZE) {
inop->inode.iso_uid = isonum_723(ap->owner); /* what about 0? */
inop->inode.iso_gid = isonum_723(ap->group); /* what about 0? */
isonum_723 (high_sierra?
return isonum_723(buf);