ISO_SECTOR_SHIFT
off = dirp->loc & ((1 << ISO_SECTOR_SHIFT) - 1);
lbn = hdbtodb(dirp->loc >> ISO_SECTOR_SHIFT);
lbn = hdbtodb(filep->fi_offset >> ISO_SECTOR_SHIFT);
off = filep->fi_offset & ((1 << ISO_SECTOR_SHIFT) - 1);
hsfsp->lbn_shift = ISO_SECTOR_SHIFT;
hsfsp->lbn_secshift = ISO_SECTOR_SHIFT;
off = dirp->loc & ((1 << ISO_SECTOR_SHIFT) - 1);
lbn = hdbtodb(dirp->loc >> ISO_SECTOR_SHIFT);
lbn = hdbtodb(filep->fi_offset >> ISO_SECTOR_SHIFT);
off = filep->fi_offset & ((1 << ISO_SECTOR_SHIFT) - 1);
fsp->lbn_shift = ISO_SECTOR_SHIFT;
fsp->lbn_secshift = ISO_SECTOR_SHIFT;