ccb_pflags
start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
csio->ccb_h.ccb_pflags |=