i_shortlink
bzero((char *)&ip->i_shortlink, (u_int)ip->i_size);
bcopy(ap->a_target, (char *)ip->i_shortlink, len);
uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
bzero((char *)&oip->i_shortlink, (uint)oip->i_size);
bcopy(ap->a_target, (char *)ip->i_shortlink, len);
uiomove((char *)ip->i_shortlink, isize, ap->a_uio);