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(DIP(ip, i_shortlink), (uint64_t)ip->i_size);
bcopy(ap->a_target, DIP(ip, i_shortlink), len);
return (uiomove(DIP(ip, i_shortlink), isize, ap->a_uio));