settgid
if (tgid = settgid(mypgid, jp->j_pgid))
if (!settgid(mypgid, jp->j_pgid) ||
!settgid(mypgid, getpgid(jp->j_pid)))
(void) settgid(jp->j_tgid, mypgid);
(void) settgid(mypgid, svpgid);
(void) settgid(svtgid, mypgid);
(void) settgid(svtgid, mypgid);
(void) settgid(mypgid, svpgid);