1 files changed, 14 insertions, 24 deletions

diff --git a/winsup/cygwin/pinfo.cc b/winsup/cygwin/pinfo.cc
index 7affe4150..65640b2c9 100644
--- a/winsup/cygwin/pinfo.cc
+++ b/winsup/cygwin/pinfo.cc
@@ -433,9 +433,6 @@ _pinfo::_ctty (char *buf)
 bool
 _pinfo::set_ctty (fhandler_termios *fh, int flags)
 {
-debug_printf ("fh %p", fh);
-debug_printf ("tc %p", fh->tc ());
-if (!this || !fh->tc ()) try_to_debug ();
   tty_min& tc = *fh->tc ();
   debug_printf ("old %s, ctty device number %p, tc.ntty device number %p flags & O_NOCTTY %p", __ctty (), ctty, tc.ntty, flags & O_NOCTTY);
   if (fh && &tc && (ctty <= 0 || ctty == tc.ntty) && !(flags & O_NOCTTY))
@@ -466,30 +463,23 @@ if (!this || !fh->tc ()) try_to_debug ();
       syscall_printf ("attaching %s sid %d, pid %d, pgid %d, tty->pgid %d, tty->sid %d",
 		      __ctty (), sid, pid, pgid, tc.getpgid (), tc.getsid ());
       if (!cygwin_finished_initializing && !myself->cygstarted
-	  && myself->pgid == myself->pid && tc.getpgid () && tc.getsid ())
+	  && pgid == pid && tc.getpgid () && tc.getsid ())
 	{
-	  myself->pgid = tc.getpgid ();
-	  myself->sid = tc.getsid ();
+	  pgid = tc.getpgid ();
 	}
 
-      pinfo p (tc.getsid ());
-      if (sid == pid && (!p || p->pid == pid || !p->exists ()))
-	{
-#ifdef DEBUGGING
-	  debug_printf ("resetting %s sid.  Was %d, now %d.  pgid was %d, now %d.",
-			   __ctty (), tc.getsid (), sid, tc.getpgid (), pgid);
-#else
-	  paranoid_printf ("resetting %s sid.  Was %d, now %d.  pgid was %d, now %d.",
-			   __ctty (), tc.getsid (), sid, tc.getpgid (), pgid);
-#endif
-	  /* We are the session leader */
-	  tc.setsid (sid);
-	  tc.setpgid (pgid);
-	}
-      else
-	sid = tc.getsid ();
-      if (tc.getpgid () == 0)
-	  tc.setpgid (pgid);
+      /* May actually need to do this:
+
+	 if (sid == pid && !tc.getsid () || !procinfo (tc.getsid ())->exists)
+
+	 but testing for process existence is expensive so we avoid it until
+	 an obvious bug surfaces. */
+      if (sid == pid && !tc.getsid ())
+	tc.setsid (sid);
+      sid = tc.getsid ();
+      /* See above */
+      if (!tc.getpgid () && pgid == pid)
+	tc.setpgid (pgid);
     }
   debug_printf ("cygheap->ctty now %p, archetype %p", cygheap->ctty, fh->archetype);
   return ctty > 0;