initial import

hurd/hurdpid.c

@@ -0,0 +1,71 @@
+/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <hurd.h>
+pid_t _hurd_pid, _hurd_ppid, _hurd_pgrp;
+int _hurd_orphaned;
+
+static void
+init_pids (void)
+{
+  __USEPORT (PROC,
+	     ({
+	       __proc_getpids (port, &_hurd_pid, &_hurd_ppid, &_hurd_orphaned);
+	       __proc_getpgrp (port, _hurd_pid, &_hurd_pgrp);
+	     }));
+
+  (void) &init_pids;		/* Avoid "defined but not used" warning.  */
+}
+
+text_set_element (_hurd_proc_subinit, init_pids);
+
+#include <hurd/msg_server.h>
+#include "set-hooks.h"
+#include <cthreads.h>
+
+DEFINE_HOOK (_hurd_pgrp_changed_hook, (pid_t));
+
+/* These let user threads synchronize with an operation which changes ids.  */
+unsigned int _hurd_pids_changed_stamp;
+struct condition _hurd_pids_changed_sync;
+
+kern_return_t
+_S_msg_proc_newids (mach_port_t me,
+		    task_t task,
+		    pid_t ppid, pid_t pgrp, int orphaned)
+{
+  if (task != __mach_task_self ())
+    return EPERM;
+
+  __mach_port_deallocate (__mach_task_self (), task);
+
+  _hurd_ppid = ppid;
+  _hurd_pgrp = pgrp;
+  _hurd_orphaned = orphaned;
+
+  /* Run things that want notification of a pgrp change.  */
+  RUN_HOOK (_hurd_pgrp_changed_hook, (_hurd_pgrp));
+
+  /* Notify any waiting user threads that the id change as been completed.  */
+  ++_hurd_pids_changed_stamp;
+#ifdef noteven
+  __condition_broadcast (&_hurd_pids_changed_sync);
+#endif
+
+  return 0;
+}