1 files changed, 57 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/setpgid.c b/sysdeps/mach/hurd/setpgid.c
new file mode 100644
index 0000000000..7c74ef8a4c
--- /dev/null
+++ b/sysdeps/mach/hurd/setpgid.c
@@ -0,0 +1,57 @@
+/* Copyright (C) 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 <ansidecl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <hurd.h>
+#include <hurd/port.h>
+
+/* Set the process group ID of the process matching PID to PGID.
+   If PID is zero, the current process's process group ID is set.
+   If PGID is zero, the process ID of the process is used.  */
+int
+DEFUN(__setpgid, (pid, pgid), pid_t pid AND pid_t pgid)
+{
+  error_t err;
+  unsigned int stamp;
+
+  stamp = _hurd_pids_changed_stamp; /* Atomic fetch.  */
+
+  if (err = __USEPORT (PROC, __proc_setpgrp (port, pid, pgid)))
+    return __hurd_fail (err);
+
+  if (pid == 0 || pid == _hurd_pid)
+    /* Synchronize with the signal thread to make sure we have
+       received and processed proc_newids before returning to the user.  */
+    while (_hurd_pids_changed_stamp == stamp)
+      {
+#ifdef noteven
+	/* XXX we have no need for a mutex, but cthreads demands one.  */
+	__condition_wait (&_hurd_pids_changed_sync, NULL);
+#else
+	__swtch_pri(0);
+#endif
+      }
+
+  return 0;
+
+}
+
+weak_alias (__setpgid, setpgid)
+weak_alias (__setpgid, setpgrp)