1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/getpgid.c b/sysdeps/mach/hurd/getpgid.c
new file mode 100644
index 0000000000..b9a3634fed
--- /dev/null
+++ b/sysdeps/mach/hurd/getpgid.c
@@ -0,0 +1,44 @@
+/* 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 <ansidecl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <hurd.h>
+#include <hurd/port.h>
+
+/* Get the process group ID of process PID.  */
+int
+DEFUN(__getpgid, (pid), pid_t pid)
+{
+  error_t err;
+  pid_t pgrp;
+
+  if (pid == 0)
+    {
+      /* Assume atomic word fetch and store, so don't lock _hurd_pid_lock.  */
+      pgrp = _hurd_pgrp;
+      err = 0;
+    }
+  else
+    err = __USEPORT (PROC, __proc_getpgrp (port, pid, &pgrp));
+
+  return err ? __hurd_fail (err) : pgrp;
+}
+
+weak_alias (__getpgid, getpgid)