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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/mach/hurd/getpgid.c
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initial import
Diffstat (limited to 'sysdeps/mach/hurd/getpgid.c')
-rw-r--r--sysdeps/mach/hurd/getpgid.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/getpgid.c b/sysdeps/mach/hurd/getpgid.c
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+++ b/sysdeps/mach/hurd/getpgid.c
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+/* 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)