|  | /* Copyright (C) 1991-2016 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 Lesser General Public | 
|  | License as published by the Free Software Foundation; either | 
|  | version 2.1 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 | 
|  | Lesser General Public License for more details. | 
|  |  | 
|  | You should have received a copy of the GNU Lesser General Public | 
|  | License along with the GNU C Library; if not, see | 
|  | <http://www.gnu.org/licenses/>.  */ | 
|  |  | 
|  | #include <unistd.h> | 
|  | #include <sys/types.h> | 
|  |  | 
|  | /* Get the process group ID of process PID.  */ | 
|  | pid_t | 
|  | __getpgid (pid_t pid) | 
|  | { | 
|  | return pid; | 
|  | } | 
|  | libc_hidden_def (__getpgid) | 
|  | weak_alias (__getpgid, getpgid) | 
|  |  | 
|  | stub_warning (getpgid) |