1  /* BSD-compatible versions of getpgrp function.
       2     Copyright (C) 1991-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <sys/types.h>
      20  
      21  /* Don't include unistd.h because it declares a conflicting
      22     prototype for the POSIX.1 `getpgrp' function.  */
      23  extern pid_t __getpgid (pid_t);
      24  libc_hidden_proto (__getpgid)
      25  extern pid_t __bsd_getpgrp (pid_t);
      26  
      27  pid_t
      28  __bsd_getpgrp (pid_t pid)
      29  {
      30    return __getpgid (pid);
      31  }