sysdeps/mach/hurd/getsid.c

   1 /* getsid -- Return session ID of a process.  Hurd version.
   2    Copyright (C) 1995,97,2002 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <sys/types.h>
  21 #include <unistd.h>
  22 #include <errno.h>
  23 #include <hurd.h>
  24
  25 pid_t
  26 getsid (pid_t pid)
  27 {
  28   error_t err;
  29   pid_t sid;
  30
  31   if (pid == 0)
  32     pid = _hurd_pid;
  33
  34   err = __USEPORT (PROC, __proc_getsid (port, pid, &sid));
  35   if (err)
  36     return (pid_t) __hurd_fail (err);
  37   return sid;
  38 }
  39 libc_hidden_def (getsid)