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glibc  2.9
getsid.c
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00001 /* getsid -- Return session ID of a process.  Hurd version.
00002    Copyright (C) 1995,97,2002 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <sys/types.h>
00021 #include <unistd.h>
00022 #include <errno.h>
00023 #include <hurd.h>
00024 
00025 pid_t
00026 getsid (pid_t pid)
00027 {
00028   error_t err;
00029   pid_t sid;
00030 
00031   if (pid == 0)
00032     pid = _hurd_pid;
00033 
00034   err = __USEPORT (PROC, __proc_getsid (port, pid, &sid));
00035   if (err)
00036     return (pid_t) __hurd_fail (err);
00037   return sid;
00038 }
00039 libc_hidden_def (getsid)