1 /* getsid -- Return session ID of a process. Hurd version. 2 Copyright (C) 1995-2022 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 #include <unistd.h> 21 #include <errno.h> 22 #include <hurd.h> 23 24 pid_t getsid(pid_t pid)25getsid (pid_t pid) 26 { 27 error_t err; 28 pid_t sid; 29 30 if (pid == 0) 31 pid = _hurd_pid; 32 33 err = __USEPORT (PROC, __proc_getsid (port, pid, &sid)); 34 if (err) 35 return (pid_t) __hurd_fail (err); 36 return sid; 37 } 38 libc_hidden_def (getsid) 39