Name
getsid — get session ID
Synopsis
#include <unistd.h>
pid_t
getsid( |
pid_t | pid); |
![[Note]](../stylesheet/note.png) |
Note | ||
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DESCRIPTION
getsid(0)
returns the session ID of the calling process. getsid(p) returns the session
ID of the process with process ID p. (The session ID of a
process is the process group ID of the session leader.)
RETURN VALUE
On success, a session ID is returned. On error,
(pid_t) −1 will
be returned, and errno is set
appropriately.
ERRORS
- EPERM
-
A process with process ID
pexists, but it is not in the same session as the calling process, and the implementation considers this an error. - ESRCH
-
No process with process ID
pwas found.
NOTES
Linux does not return EPERM.
Linux has this system call since Linux 1.3.44. There is libc support since libc 5.2.19.
COLOPHON
This page is part of release 2.79 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at
http://www.kernel.org/doc/man-pages/.
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Copyright (C) 1996 Andries Brouwer (aebcwi.nl) This is free documentation; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU General Public License's references to "object code" and "executables" are to be interpreted as the output of any document formatting or typesetting system, including intermediate and printed output. This manual 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this manual; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. Modified Thu Oct 31 14:18:40 1996 by Eric S. Raymond <esry\thyrsus.com> Modified 2001-12-17, aeb |