GETSID(2) Linux Programmer's Manual GETSID(2)NAME
getsid - get session ID
SYNOPSIS
#include <unistd.h>
pid_t getsid(pid_t pid);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
getsid():
Since glibc 2.12:
_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 500 || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
Before glibc 2.12:
_XOPEN_SOURCE >= 500 || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
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 p exists, 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 p was found.
VERSIONS
This system call is available on Linux since version 2.0.
CONFORMING TO
SVr4, POSIX.1-2001.
NOTES
Linux does not return EPERM.
SEE ALSO getpgid(2), setsid(2), credentials(7)COLOPHON
This page is part of release 3.27 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/.
Linux 2010-09-20 GETSID(2)
Check Out this Related Man Page
GETSID(2) Linux Programmer's Manual GETSID(2)NAME
getsid - get session ID
SYNOPSIS
#include <unistd.h>
pid_t getsid(pid_t pid);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
getsid(): _XOPEN_SOURCE >= 500
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 p exists, 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 p was found.
VERSIONS
This system call is available on Linux since version 2.0.
CONFORMING TO
SVr4, POSIX.1-2001.
NOTES
Linux does not return EPERM.
SEE ALSO getpgid(2), setsid(2), credentials(7)COLOPHON
This page is part of release 3.25 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/.
Linux 2008-12-05 GETSID(2)
my project is very big,has many module and sub procedure that
written by others,so how to get info of thel file opened or unclosed in my project ?
I think there are two ways:
1. with pid_t get process info ,and via file table ( /usr/include/sys/file.h) to check file info.
2. in very... (2 Replies)
I am running Putty 0.60 from Windows XP and I am connecting to a Linux box.
I would like to be able to pass a command line parameter to my Linux session so that my Linux session can execute a specific command, depending on the command line parameter. I have looked on the Internet and tried... (1 Reply)
Hi
I have a strange phenomenon on putty session connected to RHEL4 server.
My session is active but without any activity for 2 or 3 hours and suddenly this message appears on the prompt :
$ *** glibc detected *** free(): invalid pointer: 0xb66e0d50 ***
Could you have an idea about it ? (2 Replies)
Hello All,
I am getting this error while compiling my application on IBM AIX 5.3.
As I tried to define _XOPEN_SOURCE=500 in makefile, that didn't work.
Please help us to resolve the error. (0 Replies)