table of contents
GETSID(2) | Linux Programmer's Manual | GETSID(2) |
NAME¶
getsid - get session ID
SYNOPSIS¶
#include <sys/types.h>
#include <unistd.h>
pid_t getsid(pid_t pid);
getsid():
|| /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
DESCRIPTION¶
getsid(0) returns the session ID of the calling process. getsid() returns the session ID of the process with process ID pid. If pid is 0, getsid() returns the session ID of the calling process.
RETURN VALUE¶
On success, a session ID is returned. On error, (pid_t) -1 will be returned, and errno is set appropriately.
ERRORS¶
VERSIONS¶
This system call is available on Linux since version 2.0.
CONFORMING TO¶
POSIX.1-2001, POSIX.1-2008, SVr4.
NOTES¶
Linux does not return EPERM.
See credentials(7) for a description of sessions and session IDs.
SEE ALSO¶
COLOPHON¶
This page is part of release 5.10 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
2017-09-15 | Linux |