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getsid(2) | System Calls Manual | getsid(2) |
NAME¶
getsid - get session ID
LIBRARY¶
Standard C library (libc, -lc)
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
|| /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
DESCRIPTION¶
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 is returned, and errno is set to indicate the error.
ERRORS¶
VERSIONS¶
Linux does not return EPERM.
STANDARDS¶
POSIX.1-2008.
HISTORY¶
POSIX.1-2001, SVr4. Linux 2.0.
NOTES¶
See credentials(7) for a description of sessions and session IDs.
SEE ALSO¶
2023-03-30 | Linux man-pages 6.04 |