|TCGETSID(3)||Library Functions Manual||TCGETSID(3)|
tcgetsid() function returns the value of the session ID associated with the specified controlling terminal device. The session ID is defined as the process group ID of the session leader.
tcgetsid() returns -1 and the global variable errno is set to indicate the error, as follows:
tcgetsid() function is expected to be compliant with the IEEE Std 1003.1-2008 (“POSIX.1”) specification.
tcgetsid() function has been available since OpenBSD 5.5.
|October 17, 2017||OpenBSD-current|