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Command: tcgetsid | Section: 3 | Source: FreeBSD | File: tcgetsid.3.gz
TCGETSID(3) FreeBSD Library Functions Manual TCGETSID(3)
NAME
tcgetsid - get session ID associated with a controlling terminal
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <termios.h>
pid_t
tcgetsid(int fd);
DESCRIPTION
The tcgetsid() function returns the process group ID of the session
leader for a controlling terminal specified by fd.
ERRORS
If an error occurs, tcgetsid() returns -1 and the global variable errno
is set to indicate the error, as follows:
[EBADF] The fd argument is not a valid file descriptor.
[ENOTTY] The calling process does not have a controlling
terminal or the underlying terminal device represented
by fd is not the controlling terminal.
SEE ALSO
getsid(2), setsid(2), tcgetpgrp(3), tcsetsid(3)
STANDARDS
The tcgetsid() function conforms to X/Open Portability Guide Issue 4,
Version 2 ("XPG4.2").
FreeBSD 14.1-RELEASE-p8 November 28, 2022 FreeBSD 14.1-RELEASE-p8