.\" Copyright, the authors of the Linux man-pages project
.\"
.\" SPDX-License-Identifier: GPL-1.0-or-later
.\"
.TH TIOCTTYGSTRUCT 2const (date) "Linux man-pages (unreleased)"
.SH NAME
TIOCTTYGSTRUCT
\-
kernel debugging
.SH LIBRARY
Standard C library
.RI ( libc ,\~ \-lc )
.SH SYNOPSIS
.nf
.B #include <sys/ioctl.h>
.P
.BI "int ioctl(int " fd ", TIOCTTYGSTRUCT, struct tty_struct *" argp );
.P
.B #include <linux/tty.h>
.P
.B struct tty_struct;
.fi
.SH DESCRIPTION
Get the
.I tty_struct
corresponding to
.IR fd .
.SH RETURN VALUE
On success,
0 is returned.
On error,
\-1 is returned, and
.I errno
is set to indicate the error.
.SH HISTORY
This operation was removed in Linux 2.5.67.
.\"     commit b3506a09d15dc5aee6d4bb88d759b157016e1864
.\"     Author: Andries E. Brouwer <andries.brouwer@cwi.nl>
.\"     Date:   Tue Apr 1 04:42:46 2003 -0800
.\"
.\"     [PATCH] kill TIOCTTYGSTRUCT
.\"
.\"     Only used for (dubious) debugging purposes, and exposes
.\"     internal kernel state.
.\"
.SH SEE ALSO
.BR ioctl (2),
.BR ioctl_tty (2)