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.\"     from: @(#)stty.3	8.1 (Berkeley) 6/4/93
.\"	$NetBSD: stty.3,v 1.9.98.1 2019/09/05 08:19:42 martin Exp $
.\"
.Dd September 2, 2019
.Dt STTY 3
.Os
.Sh NAME
.Nm stty ,
.Nm gtty
.Nd set and get terminal state (defunct)
.Sh LIBRARY
.Lb libcompat
.Sh SYNOPSIS
.In sgtty.h
.Fn stty "int fd" "struct sgttyb *buf"
.Fn gtty "int fd" "struct sgttyb *buf"
.Sh DESCRIPTION
.Bf -symbolic
These interfaces are obsoleted by
.Xr ioctl 2 .
They are available from the compatibility library, libcompat.
.Ef
.Pp
The
.Fn stty
function
sets the state of the terminal associated with
.Fa fd .
The
.Fn gtty
function
retrieves the state of the terminal associated
with
.Fa fd .
To set the state of a terminal the call must have
write permission.
.Pp
The
.Fn stty
call is actually
.Ql ioctl(fd, TIOCSETP, buf) ,
while
the
.Fn gtty
call is
.Ql ioctl(fd, TIOCGETP, buf) .
See
.Xr ioctl 2
and
.Xr tty 4
for an explanation.
.Sh DIAGNOSTICS
If the call is successful 0 is returned, otherwise \-1 is
returned and the global variable
.Va errno
contains the reason for the failure.
.Sh SEE ALSO
.Xr ioctl 2 ,
.Xr tty 4
.Sh HISTORY
The
.Fn stty
and
.Fn gtty
functions appeared in
.At v1 .
Obsoleted by
.Xr ioctl 2 ,
these functions were moved to libcompat in
.Bx 4.2 .