These interfaces are obsoleted by
ioctl(2). They are available from the compatibility library, libcompat.
The
stty() function sets the state of the terminal associated with
fd. The
gtty() function retrieves the state of the terminal associated with
fd. To set the state of a terminal the call must have write permission.
The
stty() call is actually ‘ioctl(fd, TIOCSETP, buf)', while the
gtty() call is ‘ioctl(fd, TIOCGETP, buf)'. See
ioctl(2) and
tty(4) for an explanation.