2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Edward Wang at The University of California, Berkeley.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 static char sccsid[] = "@(#)wwtty.c 8.1 (Berkeley) 6/6/93";
44 #include <sys/types.h>
46 #if !defined(OLD_TTY) && !defined(TIOCGWINSZ)
47 #include <sys/ioctl.h>
51 register struct ww_tty *t;
54 if (ioctl(d, TIOCGETP, (char *)&t->ww_sgttyb) < 0)
56 if (ioctl(d, TIOCGETC, (char *)&t->ww_tchars) < 0)
58 if (ioctl(d, TIOCGLTC, (char *)&t->ww_ltchars) < 0)
60 if (ioctl(d, TIOCLGET, (char *)&t->ww_lmode) < 0)
62 if (ioctl(d, TIOCGETD, (char *)&t->ww_ldisc) < 0)
65 if (tcgetattr(d, &t->ww_termios) < 0)
68 if ((t->ww_fflags = fcntl(d, F_GETFL, 0)) < 0)
77 * Set the modes of tty 'd' to 't'
78 * 'o' is the current modes. We set the line discipline only if
79 * it changes, to avoid unnecessary flushing of typeahead.
82 register struct ww_tty *t;
87 /* XXX, for buggy tty drivers that don't wait for output to drain */
88 while (ioctl(d, TIOCOUTQ, &i) >= 0 && i > 0)
90 if (ioctl(d, TIOCSETN, (char *)&t->ww_sgttyb) < 0)
92 if (ioctl(d, TIOCSETC, (char *)&t->ww_tchars) < 0)
94 if (ioctl(d, TIOCSLTC, (char *)&t->ww_ltchars) < 0)
96 if (ioctl(d, TIOCLSET, (char *)&t->ww_lmode) < 0)
98 if (ioctl(d, TIOCGETD, (char *)&i) < 0)
100 if (t->ww_ldisc != i &&
101 ioctl(d, TIOCSETD, (char *)&t->ww_ldisc) < 0)
105 /* XXX, for buggy tty drivers that don't wait for output to drain */
108 if (tcsetattr(d, TCSADRAIN, &t->ww_termios) < 0)
111 if (fcntl(d, F_SETFL, t->ww_fflags) < 0)
120 * The ttysize and stop-start routines must also work
121 * on the control side of pseudoterminals.
124 wwgetttysize(d, r, c)
127 struct winsize winsize;
129 if (ioctl(d, TIOCGWINSZ, (char *)&winsize) < 0) {
133 if (winsize.ws_row != 0)
135 if (winsize.ws_col != 0)
140 wwsetttysize(d, r, c)
142 struct winsize winsize;
146 winsize.ws_xpixel = winsize.ws_ypixel = 0;
147 if (ioctl(d, TIOCSWINSZ, (char *)&winsize) < 0) {
156 #if !defined(OLD_TTY) && defined(TCOOFF)
157 /* not guaranteed to work on the pty side */
158 if (tcflow(d, TCOOFF) < 0)
160 if (ioctl(d, TIOCSTOP, (char *)0) < 0)
171 #if !defined(OLD_TTY) && defined(TCOON)
172 /* not guaranteed to work on the pty side */
173 if (tcflow(d, TCOON) < 0)
175 if (ioctl(d, TIOCSTART, (char *)0) < 0)