window(1): Remove __RCSID & friends.
[dragonfly.git] / usr.bin / window / wwtty.c
CommitLineData
2c872e05 1/* @(#)wwtty.c 8.1 (Berkeley) 6/6/93 */
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2/* $NetBSD: wwtty.c,v 1.7 2003/08/07 11:17:46 agc Exp $ */
3
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4/*
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Edward Wang at The University of California, Berkeley.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
abecab39 19 * 3. Neither the name of the University nor the names of its contributors
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20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
984263bc 36#include <sys/types.h>
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37#if !defined(OLD_TTY) && !defined(TIOCGWINSZ)
38#include <sys/ioctl.h>
39#endif
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40#include <fcntl.h>
41#include "ww.h"
984263bc 42
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43int
44wwgettty(int d, struct ww_tty *t)
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45{
46#ifdef OLD_TTY
47 if (ioctl(d, TIOCGETP, (char *)&t->ww_sgttyb) < 0)
48 goto bad;
49 if (ioctl(d, TIOCGETC, (char *)&t->ww_tchars) < 0)
50 goto bad;
51 if (ioctl(d, TIOCGLTC, (char *)&t->ww_ltchars) < 0)
52 goto bad;
53 if (ioctl(d, TIOCLGET, (char *)&t->ww_lmode) < 0)
54 goto bad;
55 if (ioctl(d, TIOCGETD, (char *)&t->ww_ldisc) < 0)
56 goto bad;
57#else
58 if (tcgetattr(d, &t->ww_termios) < 0)
59 goto bad;
60#endif
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61 return 0;
62bad:
63 wwerrno = WWE_SYS;
64 return -1;
65}
66
67/*
68 * Set the modes of tty 'd' to 't'
69 * 'o' is the current modes. We set the line discipline only if
70 * it changes, to avoid unnecessary flushing of typeahead.
71 */
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72int
73wwsettty(int d, struct ww_tty *t)
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74{
75#ifdef OLD_TTY
76 int i;
77
78 /* XXX, for buggy tty drivers that don't wait for output to drain */
79 while (ioctl(d, TIOCOUTQ, &i) >= 0 && i > 0)
80 usleep(100000);
81 if (ioctl(d, TIOCSETN, (char *)&t->ww_sgttyb) < 0)
82 goto bad;
83 if (ioctl(d, TIOCSETC, (char *)&t->ww_tchars) < 0)
84 goto bad;
85 if (ioctl(d, TIOCSLTC, (char *)&t->ww_ltchars) < 0)
86 goto bad;
87 if (ioctl(d, TIOCLSET, (char *)&t->ww_lmode) < 0)
88 goto bad;
89 if (ioctl(d, TIOCGETD, (char *)&i) < 0)
90 goto bad;
91 if (t->ww_ldisc != i &&
92 ioctl(d, TIOCSETD, (char *)&t->ww_ldisc) < 0)
93 goto bad;
94#else
95#ifdef sun
96 /* XXX, for buggy tty drivers that don't wait for output to drain */
97 (void) tcdrain(d);
98#endif
99 if (tcsetattr(d, TCSADRAIN, &t->ww_termios) < 0)
100 goto bad;
101#endif
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102 return 0;
103bad:
104 wwerrno = WWE_SYS;
105 return -1;
106}
107
108/*
109 * The ttysize and stop-start routines must also work
110 * on the control side of pseudoterminals.
111 */
112
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113int
114wwgetttysize(int d, int *r, int *c)
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115{
116 struct winsize winsize;
117
118 if (ioctl(d, TIOCGWINSZ, (char *)&winsize) < 0) {
119 wwerrno = WWE_SYS;
120 return -1;
121 }
122 if (winsize.ws_row != 0)
123 *r = winsize.ws_row;
124 if (winsize.ws_col != 0)
125 *c = winsize.ws_col;
126 return 0;
127}
128
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129int
130wwsetttysize(int d, int r, int c)
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131{
132 struct winsize winsize;
133
134 winsize.ws_row = r;
135 winsize.ws_col = c;
136 winsize.ws_xpixel = winsize.ws_ypixel = 0;
137 if (ioctl(d, TIOCSWINSZ, (char *)&winsize) < 0) {
138 wwerrno = WWE_SYS;
139 return -1;
140 }
141 return 0;
142}
143
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144int
145wwstoptty(int d)
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146{
147#if !defined(OLD_TTY) && defined(TCOOFF)
148 /* not guaranteed to work on the pty side */
149 if (tcflow(d, TCOOFF) < 0)
150#else
abecab39 151 if (ioctl(d, TIOCSTOP, (char *)0) < 0)
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152#endif
153 {
154 wwerrno = WWE_SYS;
155 return -1;
156 }
157 return 0;
158}
159
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160int
161wwstarttty(int d)
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162{
163#if !defined(OLD_TTY) && defined(TCOON)
164 /* not guaranteed to work on the pty side */
165 if (tcflow(d, TCOON) < 0)
166#else
abecab39 167 if (ioctl(d, TIOCSTART, (char *)0) < 0)
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168#endif
169 {
170 wwerrno = WWE_SYS;
171 return -1;
172 }
173 return 0;
174}