Annotation of src/usr.bin/window/wwtty.c, Revision 1.7
1.7 ! david 1: /* $OpenBSD: wwtty.c,v 1.6 2003/06/03 02:56:23 millert Exp $ */
1.2 deraadt 2: /* $NetBSD: wwtty.c,v 1.4 1995/12/21 11:06:50 mycroft Exp $ */
1.1 deraadt 3:
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.
1.6 millert 19: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 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:
36: #ifndef lint
37: #if 0
38: static char sccsid[] = "@(#)wwtty.c 8.1 (Berkeley) 6/6/93";
39: #else
1.7 ! david 40: static char rcsid[] = "$OpenBSD: wwtty.c,v 1.6 2003/06/03 02:56:23 millert Exp $";
1.1 deraadt 41: #endif
42: #endif /* not lint */
43:
44: #include "ww.h"
45: #include <sys/types.h>
46: #include <fcntl.h>
1.7 ! david 47: #if !defined(OLD_TTY)
1.1 deraadt 48: #include <sys/ioctl.h>
49: #endif
50:
51: wwgettty(d, t)
1.5 mpech 52: struct ww_tty *t;
1.1 deraadt 53: {
54: #ifdef OLD_TTY
55: if (ioctl(d, TIOCGETP, (char *)&t->ww_sgttyb) < 0)
56: goto bad;
57: if (ioctl(d, TIOCGETC, (char *)&t->ww_tchars) < 0)
58: goto bad;
59: if (ioctl(d, TIOCGLTC, (char *)&t->ww_ltchars) < 0)
60: goto bad;
61: if (ioctl(d, TIOCLGET, (char *)&t->ww_lmode) < 0)
62: goto bad;
63: if (ioctl(d, TIOCGETD, (char *)&t->ww_ldisc) < 0)
64: goto bad;
65: #else
66: if (tcgetattr(d, &t->ww_termios) < 0)
67: goto bad;
68: #endif
69: return 0;
70: bad:
71: wwerrno = WWE_SYS;
72: return -1;
73: }
74:
75: /*
76: * Set the modes of tty 'd' to 't'
77: * 'o' is the current modes. We set the line discipline only if
78: * it changes, to avoid unnecessary flushing of typeahead.
79: */
80: wwsettty(d, t)
1.5 mpech 81: struct ww_tty *t;
1.1 deraadt 82: {
83: #ifdef OLD_TTY
84: int i;
85:
86: /* XXX, for buggy tty drivers that don't wait for output to drain */
87: while (ioctl(d, TIOCOUTQ, &i) >= 0 && i > 0)
88: usleep(100000);
89: if (ioctl(d, TIOCSETN, (char *)&t->ww_sgttyb) < 0)
90: goto bad;
91: if (ioctl(d, TIOCSETC, (char *)&t->ww_tchars) < 0)
92: goto bad;
93: if (ioctl(d, TIOCSLTC, (char *)&t->ww_ltchars) < 0)
94: goto bad;
95: if (ioctl(d, TIOCLSET, (char *)&t->ww_lmode) < 0)
96: goto bad;
97: if (ioctl(d, TIOCGETD, (char *)&i) < 0)
98: goto bad;
99: if (t->ww_ldisc != i &&
100: ioctl(d, TIOCSETD, (char *)&t->ww_ldisc) < 0)
101: goto bad;
102: #else
103: #ifdef sun
104: /* XXX, for buggy tty drivers that don't wait for output to drain */
105: (void) tcdrain(d);
106: #endif
107: if (tcsetattr(d, TCSADRAIN, &t->ww_termios) < 0)
108: goto bad;
109: #endif
110: return 0;
111: bad:
112: wwerrno = WWE_SYS;
113: return -1;
114: }
115:
116: /*
117: * The ttysize and stop-start routines must also work
118: * on the control side of pseudoterminals.
119: */
120:
121: wwgetttysize(d, r, c)
122: int *r, *c;
123: {
124: struct winsize winsize;
125:
126: if (ioctl(d, TIOCGWINSZ, (char *)&winsize) < 0) {
127: wwerrno = WWE_SYS;
128: return -1;
129: }
130: if (winsize.ws_row != 0)
131: *r = winsize.ws_row;
132: if (winsize.ws_col != 0)
133: *c = winsize.ws_col;
134: return 0;
135: }
136:
137: wwsetttysize(d, r, c)
138: {
139: struct winsize winsize;
140:
141: winsize.ws_row = r;
142: winsize.ws_col = c;
143: winsize.ws_xpixel = winsize.ws_ypixel = 0;
144: if (ioctl(d, TIOCSWINSZ, (char *)&winsize) < 0) {
145: wwerrno = WWE_SYS;
146: return -1;
147: }
148: return 0;
149: }
150:
151: wwstoptty(d)
152: {
153: #if !defined(OLD_TTY) && defined(TCOOFF)
154: /* not guaranteed to work on the pty side */
155: if (tcflow(d, TCOOFF) < 0)
156: #else
157: if (ioctl(d, TIOCSTOP, (char *)0) < 0)
158: #endif
159: {
160: wwerrno = WWE_SYS;
161: return -1;
162: }
163: return 0;
164: }
165:
166: wwstarttty(d)
167: {
168: #if !defined(OLD_TTY) && defined(TCOON)
169: /* not guaranteed to work on the pty side */
170: if (tcflow(d, TCOON) < 0)
171: #else
172: if (ioctl(d, TIOCSTART, (char *)0) < 0)
173: #endif
174: {
175: wwerrno = WWE_SYS;
176: return -1;
177: }
178: return 0;
179: }
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