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60de5df9 | 1 | /* |
46e9ea25 KB |
2 | * Copyright (c) 1983 Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
3dd3a9e5 KB |
5 | * This code is derived from software contributed to Berkeley by |
6 | * Edward Wang at The University of California, Berkeley. | |
7 | * | |
af359dea C |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
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. | |
23 | * | |
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 | |
34 | * SUCH DAMAGE. | |
60de5df9 EW |
35 | */ |
36 | ||
46e9ea25 | 37 | #ifndef lint |
af359dea | 38 | static char sccsid[] = "@(#)wwtty.c 3.18 (Berkeley) 2/2/91"; |
46e9ea25 KB |
39 | #endif /* not lint */ |
40 | ||
b94626a3 | 41 | #include "ww.h" |
9b71400a | 42 | #include <sys/types.h> |
b1189050 | 43 | #include <fcntl.h> |
9de86788 EW |
44 | #if !defined(OLD_TTY) && !defined(TIOCGWINSZ) |
45 | #include <sys/ioctl.h> | |
46 | #endif | |
b94626a3 EW |
47 | |
48 | wwgettty(d, t) | |
49 | register struct ww_tty *t; | |
50 | { | |
9de86788 | 51 | #ifdef OLD_TTY |
20029082 | 52 | if (ioctl(d, TIOCGETP, (char *)&t->ww_sgttyb) < 0) |
03e75950 | 53 | goto bad; |
20029082 | 54 | if (ioctl(d, TIOCGETC, (char *)&t->ww_tchars) < 0) |
03e75950 | 55 | goto bad; |
20029082 | 56 | if (ioctl(d, TIOCGLTC, (char *)&t->ww_ltchars) < 0) |
03e75950 | 57 | goto bad; |
20029082 | 58 | if (ioctl(d, TIOCLGET, (char *)&t->ww_lmode) < 0) |
03e75950 | 59 | goto bad; |
20029082 | 60 | if (ioctl(d, TIOCGETD, (char *)&t->ww_ldisc) < 0) |
03e75950 | 61 | goto bad; |
bbbb7b14 EW |
62 | #else |
63 | if (tcgetattr(d, &t->ww_termios) < 0) | |
64 | goto bad; | |
65 | #endif | |
b1189050 EW |
66 | if ((t->ww_fflags = fcntl(d, F_GETFL, 0)) < 0) |
67 | goto bad; | |
b94626a3 | 68 | return 0; |
03e75950 EW |
69 | bad: |
70 | wwerrno = WWE_SYS; | |
71 | return -1; | |
b94626a3 EW |
72 | } |
73 | ||
4cbd8755 EW |
74 | /* |
75 | * Set the modes of tty 'd' to 't' | |
76 | * 'o' is the current modes. We set the line discipline only if | |
77 | * it changes, to avoid unnecessary flushing of typeahead. | |
78 | */ | |
9de86788 EW |
79 | wwsettty(d, t) |
80 | register struct ww_tty *t; | |
b94626a3 | 81 | { |
9de86788 | 82 | #ifdef OLD_TTY |
bbbb7b14 | 83 | int i; |
9de86788 EW |
84 | |
85 | /* XXX, for buggy tty drivers that don't wait for output to drain */ | |
bbbb7b14 EW |
86 | while (ioctl(d, TIOCOUTQ, &i) >= 0 && i > 0) |
87 | usleep(100000); | |
88 | if (ioctl(d, TIOCSETN, (char *)&t->ww_sgttyb) < 0) | |
03e75950 | 89 | goto bad; |
20029082 | 90 | if (ioctl(d, TIOCSETC, (char *)&t->ww_tchars) < 0) |
03e75950 | 91 | goto bad; |
20029082 | 92 | if (ioctl(d, TIOCSLTC, (char *)&t->ww_ltchars) < 0) |
03e75950 | 93 | goto bad; |
20029082 | 94 | if (ioctl(d, TIOCLSET, (char *)&t->ww_lmode) < 0) |
03e75950 | 95 | goto bad; |
9de86788 EW |
96 | if (ioctl(d, TIOCGETD, (char *)&i) < 0) |
97 | goto bad; | |
98 | if (t->ww_ldisc != i && | |
20029082 | 99 | ioctl(d, TIOCSETD, (char *)&t->ww_ldisc) < 0) |
03e75950 | 100 | goto bad; |
bbbb7b14 | 101 | #else |
9de86788 EW |
102 | #ifdef sun |
103 | /* XXX, for buggy tty drivers that don't wait for output to drain */ | |
104 | (void) tcdrain(d); | |
105 | #endif | |
bbbb7b14 EW |
106 | if (tcsetattr(d, TCSADRAIN, &t->ww_termios) < 0) |
107 | goto bad; | |
108 | #endif | |
b1189050 EW |
109 | if (fcntl(d, F_SETFL, t->ww_fflags) < 0) |
110 | goto bad; | |
b94626a3 | 111 | return 0; |
03e75950 EW |
112 | bad: |
113 | wwerrno = WWE_SYS; | |
114 | return -1; | |
b94626a3 | 115 | } |
9de86788 EW |
116 | |
117 | /* | |
118 | * The ttysize and stop-start routines must also work | |
119 | * on the control side of pseudoterminals. | |
120 | */ | |
121 | ||
122 | wwgetttysize(d, r, c) | |
123 | int *r, *c; | |
124 | { | |
125 | struct winsize winsize; | |
126 | ||
127 | if (ioctl(d, TIOCGWINSZ, (char *)&winsize) < 0) { | |
128 | wwerrno = WWE_SYS; | |
129 | return -1; | |
130 | } | |
131 | if (winsize.ws_row != 0) | |
132 | *r = winsize.ws_row; | |
133 | if (winsize.ws_col != 0) | |
134 | *c = winsize.ws_col; | |
135 | return 0; | |
136 | } | |
137 | ||
138 | wwsetttysize(d, r, c) | |
139 | { | |
140 | struct winsize winsize; | |
141 | ||
142 | winsize.ws_row = r; | |
143 | winsize.ws_col = c; | |
144 | winsize.ws_xpixel = winsize.ws_ypixel = 0; | |
145 | if (ioctl(d, TIOCSWINSZ, (char *)&winsize) < 0) { | |
146 | wwerrno = WWE_SYS; | |
147 | return -1; | |
148 | } | |
149 | return 0; | |
150 | } | |
151 | ||
152 | wwstoptty(d) | |
153 | { | |
154 | #if !defined(OLD_TTY) && defined(TCOOFF) | |
155 | /* not guaranteed to work on the pty side */ | |
156 | if (tcflow(d, TCOOFF) < 0) | |
157 | #else | |
158 | if (ioctl(d, TIOCSTOP, (char *)0) < 0) | |
159 | #endif | |
160 | { | |
161 | wwerrno = WWE_SYS; | |
162 | return -1; | |
163 | } | |
164 | return 0; | |
165 | } | |
166 | ||
167 | wwstarttty(d) | |
168 | { | |
169 | #if !defined(OLD_TTY) && defined(TCOON) | |
170 | /* not guaranteed to work on the pty side */ | |
171 | if (tcflow(d, TCOON) < 0) | |
172 | #else | |
173 | if (ioctl(d, TIOCSTART, (char *)0) < 0) | |
174 | #endif | |
175 | { | |
176 | wwerrno = WWE_SYS; | |
177 | return -1; | |
178 | } | |
179 | return 0; | |
180 | } |