Remove not needed void casts.
[dragonfly.git] / bin / stty / stty.c
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1/*-
2 * Copyright (c) 1989, 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
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32 *
33 * @(#) Copyright (c) 1989, 1991, 1993, 1994 The Regents of the University of California. All rights reserved.
34 * @(#)stty.c 8.3 (Berkeley) 4/2/94
35 * $FreeBSD: src/bin/stty/stty.c,v 1.13.2.2 2001/07/04 22:40:00 kris Exp $
57fed2af 36 * $DragonFly: src/bin/stty/stty.c,v 1.5 2004/11/07 20:54:52 eirikn Exp $
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37 */
38
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39#include <sys/types.h>
40
41#include <ctype.h>
42#include <err.h>
43#include <errno.h>
44#include <fcntl.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <string.h>
48#include <unistd.h>
49
50#include "stty.h"
51#include "extern.h"
52
9dbf638f 53int main (int, char *[]);
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54
55int
b5744197 56main(int argc, char **argv)
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57{
58 struct info i;
59 enum FMT fmt;
60 int ch;
61
62 fmt = NOTSET;
63 i.fd = STDIN_FILENO;
64
65 opterr = 0;
66 while (optind < argc &&
67 strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
68 (ch = getopt(argc, argv, "aef:g")) != -1)
69 switch(ch) {
70 case 'a': /* undocumented: POSIX compatibility */
71 fmt = POSIX;
72 break;
73 case 'e':
74 fmt = BSD;
75 break;
76 case 'f':
77 if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
78 err(1, "%s", optarg);
79 break;
80 case 'g':
81 fmt = GFLAG;
82 break;
83 case '?':
84 default:
85 goto args;
86 }
87
88args: argc -= optind;
89 argv += optind;
90
91 if (tcgetattr(i.fd, &i.t) < 0)
92 errx(1, "stdin isn't a terminal");
93 if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
94 err(1, "TIOCGETD");
95 if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
96 warn("TIOCGWINSZ");
97
98 checkredirect(); /* conversion aid */
99
100 switch(fmt) {
101 case NOTSET:
102 if (*argv)
103 break;
104 /* FALLTHROUGH */
105 case BSD:
106 case POSIX:
107 print(&i.t, &i.win, i.ldisc, fmt);
108 break;
109 case GFLAG:
110 gprint(&i.t, &i.win, i.ldisc);
111 break;
112 }
113
114 for (i.set = i.wset = 0; *argv; ++argv) {
115 if (ksearch(&argv, &i))
116 continue;
117
118 if (csearch(&argv, &i))
119 continue;
120
121 if (msearch(&argv, &i))
122 continue;
123
124 if (isdigit(**argv)) {
125 speed_t speed;
126
127 speed = atoi(*argv);
128 cfsetospeed(&i.t, speed);
129 cfsetispeed(&i.t, speed);
130 i.set = 1;
131 continue;
132 }
133
134 if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
135 gread(&i.t, *argv + sizeof("gfmt1") - 1);
136 i.set = 1;
137 continue;
138 }
139
140 warnx("illegal option -- %s", *argv);
141 usage();
142 }
143
144 if (i.set && tcsetattr(i.fd, 0, &i.t) < 0)
145 err(1, "tcsetattr");
146 if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0)
147 warn("TIOCSWINSZ");
148 exit(0);
149}
150
151void
b5744197 152usage(void)
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153{
154
57fed2af 155 fprintf(stderr, "usage: stty [-a|-e|-g] [-f file] [options]\n");
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156 exit (1);
157}