stty.c revision 76810 
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.
32 */
33
34#ifndef lint
35static char const copyright[] =
36"@(#) Copyright (c) 1989, 1991, 1993, 1994\n\
37	The Regents of the University of California.  All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41#if 0
42static char sccsid[] = "@(#)stty.c	8.3 (Berkeley) 4/2/94";
43#endif
44static const char rcsid[] =
45  "$FreeBSD: head/bin/stty/stty.c 76810 2001-05-18 11:04:19Z kris $";
46#endif /* not lint */
47
48#include <sys/types.h>
49
50#include <ctype.h>
51#include <err.h>
52#include <errno.h>
53#include <fcntl.h>
54#include <stdio.h>
55#include <stdlib.h>
56#include <string.h>
57#include <unistd.h>
58
59#include "stty.h"
60#include "extern.h"
61
62int main __P((int, char *[]));
63
64int
65main(argc, argv)
66	int argc;
67	char *argv[];
68{
69	struct info i;
70	enum FMT fmt;
71	int ch;
72
73	fmt = NOTSET;
74	i.fd = STDIN_FILENO;
75
76	opterr = 0;
77	while (optind < argc &&
78	    strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
79	    (ch = getopt(argc, argv, "aef:g")) != -1)
80		switch(ch) {
81		case 'a':		/* undocumented: POSIX compatibility */
82			fmt = POSIX;
83			break;
84		case 'e':
85			fmt = BSD;
86			break;
87		case 'f':
88			if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
89				err(1, "%s", optarg);
90			break;
91		case 'g':
92			fmt = GFLAG;
93			break;
94		case '?':
95		default:
96			goto args;
97		}
98
99args:	argc -= optind;
100	argv += optind;
101
102	if (tcgetattr(i.fd, &i.t) < 0)
103		errx(1, "stdin isn't a terminal");
104	if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
105		err(1, "TIOCGETD");
106	if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
107		warn("TIOCGWINSZ");
108
109	checkredirect();			/* conversion aid */
110
111	switch(fmt) {
112	case NOTSET:
113		if (*argv)
114			break;
115		/* FALLTHROUGH */
116	case BSD:
117	case POSIX:
118		print(&i.t, &i.win, i.ldisc, fmt);
119		break;
120	case GFLAG:
121		gprint(&i.t, &i.win, i.ldisc);
122		break;
123	}
124
125	for (i.set = i.wset = 0; *argv; ++argv) {
126		if (ksearch(&argv, &i))
127			continue;
128
129		if (csearch(&argv, &i))
130			continue;
131
132		if (msearch(&argv, &i))
133			continue;
134
135		if (isdigit(**argv)) {
136			speed_t speed;
137
138			speed = atoi(*argv);
139			cfsetospeed(&i.t, speed);
140			cfsetispeed(&i.t, speed);
141			i.set = 1;
142			continue;
143		}
144
145		if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
146			gread(&i.t, *argv + sizeof("gfmt1") - 1);
147			i.set = 1;
148			continue;
149		}
150
151		warnx("illegal option -- %s", *argv);
152		usage();
153	}
154
155	if (i.set && tcsetattr(i.fd, 0, &i.t) < 0)
156		err(1, "tcsetattr");
157	if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0)
158		warn("TIOCSWINSZ");
159	exit(0);
160}
161
162void
163usage()
164{
165
166	(void)fprintf(stderr, "usage: stty [-a|-e|-g] [-f file] [options]\n");
167	exit (1);
168}
169