stty.c revision 1557 
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 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
41static char sccsid[] = "@(#)stty.c	8.3 (Berkeley) 4/2/94";
42#endif /* not lint */
43
44#include <sys/types.h>
45
46#include <ctype.h>
47#include <err.h>
48#include <errno.h>
49#include <fcntl.h>
50#include <stdio.h>
51#include <stdlib.h>
52#include <string.h>
53#include <unistd.h>
54
55#include "stty.h"
56#include "extern.h"
57
58int
59main(argc, argv)
60	int argc;
61	char *argv[];
62{
63	struct info i;
64	enum FMT fmt;
65	int ch;
66
67	fmt = NOTSET;
68	i.fd = STDIN_FILENO;
69
70	opterr = 0;
71	while (optind < argc &&
72	    strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
73	    (ch = getopt(argc, argv, "aef:g")) != EOF)
74		switch(ch) {
75		case 'a':		/* undocumented: POSIX compatibility */
76			fmt = POSIX;
77			break;
78		case 'e':
79			fmt = BSD;
80			break;
81		case 'f':
82			if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
83				err(1, "%s", optarg);
84			break;
85		case 'g':
86			fmt = GFLAG;
87			break;
88		case '?':
89		default:
90			goto args;
91		}
92
93args:	argc -= optind;
94	argv += optind;
95
96	if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
97		err(1, "TIOCGETD");
98	if (tcgetattr(i.fd, &i.t) < 0)
99		err(1, "tcgetattr");
100	if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
101		warn("TIOCGWINSZ: %s\n", strerror(errno));
102
103	checkredirect();			/* conversion aid */
104
105	switch(fmt) {
106	case NOTSET:
107		if (*argv)
108			break;
109		/* FALLTHROUGH */
110	case BSD:
111	case POSIX:
112		print(&i.t, &i.win, i.ldisc, fmt);
113		break;
114	case GFLAG:
115		gprint(&i.t, &i.win, i.ldisc);
116		break;
117	}
118
119	for (i.set = i.wset = 0; *argv; ++argv) {
120		if (ksearch(&argv, &i))
121			continue;
122
123		if (csearch(&argv, &i))
124			continue;
125
126		if (msearch(&argv, &i))
127			continue;
128
129		if (isdigit(**argv)) {
130			int speed;
131
132			speed = atoi(*argv);
133			cfsetospeed(&i.t, speed);
134			cfsetispeed(&i.t, speed);
135			i.set = 1;
136			continue;
137		}
138
139		if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
140			gread(&i.t, *argv + sizeof("gfmt1") - 1);
141			continue;
142		}
143
144		warnx("illegal option -- %s", *argv);
145		usage();
146	}
147
148	if (i.set && tcsetattr(i.fd, 0, &i.t) < 0)
149		err(1, "tcsetattr");
150	if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0)
151		warn("TIOCSWINSZ");
152	exit(0);
153}
154
155void
156usage()
157{
158
159	(void)fprintf(stderr, "usage: stty: [-a|-e|-g] [-f file] [options]\n");
160	exit (1);
161}
162