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stty.c revision 1.13 
      1 /*	$NetBSD: stty.c,v 1.13 1997/07/20 21:31:27 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1989, 1991, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     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 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __COPYRIGHT("@(#) Copyright (c) 1989, 1991, 1993, 1994\n\
     39 	The Regents of the University of California.  All rights reserved.\n");
     40 #endif /* not lint */
     41 
     42 #ifndef lint
     43 #if 0
     44 static char sccsid[] = "@(#)stty.c	8.3 (Berkeley) 4/2/94";
     45 #else
     46 __RCSID("$NetBSD: stty.c,v 1.13 1997/07/20 21:31:27 christos Exp $");
     47 #endif
     48 #endif /* not lint */
     49 
     50 #include <sys/types.h>
     51 
     52 #include <ctype.h>
     53 #include <err.h>
     54 #include <errno.h>
     55 #include <fcntl.h>
     56 #include <stdio.h>
     57 #include <stdlib.h>
     58 #include <string.h>
     59 #include <unistd.h>
     60 
     61 #include "stty.h"
     62 #include "extern.h"
     63 
     64 int main __P((int, char *[]));
     65 
     66 int
     67 main(argc, argv)
     68 	int argc;
     69 	char *argv[];
     70 {
     71 	struct info i;
     72 	enum FMT fmt;
     73 	int ch;
     74 
     75 	fmt = NOTSET;
     76 	i.fd = STDIN_FILENO;
     77 
     78 	opterr = 0;
     79 	while (optind < argc &&
     80 	    strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
     81 	    (ch = getopt(argc, argv, "aef:g")) != -1)
     82 		switch(ch) {
     83 		case 'a':		/* undocumented: POSIX compatibility */
     84 			fmt = POSIX;
     85 			break;
     86 		case 'e':
     87 			fmt = BSD;
     88 			break;
     89 		case 'f':
     90 			if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
     91 				err(1, "%s", optarg);
     92 			break;
     93 		case 'g':
     94 			fmt = GFLAG;
     95 			break;
     96 		case '?':
     97 		default:
     98 			goto args;
     99 		}
    100 
    101 args:	argc -= optind;
    102 	argv += optind;
    103 
    104 	if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
    105 		err(1, "TIOCGETD");
    106 	if (tcgetattr(i.fd, &i.t) < 0)
    107 		err(1, "tcgetattr");
    108 	if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
    109 		warn("TIOCGWINSZ");
    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 			int 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 
    162 void
    163 usage()
    164 {
    165 
    166 	(void)fprintf(stderr, "usage: stty [-a|-e|-g] [-f file] [options]\n");
    167 	exit (1);
    168 }
    169