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stty.c revision 1.10 
      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
     35 static 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
     41 /*static char sccsid[] = "from: @(#)stty.c	8.3 (Berkeley) 4/2/94";*/
     42 static char *rcsid = "$Id: stty.c,v 1.10 1994/09/20 04:52:12 mycroft Exp $";
     43 #endif /* not lint */
     44 
     45 #include <sys/types.h>
     46 
     47 #include <ctype.h>
     48 #include <err.h>
     49 #include <errno.h>
     50 #include <fcntl.h>
     51 #include <stdio.h>
     52 #include <stdlib.h>
     53 #include <string.h>
     54 #include <unistd.h>
     55 
     56 #include "stty.h"
     57 #include "extern.h"
     58 
     59 int
     60 main(argc, argv)
     61 	int argc;
     62 	char *argv[];
     63 {
     64 	struct info i;
     65 	enum FMT fmt;
     66 	int ch;
     67 
     68 	fmt = NOTSET;
     69 	i.fd = STDIN_FILENO;
     70 
     71 	opterr = 0;
     72 	while (optind < argc &&
     73 	    strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
     74 	    (ch = getopt(argc, argv, "aef:g")) != -1)
     75 		switch(ch) {
     76 		case 'a':		/* undocumented: POSIX compatibility */
     77 			fmt = POSIX;
     78 			break;
     79 		case 'e':
     80 			fmt = BSD;
     81 			break;
     82 		case 'f':
     83 			if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
     84 				err(1, "%s", optarg);
     85 			break;
     86 		case 'g':
     87 			fmt = GFLAG;
     88 			break;
     89 		case '?':
     90 		default:
     91 			goto args;
     92 		}
     93 
     94 args:	argc -= optind;
     95 	argv += optind;
     96 
     97 	if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
     98 		err(1, "TIOCGETD");
     99 	if (tcgetattr(i.fd, &i.t) < 0)
    100 		err(1, "tcgetattr");
    101 	if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
    102 		warn("TIOCGWINSZ");
    103 
    104 	switch(fmt) {
    105 	case NOTSET:
    106 		if (*argv)
    107 			break;
    108 		/* FALLTHROUGH */
    109 	case BSD:
    110 	case POSIX:
    111 		print(&i.t, &i.win, i.ldisc, fmt);
    112 		break;
    113 	case GFLAG:
    114 		gprint(&i.t, &i.win, i.ldisc);
    115 		break;
    116 	}
    117 
    118 	for (i.set = i.wset = 0; *argv; ++argv) {
    119 		if (ksearch(&argv, &i))
    120 			continue;
    121 
    122 		if (csearch(&argv, &i))
    123 			continue;
    124 
    125 		if (msearch(&argv, &i))
    126 			continue;
    127 
    128 		if (isdigit(**argv)) {
    129 			int speed;
    130 
    131 			speed = atoi(*argv);
    132 			cfsetospeed(&i.t, speed);
    133 			cfsetispeed(&i.t, speed);
    134 			i.set = 1;
    135 			continue;
    136 		}
    137 
    138 		if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
    139 			gread(&i.t, *argv + sizeof("gfmt1") - 1);
    140 			i.set = 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 
    155 void
    156 usage()
    157 {
    158 
    159 	(void)fprintf(stderr, "usage: stty: [-a|-e|-g] [-f file] [options]\n");
    160 	exit (1);
    161 }
    162