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stty.c revision 1.9 
      1 /*-
      2  * Copyright (c) 1989, 1991 The Regents of the University of California.
      3  * 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 char copyright[] =
     36 "@(#) Copyright (c) 1989, 1991 The Regents of the University of California.\n\
     37  All rights reserved.\n";
     38 #endif /* not lint */
     39 
     40 #ifndef lint
     41 /*static char sccsid[] = "from: @(#)stty.c	5.28 (Berkeley) 6/5/91";*/
     42 static char rcsid[] = "$Id: stty.c,v 1.9 1994/03/23 04:05:33 mycroft Exp $";
     43 #endif /* not lint */
     44 
     45 #include <sys/types.h>
     46 #include <err.h>
     47 #include <fcntl.h>
     48 #include <errno.h>
     49 #include <unistd.h>
     50 #include <stdio.h>
     51 #include <ctype.h>
     52 #include <stdlib.h>
     53 #include <string.h>
     54 #include "stty.h"
     55 #include "extern.h"
     56 
     57 void
     58 usage()
     59 {
     60 
     61 	fprintf(stderr, "usage: stty: [-eg] [-f file] [options]\n");
     62 	exit(1);
     63 }
     64 
     65 main(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 (argv[optind] &&
     78 	       strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
     79 	       (ch = getopt(argc, argv, "aef:g")) != EOF)
     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 
     99 args:	argc -= optind;
    100 	argv += optind;
    101 
    102 	if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
    103 		err(1, "TIOCGETD");
    104 	if (tcgetattr(i.fd, &i.t) < 0)
    105 		err(1, "tcgetattr");
    106 	if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
    107 		warn("TIOCGWINSZ");
    108 
    109 	switch(fmt) {
    110 	case NOTSET:
    111 		if (*argv)
    112 			break;
    113 		/* FALLTHROUGH */
    114 	case BSD:
    115 	case POSIX:
    116 		print(&i.t, &i.win, i.ldisc, fmt);
    117 		break;
    118 	case GFLAG:
    119 		gprint(&i.t, &i.win, i.ldisc);
    120 		break;
    121 	}
    122 
    123 	for (i.set = i.wset = 0; *argv; ++argv) {
    124 		if (ksearch(&argv, &i))
    125 			continue;
    126 
    127 		if (csearch(&argv, &i))
    128 			continue;
    129 
    130 		if (msearch(&argv, &i))
    131 			continue;
    132 
    133 		if (isdigit(**argv)) {
    134 			int speed;
    135 
    136 			speed = atoi(*argv);
    137 			cfsetospeed(&i.t, speed);
    138 			cfsetispeed(&i.t, speed);
    139 			i.set = 1;
    140 			continue;
    141 		}
    142 
    143 		if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
    144 			gread(&i.t, *argv + sizeof("gfmt1") - 1);
    145 			i.set = 1;
    146 			continue;
    147 		}
    148 
    149 		warnx("illegal option -- %s", *argv);
    150 		usage();
    151 	}
    152 
    153 	if (i.set && tcsetattr(i.fd, 0, &i.t) < 0)
    154 		err(1, "tcsetattr");
    155 	if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0)
    156 		warn("TIOCSWINSZ");
    157 	exit(0);
    158 }
    159