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stty.c revision 1.19 
      1 /* $NetBSD: stty.c,v 1.19 2003/08/07 09:05:42 agc 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __COPYRIGHT("@(#) Copyright (c) 1989, 1991, 1993, 1994\n\
     35 	The Regents of the University of California.  All rights reserved.\n");
     36 #endif /* not lint */
     37 
     38 #ifndef lint
     39 #if 0
     40 static char sccsid[] = "@(#)stty.c	8.3 (Berkeley) 4/2/94";
     41 #else
     42 __RCSID("$NetBSD: stty.c,v 1.19 2003/08/07 09:05:42 agc Exp $");
     43 #endif
     44 #endif /* not lint */
     45 
     46 #include <sys/types.h>
     47 
     48 #include <ctype.h>
     49 #include <err.h>
     50 #include <errno.h>
     51 #include <fcntl.h>
     52 #include <stdio.h>
     53 #include <stdlib.h>
     54 #include <string.h>
     55 #include <unistd.h>
     56 
     57 #include "stty.h"
     58 #include "extern.h"
     59 
     60 int main(int, char *[]);
     61 
     62 int
     63 main(int argc, char *argv[])
     64 {
     65 	struct info i;
     66 	enum FMT fmt;
     67 	int ch;
     68 
     69 	setprogname(argv[0]);
     70 
     71 	fmt = STTY_NOTSET;
     72 	i.fd = STDIN_FILENO;
     73 
     74 	opterr = 0;
     75 	while (optind < argc &&
     76 	    strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
     77 	    (ch = getopt(argc, argv, "aef:g")) != -1)
     78 		switch(ch) {
     79 		case 'a':		/* undocumented: POSIX compatibility */
     80 			fmt = STTY_POSIX;
     81 			break;
     82 		case 'e':
     83 			fmt = STTY_BSD;
     84 			break;
     85 		case 'f':
     86 			if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
     87 				err(1, "%s", optarg);
     88 			break;
     89 		case 'g':
     90 			fmt = STTY_GFLAG;
     91 			break;
     92 		case '?':
     93 		default:
     94 			goto args;
     95 		}
     96 
     97 args:	argc -= optind;
     98 	argv += optind;
     99 
    100 	if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
    101 		err(1, "TIOCGETD");
    102 	if (tcgetattr(i.fd, &i.t) < 0)
    103 		err(1, "tcgetattr");
    104 	if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
    105 		warn("TIOCGWINSZ");
    106 
    107 	switch(fmt) {
    108 	case STTY_NOTSET:
    109 		if (*argv)
    110 			break;
    111 		/* FALLTHROUGH */
    112 	case STTY_BSD:
    113 	case STTY_POSIX:
    114 		print(&i.t, &i.win, i.ldisc, fmt);
    115 		break;
    116 	case STTY_GFLAG:
    117 		gprint(&i.t);
    118 		break;
    119 	}
    120 
    121 	for (i.set = i.wset = 0; *argv; ++argv) {
    122 		if (ksearch(&argv, &i))
    123 			continue;
    124 
    125 		if (csearch(&argv, &i))
    126 			continue;
    127 
    128 		if (msearch(&argv, &i))
    129 			continue;
    130 
    131 		if (isdigit((unsigned char)**argv)) {
    132 			int speed;
    133 
    134 			speed = atoi(*argv);
    135 			cfsetospeed(&i.t, speed);
    136 			cfsetispeed(&i.t, speed);
    137 			i.set = 1;
    138 			continue;
    139 		}
    140 
    141 		if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
    142 			gread(&i.t, *argv + sizeof("gfmt1") - 1);
    143 			i.set = 1;
    144 			continue;
    145 		}
    146 
    147 		warnx("illegal option -- %s", *argv);
    148 		usage();
    149 	}
    150 
    151 	if (i.set && tcsetattr(i.fd, 0, &i.t) < 0)
    152 		err(1, "tcsetattr");
    153 	if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0)
    154 		warn("TIOCSWINSZ");
    155 	exit(0);
    156 	/* NOTREACHED */
    157 }
    158 
    159 void
    160 usage(void)
    161 {
    162 
    163 	(void)fprintf(stderr, "usage: %s [-a|-e|-g] [-f file] [options]\n", getprogname());
    164 	exit(1);
    165 	/* NOTREACHED */
    166 }
    167