bin/stty/stty.c

   1 /* $NetBSD: stty.c,v 1.20 2008/05/26 14:21:08 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. 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\
  35  The Regents of the University of California.  All rights reserved.");
  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 1.20 2008/05/26 14:21:08 christos 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 <locale.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56 #include <unistd.h>
  57
  58 #include "stty.h"
  59 #include "extern.h"
  60
  61 int main(int, char *[]);
  62
  63 int
  64 main(int argc, char *argv[])
  65 {
  66         struct info i;
  67         enum FMT fmt;
  68         int ch;
  69
  70         setprogname(argv[0]);
  71         (void)setlocale(LC_ALL, "");
  72
  73         fmt = STTY_NOTSET;
  74         i.fd = STDIN_FILENO;
  75
  76         opterr = 0;
  77         while (optind < argc &&
  78             strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
  79             (ch = getopt(argc, argv, "aef:g")) != -1)
  80                 switch(ch) {
  81                 case 'a':               /* undocumented: POSIX compatibility */
  82                         fmt = STTY_POSIX;
  83                         break;
  84                 case 'e':
  85                         fmt = STTY_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 = STTY_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 STTY_NOTSET:
 111                 if (*argv)
 112                         break;
 113                 /* FALLTHROUGH */
 114         case STTY_BSD:
 115         case STTY_POSIX:
 116                 print(&i.t, &i.win, i.ldisc, fmt);
 117                 break;
 118         case STTY_GFLAG:
 119                 gprint(&i.t);
 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((unsigned char)**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         /* NOTREACHED */
 159 }
 160
 161 void
 162 usage(void)
 163 {
 164
 165         (void)fprintf(stderr, "usage: %s [-a|-e|-g] [-f file] [options]\n", getprogname());
 166         exit(1);
 167         /* NOTREACHED */
 168 }