bin/stty/stty.c

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