src/kbd_mode.c

   1 /*
   2  * kbd_mode: report and set keyboard mode - aeb, 940406
   3  *
   4  * If you make \215A\201 an alias for "kbd_mode -a", and you are
   5  * in raw mode, then hitting F7 = (two keys) will return you to sanity.
   6  */
   7
   8 #include <fcntl.h>
   9 #include <stdio.h>
  10 #include <unistd.h>
  11 #include <sys/ioctl.h>
  12 #include <linux/types.h>
  13 #include <linux/kd.h>
  14 #include "getfd.h"
  15 #include "nls.h"
  16 #include "version.h"
  17
  18 static void __attribute__ ((noreturn))
  19 usage(void){
  20     fprintf(stderr, _("usage: kbd_mode [-a|-u|-k|-s] [-C device]\n"));
  21     exit(1);
  22 }
  23
  24 int
  25 main(int argc, char *argv[]){
  26         int fd, mode, c, n = 0;
  27         char *console = NULL;
  28
  29         set_progname(argv[0]);
  30
  31         setlocale(LC_ALL, "");
  32         bindtextdomain(PACKAGE_NAME, LOCALEDIR);
  33         textdomain(PACKAGE_NAME);
  34
  35         if (argc == 2 && !strcmp(argv[1], "-V"))
  36             print_version_and_exit();
  37
  38         while ((c = getopt(argc, argv, "auskC:")) != EOF) {
  39                 switch (c) {
  40                 case 'a':
  41                         if (n > 0)
  42                             usage ();
  43                         mode = K_XLATE;
  44                         n++;
  45                         break;
  46                 case 'u':
  47                         if (n > 0)
  48                             usage ();
  49                         mode = K_UNICODE;
  50                         n++;
  51                         break;
  52                 case 's':
  53                         if (n > 0)
  54                             usage ();
  55                         mode = K_RAW;
  56                         n++;
  57                         break;
  58                 case 'k':
  59                         if (n > 0)
  60                             usage ();
  61                         mode = K_MEDIUMRAW;
  62                         n++;
  63                         break;
  64                 case 'C':
  65                         if (!optarg || !optarg[0])
  66                             usage ();
  67                         console = optarg;
  68                         break;
  69                 default:
  70                         usage();
  71                 }
  72         }
  73
  74         fd = getfd(console);
  75
  76         if (n == 0) {
  77             /* report mode */
  78             if (ioctl(fd, KDGKBMODE, &mode)) {
  79                 perror("KDGKBMODE");
  80                 fprintf(stderr, _("kbd_mode: error reading keyboard mode\n"));
  81                 exit(1);
  82             }
  83             switch(mode) {
  84               case K_RAW:
  85                 printf(_("The keyboard is in raw (scancode) mode\n"));
  86                 break;
  87               case K_MEDIUMRAW:
  88                 printf(_("The keyboard is in mediumraw (keycode) mode\n"));
  89                 break;
  90               case K_XLATE:
  91                 printf(_("The keyboard is in the default (ASCII) mode\n"));
  92                 break;
  93               case K_UNICODE:
  94                 printf(_("The keyboard is in Unicode (UTF-8) mode\n"));
  95                 break;
  96               default:
  97                 printf(_("The keyboard is in some unknown mode\n"));
  98             }
  99             exit(0);
 100         }
 101
 102         if (ioctl(fd, KDSKBMODE, mode)) {
 103                 perror("KDSKBMODE");
 104                 fprintf(stderr, _("%s: error setting keyboard mode\n"), progname);
 105                 exit(1);
 106         }
 107         exit(0);
 108 }