| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini kbd_mode implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 2007 Loic Grenie <loic.grenie@gmail.com>
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| 6 | * written using Andries Brouwer <aeb@cwi.nl>'s kbd_mode from
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| 7 | * console-utils v0.2.3, licensed under GNU GPLv2
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| 8 | *
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| 9 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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| 10 | */
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| 11 | #include "libbb.h"
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| 12 | #include <linux/kd.h>
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| 13 |
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| 14 | int kbd_mode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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| 15 | int kbd_mode_main(int argc UNUSED_PARAM, char **argv)
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| 16 | {
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| 17 | enum {
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| 18 | SCANCODE = (1 << 0),
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| 19 | ASCII = (1 << 1),
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| 20 | MEDIUMRAW = (1 << 2),
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| 21 | UNICODE = (1 << 3),
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| 22 | };
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| 23 | int fd;
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| 24 | unsigned opt;
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| 25 | const char *tty_name = CURRENT_TTY;
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| 26 |
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| 27 | opt = getopt32(argv, "sakuC:", &tty_name);
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| 28 | fd = xopen_nonblocking(tty_name);
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| 29 | opt &= 0xf; /* clear -C bit, see (*) */
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| 30 |
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| 31 | if (!opt) { /* print current setting */
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| 32 | const char *mode = "unknown";
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| 33 | int m;
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| 34 |
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| 35 | xioctl(fd, KDGKBMODE, &m);
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| 36 | if (m == K_RAW)
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| 37 | mode = "raw (scancode)";
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| 38 | else if (m == K_XLATE)
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| 39 | mode = "default (ASCII)";
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| 40 | else if (m == K_MEDIUMRAW)
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| 41 | mode = "mediumraw (keycode)";
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| 42 | else if (m == K_UNICODE)
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| 43 | mode = "Unicode (UTF-8)";
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| 44 | printf("The keyboard is in %s mode\n", mode);
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| 45 | } else {
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| 46 | /* here we depend on specific bits assigned to options (*) */
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| 47 | opt = opt & UNICODE ? 3 : opt >> 1;
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| 48 | /* double cast prevents warnings about widening conversion */
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| 49 | xioctl(fd, KDSKBMODE, (void*)(ptrdiff_t)opt);
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| 50 | }
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| 51 |
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| 52 | if (ENABLE_FEATURE_CLEAN_UP)
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| 53 | close(fd);
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| 54 | return EXIT_SUCCESS;
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| 55 | }
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