blob: 13853672129d0837cdd44cc74091eb79c994f045
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Mini kbd_mode implementation for busybox |
4 | * |
5 | * Copyright (C) 2007 Loic Grenie <loic.grenie@gmail.com> |
6 | * written using Andries Brouwer <aeb@cwi.nl>'s kbd_mode from |
7 | * console-utils v0.2.3, licensed under GNU GPLv2 |
8 | * |
9 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
10 | */ |
11 | |
12 | //usage:#define kbd_mode_trivial_usage |
13 | //usage: "[-a|k|s|u] [-C TTY]" |
14 | //usage:#define kbd_mode_full_usage "\n\n" |
15 | //usage: "Report or set the keyboard mode\n" |
16 | //usage: "\n -a Default (ASCII)" |
17 | //usage: "\n -k Medium-raw (keyboard)" |
18 | //usage: "\n -s Raw (scancode)" |
19 | //usage: "\n -u Unicode (utf-8)" |
20 | //usage: "\n -C TTY Affect TTY instead of /dev/tty" |
21 | |
22 | #include "libbb.h" |
23 | #include <linux/kd.h> |
24 | |
25 | int kbd_mode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
26 | int kbd_mode_main(int argc UNUSED_PARAM, char **argv) |
27 | { |
28 | enum { |
29 | SCANCODE = (1 << 0), |
30 | ASCII = (1 << 1), |
31 | MEDIUMRAW = (1 << 2), |
32 | UNICODE = (1 << 3), |
33 | }; |
34 | int fd; |
35 | unsigned opt; |
36 | const char *tty_name = CURRENT_TTY; |
37 | |
38 | opt = getopt32(argv, "sakuC:", &tty_name); |
39 | fd = xopen_nonblocking(tty_name); |
40 | opt &= 0xf; /* clear -C bit, see (*) */ |
41 | |
42 | if (!opt) { /* print current setting */ |
43 | const char *mode = "unknown"; |
44 | int m; |
45 | |
46 | xioctl(fd, KDGKBMODE, &m); |
47 | if (m == K_RAW) |
48 | mode = "raw (scancode)"; |
49 | else if (m == K_XLATE) |
50 | mode = "default (ASCII)"; |
51 | else if (m == K_MEDIUMRAW) |
52 | mode = "mediumraw (keycode)"; |
53 | else if (m == K_UNICODE) |
54 | mode = "Unicode (UTF-8)"; |
55 | printf("The keyboard is in %s mode\n", mode); |
56 | } else { |
57 | /* here we depend on specific bits assigned to options (*) */ |
58 | opt = opt & UNICODE ? 3 : opt >> 1; |
59 | /* double cast prevents warnings about widening conversion */ |
60 | xioctl(fd, KDSKBMODE, (void*)(ptrdiff_t)opt); |
61 | } |
62 | |
63 | if (ENABLE_FEATURE_CLEAN_UP) |
64 | close(fd); |
65 | return EXIT_SUCCESS; |
66 | } |
67 |