Contents of /trunk/mkinitrd-magellan/busybox/console-tools/loadkmap.c
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 1720 byte(s)
-updated to busybox-1.17.1
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Mini loadkmap implementation for busybox |
4 | * |
5 | * Copyright (C) 1998 Enrique Zanardi <ezanardi@ull.es> |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
8 | */ |
9 | #include "libbb.h" |
10 | |
11 | #define BINARY_KEYMAP_MAGIC "bkeymap" |
12 | |
13 | /* From <linux/kd.h> */ |
14 | struct kbentry { |
15 | unsigned char kb_table; |
16 | unsigned char kb_index; |
17 | unsigned short kb_value; |
18 | }; |
19 | /* sets one entry in translation table */ |
20 | #define KDSKBENT 0x4B47 |
21 | |
22 | /* From <linux/keyboard.h> */ |
23 | #define NR_KEYS 128 |
24 | #define MAX_NR_KEYMAPS 256 |
25 | |
26 | int loadkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
27 | int loadkmap_main(int argc UNUSED_PARAM, char **argv) |
28 | { |
29 | struct kbentry ke; |
30 | int i, j, fd; |
31 | uint16_t ibuff[NR_KEYS]; |
32 | /* const char *tty_name = CURRENT_TTY; */ |
33 | RESERVE_CONFIG_BUFFER(flags, MAX_NR_KEYMAPS); |
34 | |
35 | /* When user accidentally runs "loadkmap FILE" |
36 | * instead of "loadkmap <FILE", we end up waiting for input from tty. |
37 | * Let's prevent it: */ |
38 | if (argv[1]) |
39 | bb_show_usage(); |
40 | /* bb_warn_ignoring_args(argv[1]); */ |
41 | fd = get_console_fd_or_die(); |
42 | /* or maybe: |
43 | opt = getopt32(argv, "C:", &tty_name); |
44 | fd = xopen_nonblocking(tty_name); |
45 | */ |
46 | |
47 | xread(STDIN_FILENO, flags, 7); |
48 | if (strncmp(flags, BINARY_KEYMAP_MAGIC, 7)) |
49 | bb_error_msg_and_die("not a valid binary keymap"); |
50 | |
51 | xread(STDIN_FILENO, flags, MAX_NR_KEYMAPS); |
52 | |
53 | for (i = 0; i < MAX_NR_KEYMAPS; i++) { |
54 | if (flags[i] == 1) { |
55 | xread(STDIN_FILENO, ibuff, NR_KEYS * sizeof(uint16_t)); |
56 | for (j = 0; j < NR_KEYS; j++) { |
57 | ke.kb_index = j; |
58 | ke.kb_table = i; |
59 | ke.kb_value = ibuff[j]; |
60 | ioctl(fd, KDSKBENT, &ke); |
61 | } |
62 | } |
63 | } |
64 | |
65 | if (ENABLE_FEATURE_CLEAN_UP) { |
66 | close(fd); |
67 | RELEASE_CONFIG_BUFFER(flags); |
68 | } |
69 | return EXIT_SUCCESS; |
70 | } |