Contents of /tags/mkinitrd-6_2_3/busybox/console-tools/loadkmap.c
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Mon May 31 20:54:44 2010 UTC (14 years, 4 months ago) by niro
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File size: 1556 byte(s)
Mon May 31 20:54:44 2010 UTC (14 years, 4 months ago) by niro
File MIME type: text/plain
File size: 1556 byte(s)
tagged 'mkinitrd-6_2_3'
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 UNUSED_PARAM) |
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 | /* bb_warn_ignoring_args(argv[1]); */ |
36 | fd = get_console_fd_or_die(); |
37 | /* or maybe: |
38 | opt = getopt32(argv, "C:", &tty_name); |
39 | fd = xopen_nonblocking(tty_name); |
40 | */ |
41 | |
42 | xread(STDIN_FILENO, flags, 7); |
43 | if (strncmp(flags, BINARY_KEYMAP_MAGIC, 7)) |
44 | bb_error_msg_and_die("not a valid binary keymap"); |
45 | |
46 | xread(STDIN_FILENO, flags, MAX_NR_KEYMAPS); |
47 | |
48 | for (i = 0; i < MAX_NR_KEYMAPS; i++) { |
49 | if (flags[i] == 1) { |
50 | xread(STDIN_FILENO, ibuff, NR_KEYS * sizeof(uint16_t)); |
51 | for (j = 0; j < NR_KEYS; j++) { |
52 | ke.kb_index = j; |
53 | ke.kb_table = i; |
54 | ke.kb_value = ibuff[j]; |
55 | ioctl(fd, KDSKBENT, &ke); |
56 | } |
57 | } |
58 | } |
59 | |
60 | if (ENABLE_FEATURE_CLEAN_UP) { |
61 | close(fd); |
62 | RELEASE_CONFIG_BUFFER(flags); |
63 | } |
64 | return EXIT_SUCCESS; |
65 | } |