Contents of /trunk/mkinitrd-magellan/busybox/console-tools/dumpkmap.c
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 1411 byte(s)
Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 1411 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Mini dumpkmap implementation for busybox |
4 | * |
5 | * Copyright (C) Arne Bernin <arne@matrix.loopback.org> |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
8 | * |
9 | */ |
10 | |
11 | #include "busybox.h" |
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 | #define KDGKBENT 0x4B46 /* gets one entry in translation table */ |
20 | |
21 | /* From <linux/keyboard.h> */ |
22 | #define NR_KEYS 128 |
23 | #define MAX_NR_KEYMAPS 256 |
24 | |
25 | int dumpkmap_main(int argc, char **argv) |
26 | { |
27 | struct kbentry ke; |
28 | int i, j, fd; |
29 | char flags[MAX_NR_KEYMAPS], magic[] = "bkeymap"; |
30 | |
31 | if (argc >= 2 && *argv[1] == '-') |
32 | bb_show_usage(); |
33 | |
34 | fd = xopen(CURRENT_VC, O_RDWR); |
35 | |
36 | write(1, magic, 7); |
37 | |
38 | /* Here we want to set everything to 0 except for indexes: |
39 | * [0-2] [4-6] [8-10] [12] */ |
40 | memset(flags, 0x00, MAX_NR_KEYMAPS); |
41 | memset(flags, 0x01, 13); |
42 | flags[3] = flags[7] = flags[11] = 0; |
43 | |
44 | /* dump flags */ |
45 | write(1, flags, MAX_NR_KEYMAPS); |
46 | |
47 | for (i = 0; i < MAX_NR_KEYMAPS; i++) { |
48 | if (flags[i] == 1) { |
49 | for (j = 0; j < NR_KEYS; j++) { |
50 | ke.kb_index = j; |
51 | ke.kb_table = i; |
52 | if (ioctl(fd, KDGKBENT, &ke) < 0) { |
53 | bb_perror_msg("ioctl failed with %s, %s, %p", |
54 | (char *)&ke.kb_index, |
55 | (char *)&ke.kb_table, |
56 | &ke.kb_value); |
57 | } else { |
58 | write(1, (void*)&ke.kb_value, 2); |
59 | } |
60 | } |
61 | } |
62 | } |
63 | close(fd); |
64 | return EXIT_SUCCESS; |
65 | } |