source: MondoRescue/branches/stable/mindi-busybox/console-tools/dumpkmap.c @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 2.1 KB
Line 
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 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23#include <errno.h>
24#include <fcntl.h>
25#include <stdio.h>
26#include <unistd.h>
27#include <string.h>
28#include <stdlib.h>
29#include <sys/ioctl.h>
30#include "busybox.h"
31
32/* From <linux/kd.h> */
33struct kbentry {
34    unsigned char kb_table;
35    unsigned char kb_index;
36    unsigned short kb_value;
37};
38#define KDGKBENT 0x4B46  /* gets one entry in translation table */
39
40/* From <linux/keyboard.h> */
41#define NR_KEYS 128
42#define MAX_NR_KEYMAPS 256
43
44int dumpkmap_main(int argc, char **argv)
45{
46    struct kbentry ke;
47    int i, j, fd;
48    char flags[MAX_NR_KEYMAPS], magic[] = "bkeymap";
49
50    if (argc >= 2 && *argv[1] == '-')
51        bb_show_usage();
52
53    fd = bb_xopen(CURRENT_VC, O_RDWR);
54
55    write(1, magic, 7);
56
57    /* Here we want to set everything to 0 except for indexes:
58     * [0-2] [4-6] [8-10] [12] */
59    memset(flags, 0x00, MAX_NR_KEYMAPS);
60    memset(flags, 0x01, 13);
61    flags[3] = flags[7] = flags[11] = 0;
62
63    /* dump flags */
64    write(1, flags, MAX_NR_KEYMAPS);
65
66    for (i = 0; i < MAX_NR_KEYMAPS; i++) {
67        if (flags[i] == 1) {
68            for (j = 0; j < NR_KEYS; j++) {
69                ke.kb_index = j;
70                ke.kb_table = i;
71                if (ioctl(fd, KDGKBENT, &ke) < 0) {
72                    bb_perror_msg("ioctl failed with %s, %s, %p",
73                        (char *)&ke.kb_index,
74                        (char *)&ke.kb_table,
75                        &ke.kb_value);
76                } else {
77                    write(1, (void*)&ke.kb_value, 2);
78                }
79            }
80        }
81    }
82    close(fd);
83    return EXIT_SUCCESS;
84}
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