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};
38static const int KDGKBENT = 0x4B46;  /* gets one entry in translation table */
39
40/* From <linux/keyboard.h> */
41static const int NR_KEYS = 128;
42static const int 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		show_usage();
52	}
53
54	fd = open(CURRENT_VC, O_RDWR);
55	if (fd < 0) {
56		perror_msg("Error opening " CURRENT_VC);
57		return EXIT_FAILURE;
58	}
59
60	write(1, magic, 7);
61
62	for (i=0; i < MAX_NR_KEYMAPS; i++) flags[i]=0;
63	flags[0]=1;
64	flags[1]=1;
65	flags[2]=1;
66	flags[4]=1;
67	flags[5]=1;
68	flags[6]=1;
69	flags[8]=1;
70	flags[9]=1;
71	flags[10]=1;
72	flags[12]=1;
73
74	/* dump flags */
75	for (i=0; i < MAX_NR_KEYMAPS; i++) write(1,&flags[i],1);
76
77	for (i = 0; i < MAX_NR_KEYMAPS; i++) {
78		if (flags[i] == 1) {
79			for (j = 0; j < NR_KEYS; j++) {
80				ke.kb_index = j;
81				ke.kb_table = i;
82				if (ioctl(fd, KDGKBENT, &ke) < 0) {
83
84					error_msg("ioctl returned: %s, %s, %s, %xqq", strerror(errno),(char *)&ke.kb_index,(char *)&ke.kb_table,(int)&ke.kb_value);
85					}
86				else {
87					write(1,(void*)&ke.kb_value,2);
88					}
89
90			}
91		}
92	}
93	close(fd);
94	return EXIT_SUCCESS;
95}
96