busybox/console-tools/dumpkmap.c

/* vi: set sw=4 ts=4: */
/*
 * Mini dumpkmap implementation for busybox
 *
 * Copyright (C) Arne Bernin <arne@matrix.loopback.org>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 *
 */
/* no options, no getopt */

#include "libbb.h"

/* From <linux/kd.h> */
struct kbentry {
	unsigned char kb_table;
	unsigned char kb_index;
	unsigned short kb_value;
};
#define KDGKBENT 0x4B46  /* gets one entry in translation table */

/* From <linux/keyboard.h> */
#define NR_KEYS 128
#define MAX_NR_KEYMAPS 256

int dumpkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int dumpkmap_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
	struct kbentry ke;
	int i, j, fd;
	RESERVE_CONFIG_BUFFER(flags,MAX_NR_KEYMAPS);

/*	bb_warn_ignoring_args(argc>=2);*/

	fd = get_console_fd_or_die();

	write(STDOUT_FILENO, "bkeymap", 7);

	/* Here we want to set everything to 0 except for indexes:
	 * [0-2] [4-6] [8-10] [12] */
	memset(flags, 0x00, MAX_NR_KEYMAPS);
	memset(flags, 0x01, 13);
	flags[3] = flags[7] = flags[11] = 0;

	/* dump flags */
	write(STDOUT_FILENO, flags, MAX_NR_KEYMAPS);

	for (i = 0; i < MAX_NR_KEYMAPS; i++) {
		if (flags[i] == 1) {
			for (j = 0; j < NR_KEYS; j++) {
				ke.kb_index = j;
				ke.kb_table = i;
				if (!ioctl_or_perror(fd, KDGKBENT, &ke,
						"ioctl failed with %s, %s, %p",
						(char *)&ke.kb_index,
						(char *)&ke.kb_table,
						&ke.kb_value)
				) {
					write(STDOUT_FILENO, (void*)&ke.kb_value, 2);
				}
			}
		}
	}
	if (ENABLE_FEATURE_CLEAN_UP) {
		close(fd);
		RELEASE_CONFIG_BUFFER(flags);
	}
	return EXIT_SUCCESS;
}
1	niro	532	/* 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	niro	816	/* no options, no getopt */
11	niro	532
12	niro	816	#include "libbb.h"
13	niro	532
14			/* From <linux/kd.h> */
15			struct kbentry {
16			unsigned char kb_table;
17			unsigned char kb_index;
18			unsigned short kb_value;
19			};
20			#define KDGKBENT 0x4B46 /* gets one entry in translation table */
21
22			/* From <linux/keyboard.h> */
23			#define NR_KEYS 128
24			#define MAX_NR_KEYMAPS 256
25
26	niro	816	int dumpkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
27			int dumpkmap_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
28	niro	532	{
29			struct kbentry ke;
30			int i, j, fd;
31	niro	816	RESERVE_CONFIG_BUFFER(flags,MAX_NR_KEYMAPS);
32	niro	532
33	niro	816	/* bb_warn_ignoring_args(argc>=2);*/
34	niro	532
35	niro	816	fd = get_console_fd_or_die();
36	niro	532
37	niro	816	write(STDOUT_FILENO, "bkeymap", 7);
38	niro	532
39			/* Here we want to set everything to 0 except for indexes:
40			* [0-2] [4-6] [8-10] [12] */
41			memset(flags, 0x00, MAX_NR_KEYMAPS);
42			memset(flags, 0x01, 13);
43			flags[3] = flags[7] = flags[11] = 0;
44
45			/* dump flags */
46	niro	816	write(STDOUT_FILENO, flags, MAX_NR_KEYMAPS);
47	niro	532
48			for (i = 0; i < MAX_NR_KEYMAPS; i++) {
49			if (flags[i] == 1) {
50			for (j = 0; j < NR_KEYS; j++) {
51			ke.kb_index = j;
52			ke.kb_table = i;
53	niro	816	if (!ioctl_or_perror(fd, KDGKBENT, &ke,
54			"ioctl failed with %s, %s, %p",
55	niro	532	(char *)&ke.kb_index,
56			(char *)&ke.kb_table,
57	niro	816	&ke.kb_value)
58			) {
59			write(STDOUT_FILENO, (void*)&ke.kb_value, 2);
60	niro	532	}
61			}
62			}
63			}
64	niro	816	if (ENABLE_FEATURE_CLEAN_UP) {
65			close(fd);
66			RELEASE_CONFIG_BUFFER(flags);
67			}
68	niro	532	return EXIT_SUCCESS;
69			}