67 lines
1.4 KiB
C
67 lines
1.4 KiB
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.
|
|
*
|
|
*/
|
|
|
|
#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, char **argv)
|
|
{
|
|
struct kbentry ke;
|
|
int i, j, fd;
|
|
char flags[MAX_NR_KEYMAPS];
|
|
|
|
if (argc >= 2 && argv[1][0] == '-')
|
|
bb_show_usage();
|
|
|
|
fd = xopen(CURRENT_VC, O_RDWR);
|
|
|
|
write(1, "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(1, 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(1, (void*)&ke.kb_value, 2);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
close(fd);
|
|
return EXIT_SUCCESS;
|
|
}
|