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