/* vi: set sw=4 ts=4: */ /* * Mini loadkmap implementation for busybox * * Copyright (C) 1998 Enrique Zanardi <ezanardi@ull.es> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include <errno.h> #include <fcntl.h> #include <stdio.h> #include <string.h> #include <stdlib.h> #include <unistd.h> #include <sys/ioctl.h> #include "busybox.h" #define BINARY_KEYMAP_MAGIC "bkeymap" /* From <linux/kd.h> */ struct kbentry { unsigned char kb_table; unsigned char kb_index; unsigned short kb_value; }; /* sets one entry in translation table */ #define KDSKBENT 0x4B47 /* From <linux/keyboard.h> */ #define NR_KEYS 128 #define MAX_NR_KEYMAPS 256 int loadkmap_main(int argc, char **argv) { struct kbentry ke; int i, j, fd; u_short ibuff[NR_KEYS]; char flags[MAX_NR_KEYMAPS]; char buff[7]; if (argc != 1) bb_show_usage(); fd = bb_xopen(CURRENT_VC, O_RDWR); if ((bb_full_read(0, buff, 7) != 7) || (strncmp(buff, BINARY_KEYMAP_MAGIC, 7) != 0)) bb_error_msg_and_die("This is not a valid binary keymap."); if (bb_full_read(0, flags, MAX_NR_KEYMAPS) != MAX_NR_KEYMAPS) bb_perror_msg_and_die("Error reading keymap flags"); for (i = 0; i < MAX_NR_KEYMAPS; i++) { if (flags[i] == 1) { bb_full_read(0, ibuff, NR_KEYS * sizeof(u_short)); for (j = 0; j < NR_KEYS; j++) { ke.kb_index = j; ke.kb_table = i; ke.kb_value = ibuff[j]; ioctl(fd, KDSKBENT, &ke); } } } /* Don't bother to close files. Exit does that * automagically, so we can save a few bytes */ /* close(fd); */ return EXIT_SUCCESS; }