90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/*
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* Mini loadkmap implementation for busybox
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*
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* Copyright (C) 1998 Enrique Zanardi <ezanardi@ull.es>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "internal.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <linux/kd.h>
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#include <linux/keyboard.h>
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#include <sys/ioctl.h>
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static const char loadkmap_usage[] = "loadkmap\n"
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"\n"
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"\tLoad a binary keyboard translation table from standard input.\n"
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"\n";
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int
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loadkmap_main(int argc, char * * argv)
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{
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struct kbentry ke;
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u_short *ibuff;
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int i,j,fd,readsz,pos,ibuffsz=NR_KEYS * sizeof(u_short);
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char flags[MAX_NR_KEYMAPS],magic[]="bkeymap",buff[7];
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fd = open("/dev/tty0", O_RDWR);
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if (fd < 0) {
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fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
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return 1;
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}
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read(0,buff,7);
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if (0 != strncmp(buff,magic,7)) {
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fprintf(stderr, "This is not a valid binary keymap.\n");
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return 1;
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}
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if ( MAX_NR_KEYMAPS != read(0,flags,MAX_NR_KEYMAPS) ) {
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fprintf(stderr, "Error reading keymap flags: %s\n", strerror(errno));
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return 1;
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}
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ibuff=(u_short *) malloc(ibuffsz);
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if (!ibuff) {
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fprintf(stderr, "Out of memory.\n");
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return 1;
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}
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for(i=0; i<MAX_NR_KEYMAPS; i++) {
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if (flags[i]==1){
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pos=0;
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while (pos < ibuffsz) {
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if ( (readsz = read(0,(char *)ibuff+pos,ibuffsz-pos)) < 0 ) {
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fprintf(stderr, "Error reading keymap: %s\n",
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strerror(errno));
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return 1;
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}
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pos += readsz;
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}
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for(j=0; j<NR_KEYS; j++) {
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ke.kb_index = j;
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ke.kb_table = i;
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ke.kb_value = ibuff[j];
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ioctl(fd, KDSKBENT, &ke);
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}
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}
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}
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close (fd);
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return 0;
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}
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