blob: fe533d5221f2f6642407f68a790543e039c41cac [file] [log] [blame]
Erik Andersene49d5ec2000-02-08 19:58:47 +00001/* vi: set sw=4 ts=4: */
Eric Andersenc4996011999-10-20 22:08:37 +00002/*
3 * Mini loadkmap implementation for busybox
4 *
5 * Copyright (C) 1998 Enrique Zanardi <ezanardi@ull.es>
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
Eric Andersencc8ed391999-10-05 16:24:54 +000023#include "internal.h"
24#include <errno.h>
25#include <fcntl.h>
26#include <stdio.h>
27#include <linux/kd.h>
28#include <linux/keyboard.h>
29#include <sys/ioctl.h>
30
31
Eric Andersene77ae3a1999-10-19 20:03:34 +000032static const char loadkmap_usage[] = "loadkmap\n"
Erik Andersene49d5ec2000-02-08 19:58:47 +000033 "\n"
34
35 "\tLoad a binary keyboard translation table from standard input.\n"
36 "\n";
Eric Andersencc8ed391999-10-05 16:24:54 +000037
38
Erik Andersene49d5ec2000-02-08 19:58:47 +000039int loadkmap_main(int argc, char **argv)
40{
41 struct kbentry ke;
42 u_short *ibuff;
43 int i, j, fd, readsz, pos, ibuffsz = NR_KEYS * sizeof(u_short);
44 char flags[MAX_NR_KEYMAPS], magic[] = "bkeymap", buff[7];
Eric Andersencc8ed391999-10-05 16:24:54 +000045
Erik Andersene49d5ec2000-02-08 19:58:47 +000046 fd = open("/dev/tty0", O_RDWR);
47 if (fd < 0) {
48 fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
49 return 1;
Eric Andersencc8ed391999-10-05 16:24:54 +000050 }
Erik Andersene49d5ec2000-02-08 19:58:47 +000051
52 read(0, buff, 7);
53 if (0 != strncmp(buff, magic, 7)) {
54 fprintf(stderr, "This is not a valid binary keymap.\n");
55 return 1;
56 }
57
58 if (MAX_NR_KEYMAPS != read(0, flags, MAX_NR_KEYMAPS)) {
59 fprintf(stderr, "Error reading keymap flags: %s\n",
60 strerror(errno));
61 return 1;
62 }
63
64 ibuff = (u_short *) malloc(ibuffsz);
65 if (!ibuff) {
66 fprintf(stderr, "Out of memory.\n");
67 return 1;
68 }
69
70 for (i = 0; i < MAX_NR_KEYMAPS; i++) {
71 if (flags[i] == 1) {
72 pos = 0;
73 while (pos < ibuffsz) {
74 if ((readsz = read(0, (char *) ibuff + pos, ibuffsz - pos))
75 < 0) {
76 fprintf(stderr, "Error reading keymap: %s\n",
77 strerror(errno));
78 return 1;
79 }
80 pos += readsz;
81 }
82 for (j = 0; j < NR_KEYS; j++) {
83 ke.kb_index = j;
84 ke.kb_table = i;
85 ke.kb_value = ibuff[j];
86 ioctl(fd, KDSKBENT, &ke);
87 }
88 }
89 }
Erik Andersen298854f2000-03-23 01:09:18 +000090 /* Don't bother to close files. Exit does that
91 * automagically, so we can save a few bytes */
92 /* close(fd); */
Erik Andersene49d5ec2000-02-08 19:58:47 +000093 return 0;
Eric Andersencc8ed391999-10-05 16:24:54 +000094}