1 /* vi: set sw=4 ts=4: */
3 * Mini loadkmap implementation for busybox
5 * Copyright (C) 1998 Enrique Zanardi <ezanardi@ull.es>
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.
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.
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
28 #include <linux/keyboard.h>
29 #include <sys/ioctl.h>
32 static const char loadkmap_usage[] = "loadkmap\n"
33 #ifndef BB_FEATURE_TRIVIAL_HELP
34 "Loads a binary keyboard translation table from standard input.\n"
39 int loadkmap_main(int argc, char **argv)
43 int i, j, fd, readsz, pos, ibuffsz = NR_KEYS * sizeof(u_short);
44 char flags[MAX_NR_KEYMAPS], magic[] = "bkeymap", buff[7];
46 if (argc>=2 && *argv[1]=='-') {
47 usage(loadkmap_usage);
50 fd = open("/dev/tty0", O_RDWR);
52 fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
57 if (0 != strncmp(buff, magic, 7)) {
58 fprintf(stderr, "This is not a valid binary keymap.\n");
62 if (MAX_NR_KEYMAPS != read(0, flags, MAX_NR_KEYMAPS)) {
63 fprintf(stderr, "Error reading keymap flags: %s\n",
68 ibuff = (u_short *) malloc(ibuffsz);
70 fprintf(stderr, "Out of memory.\n");
74 for (i = 0; i < MAX_NR_KEYMAPS; i++) {
77 while (pos < ibuffsz) {
78 if ((readsz = read(0, (char *) ibuff + pos, ibuffsz - pos))
80 fprintf(stderr, "Error reading keymap: %s\n",
86 for (j = 0; j < NR_KEYS; j++) {
89 ke.kb_value = ibuff[j];
90 ioctl(fd, KDSKBENT, &ke);
94 /* Don't bother to close files. Exit does that
95 * automagically, so we can save a few bytes */