1 /* loadkeys - load national keyboard map Author: Marcus Hampel
2 */
3 #include <sys/types.h>
4 #include <sys/ioctl.h>
5 #include <minix/keymap.h>
6 #include <fcntl.h>
7 #include <unistd.h>
8 #include <stdlib.h>
9 #include <stdio.h>
10 #include <string.h>
11 #include <errno.h>
12
13 #define KBD_DEVICE "/dev/console"
14
fatal(char * say)15 void fatal(char *say)
16 {
17 fprintf(stderr, "loadkeys: %s: %s\n", say, strerror(errno));
18 exit(EXIT_FAILURE);
19 }
20
21
usage(void)22 void usage(void)
23 {
24 fprintf(stderr, "usage: loadkeys <mapfile>\n");
25 exit(EXIT_FAILURE);
26 }
27
28
main(int argc,char * argv[])29 int main(int argc, char *argv[])
30 {
31 char sig[4];
32 keymap_t keymap;
33 int fd;
34
35 if (argc != 2)
36 usage();
37
38 if ((fd = open(argv[1], O_RDONLY)) < 0) fatal(argv[1]);
39
40 if (read(fd, sig, sizeof(sig)) < sizeof(sig)) fatal(argv[1]);
41
42 if (memcmp(sig, KEY_MAGIC, sizeof(sig)) != 0) {
43 fprintf(stderr, "loadkeys: %s: not a keymap file\n", argv[1]);
44 return EXIT_FAILURE;
45 }
46
47 if (read(fd, keymap, sizeof(keymap)) < sizeof(keymap)) fatal(argv[1]);
48
49 close(fd);
50
51 if ((fd = open(KBD_DEVICE, O_WRONLY)) < 0) fatal(KBD_DEVICE);
52
53 if (ioctl(fd, KIOCSMAP, keymap) < 0) fatal(KBD_DEVICE);
54
55 return EXIT_SUCCESS;
56 }
57