blob: 9c75cb8f947e7f3b904018914b4d2faa5000a33b [file] [log] [blame] [raw]
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <linux/kd.h>
#include <linux/vt.h>
#include <errno.h>
#include <getopt.h>
#include <sys/ioctl.h>
static void setkey_usage(const char *name) {
fprintf(stderr, "Usage: %s [-t <table>] [-k <index>] [-v <value>] [-r] [-h]\n\n"
" -t <table> Select table\n"
" -k <index> Select key\n"
" -v <value> Set entry\n"
" -r Read current entry\n"
" -h Print help\n\n", name);
}
#define TTYDEV "/dev/tty0"
int main(int argc, char *argv[]) {
int fd;
struct kbentry kbe;
int did_something = 0;
kbe.kb_table = 0;
kbe.kb_index = -1;
kbe.kb_value = 0;
fd = open(TTYDEV, O_RDWR | O_SYNC);
if(fd == -1) {
//fprintf(stderr, "open " TTYDEV ": %s\n", strerror(errno));
perror(TTYDEV);
return 1;
}
while(1) {
int c, ret;
c = getopt(argc, argv, "t:k:v:hr");
if(c == EOF) break;
switch (c) {
case 't':
kbe.kb_table = strtol(optarg, NULL, 0);
break;
case 'k':
kbe.kb_index = strtol(optarg, NULL, 0);
break;
case 'v':
kbe.kb_value = strtol(optarg, NULL, 0);
ret = ioctl(fd, KDSKBENT, &kbe);
if (ret < 0) {
fprintf(stderr, "KDSKBENT %d %d %d failed: %s\n",
kbe.kb_table, kbe.kb_index, kbe.kb_value, strerror(errno));
return 1;
}
did_something = 1;
break;
case 'r':
ret = ioctl(fd, KDGKBENT, &kbe);
if (ret < 0) {
fprintf(stderr, "KDGKBENT %d %d failed: %s\n",
kbe.kb_table, kbe.kb_index, strerror(errno));
return 1;
}
printf("0x%x 0x%x 0x%x\n", kbe.kb_table, kbe.kb_index, kbe.kb_value);
did_something = 1;
break;
case 'h':
setkey_usage(argv[0]);
return 1;
case '?':
fprintf(stderr, "%s: invalid option -%c\n", argv[0], optopt);
return 1;
}
}
if(optind != argc || !did_something) {
setkey_usage(argv[0]);
return -1;
}
return 0;
}