diff options
Diffstat (limited to 'package/toolbox/src/src/setkey.c')
-rw-r--r-- | package/toolbox/src/src/setkey.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/package/toolbox/src/src/setkey.c b/package/toolbox/src/src/setkey.c new file mode 100644 index 000000000..3b4fd700b --- /dev/null +++ b/package/toolbox/src/src/setkey.c @@ -0,0 +1,91 @@ +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <string.h> +#include <unistd.h> +#include <linux/kd.h> +#include <linux/vt.h> +#include <errno.h> +#include <sys/ioctl.h> + +static void setkey_usage(char *argv[]) +{ + fprintf(stderr, "%s [-t <table>] [-k <index>] [-v value] [-r] [-h]\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", argv[0]); +} + +#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 < 0) { + fprintf(stderr, "open %s: %s\n", TTYDEV, strerror(errno)); + return 1; + } + + do { + 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); + return 1; + case '?': + fprintf(stderr, "%s: invalid option -%c\n", + argv[0], optopt); + return 1; + } + } while (1); + + if(optind != argc || !did_something) { + setkey_usage(argv); + return 1; + } + + return 0; +} |