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