console14.txt

linux/kd.h文件中介绍了ioctl函数能够使用的命令

Example:

	#include <stdio.h>
	#include <fcntl.h>
	#include <unistd.h>
	#include <sys/stat.h>
	#include <linux/kd.h>
	#include <sys/types.h>
	#include <sys/ioctl.h>

	#define ERROR -1

	void main()
	{
          int fd;
          register int i;

          struct kbdiacr  kbdiacr;
          struct kbdiacrs kbdiacrs;

          /* To be used as the fd in ioctl(). */
	  if ((fd = open("/dev/console", O_NOCTTY)) == ERROR) {
	     perror("open");
	     exit(ERROR);
	  }

	  printf("w00w00!\n\n");

          if (ioctl(fd, KDGKBDIACR, &kbdiacrs) == ERROR) {
             perror("ioctl");
             close(fd);
             exit(ERROR);
 	  }

          printf("Number of entries in kbdiacrs: %d\n", kbdiacrs.kb_cnt);

          for (i = 0; i <= kbdiacrs.kb_cnt; i++) {
              kbdiacr = kbdiacrs.kbdiacr[i];

              printf("diacr - Character: %c, Hex: 0x%x\n",
                     kbdiacr.diacr, kbdiacr.diacr);

              printf("base - Character: %c, Hex: 0x%x\n",
		     kbdiacr.base, kbdiacr.base);

              printf("result - Char: %c, Hex: 0x%x\n\n",
		     kbdiacr.result, kbdiacr.result);
          }

          putchar('\n');
          close(fd);
      }