console10.txt

来自「linux/kd.h文件中介绍了ioctl函数能够使用的命令」· 文本 代码 · 共 51 行

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 argc, char **argv)
	{
          int fd;
          long mode;

          if (argc < 2) {
             printf("Usage: %s <mode>\n\n", argv[0]);
             printf("Possible modes are:\n");
             printf("0x00 for raw mode\n");
             printf("0x01 for xlate mode (the default keyboard mode)\n");
             printf("0x02 for medium raw mode\n");
             printf("0x03 for Unicode mode\n\n");
             exit(1);
          }

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

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

          mode = atoi(argv[1]);
          if ((ioctl(fd, KDSKBMODE, mode)) == ERROR) {
	     perror("ioctl");
	     close(fd);
	     exit(ERROR);
	  }

          printf("Setting keyboard to ");
          if (mode == K_RAW) printf("raw mode.\n");
          else if (mode == K_XLATE) printf("xlate mode.\n");
          else if (mode == K_MEDIUMRAW) printf("medium raw mode.\n");
          else if (mode == K_UNICODE) printf("Unicode mode.\n");
	  else printf("0x0%x\n", mode); /* For future modes.\n");


	  close(fd);
	}