b_ioctl.c

来自「Linux中的不间断数据保护模块实现代码」· C语言 代码 · 共 37 行

#include "cdp_blk.h"
#include <fcntl.h>	
#include <stdlib.h>	
#include <unistd.h>		
#include <sys/ioctl.h>		

main(int argc , char *argv[])
{
        struct Time T;
        int retval;
	
	int fd=open(DEVICE_FILE_NAME, 0);
	
	if (fd<0)
	{
	    printf("Can't open device file: %s\n", DEVICE_FILE_NAME);
	    exit(-1);
	}

        printf("Enter Recovery Time [hrs:min:sec]\n");
	scanf("%d%d%d",&T.hrs,&T.min,&T.sec);

 	printf("%d%d%d\n",T.hrs,T.min,T.sec);

	retval = ioctl(fd,GET_TIME,&T);	
	
	if(retval<0)
	{	
	        printf("IOCTL FAILED  !! : %d",retval);
	        exit(-1);
        }
        
	close(fd);
        return 0;  
}