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#include <sys/ioctl.h>
#include <sys/utsname.h>
#include <ctype.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <time.h>
#include <stdio.h>

struct linux_rtc_time {
	        int tm_sec;
	        int tm_min;
	        int tm_hour;
	        int tm_mday;
	        int tm_mon;
	        int tm_year;
	        int tm_wday;
	        int tm_yday;
	        int tm_isdst;
};
#define RTC_SET_TIME   _IOW('p', 0x0a, struct linux_rtc_time) /* Set RTC time    */
#define RTC_RD_TIME    _IOR('p', 0x09, struct linux_rtc_time) /* Read RTC time   */

int main()
	{
	        int rtc;
	        struct tm tm;
		time_t t;
		struct timeval tv = { 0, 0 };
	        struct timezone tz = { 0, 0 };
		int utc = 1;
	
	        if ( gettimeofday ( &tv, &tz ))
	                printf( "gettimeofday() failed" );
	
	        t = tv.tv_sec;
		
		
	        return 0;
	        if (( rtc = open ( "/dev/rtc0", O_WRONLY )) < 0 ) {
	                if (( rtc = open ( "/dev/misc/rtc0", O_WRONLY )) < 0 )
	                        printf( "Could not access RTC" );
	        }
	
	        tm = *( utc ? gmtime ( &t ) : localtime ( &t ));
	        tm.tm_isdst = 0;
	
	        if ( ioctl ( rtc, RTC_SET_TIME, &tm ) < 0 )
	                printf( "Could not set the RTC time" );
	
	        close ( rtc );
		return 0;
	}

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