急急急急！！！！linux下应用程序权限问题
我写了一个应用程序其中用到了settimeofday函数，但是执行的时候说权限不够，怎么解决这个问题，大侠们我求解！！
[解决办法]

#include <stdio.h>
#include <stdlib.h>
#include<unistd.h>
#include <errno.h>
#include <time.h>
#include<sys/time.h>
#include <string.h>


int set_time(unsigned char *settime)
{
struct timeval new_tv;
 int ret;
time_t timep,timeq;
struct tm *p;
time(&timep);
p = localtime(&timep);

p->tm_year = settime[0]+2000-1900;
p->tm_mon = settime[1]-1;
p->tm_mday = settime[2];
p->tm_hour = settime[3];
p->tm_min = settime[4];
p->tm_sec = settime[5];

printf("%d %d %d %d %d %d \n",p->tm_year,p->tm_mon,p->tm_mday,p->tm_hour,p->tm_min,p->tm_sec);

 timeq = mktime(p);
 printf("timeq %ld\n",timeq);
 new_tv.tv_sec = (long)timeq;
 new_tv.tv_usec = 0;
 ret = settimeofday(&new_tv,NULL);
 if(ret == -1)
 {
 printf("settimeofday error.%s\n",strerror(errno));
 return ret;
 }
else  
 system("hwclock -w");
   
   return 0;
}

int main()
{
unsigned char timebuf[] = {13,07,05,17,25,55};
set_time(timebuf);

return 0;
}

root运行
丫的被一个头文件搞的老coredump~~~