setitimer_time32.c raw

   1  #include "time32.h"
   2  #include <time.h>
   3  #include <sys/time.h>
   4  
   5  int __setitimer_time32(int which, const struct itimerval32 *restrict new32, struct itimerval32 *restrict old32)
   6  {
   7  	struct itimerval old;
   8  	int r = setitimer(which, (&(struct itimerval){
   9  		.it_interval.tv_sec = new32->it_interval.tv_sec,
  10  		.it_interval.tv_usec = new32->it_interval.tv_usec,
  11  		.it_value.tv_sec = new32->it_value.tv_sec,
  12  		.it_value.tv_usec = new32->it_value.tv_usec}), &old);
  13  	if (r) return r;
  14  	/* The above call has already committed to success by changing the
  15  	 * timer setting, so we can't fail on out-of-range old value.
  16  	 * Since these are relative times, values large enough to overflow
  17  	 * don't make sense anyway. */
  18  	if (old32) {
  19  		old32->it_interval.tv_sec = old.it_interval.tv_sec;
  20  		old32->it_interval.tv_usec = old.it_interval.tv_usec;
  21  		old32->it_value.tv_sec = old.it_value.tv_sec;
  22  		old32->it_value.tv_usec = old.it_value.tv_usec;
  23  	}
  24  	return 0;
  25  }
  26