timerfd_settime32.c raw

   1  #include "time32.h"
   2  #include <time.h>
   3  #include <sys/timerfd.h>
   4  
   5  int __timerfd_settime32(int t, int flags, const struct itimerspec32 *restrict val32, struct itimerspec32 *restrict old32)
   6  {
   7  	struct itimerspec old;
   8  	int r = timerfd_settime(t, flags, (&(struct itimerspec){
   9  		.it_interval.tv_sec = val32->it_interval.tv_sec,
  10  		.it_interval.tv_nsec = val32->it_interval.tv_nsec,
  11  		.it_value.tv_sec = val32->it_value.tv_sec,
  12  		.it_value.tv_nsec = val32->it_value.tv_nsec}),
  13  		old32 ? &old : 0);
  14  	if (r) return r;
  15  	/* The above call has already committed to success by changing the
  16  	 * timer setting, so we can't fail on out-of-range old value.
  17  	 * Since these are relative times, values large enough to overflow
  18  	 * don't make sense anyway. */
  19  	if (old32) {
  20  		old32->it_interval.tv_sec = old.it_interval.tv_sec;
  21  		old32->it_interval.tv_nsec = old.it_interval.tv_nsec;
  22  		old32->it_value.tv_sec = old.it_value.tv_sec;
  23  		old32->it_value.tv_nsec = old.it_value.tv_nsec;
  24  	}
  25  	return 0;
  26  }
  27