nsz Git - musl/blob - compat/time32/setitimer_time32.c

   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         old32->it_interval.tv_sec = old.it_interval.tv_sec;
  19         old32->it_interval.tv_usec = old.it_interval.tv_usec;
  20         old32->it_value.tv_sec = old.it_value.tv_sec;
  21         old32->it_value.tv_usec = old.it_value.tv_usec;
  22         return 0;
  23 }