github.com/afumu/libc@v0.0.6/musl/compat/time32/setitimer_time32.c (about)

     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  }