/*
 * Coerces the return value from gettimeofday() to always fall within
 * the time range starting at BASEDATE and ending at BASEDATE+TIMESPAN
 *
 * Todo: pick up BASEDATE and TIMESPAN from env variables
 */

#include <sys/time.h>
#include <sys/syscall.h>

#ifndef BASEDATE
#define BASEDATE 820472400		/* 1 Jan 1996 00:00:00 */

#define TIMESPAN ONELEAPYEAR	
/* really only want until 29 Dec 1996 (851835600), but this will do */
#endif

#define ONEDAY (24*60*60)
#define ONEMONTH (ONEDAY*31)
#define ONEYEAR (ONEDAY*365)
#define ONELEAPYEAR (ONEDAY*366)

#ifndef TIMESPAN
#define TIMESPAN ONEMONTH
#endif

int
gettimeofday(struct timeval *tp, struct timezone *tzp) {
	int ret;

	ret = __syscall(SYS_gettimeofday, 2, tp, tzp);
	if (ret == 0 && tp != NULL) {
		tp->tv_sec = ((tp->tv_sec - BASEDATE) % TIMESPAN) + BASEDATE;
	}
	return ret;
}