time/settimeofday.c

/*	A part of the Windows CE C Extra Library (celibc)
	Copyright 2007-2015 PC GO Ld.

	This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
*/

#include <sys/time.h>
#include <windows.h>
#include <shared.h>
//#include <errno.h>

int settimeofday(const struct timeval *tv, const struct timezone *tz) {
	if(!tv) return 0;

/*
	FILETIME ft = __time_t_to_filetime(tv->tv_sec);
	if(tv->tv_usec) {
		if(tv->tv_usec > 1000000) {
			errno = EINVAL;
			return -1;
		}
		ft.dwLowDateTime += tv->tv_usec * 10;
	}
*/
	FILETIME ft;
	SYSTEMTIME st;
	__timeval_to_filetime(tv, &ft);
	if(!FileTimeToSystemTime(&ft, &st)) return -1;
	if(!SetSystemTime(&st)) return -1;
	return 0;
}