time/utimes.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 <string.h>
#include <errno.h>
#include <shared.h>

#if _WCE >= 3
void GetCurrentFT(FILETIME *);
#endif

int utimes(const char *filename, const struct timeval *times) {
	if(!filename) {
		errno = EFAULT;
		return -1;
	}
	if(!*filename) {
		errno = ENOENT;
		return -1;
	}

	FILETIME ft[2];
	if(times) {
		__timeval_to_filetime(times, ft);
		__timeval_to_filetime(times + 1, ft + 1);
	} else {
#if _WCE >= 3
		GetCurrentFT(ft);
#else
		SYSTEMTIME st;
		GetSystemTime(&st);
		if(!SystemTimeToFileTime(&st, ft)) return -1;
#endif
		ft[1] = (FILETIME)ft[0];
	}

	size_t len = strlen(filename) + 1;
	wchar_t wfile[len];
	if((int)mbstowcs(wfile, filename, len) < 0) return -1;
	void *fh = CreateFileW(wfile, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	if(fh == (void *)-1) return -1;
	int r = SetFileTime(fh, NULL, ft, ft + 1);
	if(!CloseHandle(fh)) return -1;
	return r;
}