+#ifdef USE_SETFILETIME
+ /* On native Windows, use SetFileTime(). See
+ <https://msdn.microsoft.com/en-us/library/ms724933.aspx>
+ <https://msdn.microsoft.com/en-us/library/ms724284.aspx> */
+ if (0 <= fd)
+ {
+ HANDLE handle;
+ FILETIME current_time;
+ FILETIME last_access_time;
+ FILETIME last_write_time;
+
+ handle = (HANDLE) _get_osfhandle (fd);
+ if (handle == INVALID_HANDLE_VALUE)
+ {
+ errno = EBADF;
+ return -1;
+ }
+
+ if (ts == NULL || ts[0].tv_nsec == UTIME_NOW || ts[1].tv_nsec == UTIME_NOW)
+ {
+ /* GetSystemTimeAsFileTime
+ <https://msdn.microsoft.com/en-us/library/ms724397.aspx>.
+ It would be overkill to use
+ GetSystemTimePreciseAsFileTime
+ <https://msdn.microsoft.com/en-us/library/hh706895.aspx>. */
+ GetSystemTimeAsFileTime (¤t_time);
+ }
+
+ if (ts == NULL || ts[0].tv_nsec == UTIME_NOW)
+ {
+ last_access_time = current_time;
+ }
+ else if (ts[0].tv_nsec == UTIME_OMIT)
+ {
+ last_access_time.dwLowDateTime = 0;
+ last_access_time.dwHighDateTime = 0;
+ }
+ else
+ {
+ ULONGLONG time_since_16010101 =
+ (ULONGLONG) ts[0].tv_sec * 10000000 + ts[0].tv_nsec / 100 + 116444736000000000LL;
+ last_access_time.dwLowDateTime = (DWORD) time_since_16010101;
+ last_access_time.dwHighDateTime = time_since_16010101 >> 32;
+ }
+
+ if (ts == NULL || ts[1].tv_nsec == UTIME_NOW)
+ {
+ last_write_time = current_time;
+ }
+ else if (ts[1].tv_nsec == UTIME_OMIT)
+ {
+ last_write_time.dwLowDateTime = 0;
+ last_write_time.dwHighDateTime = 0;
+ }
+ else
+ {
+ ULONGLONG time_since_16010101 =
+ (ULONGLONG) ts[1].tv_sec * 10000000 + ts[1].tv_nsec / 100 + 116444736000000000LL;
+ last_write_time.dwLowDateTime = (DWORD) time_since_16010101;
+ last_write_time.dwHighDateTime = time_since_16010101 >> 32;
+ }
+
+ if (SetFileTime (handle, NULL, &last_access_time, &last_write_time))
+ return 0;
+ else
+ {
+ DWORD sft_error = GetLastError ();
+ #if 0
+ fprintf (stderr, "fdutimens SetFileTime error 0x%x\n", (unsigned int) sft_error);
+ #endif
+ switch (sft_error)
+ {
+ case ERROR_ACCESS_DENIED: /* fd was opened without O_RDWR */
+ errno = EACCES; /* not specified by POSIX */
+ break;
+ default:
+ errno = EINVAL;
+ break;
+ }
+ return -1;
+ }
+ }
+#endif
+