func (fs *fileStat) ModTime() time.Time {
	return time.Unix(0, fs.LastWriteTime.Nanoseconds())
}

// Sys returns syscall.Win32FileAttributeData for file fs.
func (fs *fileStat) Sys() any {
	return &syscall.Win32FileAttributeData{
		FileAttributes: fs.FileAttributes,
		CreationTime:   fs.CreationTime,
		LastAccessTime: fs.LastAccessTime,
		LastWriteTime:  fs.LastWriteTime,
		FileSizeHigh:   fs.FileSizeHigh,

}

func copyFindData(dst *Win32finddata, src *win32finddata1) {
	dst.FileAttributes = src.FileAttributes
	dst.CreationTime = src.CreationTime
	dst.LastAccessTime = src.LastAccessTime
	dst.LastWriteTime = src.LastWriteTime
	dst.FileSizeHigh = src.FileSizeHigh
	dst.FileSizeLow = src.FileSizeLow
	dst.Reserved0 = src.Reserved0
	dst.Reserved1 = src.Reserved1

	// The src is 1 element bigger than dst, but it must be NUL.

type SecurityAttributes struct {
	Length             uint16
	SecurityDescriptor uintptr
	InheritHandle      bool
}

type FILE_BASIC_INFO struct {
	CreationTime   int64
	LastAccessTime int64
	LastWriteTime  int64
	ChangedTime    int64
	FileAttributes uint32

	// Pad out to 8-byte alignment.
	//
	// Without this padding, TestChmod fails due to an argument validation error

}

func copyFindData(dst *Win32finddata, src *win32finddata1) {
	dst.FileAttributes = src.FileAttributes
	dst.CreationTime = src.CreationTime
	dst.LastAccessTime = src.LastAccessTime
	dst.LastWriteTime = src.LastWriteTime
	dst.FileSizeHigh = src.FileSizeHigh
	dst.FileSizeLow = src.FileSizeLow
	dst.Reserved0 = src.Reserved0
	dst.Reserved1 = src.Reserved1

	// The src is 1 element bigger than dst, but it must be NUL.

	r0, _, _ := Syscall9(procRegEnumKeyExW.Addr(), 8, uintptr(key), uintptr(index), uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(nameLen)), uintptr(unsafe.Pointer(reserved)), uintptr(unsafe.Pointer(class)), uintptr(unsafe.Pointer(classLen)), uintptr(unsafe.Pointer(lastWriteTime)), 0)
	if r0 != 0 {
		regerrno = Errno(r0)
	}
	return
}

//sys	regEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW

	r0, _, _ := syscall.Syscall9(procRegEnumKeyExW.Addr(), 8, uintptr(key), uintptr(index), uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(nameLen)), uintptr(unsafe.Pointer(reserved)), uintptr(unsafe.Pointer(class)), uintptr(unsafe.Pointer(classLen)), uintptr(unsafe.Pointer(lastWriteTime)), 0)
	if r0 != 0 {
		regerrno = syscall.Errno(r0)
	}

//sys	RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW

		{"ByHandleFileInformation.FileSizeHigh", Field, 0},
		{"ByHandleFileInformation.FileSizeLow", Field, 0},
		{"ByHandleFileInformation.LastAccessTime", Field, 0},
		{"ByHandleFileInformation.LastWriteTime", Field, 0},
		{"ByHandleFileInformation.NumberOfLinks", Field, 0},
		{"ByHandleFileInformation.VolumeSerialNumber", Field, 0},
		{"BytePtrFromString", Func, 1},
		{"ByteSliceFromString", Func, 1},