if get4s(z[idx:]) != zcheader {
			break
		}
		meth := get2s(z[idx+10:])
		size := get4s(z[idx+24:])
		namelen := get2s(z[idx+28:])
		xlen := get2s(z[idx+30:])
		fclen := get2s(z[idx+32:])
		off := get4s(z[idx+42:])
		zname := z[idx+46 : idx+46+namelen]
		idx += 46 + namelen + xlen + fclen
		if zname != name {
			continue
		}
		if meth != 0 {

		limit = nameBufLen
	}
	// Avoid bugs in long file names
	// https://github.com/golang/tools/commit/5f9a5413737ba4b4f692214aebee582b47c8be74
	nameLen := bytes.IndexByte(nameBuf[:limit], 0)
	if nameLen < 0 {
		return 0, fmt.Errorf("failed to find terminating 0 byte in dirent")
	}
	return uint64(nameLen), nil

}

func direntReclen(buf []byte) (uint64, bool) {
	namelen, ok := direntNamlen(buf)
	return sizeOfDirent + namelen, ok
}

func direntNamlen(buf []byte) (uint64, bool) {
	return readInt(buf, unsafe.Offsetof(syscall.Dirent{}.Namlen), unsafe.Sizeof(syscall.Dirent{}.Namlen))
}

func direntType(buf []byte) FileMode {
	off := unsafe.Offsetof(syscall.Dirent{}.Type)

        bufferIndex += 8;
        bufferIndex += 8;

        int nameLen = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        byte[] nameBytes = new byte[nameLen];
        System.arraycopy(buffer, bufferIndex, nameBytes, 0, nameBytes.length);
        bufferIndex += nameLen;
        this.fileName = new String(nameBytes, StandardCharsets.UTF_16LE);
        return bufferIndex - start;

	}
	return
}

func regEnumValue(key syscall.Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) {

//sys	regSetValueEx(key syscall.Handle, valueName *uint16, reserved uint32, vtype uint32, buf *byte, bufsize uint32) (regerrno error) = advapi32.RegSetValueExW
//sys	regEnumValue(key syscall.Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegEnumValueW
//sys	regDeleteValue(key syscall.Handle, name *uint16) (regerrno error) = advapi32.RegDeleteValueW

const sizeOfDirent = 24

func direntReclen(buf []byte) (uint64, bool) {
	namelen, ok := direntNamlen(buf)
	return sizeOfDirent + namelen, ok
}

func direntNamlen(buf []byte) (uint64, bool) {
	return readInt(buf, unsafe.Offsetof(syscall.Dirent{}.Namlen), unsafe.Sizeof(syscall.Dirent{}.Namlen))
}

func direntNext(buf []byte) (uint64, bool) {

	Type    uint64
	Bsize   uint64
	Blocks  uint64
	Bfree   uint64
	Bavail  uint64
	Files   uint32
	Ffree   uint32
	Fsid    uint64
	Namelen uint64
	Frsize  uint64
	Flags   uint64
	_       [4]uint64
}

type direntLE struct {
	Reclen uint16
	Namlen uint16
	Ino    uint32
	Extra  uintptr
	Name   [256]byte
}

type Dirent struct {
	Ino    uint64
	Off    int64
	Reclen uint16

	// The length of the name of the directory entry.
	Namlen uint32
	// The type of the file referred to by this directory entry.
	Type Filetype
	// Name of the directory entry.
	Name *byte
}

func direntIno(buf []byte) (uint64, bool) {
	return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
}

func direntReclen(buf []byte) (uint64, bool) {
	namelen, ok := direntNamlen(buf)
	return 24 + namelen, ok
}

}

type IPv6Mreq struct {
	Multiaddr [16]byte /* in6_addr */
	Interface uint32
}

type Linger struct {
	Onoff  int32
	Linger int32
}

type Msghdr struct {
	Name       *byte
	Namelen    uint32
	Iov        *Iovec
	Iovlen     int32
	Control    *byte
	Controllen uint32
	Flags      int32
}

const (
	SizeofSockaddrInet4    = 0x10
	SizeofSockaddrInet6    = 0x1c