s_IFREG  = 0x8000
	s_IFBLK  = 0x6000
	s_IFDIR  = 0x4000
	s_IFCHR  = 0x2000
	s_IFIFO  = 0x1000
	s_ISUID  = 0x800
	s_ISGID  = 0x400
	s_ISVTX  = 0x200

	msdosDir      = 0x10
	msdosReadOnly = 0x01
)

// Mode returns the permission and mode bits for the [FileHeader].
func (h *FileHeader) Mode() (mode fs.FileMode) {
	switch h.CreatorVersion >> 8 {
	case creatorUnix, creatorMacOSX:

    static final byte SMB_COM_NEGOTIATE = (byte) 0x72;
    static final byte SMB_COM_SESSION_SETUP_ANDX = (byte) 0x73;
    static final byte SMB_COM_LOGOFF_ANDX = (byte) 0x74;
    static final byte SMB_COM_TREE_CONNECT_ANDX = (byte) 0x75;
    static final byte SMB_COM_NT_TRANSACT = (byte) 0xA0;
    static final byte SMB_COM_NT_TRANSACT_SECONDARY = (byte) 0xA1;

	//TODO: JBE .+$0x11                     // 7611
	//TODO: JE .+$0x11223344                // 480f8444332211 or 0f8444332211
	//TODO: JE .+$0x11                      // 7411
	//TODO: JECXZ .+$0x11                   // e311
	//TODO: JG .+$0x11223344                // 0f8f44332211 or 480f8f44332211
	//TODO: JG .+$0x11                      // 7f11
	//TODO: JGE .+$0x11223344               // 480f8d44332211 or 0f8d44332211

  }

  @GwtIncompatible // Chars.fromByteArray, Chars.toByteArray
  public void testByteArrayRoundTripsFails() {
    assertThrows(IllegalArgumentException.class, () -> Chars.fromByteArray(new byte[] {0x11}));
  }

  public void testEnsureCapacity() {
    assertThat(Chars.ensureCapacity(EMPTY, 0, 1)).isSameInstanceAs(EMPTY);
    assertThat(Chars.ensureCapacity(ARRAY1, 0, 1)).isSameInstanceAs(ARRAY1);

        @DisplayName("Test SMB command constants have correct values")
        void testSMBCommandConstants() {
            assertEquals((byte) 0x00, ServerMessageBlock.SMB_COM_CREATE_DIRECTORY);
            assertEquals((byte) 0x01, ServerMessageBlock.SMB_COM_DELETE_DIRECTORY);
            assertEquals((byte) 0x04, ServerMessageBlock.SMB_COM_CLOSE);
            assertEquals((byte) 0x06, ServerMessageBlock.SMB_COM_DELETE);

     */
    private static byte[] messageHeader(int length) {
        byte[] h = new byte[4];
        h[0] = (byte) SessionServicePacket.SESSION_MESSAGE;
        h[1] = (byte) ((length >> 16) & 0x01);
        h[2] = (byte) ((length >> 8) & 0xFF);
        h[3] = (byte) (length & 0xFF);
        return h;
    }

    /**
     * Creates a NetBIOS keep-alive header.

### 3.1 Lease State Flags
```java
public class Smb2LeaseState {
    // Lease state flags (can be combined)
    public static final int SMB2_LEASE_NONE           = 0x00;
    public static final int SMB2_LEASE_READ_CACHING   = 0x01;  // R - Read caching
    public static final int SMB2_LEASE_HANDLE_CACHING = 0x02;  // H - Handle caching  
    public static final int SMB2_LEASE_WRITE_CACHING  = 0x04;  // W - Write caching
    
    // Common combinations

 *
 * <p><b>Compatibility note:</b> Throughout this API, multibyte values are always interpreted in
 * <i>little-endian</i> order. That is, hashing the byte array {@code {0x01, 0x02, 0x03, 0x04}} is
 * equivalent to hashing the {@code int} value {@code 0x04030201}. If this isn't what you need,
 * methods such as {@link Integer#reverseBytes} and {@link Ints#toByteArray} will help.
 *

        // Verify content
        assertEquals(SmbComTransaction.TRANS2_QUERY_FS_INFORMATION, buffer[0]);
        assertEquals(0x00, buffer[1]);
        assertEquals(0x03, buffer[2]); // Low byte of 0x0103
        assertEquals(0x01, buffer[3]); // High byte of 0x0103
    }

    @DisplayName("Test toString with different information levels")
    @ParameterizedTest
    @CsvSource({ "-1, fff", // SMB_INFO_ALLOCATION

    @DisplayName("Test attributes with OR operation")
    void testAttributesWithOrOperation() {
        // The constructor ORs attributes with 0x80
        trans2SetFileInfo = new Trans2SetFileInformation(config, TEST_FID, 0x01, // FILE_ATTRIBUTE_READONLY
                TEST_CREATE_TIME, TEST_LAST_WRITE_TIME, TEST_LAST_ACCESS_TIME);

        // The constructor should create FileBasicInfo with attributes | 0x80