return this.getCause();
    }

    /**
     * @param e
     * @return a CIFS exception wrapped in an SmbException
     */
    static SmbException wrap(final CIFSException e) {
        if (e instanceof SmbException) {
            return (SmbException) e;
        }
        return new SmbException(e.getMessage(), e);
    }

    /** The root cause exception */
    private Throwable rootCause;

    SmbException() {
    }

    SmbException(final int errcode, final Throwable rootCause) {
        super(getMessageByCode(errcode));
        status = getStatusByCode(errcode);
        this.rootCause = rootCause;
    }

    SmbException(final String msg) {
        super(msg);
        status = NT_STATUS_UNSUCCESSFUL;
    }

     */
    public SmbException(String message, int errorCode, Category category) {
        this(message, errorCode, Severity.PERMANENT, category);
    }

    /**
     * Adds context information to the exception
     *
     * @param key the context key
     * @param value the context value
     * @return this exception for chaining
     */
    public SmbException withContext(String key, Object value) {

     * @param maxSize maximum allowed size
     * @throws SmbException if validation fails
     */
    public void validateBuffer(byte[] buffer, int expectedSize, int maxSize) throws SmbException {
        totalValidations.incrementAndGet();

        if (buffer == null) {
            failedValidations.incrementAndGet();
            throw new SmbException("Response buffer is null");
        }

     * @throws SmbException if an SMB error occurs
     */
    public SmbRandomAccessFile(final SmbFile file, final String mode) throws SmbException {
        this(file, mode, SmbConstants.DEFAULT_SHARING, false);
    }

    /**
     * Instantiate a random access file from a {@link SmbFile}
     *
     * @param file
     * @param mode
     * @throws SmbException
     */

    }

    @Test
    public void testDirectoryTraversal() throws Exception {
        assertThrows(SmbException.class, () -> {
            validator.validatePath("\\share\\..\\..\\windows\\system32");
        });
    }

    @Test
    public void testDirectoryTraversalDot() throws Exception {
        assertThrows(SmbException.class, () -> {
            validator.validatePath("\\share\\.\\..\\folder");
        });
    }

    void testRetriableExceptions() {
        // Test non-retriable errors
        SmbException accessDenied = new SmbException(NtStatus.NT_STATUS_ACCESS_DENIED, false);
        // Note: isRetriable() method does not exist in SmbException
        assertNotNull(accessDenied);

        SmbException notFound = new SmbException(NtStatus.NT_STATUS_OBJECT_NAME_NOT_FOUND, false);
        assertNotNull(notFound);

     * @throws SmbException if an I/O error occurs
     */
    public void close() throws SmbException {
        file.close();
    }

    @Override
    public final boolean readBoolean() throws SmbException {
        if (read(tmp, 0, 1) < 0) {
            throw new SmbException("EOF");
        }
        return tmp[0] != (byte) 0x00;
    }

    @Override
    public final byte readByte() throws SmbException {

        SmbException ex = new SmbException(0, root);
        assertSame(root, ex.getRootCause());
    }

    /**
     * Verify that the string-ctor sets status to {@code NT_STATUS_UNSUCCESSFUL}.
     */
    @Test
    @DisplayName("String constructor sets NT_STATUS_UNSUCCESSFUL status")
    void testStringConstructor() {
        SmbException ex = new SmbException("custom message");

            return transport.getRemoteHostName();
        }
    }

    /**
     * {@inheritDoc}
     *
     * @throws SmbException
     *
     * @see jcifs.SmbTreeHandle#getServerTimeZoneOffset()
     */
    @Override
    public long getServerTimeZoneOffset() throws SmbException {
        try (SmbSessionImpl session = this.treeConnection.getSession(); SmbTransportImpl transport = session.getTransport()) {