// relative to headerStart
    private static final int NTT_PRIMARY_SETUP_OFFSET       = 69;
    private static final int NTT_SECONDARY_PARAMETER_OFFSET  = 51;

    static final int NT_TRANSACT_QUERY_SECURITY_DESC = 6;

    int function;

    SmbComNtTransaction() {
        super();
        primarySetupOffset = NTT_PRIMARY_SETUP_OFFSET;
        secondaryParameterOffset = NTT_SECONDARY_PARAMETER_OFFSET;
    }

     * @param config
     * @param fid
     * @param securityInformation
     */
    public NtTransQuerySecurityDesc ( Configuration config, int fid, int securityInformation ) {
        super(config, NT_TRANSACT_QUERY_SECURITY_DESC);
        this.fid = fid;
        this.securityInformation = securityInformation;
        this.setupCount = 0;
        this.totalDataCount = 0;
        this.maxParameterCount = 4;
        this.maxDataCount = 65536;

    NtTransQuerySecurityDesc( int fid, int securityInformation ) {
        this.fid = fid;
        this.securityInformation = securityInformation;
        command = SMB_COM_NT_TRANSACT;
        function = NT_TRANSACT_QUERY_SECURITY_DESC;
        setupCount = 0;
        totalDataCount = 0;
        maxParameterCount = 4;
        maxDataCount = 32768;
        maxSetupCount = (byte)0x00;
    }

    @Override
    public ACE[] getSecurity ( boolean resolveSids ) throws IOException {
        try ( SmbTreeHandleImpl th = ensureTreeConnected() ) {
            SecurityDescriptor desc = querySecurity(th, SecurityInfo.DACL_SECURITY_INFO);
            ACE[] aces = desc.getAces();
            if ( aces != null ) {
                processAces(aces, resolveSids);
            }

            return aces;
        }
    }

    private static final int NTT_PRIMARY_SETUP_OFFSET = 71;
    private static final int NTT_SECONDARY_PARAMETER_OFFSET = 51;

    /**
     * 
     */
    public static final int NT_TRANSACT_QUERY_SECURITY_DESC = 0x6;

    /**
     * 
     */
    public static final int NT_TRANSACT_NOTIFY_CHANGE = 0x4;

    private final int function;


    protected SmbComNtTransaction ( Configuration config, int function ) {

        int f;
        ACE[] aces;

        f = open0( O_RDONLY, READ_CONTROL, 0, isDirectory() ? 1 : 0 );

        /*
         * NtTrans Query Security Desc Request / Response
         */

        NtTransQuerySecurityDesc request = new NtTransQuerySecurityDesc( f, 0x04 );
        NtTransQuerySecurityDescResponse response = new NtTransQuerySecurityDescResponse();