public boolean haveCapabilitiy ( int cap ) {
        return ( this.commonCapabilities & cap ) == cap;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.SmbNegotiationResponse#isDFSSupported()
     */
    @Override
    public boolean isDFSSupported () {
        return !getConfig().isDfsDisabled() && haveCapabilitiy(Smb2Constants.SMB2_GLOBAL_CAP_DFS);
    }


    /**
     * 

    static final int CAP_NONE = 0x0000;
    static final int CAP_RAW_MODE = 0x0001;
    static final int CAP_MPX_MODE = 0x0002;
    static final int CAP_UNICODE = 0x0004;
    static final int CAP_LARGE_FILES = 0x0008;
    static final int CAP_NT_SMBS = 0x0010;
    static final int CAP_RPC_REMOTE_APIS = 0x0020;
    static final int CAP_STATUS32 = 0x0040;
    static final int CAP_LEVEL_II_OPLOCKS = 0x0080;

    @Override
    public boolean haveCapabilitiy ( int cap ) {
        return ( this.capabilities & cap ) == cap;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.SmbNegotiationResponse#isDFSSupported()
     */
    @Override
    public boolean isDFSSupported () {
        return !getConfig().isDfsDisabled() && haveCapabilitiy(SmbConstants.CAP_DFS);
    }


    /**

        this.useNTSmbs = th.hasCapability(SmbConstants.CAP_NT_SMBS);
        if ( !this.useNTSmbs ) {
            log.debug("No support for NT SMBs");
        }

        // there seems to be a bug with some servers that causes corruption if using signatures +
        // CAP_LARGE_WRITE
        if ( th.hasCapability(SmbConstants.CAP_LARGE_WRITEX) && !th.areSignaturesActive() ) {

 * class, this class represents all of them. For many of the popular
 * error codes, constants and text messages like "The device is not ready"
 * are provided.
 * <p>
 * The jCIFS client maps DOS error codes to NTSTATUS codes. This means that
 * the user may recieve a different error from a legacy server than that of
 * a newer varient such as Windows NT and above. If you should encounter

                if (auth == NtlmPasswordAuthentication.ANONYMOUS) {
                    lmHash = new byte[0];
                    ntHash = new byte[0];
                    capabilities &= ~SmbConstants.CAP_EXTENDED_SECURITY;
                } else if (session.transport.server.encryptedPasswords) {
                    lmHash = auth.getAnsiHash( session.transport.server.encryptionKey );

        }

        DfsReferralDataInternal dr = null;
        long now = System.currentTimeMillis();
        synchronized ( this.domainsLock ) {
            /*
             * domains that can contain DFS points to maps of roots for each
             */
            Map<String, Map<String, CacheEntry<DfsReferralDataInternal>>> domains = getTrustedDomains(tf);
            if ( domains != null ) {
                if ( log.isTraceEnabled() ) {

                    th.send(new TransWaitNamedPipe(th.getConfig(), this.uncPath), new TransWaitNamedPipeResponse(th.getConfig()));
                }

                if ( th.hasCapability(SmbConstants.CAP_NT_SMBS) || this.uncPath.startsWith("\\pipe\\") ) {
                    this.handle = this.pipe.openUnshared(this.openFlags, this.access, this.sharing, SmbConstants.ATTR_NORMAL, 0);
                }
                else {

        writeSize = file.tree.session.transport.snd_buf_size - 70;

        useNTSmbs = file.tree.session.transport.hasCapability( ServerMessageBlock.CAP_NT_SMBS );
        if( useNTSmbs ) {
            reqx = new SmbComWriteAndX();
            rspx = new SmbComWriteAndXResponse();
        } else {
            req = new SmbComWrite();

        DfsReferral dr = null;
        long now = System.currentTimeMillis();

        if (DISABLED || root.equals("IPC$")) {
            return null;
        }
        /* domains that can contain DFS points to maps of roots for each
         */
        HashMap domains = getTrustedDomains(auth);
        if (domains != null) {
            domain = domain.toLowerCase();
            /* domain-based DFS root shares to links for each