this.localPort = localPort;
        this.auth = auth;
        trees = new Vector();
        connectionState = 0;
    }

    synchronized SmbTree getSmbTree( String share, String service ) {
        SmbTree t;

        if( share == null ) {
            share = "IPC$";
        }
        for( Enumeration e = trees.elements(); e.hasMoreElements(); ) {
            t = (SmbTree)e.nextElement();

            f.createNewFile();
            boolean renamed = false;
            try {
                f.renameTo(tgt, true);
                Assert.assertFalse("Should not be able to rename between trees", true);
            }
            catch ( SmbUnsupportedOperationException e ) {
                try ( SmbTreeHandle th = defaultShareRoot.getTreeHandle() ) {
                    Assume.assumeTrue("Not SMB2", th.isSMB2());

            share = "IPC$";
        }

        synchronized ( this.trees ) {
            for ( SmbTreeImpl t : this.trees ) {
                if ( t.matches(share, service) ) {
                    return t.acquire();
                }
            }
            SmbTreeImpl t = new SmbTreeImpl(this, share, service);
            t.acquire();
            this.trees.add(t);
            return t;
        }
    }

import jcifs.internal.smb1.trans.nt.NtTransQuerySecurityDesc;
import jcifs.util.transport.TransportException;


/**
 * This class encapsulates the logic for switching tree connections
 * 
 * Switching trees can occur either when the tree has been disconnected by failure or idle-timeout - as well as on
 * DFS referrals.
 * 
 * @author mbechler
 *
 */
class SmbTreeConnection {

                this.service.equalsIgnoreCase( service ));
    }
    public boolean equals(Object obj) {
        if (obj instanceof SmbTree) {
            SmbTree tree = (SmbTree)obj;
            return matches(tree.share, tree.service);
        }
        return false;
    }
    void send( ServerMessageBlock request,
                            ServerMessageBlock response ) throws SmbException {

        if( isOpen() ) {
            return;
        }
        fid = open0( flags, access, attrs, options );
        opened = true;
        tree_num = tree.tree_num;
    }
    boolean isOpen() {
        boolean ans = opened && isConnected() && tree_num == tree.tree_num;
        return ans;
    }
    void close( int f, long lastWriteTime ) throws SmbException {

        if( log.level >= 3 )

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.smb2.tree;


import java.nio.charset.StandardCharsets;

import jcifs.CIFSContext;
import jcifs.Configuration;
import jcifs.internal.smb2.ServerMessageBlock2;
import jcifs.internal.smb2.ServerMessageBlock2Request;

    /**
     * Connect to the logon share
     * 
     * @throws SmbException
     */
    void treeConnectLogon () throws SmbException;


    /**
     * @param share
     * @param service
     * @return tree instance
     */
    SmbTree getSmbTree ( String share, String service );


    /**
     * Initiate reauthentication
     * 
     * @throws CIFSException
     */

        } else {
            throw new IllegalArgumentException( "Invalid mode" );
        }
        file.open( openFlags, access, SmbFile.ATTR_NORMAL, options );
        readSize = file.tree.session.transport.rcv_buf_size - 70;
        writeSize = file.tree.session.transport.snd_buf_size - 70;
        fp = 0L;
    }

    public int read() throws SmbException {
        if( read( tmp, 0, 1 ) == -1 ) {
            return -1;
        }

 * are "allowed". If all of the desired access bits are not "allowed"
 * the then same process is repeated for inherited ACEs.
 * <p>
 * For example, if user <tt>WNET\alice</tt> tries to open a file
 * with desired access bits <tt>0x00000003</tt> (<tt>FILE_READ_DATA |
 * FILE_WRITE_DATA</tt>) and the target file has the following security
 * descriptor ACEs:
 * <pre>