access = SmbConstants.FILE_READ_DATA | SmbConstants.FILE_WRITE_DATA;
        } 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 {

            // one extra acquire to keep this open till the stream is released
            this.handle = this.file.openUnshared(this.openFlags, this.access, this.sharing, SmbConstants.ATTR_NORMAL, this.options).acquire();
            return this.handle;
        }
        return this.handle.acquire();
    }


    /**
     * Ensures that the file descriptor is openend
     *