return (int) ( ( this.fp - start ) > 0L ? this.fp - start : -1 );
                        }
                        this.fp += n;
                        off += n;
                        len -= n;
                        continue;
                    }

                    SmbComReadAndX request = new SmbComReadAndX(th.getConfig(), fd.getFid(), this.fp, r, null);

            }
            if(( n = response.dataLength ) <= 0 ) {
                return (int)((fp - start) > 0L ? fp - start : -1);
            }
            fp += n;
            len -= n;
            response.off += n;
        } while( len > 0 && n == r );

        return (int)(fp - start);
    }
/**
 * This stream class is unbuffered. Therefore this method will always