md5.update(opad);
        return md5.digest(digest);
    }

    protected int engineDigest(byte[] buf, int offset, int len) {
        byte[] digest = md5.digest();
        md5.update(opad);
        md5.update(digest);
        try {
            return md5.digest(buf, offset, len);
        } catch (Exception ex) {
            throw new IllegalStateException();
        }
    }

        return this.md5.digest(digest);
    }


    @Override
    protected int engineDigest ( byte[] buf, int offset, int len ) {
        byte[] digest = this.md5.digest();
        this.md5.update(this.opad);
        this.md5.update(digest);
        try {
            return this.md5.digest(buf, offset, len);
        }
        catch ( Exception ex ) {
            throw new IllegalStateException();
        }
    }

    @Override
    protected int readSetupWireFormat ( byte[] buffer, int bufferIndex, int len ) {
        return 0;
    }


    @Override
    protected int readParametersWireFormat ( byte[] buffer, int bufferIndex, int len ) {
        return 0;
    }


    @Override
    protected int readDataWireFormat ( byte[] buffer, int bufferIndex, int len ) {
        return 0;
    }


    @Override

    }


    /**
     * Reads up to len bytes of data from this input stream into an array of bytes.
     *
     * @throws IOException
     *             if a network error occurs
     */

    @Override
    public int read ( byte[] b, int off, int len ) throws IOException {
        return readDirect(b, off, len);
    }


    /**

            file.log.println( "write: fid=" + file.fid + ",off=" + off + ",len=" + len );

        int w;
        do {
            w = len > writeSize ? writeSize : len;
            if( useNTSmbs ) {
                reqx.setParam( file.fid, fp, len - w, b, off, w );
if ((flags & 1) != 0) {
    reqx.setParam( file.fid, fp, len, b, off, w );
    reqx.writeMode = 0x8;
} else {
    reqx.writeMode = 0;
}

func (x *xlMetaV2) AppendTo(dst []byte) ([]byte, error) {
	// Header...
	sz := len(xlHeader) + len(xlVersionCurrent) + msgp.ArrayHeaderSize + len(dst) + 3*msgp.Uint32Size
	// Existing + Inline data
	sz += len(dst) + len(x.data)
	// Versions...
	for _, ver := range x.versions {
		sz += 32 + len(ver.meta)
	}
	if cap(dst) < sz {
		buf := make([]byte, len(dst), sz)
		copy(buf, dst)
		dst = buf
	}

	stdout := &bytes.Buffer{}
	stderr := &bytes.Buffer{}
	externalCommand.Stdout = stdout
	externalCommand.Stderr = stderr

	err := externalCommand.Run()

	if len(stdout.String()) != 0 {
		log.Debugf("Command output: \n%v", stdout.String())
	}

	if err != nil || len(stderr.Bytes()) != 0 {
		log.Debugf("Command error output: \n%v", stderr.String())
		return errors.New(stderr.String())
	}

	return nil

	errs := make([]error, len(fanOutEntries))
	objInfos := make([]ObjectInfo, len(fanOutEntries))

	var wg sync.WaitGroup
	for i, req := range fanOutEntries {
		wg.Add(1)
		go func(idx int, req minio.PutObjectFanOutEntry) {
			defer wg.Done()

			objInfos[idx] = ObjectInfo{Name: req.Key}

			hopts := hash.Options{
				Size:       int64(len(fanOutBuf)),
				MD5Hex:     opts.MD5Hex,

			continue
		}
		r, err := parseGoroutineType2(arg)
		if err != nil {
			log.Fatal(err)
		}

		profFName := path.Base(arg)
		fmt.Println(strings.Repeat("=", len(profFName)))
		fmt.Println(profFName)
		fmt.Println(strings.Repeat("=", len(profFName)))
		fmt.Println("")

		for t, stacks := range r {
			if less != 0 && t >= less {
				continue
			}

    bytesIn.writeByte(0x0a) // Literal name (len = 10)
    bytesIn.writeUtf8("custom-foo")
    bytesIn.writeByte(0x0d) // Literal value (len = 13)
    bytesIn.writeUtf8("custom-header")
    bytesIn.writeByte(0x40) // Literal indexed
    bytesIn.writeByte(0x0a) // Literal name (len = 10)
    bytesIn.writeUtf8("custom-bar")
    bytesIn.writeByte(0x0d) // Literal value (len = 13)
    bytesIn.writeUtf8("custom-header")