assertEquals(getField(cmd, "fid"), SMBUtil.readInt2(buffer, 0));
        assertEquals(getField(cmd, "typeOfLock"), buffer[2]);
        assertEquals(getField(cmd, "newOpLockLevel"), buffer[3]);
        assertEquals(getField(cmd, "timeout"), (long) SMBUtil.readInt4(buffer, 4));
        assertEquals(1, SMBUtil.readInt2(buffer, 8));
        assertEquals(1, SMBUtil.readInt2(buffer, 10));
    }

    /**

        int off = 0;
        assertEquals(65535, SMBUtil.readInt2(buf, off));
        off += 2;
        assertEquals(65535, SMBUtil.readInt2(buf, off));
        off += 2;
        assertEquals(0, SMBUtil.readInt2(buf, off));
        off += 2;
        assertEquals(0x12345678, SMBUtil.readInt4(buf, off));
        off += 4;
        assertEquals(blob.length, SMBUtil.readInt2(buf, off));
    }

        if (length > 24 + getStandardLeaseSize()) {
            int scopeOrdinal = SMBUtil.readInt4(buffer, dataOffset);
            this.cacheScope = DirectoryCacheScope.values()[scopeOrdinal];
            dataOffset += 4;

            this.maxCacheAge = SMBUtil.readInt8(buffer, dataOffset);
            dataOffset += 8;

            int flags = SMBUtil.readInt4(buffer, dataOffset);

        final int inputOffset = SMBUtil.readInt4(buffer, bufferIndex) + getHeaderStart();
        bufferIndex += 4;

        final int inputCount = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        final int outputOffset = SMBUtil.readInt4(buffer, bufferIndex) + getHeaderStart();
        bufferIndex += 4;

        final int outputCount = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

            throw new SMBProtocolDecodingException("Invalid compression context length: " + len);
        }

        int start = bufferIndex;

        // Read compression count
        int compressionCount = SMBUtil.readInt2(buffer, bufferIndex);
        bufferIndex += 2;

        // Validate compression count
        if (compressionCount < 0 || compressionCount > 16) {

        // Verify structure size (should be 24)
        assertEquals(24, SMBUtil.readInt2(buffer, offset));

        // Verify Reserved1 (2 bytes at offset+2, should be 0)
        assertEquals(0, SMBUtil.readInt2(buffer, offset + 2));

        // Verify Reserved2 (4 bytes at offset+4, should be 0)
        assertEquals(0, SMBUtil.readInt4(buffer, offset + 4));

        // Verify structure size (should be 24)
        assertEquals(24, SMBUtil.readInt2(buffer, offset));

        // Verify close flags (2 bytes at offset+2, should be 0 by default)
        assertEquals(0, SMBUtil.readInt2(buffer, offset + 2));

        // Verify Reserved (4 bytes at offset+4, should be 0)
        assertEquals(0, SMBUtil.readInt4(buffer, offset + 4));

        assertEquals(22, bytesEncoded);

        // Verify encoded data
        assertEquals(expectedAllocationSize, SMBUtil.readInt8(destinationBuffer, dstIndex));
        assertEquals(expectedEndOfFile, SMBUtil.readInt8(destinationBuffer, dstIndex + 8));
        assertEquals(expectedNumberOfLinks, SMBUtil.readInt4(destinationBuffer, dstIndex + 16));
        assertEquals(1, destinationBuffer[dstIndex + 20]); // deletePending

	}

	want = want[:0]
	entries, err = r.readN(0, false, true, false, "")
	if err != nil {
		t.Fatal(err, entries.len())
	}
	if entries.len() != len(want) {
		t.Fatal("unexpected length:", entries.len(), "want:", len(want))
	}

	// Reload.
	r = loadMetacacheSample(t)
	defer r.Close()
	entries, err = r.readN(0, false, true, false, "")
	if err != nil {
		t.Fatal(err, entries.len())
	}

	}
	return nil
}

func (b *streamingBitrotReader) ReadAt(buf []byte, offset int64) (int, error) {
	var err error
	if offset%b.shardSize != 0 {
		// Offset should always be aligned to b.shardSize
		// Can never happen unless there are programmer bugs
		return 0, errUnexpected
	}
	if b.rc == nil {
		// For the first ReadAt() call we need to open the stream for reading.
		b.currOffset = offset