Merge "Fix test harness mode" into sc-dev am: c11f9eca

        try {

            FileChannel channel = getBlockOutputChannel();

            // Format the data selectively.

            //

            // 1. write header, set length = 0

            int header_size = DIGEST_SIZE_BYTES + HEADER_SIZE;

            ByteBuffer buf = ByteBuffer.allocate(header_size);

            buf.put(new byte[DIGEST_SIZE_BYTES]);

            buf.putInt(PARTITION_TYPE_MARKER);

            buf.putInt(0);

            buf.flip();

            channel.write(buf);

            // corrupt the payload explicitly

            channel.force(true);

            // 2. corrupt the legacy FRP data explicitly

            int payload_size = (int) getBlockDeviceSize() - header_size;

            buf = ByteBuffer.allocate(payload_size);

            buf = ByteBuffer.allocate(payload_size

                          - TEST_MODE_RESERVED_SIZE - FRP_CREDENTIAL_RESERVED_SIZE - 1);

            channel.write(buf);

            channel.force(true);

            // 3. skip the test mode data and leave it unformat

            //    This is for a feature that enables testing.

            channel.position(channel.position() + TEST_MODE_RESERVED_SIZE);

            // 4. wipe the FRP_CREDENTIAL explicitly

            buf = ByteBuffer.allocate(FRP_CREDENTIAL_RESERVED_SIZE);

            channel.write(buf);

            channel.force(true);

            // 5. set unlock = 0 because it's a formatPartitionLocked

            buf = ByteBuffer.allocate(FRP_CREDENTIAL_RESERVED_SIZE);

            buf.put((byte)0);

            buf.flip();

            channel.write(buf);

            channel.force(true);

        } catch (IOException e) {