1 files changed, 65 insertions, 0 deletions
diff --git a/src/librbd/crypto/luks/FlattenRequest.h b/src/librbd/crypto/luks/FlattenRequest.h
new file mode 100644
index 000000000..a1432f505
--- /dev/null
+++ b/src/librbd/crypto/luks/FlattenRequest.h
@@ -0,0 +1,65 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_CRYPTO_LUKS_FLATTEN_REQUEST_H
+#define CEPH_LIBRBD_CRYPTO_LUKS_FLATTEN_REQUEST_H
+
+#include "librbd/ImageCtx.h"
+
+namespace librbd {
+
+namespace crypto {
+namespace luks {
+
+template <typename I>
+class FlattenRequest {
+public:
+    using EncryptionFormat = decltype(I::encryption_format);
+
+    static FlattenRequest* create(I* image_ctx, Context* on_finish) {
+      return new FlattenRequest(image_ctx, on_finish);
+    }
+
+    FlattenRequest(I* image_ctx, Context* on_finish);
+    void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |
+   *    v
+   * READ_HEADER
+   *    |
+   *    v
+   * WRITE_HEADER (replacing magic back from RBDL to LUKS if needed)
+   *    |
+   *    v
+   * FLUSH
+   *    |
+   *    v
+   * <finish>
+   *
+   * @endverbatim
+   */
+    I* m_image_ctx;
+    Context* m_on_finish;
+    ceph::bufferlist m_bl;
+
+    void read_header();
+    void handle_read_header(int r);
+    void write_header();
+    void handle_write_header(int r);
+    void flush();
+    void handle_flush(int r);
+    void finish(int r);
+};
+
+} // namespace luks
+} // namespace crypto
+} // namespace librbd
+
+extern template class librbd::crypto::luks::FlattenRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_CRYPTO_LUKS_FLATTEN_REQUEST_H