1 files changed, 79 insertions, 0 deletions
diff --git a/src/librbd/image/AttachParentRequest.h b/src/librbd/image/AttachParentRequest.h
new file mode 100644
index 00000000..482e0327
--- /dev/null
+++ b/src/librbd/image/AttachParentRequest.h
@@ -0,0 +1,79 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_IMAGE_ATTACH_PARENT_REQUEST_H
+#define CEPH_LIBRBD_IMAGE_ATTACH_PARENT_REQUEST_H
+
+#include "include/int_types.h"
+#include "include/buffer.h"
+#include "include/rados/librados.hpp"
+#include "librbd/Types.h"
+
+class Context;
+
+namespace librbd {
+
+class ImageCtx;
+
+namespace image {
+
+template <typename ImageCtxT = ImageCtx>
+class AttachParentRequest {
+public:
+  static AttachParentRequest* create(ImageCtxT& image_ctx,
+                                     const cls::rbd::ParentImageSpec& pspec,
+                                     uint64_t parent_overlap,
+                                     bool reattach,
+                                     Context* on_finish) {
+    return new AttachParentRequest(image_ctx, pspec, parent_overlap, reattach,
+                                   on_finish);
+  }
+
+  AttachParentRequest(ImageCtxT& image_ctx,
+                      const cls::rbd::ParentImageSpec& pspec,
+                      uint64_t parent_overlap, bool reattach,
+                      Context* on_finish)
+    : m_image_ctx(image_ctx), m_parent_image_spec(pspec),
+      m_parent_overlap(parent_overlap), m_reattach(reattach),
+      m_on_finish(on_finish) {
+  }
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |    * * * * * *
+   *    |    *         * -EOPNOTSUPP
+   *    v    v         *
+   * ATTACH_PARENT * * *
+   *    |
+   *    v
+   * <finish>
+   *
+   * @endverbatim
+   */
+
+  ImageCtxT& m_image_ctx;
+  cls::rbd::ParentImageSpec m_parent_image_spec;
+  uint64_t m_parent_overlap;
+  bool m_reattach;
+  Context* m_on_finish;
+
+  bool m_legacy_parent = false;
+
+  void attach_parent();
+  void handle_attach_parent(int r);
+
+  void finish(int r);
+
+};
+
+} // namespace image
+} // namespace librbd
+
+extern template class librbd::image::AttachParentRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_IMAGE_ATTACH_PARENT_REQUEST_H