1 files changed, 45 insertions, 0 deletions
diff --git a/src/librbd/plugin/Types.h b/src/librbd/plugin/Types.h
new file mode 100644
index 000000000..b66d754ac
--- /dev/null
+++ b/src/librbd/plugin/Types.h
@@ -0,0 +1,45 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_PLUGIN_TYPES_H
+#define CEPH_LIBRBD_PLUGIN_TYPES_H
+
+#include "include/common_fwd.h"
+#include "include/Context.h"
+#include "common/PluginRegistry.h"
+#include "librbd/cache/ImageWriteback.h"
+
+namespace librbd {
+namespace plugin {
+
+template <typename> struct Api;
+
+struct HookPoints {
+  virtual ~HookPoints() {
+  }
+  virtual void acquired_exclusive_lock(Context* on_finish) = 0;
+  virtual void prerelease_exclusive_lock(Context* on_finish) = 0;
+  virtual void discard(Context* on_finish) {
+    on_finish->complete(0);
+  }
+};
+
+typedef std::list<std::unique_ptr<HookPoints>> PluginHookPoints;
+
+template <typename ImageCtxT>
+struct Interface : public ceph::Plugin {
+  Interface(CephContext* cct) : Plugin(cct) {
+  }
+
+  virtual ~Interface() {
+  }
+
+  virtual void init(ImageCtxT* image_ctx, Api<ImageCtxT>& api,
+		    librbd::cache::ImageWritebackInterface& image_writeback,
+                    PluginHookPoints& hook_points_list, Context* on_finish) = 0;
+};
+
+} // namespace plugin
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_PLUGIN_TYPES_H