1 files changed, 48 insertions, 0 deletions
diff --git a/src/librbd/migration/SnapshotInterface.h b/src/librbd/migration/SnapshotInterface.h
new file mode 100644
index 000000000..9990802c5
--- /dev/null
+++ b/src/librbd/migration/SnapshotInterface.h
@@ -0,0 +1,48 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_MIGRATION_SNAPSHOT_INTERFACE_H
+#define CEPH_LIBRBD_MIGRATION_SNAPSHOT_INTERFACE_H
+
+#include "include/buffer_fwd.h"
+#include "include/int_types.h"
+#include "common/zipkin_trace.h"
+#include "librbd/Types.h"
+#include "librbd/io/Types.h"
+#include <string>
+
+struct Context;
+
+namespace librbd {
+
+namespace io {
+struct AioCompletion;
+struct ReadResult;
+} // namespace io
+
+namespace migration {
+
+struct SnapshotInterface {
+  virtual ~SnapshotInterface() {
+  }
+
+  virtual void open(SnapshotInterface* previous_snapshot,
+                    Context* on_finish) = 0;
+  virtual void close(Context* on_finish) = 0;
+
+  virtual const SnapInfo& get_snap_info() const = 0;
+
+  virtual void read(io::AioCompletion* aio_comp, io::Extents&& image_extents,
+                    io::ReadResult&& read_result, int op_flags, int read_flags,
+                    const ZTracer::Trace &parent_trace) = 0;
+
+  virtual void list_snap(io::Extents&& image_extents, int list_snaps_flags,
+                         io::SparseExtents* sparse_extents,
+                         const ZTracer::Trace &parent_trace,
+                         Context* on_finish) = 0;
+};
+
+} // namespace migration
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_MIGRATION_SNAPSHOT_INTERFACE_H