1 files changed, 83 insertions, 0 deletions
diff --git a/src/librbd/io/Utils.h b/src/librbd/io/Utils.h
new file mode 100644
index 000000000..efb79b6a6
--- /dev/null
+++ b/src/librbd/io/Utils.h
@@ -0,0 +1,83 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_IO_UTILS_H
+#define CEPH_LIBRBD_IO_UTILS_H
+
+#include "include/int_types.h"
+#include "include/buffer_fwd.h"
+#include "include/rados/rados_types.hpp"
+#include "common/zipkin_trace.h"
+#include "librbd/Types.h"
+#include "librbd/io/Types.h"
+#include <map>
+
+class ObjectExtent;
+
+namespace neorados { struct Op; }
+
+namespace librbd {
+
+struct ImageCtx;
+
+namespace io {
+namespace util {
+
+void apply_op_flags(uint32_t op_flags, uint32_t flags, neorados::Op* op);
+
+bool assemble_write_same_extent(const LightweightObjectExtent &object_extent,
+                                const ceph::bufferlist& data,
+                                ceph::bufferlist *ws_data,
+                                bool force_write);
+
+template <typename ImageCtxT = librbd::ImageCtx>
+void read_parent(ImageCtxT *image_ctx, uint64_t object_no,
+                 ReadExtents* read_extents, librados::snap_t snap_id,
+                 const ZTracer::Trace &trace, Context* on_finish);
+
+template <typename ImageCtxT = librbd::ImageCtx>
+int clip_request(ImageCtxT* image_ctx, Extents* image_extents, ImageArea area);
+
+inline uint64_t get_extents_length(const Extents &extents) {
+  uint64_t total_bytes = 0;
+  for (auto [_, extent_length] : extents) {
+    total_bytes += extent_length;
+  }
+  return total_bytes;
+}
+
+void unsparsify(CephContext* cct, ceph::bufferlist* bl,
+                const Extents& extent_map, uint64_t bl_off,
+                uint64_t out_bl_len);
+
+template <typename ImageCtxT = librbd::ImageCtx>
+bool trigger_copyup(ImageCtxT *image_ctx, uint64_t object_no,
+                    IOContext io_context, Context* on_finish);
+
+template <typename ImageCtxT = librbd::ImageCtx>
+void area_to_object_extents(ImageCtxT* image_ctx, uint64_t offset,
+                            uint64_t length, ImageArea area,
+                            uint64_t buffer_offset,
+                            striper::LightweightObjectExtents* object_extents);
+
+template <typename ImageCtxT = librbd::ImageCtx>
+std::pair<Extents, ImageArea> object_to_area_extents(
+    ImageCtxT* image_ctx, uint64_t object_no, const Extents& object_extents);
+
+template <typename ImageCtxT = librbd::ImageCtx>
+uint64_t area_to_raw_offset(const ImageCtxT& image_ctx, uint64_t offset,
+                            ImageArea area);
+
+template <typename ImageCtxT = librbd::ImageCtx>
+std::pair<uint64_t, ImageArea> raw_to_area_offset(const ImageCtxT& image_ctx,
+                                                  uint64_t offset);
+
+inline ObjectDispatchLayer get_previous_layer(ObjectDispatchLayer layer) {
+  return (ObjectDispatchLayer)(((int)layer) - 1);
+}
+
+} // namespace util
+} // namespace io
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_IO_UTILS_H