AU: support for generating new style full updates.

delta_diff_generator.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_PLATFORM_UPDATE_ENGINE_DELTA_DIFF_GENERATOR_H__
 #define CHROMEOS_PLATFORM_UPDATE_ENGINE_DELTA_DIFF_GENERATOR_H__
 
 #include <string>
 #include <vector>
 #include "base/basictypes.h"
@@ skipping 175 matching lines @@
   // success.
   static bool AssignTempBlocks(
       Graph* graph,
       const std::string& new_root,
       int data_fd,
       off_t* data_file_size,
       std::vector<Vertex::Index>* op_indexes,
       std::vector<std::vector<Vertex::Index>::size_type>* reverse_op_indexes,
       std::vector<CutEdgeVertexes>& cuts);
 
+  // Given a new rootfs and kernel (|new_image|, |new_kernel_part|),
+  // Reads them sequentially, creating a full update of chunk_size chunks.
+  // Populates |graph|, |kernel_ops|, and |final_order|, with data
+  // about the update operations, and writes relevant data to |fd|,
+  // updating |data_file_size| as it does.
+  static bool ReadFullUpdateFromDisk(
+      Graph* graph,
+      const std::string& new_kernel_part,
+      const std::string& new_image,
+      int fd,
+      off_t* data_file_size,
+      off_t chunk_size,
+      std::vector<DeltaArchiveManifest_InstallOperation>* kernel_ops,
+      std::vector<Vertex::Index>* final_order);
+
  private:
   // This should never be constructed
   DISALLOW_IMPLICIT_CONSTRUCTORS(DeltaDiffGenerator);
 };
 
 extern const char* const kBsdiffPath;
 extern const char* const kBspatchPath;
 extern const char* const kDeltaMagic;
 
 };  // namespace chromeos_update_engine
 
 #endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_DELTA_DIFF_GENERATOR_H__