AU: Changes for deltas on traditional bios machines.

omaha_response_handler_action.cc

 // Copyright (c) 2009 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.
 
 #include "update_engine/omaha_response_handler_action.h"
 #include <string>
 #include "update_engine/utils.h"
 
 using std::string;
 
@@ skipping 17 matching lines @@
   }
   install_plan_.download_url = response.codebase;
   install_plan_.size = response.size;
   install_plan_.download_hash = response.hash;
   TEST_AND_RETURN(GetInstallDev(
       (!boot_device_.empty() ? boot_device_ : utils::BootDevice()),
       &install_plan_.install_path));
   install_plan_.kernel_install_path =
       utils::BootKernelDevice(install_plan_.install_path);
 
-  install_plan_.is_full_update = true;  // TODO(adlr): know if update is a delta
+  install_plan_.is_full_update = !response.is_delta;
 
   TEST_AND_RETURN(HasOutputPipe());
   if (HasOutputPipe())
     SetOutputObject(install_plan_);
   LOG(INFO) << "Using this install plan:";
   install_plan_.Dump();
 
   completer.set_success(true);
 }
 
 bool OmahaResponseHandlerAction::GetInstallDev(const std::string& boot_dev,
                                                std::string* install_dev) {
   TEST_AND_RETURN_FALSE(utils::StringHasPrefix(boot_dev, "/dev/"));
   string ret(boot_dev);
   string::reverse_iterator it = ret.rbegin();  // last character in string
   // Right now, we just switch '3' and '5' partition numbers.
   TEST_AND_RETURN_FALSE((*it == '3') || (*it == '5'));
   *it = (*it == '3') ? '5' : '3';
   *install_dev = ret;
   return true;
 }
 
 }  // namespace chromeos_update_engine