|  | // Copyright (c) 2013 The Chromium OS 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/hwid_override.h" | 
|  |  | 
|  | #include <map> | 
|  | #include <string> | 
|  |  | 
|  | #include <base/files/file_path.h> | 
|  | #include <base/files/file_util.h> | 
|  | #include <chromeos/key_value_store.h> | 
|  |  | 
|  | using std::map; | 
|  | using std::string; | 
|  |  | 
|  | namespace chromeos_update_engine { | 
|  |  | 
|  | const char HwidOverride::kHwidOverrideKey[] = "HWID_OVERRIDE"; | 
|  |  | 
|  | HwidOverride::HwidOverride() {} | 
|  |  | 
|  | HwidOverride::~HwidOverride() {} | 
|  |  | 
|  | string HwidOverride::Read(const base::FilePath& root) { | 
|  | chromeos::KeyValueStore lsb_release; | 
|  | lsb_release.Load(base::FilePath(root.value() + "/etc/lsb-release")); | 
|  | string result; | 
|  | if (lsb_release.GetString(kHwidOverrideKey, &result)) | 
|  | return result; | 
|  | return ""; | 
|  | } | 
|  |  | 
|  | }  // namespace chromeos_update_engine |