1 //
2 // Copyright (C) 2015 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 //      http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16 
17 #ifndef TPM_MANAGER_SERVER_LOCAL_DATA_STORE_H_
18 #define TPM_MANAGER_SERVER_LOCAL_DATA_STORE_H_
19 
20 #include "tpm_manager/common/tpm_manager.pb.h"
21 
22 namespace tpm_manager {
23 
24 // LocalDataStore is an interface class that provides access to read and write
25 // local system data.
26 class LocalDataStore {
27  public:
28   LocalDataStore() = default;
29   virtual ~LocalDataStore() = default;
30 
31   // Reads local |data| from persistent storage. If no local data exists, the
32   // output is an empty protobuf and the method succeeds. Returns true on
33   // success.
34   virtual bool Read(LocalData* data) = 0;
35 
36   // Writes local |data| to persistent storage. Returns true on success.
37   virtual bool Write(const LocalData& data) = 0;
38 };
39 
40 }  // namespace tpm_manager
41 
42 #endif  // TPM_MANAGER_SERVER_LOCAL_DATA_STORE_H_
43