1 /*
2  * Copyright 2016 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 #include <errno.h>
18 
19 #include <lib/storage/storage.h>
20 
21 #include "secure_storage_interface.h"
22 
23 namespace avb {
24 
25 // Implementation of SecureStorageInterface that uses Trusty's
26 // secure storage library
27 class SecureStorage : public SecureStorageInterface {
28 public:
29     ~SecureStorage() override;
30     int open(const char* name) override;
31     int delete_file(const char* name) override;
32     int read(uint64_t off, void* buf, size_t size) const override;
33     int get_file_size(uint64_t* size) const override;
34     int write(uint64_t off, const void* buf, size_t size) const override;
35 
36 private:
37     void close();
38 
39     storage_session_t session_handle_ = 0;
40     file_handle_t file_handle_ = 0;
41     int error_ = -EINVAL;
42 };
43 
44 }  // namespace avb
45