1 /*
2 * Copyright 2023 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 "host/commands/secure_env/storage/storage.h"
18
19 #include "keymaster/android_keymaster_utils.h"
20
21 namespace cuttlefish {
22 namespace secure_env {
23
operator ()(StorageData * ptr)24 void StorageDataDestroyer::operator()(StorageData* ptr) {
25 {
26 keymaster::Eraser(ptr, sizeof(StorageData) + ptr->size);
27 }
28 std::free(ptr);
29 }
30
CreateStorageData(size_t size)31 Result<ManagedStorageData> CreateStorageData(size_t size) {
32 const auto bytes_to_allocate = sizeof(StorageData) + size;
33 auto memory = std::malloc(bytes_to_allocate);
34 CF_EXPECT(memory != nullptr,
35 "Cannot allocate " << bytes_to_allocate << " bytes for storage data");
36 auto data = reinterpret_cast<StorageData*>(memory);
37 data->size = size;
38 return ManagedStorageData(data);
39 }
40
CreateStorageData(const void * data,size_t size)41 Result<ManagedStorageData> CreateStorageData(const void* data, size_t size) {
42 auto managed_data = CF_EXPECT(CreateStorageData(size));
43 std::memcpy(managed_data->payload, data, size);
44 return managed_data;
45 }
46
47 } // namespace secure_env
48 } // namespace cuttlefish
49