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 "common/libs/transport/channel.h"
18
19 namespace cuttlefish {
20 namespace transport {
21
operator ()(RawMessage * ptr)22 void MessageDestroyer::operator()(RawMessage* ptr) {
23 std::memset(ptr, 0, sizeof(RawMessage) + ptr->payload_size);
24 std::free(ptr);
25 }
26
27 /**
28 * Allocates memory for a RawMessage carrying a message of size
29 * `payload_size`.
30 */
CreateMessage(uint32_t command,bool is_response,size_t payload_size)31 Result<ManagedMessage> CreateMessage(uint32_t command, bool is_response, size_t payload_size) {
32 const auto bytes_to_allocate = sizeof(RawMessage) + payload_size;
33 auto memory = std::malloc(bytes_to_allocate);
34 CF_EXPECT(memory != nullptr,
35 "Cannot allocate " << bytes_to_allocate << " bytes for secure_env RPC message");
36 auto message = reinterpret_cast<RawMessage*>(memory);
37 message->command = command;
38 message->is_response = is_response;
39 message->payload_size = payload_size;
40 return ManagedMessage(message);
41 }
42
CreateMessage(uint32_t command,size_t payload_size)43 Result<ManagedMessage> CreateMessage(uint32_t command, size_t payload_size) {
44 return CreateMessage(command, false, payload_size);
45 }
46
47 } // namespace transport
48 } // namespace cuttlefish