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 #ifndef AVB_IPC_H_
18 #define AVB_IPC_H_
19 
20 #include "avb_messages.h"
21 
22 namespace avb {
23 
24 enum avb_command {
25     AVB_REQ_SHIFT = 1,
26     AVB_RESP_BIT = 1,
27 
28     READ_ROLLBACK_INDEX = (0 << AVB_REQ_SHIFT),
29     WRITE_ROLLBACK_INDEX = (1 << AVB_REQ_SHIFT),
30     AVB_GET_VERSION = (2 << AVB_REQ_SHIFT),
31     READ_PERMANENT_ATTRIBUTES = (3 << AVB_REQ_SHIFT),
32     WRITE_PERMANENT_ATTRIBUTES = (4 << AVB_REQ_SHIFT),
33     READ_LOCK_STATE = (5 << AVB_REQ_SHIFT),
34     WRITE_LOCK_STATE = (6 << AVB_REQ_SHIFT),
35     LOCK_BOOT_STATE = (7 << AVB_REQ_SHIFT),
36 };
37 
38 // struct avb_message - Generic message format for communicating with AVB server
39 // @cmd:              one of enum avb_command
40 // @result:           one of enum AvbError
41 // @payload:          start of the serialized command specific message
42 struct avb_message {
43     uint32_t cmd;
44     AvbError result;
45     uint8_t payload[0];
46 };
47 
48 }  // namespace avb
49 
50 #endif  // AVB_IPC_H_
51