1 /*
2  * Copyright (c) 2022 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef SELINUX_PARAM_H
17 #define SELINUX_PARAM_H
18 
19 #pragma once
20 
21 #include <stdbool.h>
22 #include <stdint.h>
23 #include <stdlib.h>
24 #include <string.h>
25 
26 #ifdef __cplusplus
27 #if __cplusplus
28 extern "C" {
29 #endif
30 #endif // __cplusplus
31 
32 typedef struct SharedMem {
33     uint8_t paramNameSize;
34     uint8_t paramLabelSize;
35     char data[0];
36 } SharedMem;
37 
38 void *InitSharedMem(const char *fileName, uint32_t spaceSize, bool readOnly);
39 void WriteSharedMem(char *sharedMem, const char *data, uint32_t length);
40 char *ReadSharedMem(char *sharedMem, uint32_t length);
41 void UnmapSharedMem(char *sharedMem, uint32_t dataSize);
42 
43 #ifdef __cplusplus
44 #if __cplusplus
45 }
46 #endif
47 #endif // __cplusplus
48 #endif // SELINUX_PARAM_H
49