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 PARAMETER__H
17 #define PARAMETER__H
18 
19 #ifdef __cplusplus
20 #if __cplusplus
21 extern "C" {
22 #endif
23 #endif /* __cplusplus */
24 
25 int GetParameter(const char *key, const char *def, char *value, unsigned int len);
26 
27 int SetParameter(const char *key, const char *value);
28 
29 typedef void (*ParameterChgPtr)(const char *key, const char *value, void *context);
30 int WatchParameter(const char *keyprefix, ParameterChgPtr callback, void *context);
31 
32 int GetDevUdid(char *udid, int size);
33 #ifdef __cplusplus
34 #if __cplusplus
35 }
36 #endif
37 #endif /* __cplusplus */
38 #endif
39