1 /****************************************************************************** 2 * 3 * Copyright (C) 2016 Google, Inc. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 #pragma once 20 21 #include <cstdint> 22 #if defined(OS_GENERIC) 23 #define PROPERTY_VALUE_MAX 92 24 #else 25 #include <cutils/properties.h> 26 #endif // defined(OS_GENERIC) 27 28 // Get value associated with key |key| into |value|. 29 // Returns the length of the value which will never be greater than 30 // PROPERTY_VALUE_MAX - 1 and will always be zero terminated. 31 // (the length does not include the terminating zero). 32 // If the property read fails or returns an empty value, the |default_value| 33 // is used (if nonnull). If the |default_value| is null, zero is returned. 34 int osi_property_get(const char* key, char* value, const char* default_value); 35 36 // Write value of property associated with key |key| to |value|. 37 // Returns 0 on success, < 0 on failure 38 int osi_property_set(const char* key, const char* value); 39 40 // Adapter function for property_get_int32 in 41 // libcutils/include/cutils/properties.h 42 // 43 // returns the value of |key| truncated and coerced into an 44 // int32_t. If the property is not set, then the |default_value| is used. 45 int32_t osi_property_get_int32(const char* key, int32_t default_value); 46
