1 /****************************************************************************** 2 * 3 * Copyright 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 #include <vector> 23 24 #ifndef PROPERTY_VALUE_MAX 25 #define PROPERTY_VALUE_MAX 92 26 #endif // PROPERTY_VALUE_MAX 27 28 #define BUILD_SANITY_PROPERTY_VALUE_MAX 92 29 30 // Get value associated with key |key| into |value|. 31 // Returns the length of the value which will never be greater than 32 // PROPERTY_VALUE_MAX - 1 and will always be zero terminated. 33 // (the length does not include the terminating zero). 34 // If the property read fails or returns an empty value, the |default_value| 35 // is used (if nonnull). If the |default_value| is null, zero is returned. 36 int osi_property_get(const char* key, char* value, const char* default_value); 37 38 // Write value of property associated with key |key| to |value|. 39 // Returns 0 on success, < 0 on failure 40 int osi_property_set(const char* key, const char* value); 41 42 // Adapter function for property_get_int32 in 43 // libcutils/include/cutils/properties.h 44 // 45 // returns the value of |key| truncated and coerced into an 46 // int32_t. If the property is not set, then the |default_value| is used. 47 int32_t osi_property_get_int32(const char* key, int32_t default_value); 48 49 // Adapter function for property_get_bool in 50 // libcutils/include/cutils/properties.h 51 // 52 // returns the value of |key| coerced into a bool. If the property is not set, 53 // then the |default_value| is used. 54 bool osi_property_get_bool(const char* key, bool default_value); 55 56 // Helper function that returns the value of |key| coerced into a vector of 57 // uint32_t. If the property is not set, then the |default_value| is used. 58 std::vector<uint32_t> osi_property_get_uintlist( 59 const char* key, std::vector<uint32_t> default_value);