1 /* 2 * Copyright (C) 2018 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 #include <build/version.h> 18 19 #ifdef __ANDROID__ 20 #include <sys/system_properties.h> 21 #endif 22 23 namespace android { 24 namespace build { 25 26 #ifdef __ANDROID__ 27 28 std::string GetBuildNumber() { 29 const prop_info* pi = __system_property_find("ro.build.version.incremental"); 30 if (pi == nullptr) return ""; 31 32 std::string property_value; 33 __system_property_read_callback(pi, 34 [](void* cookie, const char*, const char* value, unsigned) { 35 auto property_value = reinterpret_cast<std::string*>(cookie); 36 *property_value = value; 37 }, 38 &property_value); 39 40 return property_value; 41 } 42 43 #else 44 45 extern "C" { 46 char soong_build_number[128] = "SOONG BUILD NUMBER PLACEHOLDER"; 47 } 48 49 std::string GetBuildNumber() { 50 return soong_build_number; 51 } 52 53 #endif 54 } // namespace build 55 } // namespace android 56
