| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "nativeloader/native_loader.h" |
| #define LOG_TAG "nativeloader" |
| |
| #include <dlfcn.h> |
| #include <errno.h> |
| #include <string.h> |
| |
| #include <log/log.h> |
| |
| namespace android { |
| |
| namespace { |
| |
| void* GetLibHandle() { |
| static void* handle = dlopen("libnativeloader.so", RTLD_NOW); |
| LOG_FATAL_IF(handle == nullptr, "Failed to load libnativeloader.so: %s", dlerror()); |
| return handle; |
| } |
| |
| template <typename FuncPtr> |
| FuncPtr GetFuncPtr(const char* function_name) { |
| auto f = reinterpret_cast<FuncPtr>(dlsym(GetLibHandle(), function_name)); |
| LOG_FATAL_IF(f == nullptr, "Failed to get address of %s: %s", function_name, dlerror()); |
| return f; |
| } |
| |
| #define GET_FUNC_PTR(name) GetFuncPtr<decltype(&name)>(#name) |
| |
| } // namespace |
| |
| void InitializeNativeLoader() { |
| static auto f = GET_FUNC_PTR(InitializeNativeLoader); |
| return f(); |
| } |
| |
| jstring CreateClassLoaderNamespace(JNIEnv* env, int32_t target_sdk_version, jobject class_loader, |
| bool is_shared, bool is_for_vendor, jstring library_path, |
| jstring permitted_path) { |
| static auto f = GET_FUNC_PTR(CreateClassLoaderNamespace); |
| return f(env, target_sdk_version, class_loader, is_shared, is_for_vendor, library_path, |
| permitted_path); |
| } |
| |
| void* OpenNativeLibrary(JNIEnv* env, int32_t target_sdk_version, const char* path, |
| jobject class_loader, const char* caller_location, jstring library_path, |
| bool* needs_native_bridge, char** error_msg) { |
| static auto f = GET_FUNC_PTR(OpenNativeLibrary); |
| return f(env, target_sdk_version, path, class_loader, caller_location, library_path, |
| needs_native_bridge, error_msg); |
| } |
| |
| bool CloseNativeLibrary(void* handle, const bool needs_native_bridge, char** error_msg) { |
| static auto f = GET_FUNC_PTR(CloseNativeLibrary); |
| return f(handle, needs_native_bridge, error_msg); |
| } |
| |
| void NativeLoaderFreeErrorMessage(char* msg) { |
| static auto f = GET_FUNC_PTR(NativeLoaderFreeErrorMessage); |
| return f(msg); |
| } |
| |
| struct android_namespace_t* FindNamespaceByClassLoader(JNIEnv* env, jobject class_loader) { |
| static auto f = GET_FUNC_PTR(FindNamespaceByClassLoader); |
| return f(env, class_loader); |
| } |
| |
| struct NativeLoaderNamespace* FindNativeLoaderNamespaceByClassLoader(JNIEnv* env, |
| jobject class_loader) { |
| static auto f = GET_FUNC_PTR(FindNativeLoaderNamespaceByClassLoader); |
| return f(env, class_loader); |
| } |
| |
| void* OpenNativeLibraryInNamespace(struct NativeLoaderNamespace* ns, const char* path, |
| bool* needs_native_bridge, char** error_msg) { |
| static auto f = GET_FUNC_PTR(OpenNativeLibraryInNamespace); |
| return f(ns, path, needs_native_bridge, error_msg); |
| } |
| |
| void ResetNativeLoader() { |
| static auto f = GET_FUNC_PTR(ResetNativeLoader); |
| return f(); |
| } |
| |
| #undef GET_FUNC_PTR |
| |
| } // namespace android |