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