1443ec4972
This way native bridge namespace could be acquired in advance and when library must be loaded JNIEnv is not needed. Bug: http://b/79940628 Test: cts-tradefed run commandAndExit cts -m CtsGpuToolsHostTestCases Change-Id: If8bff272fc5245eb4e418807c3bdd29e82833ab8
760 lines
28 KiB
C++
760 lines
28 KiB
C++
/*
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* Copyright (C) 2015 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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#include <nativehelper/ScopedUtfChars.h>
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#include <dlfcn.h>
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#ifdef __ANDROID__
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#define LOG_TAG "libnativeloader"
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#include "nativeloader/dlext_namespaces.h"
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#include "cutils/properties.h"
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#include "log/log.h"
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#endif
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#include <dirent.h>
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#include <sys/types.h>
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#include "nativebridge/native_bridge.h"
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#include <algorithm>
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#include <list>
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#include <memory>
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#include <mutex>
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#include <string>
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#include <vector>
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#include <android-base/file.h>
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#include <android-base/macros.h>
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#include <android-base/strings.h>
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#ifdef __BIONIC__
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#include <android-base/properties.h>
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#endif
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#define CHECK(predicate) LOG_ALWAYS_FATAL_IF(!(predicate),\
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"%s:%d: %s CHECK '" #predicate "' failed.",\
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__FILE__, __LINE__, __FUNCTION__)
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using namespace std::string_literals;
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namespace android {
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#if defined(__ANDROID__)
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class NativeLoaderNamespace {
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public:
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NativeLoaderNamespace()
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: android_ns_(nullptr), native_bridge_ns_(nullptr) { }
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explicit NativeLoaderNamespace(android_namespace_t* ns)
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: android_ns_(ns), native_bridge_ns_(nullptr) { }
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explicit NativeLoaderNamespace(native_bridge_namespace_t* ns)
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: android_ns_(nullptr), native_bridge_ns_(ns) { }
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NativeLoaderNamespace(NativeLoaderNamespace&& that) = default;
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NativeLoaderNamespace(const NativeLoaderNamespace& that) = default;
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NativeLoaderNamespace& operator=(const NativeLoaderNamespace& that) = default;
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android_namespace_t* get_android_ns() const {
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CHECK(native_bridge_ns_ == nullptr);
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return android_ns_;
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}
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native_bridge_namespace_t* get_native_bridge_ns() const {
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CHECK(android_ns_ == nullptr);
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return native_bridge_ns_;
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}
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bool is_android_namespace() const {
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return native_bridge_ns_ == nullptr;
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}
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private:
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// Only one of them can be not null
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android_namespace_t* android_ns_;
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native_bridge_namespace_t* native_bridge_ns_;
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};
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static constexpr const char kPublicNativeLibrariesSystemConfigPathFromRoot[] =
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"/etc/public.libraries.txt";
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static constexpr const char kPublicNativeLibrariesExtensionConfigPrefix[] = "public.libraries-";
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static constexpr const size_t kPublicNativeLibrariesExtensionConfigPrefixLen =
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sizeof(kPublicNativeLibrariesExtensionConfigPrefix) - 1;
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static constexpr const char kPublicNativeLibrariesExtensionConfigSuffix[] = ".txt";
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static constexpr const size_t kPublicNativeLibrariesExtensionConfigSuffixLen =
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sizeof(kPublicNativeLibrariesExtensionConfigSuffix) - 1;
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static constexpr const char kPublicNativeLibrariesVendorConfig[] =
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"/vendor/etc/public.libraries.txt";
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static constexpr const char kLlndkNativeLibrariesSystemConfigPathFromRoot[] =
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"/etc/llndk.libraries.txt";
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static constexpr const char kVndkspNativeLibrariesSystemConfigPathFromRoot[] =
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"/etc/vndksp.libraries.txt";
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// The device may be configured to have the vendor libraries loaded to a separate namespace.
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// For historical reasons this namespace was named sphal but effectively it is intended
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// to use to load vendor libraries to separate namespace with controlled interface between
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// vendor and system namespaces.
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static constexpr const char* kVendorNamespaceName = "sphal";
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static constexpr const char* kVndkNamespaceName = "vndk";
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static constexpr const char* kClassloaderNamespaceName = "classloader-namespace";
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static constexpr const char* kVendorClassloaderNamespaceName = "vendor-classloader-namespace";
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// (http://b/27588281) This is a workaround for apps using custom classloaders and calling
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// System.load() with an absolute path which is outside of the classloader library search path.
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// This list includes all directories app is allowed to access this way.
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static constexpr const char* kWhitelistedDirectories = "/data:/mnt/expand";
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static bool is_debuggable() {
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char debuggable[PROP_VALUE_MAX];
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property_get("ro.debuggable", debuggable, "0");
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return std::string(debuggable) == "1";
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}
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static std::string vndk_version_str() {
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#ifdef __BIONIC__
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std::string version = android::base::GetProperty("ro.vndk.version", "");
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if (version != "" && version != "current") {
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return "." + version;
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}
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#endif
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return "";
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}
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static void insert_vndk_version_str(std::string* file_name) {
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CHECK(file_name != nullptr);
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size_t insert_pos = file_name->find_last_of(".");
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if (insert_pos == std::string::npos) {
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insert_pos = file_name->length();
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}
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file_name->insert(insert_pos, vndk_version_str());
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}
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static const std::function<bool(const std::string&, std::string*)> always_true =
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[](const std::string&, std::string*) { return true; };
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class LibraryNamespaces {
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public:
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LibraryNamespaces() : initialized_(false) { }
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NativeLoaderNamespace* Create(JNIEnv* env,
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uint32_t target_sdk_version,
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jobject class_loader,
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bool is_shared,
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bool is_for_vendor,
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jstring java_library_path,
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jstring java_permitted_path,
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std::string* error_msg) {
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std::string library_path; // empty string by default.
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if (java_library_path != nullptr) {
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ScopedUtfChars library_path_utf_chars(env, java_library_path);
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library_path = library_path_utf_chars.c_str();
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}
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// (http://b/27588281) This is a workaround for apps using custom
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// classloaders and calling System.load() with an absolute path which
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// is outside of the classloader library search path.
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//
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// This part effectively allows such a classloader to access anything
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// under /data and /mnt/expand
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std::string permitted_path = kWhitelistedDirectories;
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if (java_permitted_path != nullptr) {
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ScopedUtfChars path(env, java_permitted_path);
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if (path.c_str() != nullptr && path.size() > 0) {
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permitted_path = permitted_path + ":" + path.c_str();
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}
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}
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if (!initialized_ && !InitPublicNamespace(library_path.c_str(), error_msg)) {
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return nullptr;
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}
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bool found = FindNamespaceByClassLoader(env, class_loader);
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LOG_ALWAYS_FATAL_IF(found,
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"There is already a namespace associated with this classloader");
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uint64_t namespace_type = ANDROID_NAMESPACE_TYPE_ISOLATED;
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if (is_shared) {
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namespace_type |= ANDROID_NAMESPACE_TYPE_SHARED;
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}
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if (target_sdk_version < 24) {
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namespace_type |= ANDROID_NAMESPACE_TYPE_GREYLIST_ENABLED;
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}
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NativeLoaderNamespace* parent_ns = FindParentNamespaceByClassLoader(env, class_loader);
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bool is_native_bridge = false;
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if (parent_ns != nullptr) {
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is_native_bridge = !parent_ns->is_android_namespace();
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} else if (!library_path.empty()) {
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is_native_bridge = NativeBridgeIsPathSupported(library_path.c_str());
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}
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std::string system_exposed_libraries = system_public_libraries_;
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const char* namespace_name = kClassloaderNamespaceName;
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android_namespace_t* vndk_ns = nullptr;
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if (is_for_vendor && !is_shared) {
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LOG_FATAL_IF(is_native_bridge, "Unbundled vendor apk must not use translated architecture");
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// For vendor apks, give access to the vendor lib even though
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// they are treated as unbundled; the libs and apks are still bundled
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// together in the vendor partition.
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#if defined(__LP64__)
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std::string vendor_lib_path = "/vendor/lib64";
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#else
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std::string vendor_lib_path = "/vendor/lib";
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#endif
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library_path = library_path + ":" + vendor_lib_path.c_str();
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permitted_path = permitted_path + ":" + vendor_lib_path.c_str();
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// Also give access to LLNDK libraries since they are available to vendors
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system_exposed_libraries = system_exposed_libraries + ":" + system_llndk_libraries_.c_str();
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// Give access to VNDK-SP libraries from the 'vndk' namespace.
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vndk_ns = android_get_exported_namespace(kVndkNamespaceName);
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LOG_ALWAYS_FATAL_IF(vndk_ns == nullptr,
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"Cannot find \"%s\" namespace for vendor apks", kVndkNamespaceName);
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// Different name is useful for debugging
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namespace_name = kVendorClassloaderNamespaceName;
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ALOGD("classloader namespace configured for unbundled vendor apk. library_path=%s", library_path.c_str());
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} else {
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// oem and product public libraries are NOT available to vendor apks, otherwise it
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// would be system->vendor violation.
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if (!oem_public_libraries_.empty()) {
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system_exposed_libraries = system_exposed_libraries + ':' + oem_public_libraries_;
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}
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if (!product_public_libraries_.empty()) {
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system_exposed_libraries = system_exposed_libraries + ':' + product_public_libraries_;
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}
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}
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NativeLoaderNamespace native_loader_ns;
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if (!is_native_bridge) {
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android_namespace_t* android_parent_ns =
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parent_ns == nullptr ? nullptr : parent_ns->get_android_ns();
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android_namespace_t* ns = android_create_namespace(namespace_name,
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nullptr,
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library_path.c_str(),
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namespace_type,
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permitted_path.c_str(),
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android_parent_ns);
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if (ns == nullptr) {
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*error_msg = dlerror();
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return nullptr;
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}
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// Note that when vendor_ns is not configured this function will return nullptr
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// and it will result in linking vendor_public_libraries_ to the default namespace
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// which is expected behavior in this case.
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android_namespace_t* vendor_ns = android_get_exported_namespace(kVendorNamespaceName);
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if (!android_link_namespaces(ns, nullptr, system_exposed_libraries.c_str())) {
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*error_msg = dlerror();
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return nullptr;
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}
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if (vndk_ns != nullptr && !system_vndksp_libraries_.empty()) {
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// vendor apks are allowed to use VNDK-SP libraries.
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if (!android_link_namespaces(ns, vndk_ns, system_vndksp_libraries_.c_str())) {
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*error_msg = dlerror();
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return nullptr;
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}
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}
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if (!vendor_public_libraries_.empty()) {
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if (!android_link_namespaces(ns, vendor_ns, vendor_public_libraries_.c_str())) {
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*error_msg = dlerror();
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return nullptr;
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}
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}
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native_loader_ns = NativeLoaderNamespace(ns);
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} else {
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native_bridge_namespace_t* native_bridge_parent_namespace =
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parent_ns == nullptr ? nullptr : parent_ns->get_native_bridge_ns();
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native_bridge_namespace_t* ns = NativeBridgeCreateNamespace(namespace_name,
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nullptr,
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library_path.c_str(),
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namespace_type,
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permitted_path.c_str(),
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native_bridge_parent_namespace);
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if (ns == nullptr) {
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*error_msg = NativeBridgeGetError();
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return nullptr;
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}
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native_bridge_namespace_t* vendor_ns = NativeBridgeGetVendorNamespace();
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if (!NativeBridgeLinkNamespaces(ns, nullptr, system_exposed_libraries.c_str())) {
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*error_msg = NativeBridgeGetError();
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return nullptr;
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}
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if (!vendor_public_libraries_.empty()) {
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if (!NativeBridgeLinkNamespaces(ns, vendor_ns, vendor_public_libraries_.c_str())) {
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*error_msg = NativeBridgeGetError();
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return nullptr;
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}
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}
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native_loader_ns = NativeLoaderNamespace(ns);
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}
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namespaces_.push_back(std::make_pair(env->NewWeakGlobalRef(class_loader), native_loader_ns));
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return &(namespaces_.back().second);
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}
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NativeLoaderNamespace* FindNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
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auto it = std::find_if(namespaces_.begin(), namespaces_.end(),
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[&](const std::pair<jweak, NativeLoaderNamespace>& value) {
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return env->IsSameObject(value.first, class_loader);
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});
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if (it != namespaces_.end()) {
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return &it->second;
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}
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return nullptr;
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}
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void Initialize() {
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// Once public namespace is initialized there is no
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// point in running this code - it will have no effect
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// on the current list of public libraries.
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if (initialized_) {
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return;
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}
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std::vector<std::string> sonames;
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const char* android_root_env = getenv("ANDROID_ROOT");
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std::string root_dir = android_root_env != nullptr ? android_root_env : "/system";
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std::string public_native_libraries_system_config =
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root_dir + kPublicNativeLibrariesSystemConfigPathFromRoot;
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std::string llndk_native_libraries_system_config =
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root_dir + kLlndkNativeLibrariesSystemConfigPathFromRoot;
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std::string vndksp_native_libraries_system_config =
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root_dir + kVndkspNativeLibrariesSystemConfigPathFromRoot;
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std::string product_public_native_libraries_dir = "/product/etc";
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std::string error_msg;
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LOG_ALWAYS_FATAL_IF(
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!ReadConfig(public_native_libraries_system_config, &sonames, always_true, &error_msg),
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"Error reading public native library list from \"%s\": %s",
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public_native_libraries_system_config.c_str(), error_msg.c_str());
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// For debuggable platform builds use ANDROID_ADDITIONAL_PUBLIC_LIBRARIES environment
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// variable to add libraries to the list. This is intended for platform tests only.
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if (is_debuggable()) {
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const char* additional_libs = getenv("ANDROID_ADDITIONAL_PUBLIC_LIBRARIES");
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if (additional_libs != nullptr && additional_libs[0] != '\0') {
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std::vector<std::string> additional_libs_vector = base::Split(additional_libs, ":");
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std::copy(additional_libs_vector.begin(), additional_libs_vector.end(),
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std::back_inserter(sonames));
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}
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}
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// android_init_namespaces() expects all the public libraries
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// to be loaded so that they can be found by soname alone.
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//
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// TODO(dimitry): this is a bit misleading since we do not know
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// if the vendor public library is going to be opened from /vendor/lib
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// we might as well end up loading them from /system/lib or /product/lib
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// For now we rely on CTS test to catch things like this but
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// it should probably be addressed in the future.
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for (const auto& soname : sonames) {
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LOG_ALWAYS_FATAL_IF(dlopen(soname.c_str(), RTLD_NOW | RTLD_NODELETE) == nullptr,
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"Error preloading public library %s: %s", soname.c_str(), dlerror());
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}
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system_public_libraries_ = base::Join(sonames, ':');
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// read /system/etc/public.libraries-<companyname>.txt which contain partner defined
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// system libs that are exposed to apps. The libs in the txt files must be
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// named as lib<name>.<companyname>.so.
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sonames.clear();
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ReadExtensionLibraries(base::Dirname(public_native_libraries_system_config).c_str(), &sonames);
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oem_public_libraries_ = base::Join(sonames, ':');
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// read /product/etc/public.libraries-<companyname>.txt which contain partner defined
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// product libs that are exposed to apps.
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sonames.clear();
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ReadExtensionLibraries(product_public_native_libraries_dir.c_str(), &sonames);
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product_public_libraries_ = base::Join(sonames, ':');
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// Insert VNDK version to llndk and vndksp config file names.
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insert_vndk_version_str(&llndk_native_libraries_system_config);
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insert_vndk_version_str(&vndksp_native_libraries_system_config);
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sonames.clear();
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ReadConfig(llndk_native_libraries_system_config, &sonames, always_true);
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system_llndk_libraries_ = base::Join(sonames, ':');
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sonames.clear();
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ReadConfig(vndksp_native_libraries_system_config, &sonames, always_true);
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system_vndksp_libraries_ = base::Join(sonames, ':');
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sonames.clear();
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// This file is optional, quietly ignore if the file does not exist.
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ReadConfig(kPublicNativeLibrariesVendorConfig, &sonames, always_true, nullptr);
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vendor_public_libraries_ = base::Join(sonames, ':');
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}
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void Reset() { namespaces_.clear(); }
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private:
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void ReadExtensionLibraries(const char* dirname, std::vector<std::string>* sonames) {
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std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(dirname), closedir);
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if (dir != nullptr) {
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// Failing to opening the dir is not an error, which can happen in
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// webview_zygote.
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while (struct dirent* ent = readdir(dir.get())) {
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if (ent->d_type != DT_REG && ent->d_type != DT_LNK) {
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continue;
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}
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const std::string filename(ent->d_name);
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if (android::base::StartsWith(filename, kPublicNativeLibrariesExtensionConfigPrefix) &&
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android::base::EndsWith(filename, kPublicNativeLibrariesExtensionConfigSuffix)) {
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const size_t start = kPublicNativeLibrariesExtensionConfigPrefixLen;
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const size_t end = filename.size() - kPublicNativeLibrariesExtensionConfigSuffixLen;
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const std::string company_name = filename.substr(start, end - start);
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const std::string config_file_path = dirname + "/"s + filename;
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LOG_ALWAYS_FATAL_IF(
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company_name.empty(),
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"Error extracting company name from public native library list file path \"%s\"",
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config_file_path.c_str());
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std::string error_msg;
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LOG_ALWAYS_FATAL_IF(
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!ReadConfig(
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config_file_path, sonames,
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[&company_name](const std::string& soname, std::string* error_msg) {
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if (android::base::StartsWith(soname, "lib") &&
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android::base::EndsWith(soname, "." + company_name + ".so")) {
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return true;
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} else {
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*error_msg = "Library name \"" + soname +
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"\" does not end with the company name: " + company_name + ".";
|
|
return false;
|
|
}
|
|
},
|
|
&error_msg),
|
|
"Error reading public native library list from \"%s\": %s", config_file_path.c_str(),
|
|
error_msg.c_str());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
bool ReadConfig(const std::string& configFile, std::vector<std::string>* sonames,
|
|
const std::function<bool(const std::string& /* soname */,
|
|
std::string* /* error_msg */)>& check_soname,
|
|
std::string* error_msg = nullptr) {
|
|
// Read list of public native libraries from the config file.
|
|
std::string file_content;
|
|
if(!base::ReadFileToString(configFile, &file_content)) {
|
|
if (error_msg) *error_msg = strerror(errno);
|
|
return false;
|
|
}
|
|
|
|
std::vector<std::string> lines = base::Split(file_content, "\n");
|
|
|
|
for (auto& line : lines) {
|
|
auto trimmed_line = base::Trim(line);
|
|
if (trimmed_line[0] == '#' || trimmed_line.empty()) {
|
|
continue;
|
|
}
|
|
size_t space_pos = trimmed_line.rfind(' ');
|
|
if (space_pos != std::string::npos) {
|
|
std::string type = trimmed_line.substr(space_pos + 1);
|
|
if (type != "32" && type != "64") {
|
|
if (error_msg) *error_msg = "Malformed line: " + line;
|
|
return false;
|
|
}
|
|
#if defined(__LP64__)
|
|
// Skip 32 bit public library.
|
|
if (type == "32") {
|
|
continue;
|
|
}
|
|
#else
|
|
// Skip 64 bit public library.
|
|
if (type == "64") {
|
|
continue;
|
|
}
|
|
#endif
|
|
trimmed_line.resize(space_pos);
|
|
}
|
|
|
|
if (check_soname(trimmed_line, error_msg)) {
|
|
sonames->push_back(trimmed_line);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool InitPublicNamespace(const char* library_path, std::string* error_msg) {
|
|
// Ask native bride if this apps library path should be handled by it
|
|
bool is_native_bridge = NativeBridgeIsPathSupported(library_path);
|
|
|
|
// (http://b/25844435) - Some apps call dlopen from generated code (mono jited
|
|
// code is one example) unknown to linker in which case linker uses anonymous
|
|
// namespace. The second argument specifies the search path for the anonymous
|
|
// namespace which is the library_path of the classloader.
|
|
initialized_ = android_init_anonymous_namespace(system_public_libraries_.c_str(),
|
|
is_native_bridge ? nullptr : library_path);
|
|
if (!initialized_) {
|
|
*error_msg = dlerror();
|
|
return false;
|
|
}
|
|
|
|
// and now initialize native bridge namespaces if necessary.
|
|
if (NativeBridgeInitialized()) {
|
|
initialized_ = NativeBridgeInitAnonymousNamespace(system_public_libraries_.c_str(),
|
|
is_native_bridge ? library_path : nullptr);
|
|
if (!initialized_) {
|
|
*error_msg = NativeBridgeGetError();
|
|
}
|
|
}
|
|
|
|
return initialized_;
|
|
}
|
|
|
|
jobject GetParentClassLoader(JNIEnv* env, jobject class_loader) {
|
|
jclass class_loader_class = env->FindClass("java/lang/ClassLoader");
|
|
jmethodID get_parent = env->GetMethodID(class_loader_class,
|
|
"getParent",
|
|
"()Ljava/lang/ClassLoader;");
|
|
|
|
return env->CallObjectMethod(class_loader, get_parent);
|
|
}
|
|
|
|
NativeLoaderNamespace* FindParentNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
|
|
jobject parent_class_loader = GetParentClassLoader(env, class_loader);
|
|
|
|
while (parent_class_loader != nullptr) {
|
|
NativeLoaderNamespace* ns;
|
|
if ((ns = FindNamespaceByClassLoader(env, parent_class_loader)) != nullptr) {
|
|
return ns;
|
|
}
|
|
|
|
parent_class_loader = GetParentClassLoader(env, parent_class_loader);
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
bool initialized_;
|
|
std::list<std::pair<jweak, NativeLoaderNamespace>> namespaces_;
|
|
std::string system_public_libraries_;
|
|
std::string vendor_public_libraries_;
|
|
std::string oem_public_libraries_;
|
|
std::string product_public_libraries_;
|
|
std::string system_llndk_libraries_;
|
|
std::string system_vndksp_libraries_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(LibraryNamespaces);
|
|
};
|
|
|
|
static std::mutex g_namespaces_mutex;
|
|
static LibraryNamespaces* g_namespaces = new LibraryNamespaces;
|
|
#endif
|
|
|
|
void InitializeNativeLoader() {
|
|
#if defined(__ANDROID__)
|
|
std::lock_guard<std::mutex> guard(g_namespaces_mutex);
|
|
g_namespaces->Initialize();
|
|
#endif
|
|
}
|
|
|
|
void ResetNativeLoader() {
|
|
#if defined(__ANDROID__)
|
|
std::lock_guard<std::mutex> guard(g_namespaces_mutex);
|
|
g_namespaces->Reset();
|
|
#endif
|
|
}
|
|
|
|
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) {
|
|
#if defined(__ANDROID__)
|
|
std::lock_guard<std::mutex> guard(g_namespaces_mutex);
|
|
|
|
std::string error_msg;
|
|
bool success = g_namespaces->Create(env,
|
|
target_sdk_version,
|
|
class_loader,
|
|
is_shared,
|
|
is_for_vendor,
|
|
library_path,
|
|
permitted_path,
|
|
&error_msg) != nullptr;
|
|
if (!success) {
|
|
return env->NewStringUTF(error_msg.c_str());
|
|
}
|
|
#else
|
|
UNUSED(env, target_sdk_version, class_loader, is_shared, is_for_vendor,
|
|
library_path, permitted_path);
|
|
#endif
|
|
return nullptr;
|
|
}
|
|
|
|
void* OpenNativeLibrary(JNIEnv* env,
|
|
int32_t target_sdk_version,
|
|
const char* path,
|
|
jobject class_loader,
|
|
jstring library_path,
|
|
bool* needs_native_bridge,
|
|
std::string* error_msg) {
|
|
#if defined(__ANDROID__)
|
|
UNUSED(target_sdk_version);
|
|
if (class_loader == nullptr) {
|
|
*needs_native_bridge = false;
|
|
return dlopen(path, RTLD_NOW);
|
|
}
|
|
|
|
std::lock_guard<std::mutex> guard(g_namespaces_mutex);
|
|
NativeLoaderNamespace* ns;
|
|
|
|
if ((ns = g_namespaces->FindNamespaceByClassLoader(env, class_loader)) == nullptr) {
|
|
// This is the case where the classloader was not created by ApplicationLoaders
|
|
// In this case we create an isolated not-shared namespace for it.
|
|
if ((ns = g_namespaces->Create(env,
|
|
target_sdk_version,
|
|
class_loader,
|
|
false /* is_shared */,
|
|
false /* is_for_vendor */,
|
|
library_path,
|
|
nullptr,
|
|
error_msg)) == nullptr) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
return OpenNativeLibrary(ns, path, needs_native_bridge, error_msg);
|
|
#else
|
|
UNUSED(env, target_sdk_version, class_loader);
|
|
|
|
// Do some best effort to emulate library-path support. It will not
|
|
// work for dependencies.
|
|
//
|
|
// Note: null has a special meaning and must be preserved.
|
|
std::string c_library_path; // Empty string by default.
|
|
if (library_path != nullptr && path != nullptr && path[0] != '/') {
|
|
ScopedUtfChars library_path_utf_chars(env, library_path);
|
|
c_library_path = library_path_utf_chars.c_str();
|
|
}
|
|
|
|
std::vector<std::string> library_paths = base::Split(c_library_path, ":");
|
|
|
|
for (const std::string& lib_path : library_paths) {
|
|
*needs_native_bridge = false;
|
|
const char* path_arg;
|
|
std::string complete_path;
|
|
if (path == nullptr) {
|
|
// Preserve null.
|
|
path_arg = nullptr;
|
|
} else {
|
|
complete_path = lib_path;
|
|
if (!complete_path.empty()) {
|
|
complete_path.append("/");
|
|
}
|
|
complete_path.append(path);
|
|
path_arg = complete_path.c_str();
|
|
}
|
|
void* handle = dlopen(path_arg, RTLD_NOW);
|
|
if (handle != nullptr) {
|
|
return handle;
|
|
}
|
|
if (NativeBridgeIsSupported(path_arg)) {
|
|
*needs_native_bridge = true;
|
|
handle = NativeBridgeLoadLibrary(path_arg, RTLD_NOW);
|
|
if (handle != nullptr) {
|
|
return handle;
|
|
}
|
|
*error_msg = NativeBridgeGetError();
|
|
} else {
|
|
*error_msg = dlerror();
|
|
}
|
|
}
|
|
return nullptr;
|
|
#endif
|
|
}
|
|
|
|
bool CloseNativeLibrary(void* handle, const bool needs_native_bridge) {
|
|
return needs_native_bridge ? NativeBridgeUnloadLibrary(handle) :
|
|
dlclose(handle);
|
|
}
|
|
|
|
#if defined(__ANDROID__)
|
|
void* OpenNativeLibrary(NativeLoaderNamespace* ns, const char* path, bool* needs_native_bridge,
|
|
std::string* error_msg) {
|
|
if (ns->is_android_namespace()) {
|
|
android_dlextinfo extinfo;
|
|
extinfo.flags = ANDROID_DLEXT_USE_NAMESPACE;
|
|
extinfo.library_namespace = ns->get_android_ns();
|
|
|
|
void* handle = android_dlopen_ext(path, RTLD_NOW, &extinfo);
|
|
if (handle == nullptr) {
|
|
*error_msg = dlerror();
|
|
}
|
|
*needs_native_bridge = false;
|
|
return handle;
|
|
} else {
|
|
void* handle = NativeBridgeLoadLibraryExt(path, RTLD_NOW, ns->get_native_bridge_ns());
|
|
if (handle == nullptr) {
|
|
*error_msg = NativeBridgeGetError();
|
|
}
|
|
*needs_native_bridge = true;
|
|
return handle;
|
|
}
|
|
}
|
|
|
|
// native_bridge_namespaces are not supported for callers of this function.
|
|
// This function will return nullptr in the case when application is running
|
|
// on native bridge.
|
|
android_namespace_t* FindNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
|
|
std::lock_guard<std::mutex> guard(g_namespaces_mutex);
|
|
NativeLoaderNamespace* ns = g_namespaces->FindNamespaceByClassLoader(env, class_loader);
|
|
if (ns != nullptr) {
|
|
return ns->is_android_namespace() ? ns->get_android_ns() : nullptr;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
NativeLoaderNamespace* FindNativeLoaderNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
|
|
std::lock_guard<std::mutex> guard(g_namespaces_mutex);
|
|
return g_namespaces->FindNamespaceByClassLoader(env, class_loader);
|
|
}
|
|
#endif
|
|
|
|
}; // android namespace
|