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/*
* 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.
*/
#ifndef ART_LIBNATIVELOADER_LIBRARY_NAMESPACES_H_
#define ART_LIBNATIVELOADER_LIBRARY_NAMESPACES_H_
#if !defined(ART_TARGET_ANDROID)
#error "Not available for host or linux target"
#endif
#include <list>
#include <optional>
#include <string>
#include <string_view>
#include "android-base/result.h"
#include "jni.h"
#include "native_loader_namespace.h"
namespace android::nativeloader {
using android::base::Result;
// The device may be configured to have the vendor libraries loaded to a separate namespace.
// For historical reasons this namespace was named sphal but effectively it is intended
// to use to load vendor libraries to separate namespace with controlled interface between
// vendor and system namespaces.
constexpr const char* kVendorNamespaceName = "sphal";
// Similar to sphal namespace, product namespace provides some product libraries.
constexpr const char* kProductNamespaceName = "product";
// vndk namespace for unbundled vendor apps
constexpr const char* kVndkNamespaceName = "vndk";
// vndk_product namespace for unbundled product apps
constexpr const char* kVndkProductNamespaceName = "vndk_product";
// API domains, roughly corresponding to partitions. Interdependencies between
// these must follow API restrictions, while intradependencies do not.
using ApiDomain = enum {
API_DOMAIN_DEFAULT = 0, // Locations other than those below, in particular for ordinary apps
API_DOMAIN_VENDOR = 1, // Vendor partition
API_DOMAIN_PRODUCT = 2, // Product partition
API_DOMAIN_SYSTEM = 3, // System and system_ext partitions
};
ApiDomain GetApiDomainFromPath(const std::string_view path);
Result<ApiDomain> GetApiDomainFromPathList(const std::string& path_list);
bool IsPartitionNativeLibPath(const std::string& path);
// LibraryNamespaces is a singleton object that manages NativeLoaderNamespace
// objects for an app process. Its main job is to create (and configure) a new
// NativeLoaderNamespace object for a Java ClassLoader, and to find an existing
// object for a given ClassLoader.
class LibraryNamespaces {
public:
LibraryNamespaces() : initialized_(false), app_main_namespace_(nullptr) {}
LibraryNamespaces(LibraryNamespaces&&) = default;
LibraryNamespaces(const LibraryNamespaces&) = delete;
LibraryNamespaces& operator=(const LibraryNamespaces&) = delete;
void Initialize();
void Reset() {
namespaces_.clear();
initialized_ = false;
app_main_namespace_ = nullptr;
}
Result<NativeLoaderNamespace*> Create(JNIEnv* env,
uint32_t target_sdk_version,
jobject class_loader,
ApiDomain api_domain,
bool is_shared,
const std::string& dex_path,
jstring library_path_j,
jstring permitted_path_j,
jstring uses_library_list_j);
NativeLoaderNamespace* FindNamespaceByClassLoader(JNIEnv* env, jobject class_loader);
private:
Result<void> InitPublicNamespace(const char* library_path);
NativeLoaderNamespace* FindParentNamespaceByClassLoader(JNIEnv* env, jobject class_loader);
bool initialized_;
NativeLoaderNamespace* app_main_namespace_;
std::list<std::pair<jweak, NativeLoaderNamespace>> namespaces_;
};
std::optional<std::string> FindApexNamespaceName(const std::string& location);
} // namespace android::nativeloader
#endif // ART_LIBNATIVELOADER_LIBRARY_NAMESPACES_H_
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