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83 lines
3.2 KiB
83 lines
3.2 KiB
/*
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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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#ifndef ART_LIBNATIVELOADER_NATIVE_LOADER_NAMESPACE_H_
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#define ART_LIBNATIVELOADER_NATIVE_LOADER_NAMESPACE_H_
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#if defined(ART_TARGET_ANDROID)
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#include <string>
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#include <variant>
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#include <vector>
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#include <android-base/logging.h>
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#include <android-base/result.h>
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#include <android/dlext.h>
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#include <log/log.h>
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#include <nativebridge/native_bridge.h>
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namespace android {
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using android::base::Result;
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// NativeLoaderNamespace abstracts a linker namespace for the native
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// architecture (ex: arm on arm) or the translated architecture (ex: arm on
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// x86). Instances of this class are managed by LibraryNamespaces object.
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struct NativeLoaderNamespace {
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public:
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static Result<NativeLoaderNamespace> Create(const std::string& name,
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const std::string& search_paths,
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const std::string& permitted_paths,
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const NativeLoaderNamespace* parent, bool is_shared,
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bool is_exempt_list_enabled,
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bool also_used_as_anonymous);
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NativeLoaderNamespace(NativeLoaderNamespace&&) = default;
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NativeLoaderNamespace(const NativeLoaderNamespace&) = default;
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NativeLoaderNamespace& operator=(const NativeLoaderNamespace&) = default;
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android_namespace_t* ToRawAndroidNamespace() const { return std::get<0>(raw_); }
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native_bridge_namespace_t* ToRawNativeBridgeNamespace() const { return std::get<1>(raw_); }
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std::string name() const { return name_; }
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bool IsBridged() const { return raw_.index() == 1; }
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// Creates a link from this namespace to target for the ":"-separated list of
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// libraries in shared_libs. If target is nullptr it creates a link to the
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// default namespace.
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Result<void> Link(const NativeLoaderNamespace* target, const std::string& shared_libs) const;
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Result<void*> Load(const char* lib_name) const;
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static Result<NativeLoaderNamespace> GetExportedNamespace(const std::string& name,
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bool is_bridged);
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static Result<NativeLoaderNamespace> GetSystemNamespace(bool is_bridged);
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private:
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explicit NativeLoaderNamespace(const std::string& name, android_namespace_t* ns)
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: name_(name), raw_(ns) {}
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explicit NativeLoaderNamespace(const std::string& name, native_bridge_namespace_t* ns)
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: name_(name), raw_(ns) {}
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std::string name_;
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std::variant<android_namespace_t*, native_bridge_namespace_t*> raw_;
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};
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} // namespace android
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#endif // #if defined(ART_TARGET_ANDROID)
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#endif // ART_LIBNATIVELOADER_NATIVE_LOADER_NAMESPACE_H_
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