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121 lines
3.9 KiB
121 lines
3.9 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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// Framework-side code runs in this namespace. Libs from /vendor partition can't
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// be loaded in this namespace.
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#include "linkerconfig/common.h"
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#include "linkerconfig/environment.h"
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#include "linkerconfig/namespace.h"
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#include "linkerconfig/namespacebuilder.h"
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using android::linkerconfig::modules::IsProductVndkVersionDefined;
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using android::linkerconfig::modules::Namespace;
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namespace android {
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namespace linkerconfig {
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namespace contents {
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void SetupSystemPermittedPaths(Namespace* ns) {
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std::string product = Var("PRODUCT");
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std::string system_ext = Var("SYSTEM_EXT");
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// We can't have entire /system/${LIB} as permitted paths because doing so
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// makes it possible to load libs in /system/${LIB}/vndk* directories by
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// their absolute paths, e.g. dlopen("/system/lib/vndk/libbase.so"). VNDK
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// libs are built with previous versions of Android and thus must not be
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// loaded into this namespace where libs built with the current version of
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// Android are loaded. Mixing the two types of libs in the same namespace
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// can cause unexpected problems.
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const std::vector<std::string> permitted_paths = {
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"/system/${LIB}/drm",
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"/system/${LIB}/extractors",
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"/system/${LIB}/hw",
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system_ext + "/${LIB}",
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// These are where odex files are located. libart has to be able to dlopen
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// the files
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"/system/framework",
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"/system/app",
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"/system/priv-app",
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system_ext + "/framework",
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system_ext + "/app",
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system_ext + "/priv-app",
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"/vendor/framework",
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"/vendor/app",
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"/vendor/priv-app",
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"/system/vendor/framework",
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"/system/vendor/app",
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"/system/vendor/priv-app",
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"/odm/framework",
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"/odm/app",
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"/odm/priv-app",
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"/oem/app",
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product + "/framework",
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product + "/app",
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product + "/priv-app",
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"/data",
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"/mnt/expand",
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"/apex/com.android.runtime/${LIB}/bionic",
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"/system/${LIB}/bootstrap",
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};
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for (const std::string& path : permitted_paths) {
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ns->AddPermittedPath(path);
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}
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if (!IsProductVndkVersionDefined()) {
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// System processes can use product libs only if product VNDK is not enforced.
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ns->AddPermittedPath(product + "/${LIB}");
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}
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}
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Namespace BuildSystemDefaultNamespace([[maybe_unused]] const Context& ctx) {
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bool is_fully_treblelized = ctx.IsDefaultConfig();
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std::string product = Var("PRODUCT");
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std::string system_ext = Var("SYSTEM_EXT");
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// Visible to allow links to be created at runtime, e.g. through
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// android_link_namespaces in libnativeloader.
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Namespace ns("default",
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/*is_isolated=*/is_fully_treblelized,
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/*is_visible=*/true);
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ns.AddSearchPath("/system/${LIB}");
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ns.AddSearchPath(system_ext + "/${LIB}");
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if (!IsProductVndkVersionDefined() || !is_fully_treblelized) {
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// System processes can search product libs only if product VNDK is not
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// enforced.
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ns.AddSearchPath(product + "/${LIB}");
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}
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if (!is_fully_treblelized) {
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ns.AddSearchPath("/vendor/${LIB}");
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ns.AddSearchPath("/odm/${LIB}");
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}
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if (is_fully_treblelized) {
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SetupSystemPermittedPaths(&ns);
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}
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ns.AddRequires(ctx.GetSystemRequireLibs());
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ns.AddProvides(ctx.GetSystemProvideLibs());
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return ns;
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}
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} // namespace contents
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} // namespace linkerconfig
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} // namespace android
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