contents/namespace/rs.cc

/*
 * 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.
 */

// This namespace is exclusively for Renderscript internal libraries. This
// namespace has slightly looser restriction than the vndk namespace because of
// the genuine characteristics of Renderscript; /data is in the permitted path
// to load the compiled *.so file and libmediandk.so can be used here.

#include "linkerconfig/namespacebuilder.h"

#include <android-base/strings.h>

#include "linkerconfig/environment.h"

using android::linkerconfig::modules::Namespace;

namespace android {
namespace linkerconfig {
namespace contents {
Namespace BuildRsNamespace([[maybe_unused]] const Context& ctx) {
  Namespace ns(
      "rs", /*is_isolated=*/!ctx.IsUnrestrictedSection(), /*is_visible=*/true);

  bool vendor_vndk_enabled =
      android::linkerconfig::modules::IsVendorVndkVersionDefined();

  ns.AddSearchPath("/odm/${LIB}/vndk-sp");
  ns.AddSearchPath("/vendor/${LIB}/vndk-sp");
  if (vendor_vndk_enabled) {
    ns.AddSearchPath("/apex/com.android.vndk.v" + Var("VENDOR_VNDK_VERSION") +
                     "/${LIB}");
  }
  ns.AddSearchPath("/odm/${LIB}");
  ns.AddSearchPath("/vendor/${LIB}");

  ns.AddPermittedPath("/odm/${LIB}");
  ns.AddPermittedPath("/vendor/${LIB}");
  ns.AddPermittedPath("/system/vendor/${LIB}");
  ns.AddPermittedPath("/data");

  AddLlndkLibraries(ctx, &ns, VndkUserPartition::Vendor);
  if (vendor_vndk_enabled) {
    // Private LLNDK libs (e.g. libft2.so) are exceptionally allowed to this
    // namespace because RS framework libs are using them.
    ns.GetLink(ctx.GetSystemNamespaceName())
        .AddSharedLib(Var("PRIVATE_LLNDK_LIBRARIES_VENDOR", ""));
  } else {
    // libft2.so is a special library which is used by RS framework libs, while
    // other vendor libraries not allowed to use it. Add link to libft2.so as a
    // exceptional case only from this namespace.
    ns.GetLink(ctx.GetSystemNamespaceName()).AddSharedLib("libft2.so");
  }

  return ns;
}
}  // namespace contents
}  // namespace linkerconfig
}  // namespace android