modules/apex.cc

/*
 * Copyright (C) 2020 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.
 */
#include "linkerconfig/apex.h"

#include <unistd.h>

#include <apexutil.h>

#include "linkerconfig/stringutil.h"

namespace {

bool DirExists(const std::string& path) {
  return access(path.c_str(), F_OK) == 0;
}

}  // namespace

namespace android {
namespace linkerconfig {
namespace modules {

std::map<std::string, ApexInfo> ScanActiveApexes(const std::string& root) {
  std::map<std::string, ApexInfo> apexes;
  const auto apex_root = root + apex::kApexRoot;
  for (const auto& [path, manifest] : apex::GetActivePackages(apex_root)) {
    bool has_bin = DirExists(path + "/bin");
    bool has_lib = DirExists(path + "/lib") || DirExists(path + "/lib64");
    ApexInfo info(manifest.name(),
                  TrimPrefix(path, root),
                  {manifest.providenativelibs().begin(),
                   manifest.providenativelibs().end()},
                  {manifest.requirenativelibs().begin(),
                   manifest.requirenativelibs().end()},
                  has_bin,
                  has_lib);
    apexes.emplace(manifest.name(), std::move(info));
  }
  return apexes;
}

}  // namespace modules
}  // namespace linkerconfig
}  // namespace android