deploy/installer/server/parent_monitor_android.cc

/*
 * Copyright (C) 2021 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 "tools/base/deploy/common/event.h"
#include "tools/base/deploy/installer/server/parent_monitor.h"

#include <signal.h>
#include <stdlib.h>
#include <sys/prctl.h>

namespace {
void onSignUP(int signo) {
  deploy::LogEvent("Installerd has terminated (SIGHUP). Exiting.");
  exit(EXIT_SUCCESS);
}
}  // namespace

namespace deploy {
namespace ParentMonitor {
void Install() {
  // Request an interrupt SIGHUP when parent terminates.
  signal(SIGHUP, onSignUP);
  prctl(PR_SET_PDEATHSIG, SIGHUP);
}
}  // namespace ParentMonitor
}  // namespace deploy