blob: 6b2d3175edffb54e1b86cf46adb2156da272e538 [file] [log] [blame]
//
// Copyright (C) 2015 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 "update_engine/daemon.h"
#include <sysexits.h>
#include <base/bind.h>
#include <base/location.h>
#include <base/time/time.h>
#if USE_WEAVE || USE_BINDER
#include <binderwrapper/binder_wrapper.h>
#endif // USE_WEAVE || USE_BINDER
#if USE_OMAHA
#include "update_engine/real_system_state.h"
#else // !USE_OMAHA
#include "update_engine/daemon_state_android.h"
#endif // USE_OMAHA
#if USE_DBUS
namespace {
const int kDBusSystemMaxWaitSeconds = 2 * 60;
} // namespace
#endif // USE_DBUS
namespace chromeos_update_engine {
int UpdateEngineDaemon::OnInit() {
// Register the |subprocess_| singleton with this Daemon as the signal
// handler.
subprocess_.Init(this);
int exit_code = Daemon::OnInit();
if (exit_code != EX_OK)
return exit_code;
#if USE_WEAVE || USE_BINDER
android::BinderWrapper::Create();
binder_watcher_.Init();
#endif // USE_WEAVE || USE_BINDER
#if USE_DBUS
// We wait for the D-Bus connection for up two minutes to avoid re-spawning
// the daemon too fast causing thrashing if dbus-daemon is not running.
scoped_refptr<dbus::Bus> bus = dbus_connection_.ConnectWithTimeout(
base::TimeDelta::FromSeconds(kDBusSystemMaxWaitSeconds));
if (!bus) {
// TODO(deymo): Make it possible to run update_engine even if dbus-daemon
// is not running or constantly crashing.
LOG(ERROR) << "Failed to initialize DBus, aborting.";
return 1;
}
CHECK(bus->SetUpAsyncOperations());
#endif // USE_DBUS
#if USE_OMAHA
// Initialize update engine global state but continue if something fails.
// TODO(deymo): Move the daemon_state_ initialization to a factory method
// avoiding the explicit re-usage of the |bus| instance, shared between
// D-Bus service and D-Bus client calls.
RealSystemState* real_system_state = new RealSystemState(bus);
daemon_state_.reset(real_system_state);
LOG_IF(ERROR, !real_system_state->Initialize())
<< "Failed to initialize system state.";
#else // !USE_OMAHA
DaemonStateAndroid* daemon_state_android = new DaemonStateAndroid();
daemon_state_.reset(daemon_state_android);
LOG_IF(ERROR, !daemon_state_android->Initialize())
<< "Failed to initialize system state.";
#endif // USE_OMAHA
#if USE_BINDER
// Create the Binder Service.
#if USE_OMAHA
binder_service_ = new BinderUpdateEngineBrilloService{real_system_state};
#else // !USE_OMAHA
binder_service_ = new BinderUpdateEngineAndroidService{
daemon_state_android->service_delegate()};
#endif // USE_OMAHA
auto binder_wrapper = android::BinderWrapper::Get();
if (!binder_wrapper->RegisterService(binder_service_->ServiceName(),
binder_service_)) {
LOG(ERROR) << "Failed to register binder service.";
}
daemon_state_->AddObserver(binder_service_.get());
#endif // USE_BINDER
#if USE_DBUS
// Create the DBus service.
dbus_adaptor_.reset(new UpdateEngineAdaptor(real_system_state, bus));
daemon_state_->AddObserver(dbus_adaptor_.get());
dbus_adaptor_->RegisterAsync(base::Bind(&UpdateEngineDaemon::OnDBusRegistered,
base::Unretained(this)));
LOG(INFO) << "Waiting for DBus object to be registered.";
#else // !USE_DBUS
daemon_state_->StartUpdater();
#endif // USE_DBUS
return EX_OK;
}
#if USE_DBUS
void UpdateEngineDaemon::OnDBusRegistered(bool succeeded) {
if (!succeeded) {
LOG(ERROR) << "Registering the UpdateEngineAdaptor";
QuitWithExitCode(1);
return;
}
// Take ownership of the service now that everything is initialized. We need
// to this now and not before to avoid exposing a well known DBus service
// path that doesn't have the service it is supposed to implement.
if (!dbus_adaptor_->RequestOwnership()) {
LOG(ERROR) << "Unable to take ownership of the DBus service, is there "
<< "other update_engine daemon running?";
QuitWithExitCode(1);
return;
}
daemon_state_->StartUpdater();
}
#endif // USE_DBUS
} // namespace chromeos_update_engine