1 //
2 // Copyright (C) 2016 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 // http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16
17 #include "update_engine/daemon_state_android.h"
18
19 #include <base/logging.h>
20
21 #include "update_engine/common/boot_control.h"
22 #include "update_engine/common/boot_control_stub.h"
23 #include "update_engine/common/hardware.h"
24 #include "update_engine/common/prefs.h"
25 #include "update_engine/update_attempter_android.h"
26
27 namespace chromeos_update_engine {
28
Initialize()29 bool DaemonStateAndroid::Initialize() {
30 boot_control_ = boot_control::CreateBootControl();
31 if (!boot_control_) {
32 LOG(WARNING) << "Unable to create BootControl instance, using stub "
33 << "instead. All update attempts will fail.";
34 boot_control_.reset(new BootControlStub());
35 }
36
37 hardware_ = hardware::CreateHardware();
38 if (!hardware_) {
39 LOG(ERROR) << "Error intializing the HardwareInterface.";
40 return false;
41 }
42
43 LOG_IF(INFO, !hardware_->IsNormalBootMode()) << "Booted in dev mode.";
44 LOG_IF(INFO, !hardware_->IsOfficialBuild()) << "Booted non-official build.";
45
46 // Initialize prefs.
47 base::FilePath non_volatile_path;
48 // TODO(deymo): Fall back to in-memory prefs if there's no physical directory
49 // available.
50 if (!hardware_->GetNonVolatileDirectory(&non_volatile_path)) {
51 LOG(ERROR) << "Failed to get a non-volatile directory.";
52 return false;
53 }
54 Prefs* prefs = new Prefs();
55 prefs_.reset(prefs);
56 if (!prefs->Init(non_volatile_path.Append(kPrefsSubDirectory))) {
57 LOG(ERROR) << "Failed to initialize preferences.";
58 return false;
59 }
60
61 // Initialize the UpdateAttempter before the UpdateManager.
62 update_attempter_.reset(new UpdateAttempterAndroid(
63 this, prefs_.get(), boot_control_.get(), hardware_.get()));
64
65 return true;
66 }
67
StartUpdater()68 bool DaemonStateAndroid::StartUpdater() {
69 // The DaemonState in Android is a passive daemon. It will only start applying
70 // an update when instructed to do so from the exposed binder API.
71 update_attempter_->Init();
72 return true;
73 }
74
AddObserver(ServiceObserverInterface * observer)75 void DaemonStateAndroid::AddObserver(ServiceObserverInterface* observer) {
76 service_observers_.insert(observer);
77 }
78
RemoveObserver(ServiceObserverInterface * observer)79 void DaemonStateAndroid::RemoveObserver(ServiceObserverInterface* observer) {
80 service_observers_.erase(observer);
81 }
82
service_delegate()83 ServiceDelegateAndroidInterface* DaemonStateAndroid::service_delegate() {
84 return update_attempter_.get();
85 }
86
87 } // namespace chromeos_update_engine
88