| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "components/arc/volume_mounter/arc_volume_mounter_bridge.h" |
| |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "base/memory/singleton.h" |
| #include "base/task_scheduler/post_task.h" |
| #include "chromeos/disks/disk_mount_manager.h" |
| #include "components/arc/arc_bridge_service.h" |
| #include "components/arc/arc_browser_context_keyed_service_factory_base.h" |
| |
| using chromeos::disks::DiskMountManager; |
| |
| namespace arc { |
| |
| namespace { |
| |
| // Sends MountEvents of all existing MountPoints in cros-disks. |
| void SendAllMountEvents(ArcVolumeMounterBridge* bridge) { |
| for (const auto& keyValue : DiskMountManager::GetInstance()->mount_points()) { |
| bridge->OnMountEvent(DiskMountManager::MountEvent::MOUNTING, |
| chromeos::MountError::MOUNT_ERROR_NONE, |
| keyValue.second); |
| } |
| } |
| |
| // Singleton factory for ArcVolumeMounterBridge. |
| class ArcVolumeMounterBridgeFactory |
| : public internal::ArcBrowserContextKeyedServiceFactoryBase< |
| ArcVolumeMounterBridge, |
| ArcVolumeMounterBridgeFactory> { |
| public: |
| // Factory name used by ArcBrowserContextKeyedServiceFactoryBase. |
| static constexpr const char* kName = "ArcVolumeMounterBridgeFactory"; |
| |
| static ArcVolumeMounterBridgeFactory* GetInstance() { |
| return base::Singleton<ArcVolumeMounterBridgeFactory>::get(); |
| } |
| |
| private: |
| friend base::DefaultSingletonTraits<ArcVolumeMounterBridgeFactory>; |
| ArcVolumeMounterBridgeFactory() = default; |
| ~ArcVolumeMounterBridgeFactory() override = default; |
| }; |
| |
| } // namespace |
| |
| // static |
| ArcVolumeMounterBridge* ArcVolumeMounterBridge::GetForBrowserContext( |
| content::BrowserContext* context) { |
| return ArcVolumeMounterBridgeFactory::GetForBrowserContext(context); |
| } |
| |
| ArcVolumeMounterBridge::ArcVolumeMounterBridge(content::BrowserContext* context, |
| ArcBridgeService* bridge_service) |
| : arc_bridge_service_(bridge_service) { |
| arc_bridge_service_->volume_mounter()->AddObserver(this); |
| DCHECK(DiskMountManager::GetInstance()); |
| DiskMountManager::GetInstance()->AddObserver(this); |
| } |
| |
| ArcVolumeMounterBridge::~ArcVolumeMounterBridge() { |
| DiskMountManager::GetInstance()->RemoveObserver(this); |
| arc_bridge_service_->volume_mounter()->RemoveObserver(this); |
| } |
| |
| void ArcVolumeMounterBridge::OnInstanceReady() { |
| base::PostTaskWithTraits(FROM_HERE, |
| {base::TaskPriority::USER_BLOCKING, |
| base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN}, |
| base::BindOnce(&SendAllMountEvents, this)); |
| } |
| |
| void ArcVolumeMounterBridge::OnDiskEvent( |
| chromeos::disks::DiskMountManager::DiskEvent event, |
| const chromeos::disks::DiskMountManager::Disk* disk) { |
| // Ignored. DiskEvents will be maintained in Vold during MountEvents. |
| } |
| |
| void ArcVolumeMounterBridge::OnDeviceEvent( |
| chromeos::disks::DiskMountManager::DeviceEvent event, |
| const std::string& device_path) { |
| // Ignored. ARC doesn't care about events other than Disk and Mount events. |
| } |
| |
| void ArcVolumeMounterBridge::OnFormatEvent( |
| chromeos::disks::DiskMountManager::FormatEvent event, |
| chromeos::FormatError error_code, |
| const std::string& device_path) { |
| // Ignored. ARC doesn't care about events other than Disk and Mount events. |
| } |
| |
| void ArcVolumeMounterBridge::OnRenameEvent( |
| chromeos::disks::DiskMountManager::RenameEvent event, |
| chromeos::RenameError error_code, |
| const std::string& device_path) { |
| // Ignored. ARC doesn't care about events other than Disk and Mount events. |
| } |
| |
| void ArcVolumeMounterBridge::OnMountEvent( |
| DiskMountManager::MountEvent event, |
| chromeos::MountError error_code, |
| const chromeos::disks::DiskMountManager::MountPointInfo& mount_info) { |
| if (error_code != chromeos::MountError::MOUNT_ERROR_NONE) { |
| DVLOG(1) << "Error " << error_code << "occurs during MountEvent " << event; |
| return; |
| } |
| |
| // Get disks informations that are needed by Android MountService. |
| const chromeos::disks::DiskMountManager::Disk* disk = |
| DiskMountManager::GetInstance()->FindDiskBySourcePath( |
| mount_info.source_path); |
| std::string fs_uuid, device_label; |
| chromeos::DeviceType device_type = chromeos::DeviceType::DEVICE_TYPE_UNKNOWN; |
| // There are several cases where disk can be null: |
| // 1. The disk is removed physically before being ejected/unmounted. |
| // 2. The disk is inserted, but then immediately removed physically. The |
| // disk removal will race with mount event in this case. |
| if (disk) { |
| fs_uuid = disk->fs_uuid(); |
| device_label = disk->device_label(); |
| device_type = disk->device_type(); |
| } else { |
| DVLOG(1) << "Disk at " << mount_info.source_path |
| << " is null during MountEvent " << event; |
| } |
| |
| mojom::VolumeMounterInstance* volume_mounter_instance = |
| ARC_GET_INSTANCE_FOR_METHOD(arc_bridge_service_->volume_mounter(), |
| OnMountEvent); |
| |
| if (!volume_mounter_instance) |
| return; |
| |
| volume_mounter_instance->OnMountEvent(mojom::MountPointInfo::New( |
| event, mount_info.source_path, mount_info.mount_path, fs_uuid, |
| device_label, device_type)); |
| } |
| |
| } // namespace arc |