| // Copyright 2021 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_STORAGE_BLOBFS_COMPONENT_RUNNER_H_ |
| #define SRC_STORAGE_BLOBFS_COMPONENT_RUNNER_H_ |
| |
| #include <fidl/fuchsia.device.manager/cpp/wire.h> |
| #include <fidl/fuchsia.process.lifecycle/cpp/wire.h> |
| #include <lib/async-loop/cpp/loop.h> |
| #include <lib/async-loop/default.h> |
| #include <lib/zx/resource.h> |
| #include <lib/zx/status.h> |
| |
| #include <optional> |
| |
| #include "src/lib/storage/vfs/cpp/managed_vfs.h" |
| #include "src/lib/storage/vfs/cpp/paged_vfs.h" |
| #include "src/lib/storage/vfs/cpp/pseudo_dir.h" |
| #include "src/storage/blobfs/blobfs.h" |
| #include "src/storage/blobfs/mount.h" |
| |
| namespace blobfs { |
| |
| // TODO(fxbug.dev/90698): Once everything launches blobfs as a component, delete the old Runner |
| // class and rename this just Runner. |
| // |
| // The Runner class *has* to be final because it calls PagedVfs::TearDown from |
| // its destructor which is required to ensure thread-safety at destruction time. |
| class ComponentRunner final : public fs::PagedVfs { |
| public: |
| explicit ComponentRunner(async::Loop& loop); |
| |
| ComponentRunner(const ComponentRunner&) = delete; |
| ComponentRunner& operator=(const ComponentRunner&) = delete; |
| |
| ~ComponentRunner(); |
| |
| // fs::PagedVfs interface. |
| void Shutdown(fs::FuchsiaVfs::ShutdownCallback cb) final; |
| zx::status<fs::FilesystemInfo> GetFilesystemInfo() final; |
| |
| zx::status<> ServeRoot(fidl::ServerEnd<fuchsia_io::Directory> root, |
| fidl::ServerEnd<fuchsia_process_lifecycle::Lifecycle> lifecycle, |
| fidl::ClientEnd<fuchsia_device_manager::Administrator> driver_admin_client, |
| zx::resource vmex_resource); |
| zx::status<> Configure(std::unique_ptr<BlockDevice> device, const MountOptions& options); |
| |
| private: |
| // Tell driver_manager to remove all drivers living in storage. This must be called before |
| // shutting down. `callback` will be called once all drivers living in storage have been |
| // unbound and removed. |
| void RemoveSystemDrivers(fit::callback<void(zx_status_t)> callback); |
| |
| async::Loop& loop_; |
| |
| zx::resource vmex_resource_; |
| |
| // These are initialized when ServeRoot is called. |
| fbl::RefPtr<fs::PseudoDir> outgoing_; |
| fidl::WireSharedClient<fuchsia_device_manager::Administrator> driver_admin_; |
| |
| // These are created when ServeRoot is called, and are consumed by a successful call to |
| // Configure. This causes any incoming requests to queue in the channel pair until we start |
| // serving the directories, after we start the filesystem and the services. |
| fidl::ServerEnd<fuchsia_io::Directory> svc_server_end_; |
| fidl::ServerEnd<fuchsia_io::Directory> root_server_end_; |
| |
| // These are only initialized by configure after a call to the startup service. |
| std::unique_ptr<Blobfs> blobfs_; |
| }; |
| |
| } // namespace blobfs |
| |
| #endif // SRC_STORAGE_BLOBFS_COMPONENT_RUNNER_H_ |