| // Copyright 2019 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_RUNNER_H_ |
| #define SRC_STORAGE_BLOBFS_RUNNER_H_ |
| |
| #include <lib/async-loop/cpp/loop.h> |
| #include <lib/async-loop/default.h> |
| #include <lib/trace/event.h> |
| #include <lib/zx/resource.h> |
| #include <lib/zx/status.h> |
| |
| #include "src/lib/storage/vfs/cpp/managed_vfs.h" |
| #include "src/lib/storage/vfs/cpp/paged_vfs.h" |
| #include "src/storage/blobfs/blobfs.h" |
| #include "src/storage/blobfs/mount.h" |
| |
| namespace blobfs { |
| |
| // A wrapper class around a "Blobfs" object which additionally manages external IPC connections. |
| // |
| // Using this interface, a caller can initialize a Blobfs object and access the filesystem hierarchy |
| // through the ulib/fs Vnode classes, but not modify the internal structure of the filesystem. |
| // |
| // 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 Runner final : public fs::PagedVfs { |
| public: |
| DISALLOW_COPY_ASSIGN_AND_MOVE(Runner); |
| |
| virtual ~Runner(); |
| |
| static zx::status<std::unique_ptr<Runner>> Create(async::Loop* loop, |
| std::unique_ptr<BlockDevice> device, |
| const MountOptions& options, |
| zx::resource vmex_resource); |
| |
| // fs::PagedVfs implementation. |
| void Shutdown(fs::FuchsiaVfs::ShutdownCallback closure) final; |
| zx::status<fs::FilesystemInfo> GetFilesystemInfo() final; |
| |
| // Serves the root directory of the filesystem using |root| as the server-end of an IPC |
| // connection. |
| zx_status_t ServeRoot(fidl::ServerEnd<fuchsia_io::Directory> root); |
| |
| private: |
| explicit Runner(async::Loop* loop, int32_t paging_threads = 1); |
| |
| // Check if filesystem is readonly. |
| bool IsReadonly() __TA_EXCLUDES(vfs_lock_); |
| |
| async::Loop* loop_; |
| std::unique_ptr<Blobfs> blobfs_; |
| }; |
| |
| } // namespace blobfs |
| |
| #endif // SRC_STORAGE_BLOBFS_RUNNER_H_ |