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// 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 <fs/managed_vfs.h>
#include <fs/vfs.h>
#include <fs/vnode.h>
#include "src/storage/blobfs/blobfs.h"
#include "src/storage/blobfs/mount.h"
namespace blobfs {
class QueryService;
// 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.
class Runner : public fs::ManagedVfs {
public:
DISALLOW_COPY_ASSIGN_AND_MOVE(Runner);
virtual ~Runner();
static zx_status_t Create(async::Loop* loop, std::unique_ptr<BlockDevice> device,
const MountOptions& options, zx::resource vmex_resource,
zx::channel diagnostics_dir_server, std::unique_ptr<Runner>* out);
// fs::ManagedVfs interface.
void Shutdown(fs::Vfs::ShutdownCallback closure) final;
// Other methods.
// Serves the root directory of the filesystem using |root| as the server-end
// of an IPC connection.
zx_status_t ServeRoot(zx::channel root, ServeLayout layout);
private:
Runner(async::Loop* loop, std::unique_ptr<Blobfs> fs);
// Check if filesystem is readonly.
bool IsReadonly() FS_TA_EXCLUDES(vfs_lock_);
async::Loop* loop_;
std::unique_ptr<Blobfs> blobfs_;
fbl::RefPtr<QueryService> query_svc_;
};
} // namespace blobfs
#endif // SRC_STORAGE_BLOBFS_RUNNER_H_