blob: d07ff7fd34698559aeccc3300c886eefa8609344 [file] [log] [blame]
// Copyright 2022 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.
#include <lib/fdio/namespace.h>
#include <lib/zx/result.h>
#include <memory>
#include "src/storage/memfs/memfs.h"
// A wrapper around memfs that automatically mounts and unmounts itself at a given path.
class MountedMemfs {
MountedMemfs(MountedMemfs&&) = default;
~MountedMemfs() { [[maybe_unused]] zx_status_t status = fdio_ns_unbind(ns_, path_.c_str()); }
const std::unique_ptr<memfs::Memfs>& operator->() const { return memfs_; }
// Create and automatically mount a memfs instance at the given path in the local namespace. This
// will be unmounted on cleanup.
// Memfs will run on the given dispatcher.
static zx::result<MountedMemfs> Create(async_dispatcher_t* dispatcher, const char* path);
MountedMemfs(std::unique_ptr<memfs::Memfs> memfs, fdio_ns_t* ns, const char* path)
: memfs_(std::move(memfs)), ns_(ns), path_(path) {}
std::unique_ptr<memfs::Memfs> memfs_;
fdio_ns_t* ns_;
std::string path_;