zircon/system/ulib/blobfs/include/blobfs/vmoid-registry.h

// 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.

#pragma once

#include <lib/zx/vmo.h>
#include <zircon/device/block.h>
#include <zircon/types.h>

namespace blobfs {

// An interface which controls attaching and detaching VMOs with the underlying device.
class VmoidRegistry {
public:
    virtual ~VmoidRegistry() = default;

    // Allocates a vmoid registering a VMO with the underlying block device.
    virtual zx_status_t AttachVmo(const zx::vmo& vmo, vmoid_t* out) = 0;

    // Releases an allocated vmoid.
    virtual zx_status_t DetachVmo(vmoid_t vmoid) = 0;
};

} // namespace blobfs