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//
// Copyright (C) 2015 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#ifndef UPDATE_ENGINE_COMMON_BOOT_CONTROL_STUB_H_
#define UPDATE_ENGINE_COMMON_BOOT_CONTROL_STUB_H_
#include <memory>
#include <string>
#include "update_engine/common/boot_control_interface.h"
#include "update_engine/common/dynamic_partition_control_interface.h"
namespace chromeos_update_engine {
// An implementation of the BootControlInterface that does nothing,
// typically used when e.g. an underlying HAL implementation cannot be
// loaded or doesn't exist.
//
// You are guaranteed that the implementation of GetNumSlots() method
// always returns 0. This can be used to identify that this
// implementation is in use.
class BootControlStub : public BootControlInterface {
public:
BootControlStub();
~BootControlStub() = default;
// BootControlInterface overrides.
unsigned int GetNumSlots() const override;
BootControlInterface::Slot GetCurrentSlot() const override;
bool GetPartitionDevice(const std::string& partition_name,
Slot slot,
bool not_in_payload,
std::string* device,
bool* is_dynamic) const override;
bool GetPartitionDevice(const std::string& partition_name,
BootControlInterface::Slot slot,
std::string* device) const override;
std::optional<PartitionDevice> GetPartitionDevice(
const std::string& partition_name,
uint32_t slot,
uint32_t current_slot,
bool not_in_payload = false) const override;
bool IsSlotBootable(BootControlInterface::Slot slot) const override;
bool MarkSlotUnbootable(BootControlInterface::Slot slot) override;
bool SetActiveBootSlot(BootControlInterface::Slot slot) override;
Slot GetActiveBootSlot() override { return kInvalidSlot; }
bool MarkBootSuccessfulAsync(base::Callback<void(bool)> callback) override;
bool IsSlotMarkedSuccessful(BootControlInterface::Slot slot) const override;
DynamicPartitionControlInterface* GetDynamicPartitionControl() override;
private:
std::unique_ptr<DynamicPartitionControlInterface> dynamic_partition_control_;
DISALLOW_COPY_AND_ASSIGN(BootControlStub);
};
} // namespace chromeos_update_engine
#endif // UPDATE_ENGINE_COMMON_BOOT_CONTROL_STUB_H_