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// Copyright (c) 2013 The Chromium OS 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 CHROMEOS_PLATFORM_UPDATE_ENGINE_HARDWARE_INTERFACE_H_
#define CHROMEOS_PLATFORM_UPDATE_ENGINE_HARDWARE_INTERFACE_H_
#include <string>
#include <vector>
namespace chromeos_update_engine {
// The hardware interface allows access to the following parts of the system,
// closely related to the hardware:
// * crossystem exposed properties: firmware, hwid, etc.
// * Physical disk: partition booted from and partition name conversions.
// These stateless functions are tied together in this interface to facilitate
// unit testing.
class HardwareInterface {
public:
// Returns the currently booted kernel partition. "/dev/sda2", for example.
virtual std::string BootKernelDevice() const = 0;
// Returns the currently booted rootfs partition. "/dev/sda3", for example.
virtual std::string BootDevice() const = 0;
// Returns a list of all kernel partitions available (whether bootable or not)
virtual std::vector<std::string> GetKernelDevices() const = 0;
// Is the specified kernel partition currently bootable, based on GPT flags?
// Returns success.
virtual bool IsKernelBootable(const std::string& kernel_device,
bool* bootable) const = 0;
// Mark the specified kernel partition unbootable in GPT flags. We mark
// the other kernel as bootable inside postinst, not inside the UE.
// Returns success.
virtual bool MarkKernelUnbootable(const std::string& kernel_device) = 0;
// Returns true if this is an official Chrome OS build, false otherwise.
virtual bool IsOfficialBuild() const = 0;
// Returns true if the boot mode is normal or if it's unable to
// determine the boot mode. Returns false if the boot mode is
// developer.
virtual bool IsNormalBootMode() const = 0;
// Returns the HWID or an empty string on error.
virtual std::string GetHardwareClass() const = 0;
// Returns the firmware version or an empty string if the system is
// not running chrome os firmware.
virtual std::string GetFirmwareVersion() const = 0;
// Returns the ec version or an empty string if the system is not
// running a custom chrome os ec.
virtual std::string GetECVersion() const = 0;
virtual ~HardwareInterface() {}
};
} // namespace chromeos_update_engine
#endif // CHROMEOS_PLATFORM_UPDATE_ENGINE_HARDWARE_INTERFACE_H_
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