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/*
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/AtomicRefCounted.h>
#include <AK/Error.h>
#include <AK/Function.h>
#include <AK/OwnPtr.h>
#include <AK/RefPtr.h>
#include <AK/Types.h>
#include <Kernel/FileSystem/File.h>
#include <Kernel/FileSystem/FileSystem.h>
#include <Kernel/FileSystem/OpenFileDescription.h>
#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/GlobalInformation.h>
#include <Kernel/KBufferBuilder.h>
#include <Kernel/KString.h>
#include <Kernel/Locking/Mutex.h>
#include <Kernel/Time/TimeManagement.h>
#include <Kernel/UserOrKernelBuffer.h>
namespace Kernel {
class SysFSSystemStringVariable : public SysFSGlobalInformation {
protected:
explicit SysFSSystemStringVariable(SysFSDirectory const& parent_directory)
: SysFSGlobalInformation(parent_directory)
{
}
virtual ErrorOr<NonnullOwnPtr<KString>> value() const = 0;
virtual void set_value(NonnullOwnPtr<KString> new_value) = 0;
private:
// ^SysFSGlobalInformation
virtual ErrorOr<void> try_generate(KBufferBuilder&) override final;
// ^SysFSExposedComponent
virtual ErrorOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) override final;
virtual mode_t permissions() const override { return 0644; }
virtual ErrorOr<void> truncate(u64) override final;
};
}
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