mirror of
https://github.com/RGBCube/serenity
synced 2026-01-14 13:51:00 +00:00
b02ee664e7
To do this we also need to get rid of LockRefPtrs in the USB code as well. Most of the SysFS nodes are statically generated during boot and are not mutated afterwards. The same goes for general device code - once we generate the appropriate SysFS nodes, we almost never mutate the node pointers afterwards, making locking unnecessary.
44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/AtomicRefCounted.h>
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#include <AK/Error.h>
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#include <AK/Function.h>
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#include <AK/RefPtr.h>
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#include <AK/Types.h>
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#include <Kernel/FileSystem/File.h>
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#include <Kernel/FileSystem/FileSystem.h>
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#include <Kernel/FileSystem/OpenFileDescription.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/GlobalInformation.h>
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#include <Kernel/KBufferBuilder.h>
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#include <Kernel/Locking/Mutex.h>
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#include <Kernel/Time/TimeManagement.h>
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#include <Kernel/UserOrKernelBuffer.h>
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namespace Kernel {
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class SysFSSystemBooleanVariable : public SysFSGlobalInformation {
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protected:
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explicit SysFSSystemBooleanVariable(SysFSDirectory const& parent_directory)
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: SysFSGlobalInformation(parent_directory)
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{
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}
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virtual bool value() const = 0;
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virtual void set_value(bool new_value) = 0;
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private:
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// ^SysFSGlobalInformation
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virtual ErrorOr<void> try_generate(KBufferBuilder&) override final;
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// ^SysFSExposedComponent
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virtual ErrorOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) override final;
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virtual mode_t permissions() const override final { return 0644; }
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virtual ErrorOr<void> truncate(u64) override final;
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};
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}
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