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https://github.com/RGBCube/serenity
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93e172895a
When writing to /sys/kernel/request_panic it will do a kernel panic. Trying to truncate the node will result in kernel panic with a slightly different message.
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
/*
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* Copyright (c) 2023, 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/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/OpenFileDescription.h>
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#include <Kernel/FileSystem/SysFS/Component.h>
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#include <Kernel/Library/KBufferBuilder.h>
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#include <Kernel/Library/UserOrKernelBuffer.h>
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namespace Kernel {
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class SysFSSystemRequestPanic final : public SysFSComponent {
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public:
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static NonnullRefPtr<SysFSSystemRequestPanic> must_create(SysFSDirectory const& parent_directory);
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virtual StringView name() const override { return "request_panic"sv; }
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private:
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explicit SysFSSystemRequestPanic(SysFSDirectory const& parent_directory)
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: SysFSComponent(parent_directory)
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{
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}
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// ^SysFSComponent
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virtual ErrorOr<size_t> read_bytes(off_t offset, size_t count, UserOrKernelBuffer& buffer, OpenFileDescription* description) const override;
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virtual ErrorOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) override;
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virtual mode_t permissions() const override { return 0600; }
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virtual ErrorOr<void> truncate(u64) override;
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};
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}
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