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/*
* Copyright (c) 2023, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/AtomicRefCounted.h>
#include <AK/Error.h>
#include <AK/Types.h>
#include <Kernel/FileSystem/SysFS/Component.h>
#include <Kernel/Library/UserOrKernelBuffer.h>
namespace Kernel {
class SysFSSystemConstantInformation final : public SysFSComponent {
public:
enum class NodeName {
LoadBase,
CommandLine,
SystemMode,
};
enum class ReadableByJailedProcesses {
Yes,
No,
};
virtual StringView name() const override;
static NonnullRefPtr<SysFSSystemConstantInformation> must_create(SysFSDirectory const& parent_directory, NonnullOwnPtr<KBuffer> constant_data_buffer, mode_t mode, ReadableByJailedProcesses readable_by_jailed_processes, NodeName name);
virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
private:
SysFSSystemConstantInformation(SysFSDirectory const& parent_directory, NonnullOwnPtr<KBuffer> constant_data_buffer, mode_t mode, ReadableByJailedProcesses readable_by_jailed_processes, NodeName name)
: SysFSComponent(parent_directory)
, m_constant_data_buffer(move(constant_data_buffer))
, m_permissions(mode)
, m_readable_by_jailed_processes(readable_by_jailed_processes)
, m_node_name(name)
{
}
virtual size_t size() const override { return m_constant_data_buffer->size(); }
virtual mode_t permissions() const override { return m_permissions; }
NonnullOwnPtr<KBuffer> m_constant_data_buffer;
mode_t const m_permissions { 0644 };
ReadableByJailedProcesses const m_readable_by_jailed_processes { ReadableByJailedProcesses::No };
NodeName const m_node_name { NodeName::LoadBase };
};
}
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