mirror of
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.
88 lines
4.9 KiB
C++
88 lines
4.9 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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#include <AK/Error.h>
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#include <AK/Try.h>
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#include <Kernel/Boot/CommandLine.h>
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#include <Kernel/FileSystem/SysFS/Component.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/CPUInfo.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Configuration/Directory.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/ConstantInformation.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Directory.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/DiskUsage.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/GlobalInformation.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Interrupts.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Jails.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Keymap.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Log.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/MemoryStatus.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Network/Directory.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/PowerStateSwitch.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Processes.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Profile.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/RequestPanic.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/SystemStatistics.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/Uptime.h>
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namespace Kernel {
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UNMAP_AFTER_INIT NonnullRefPtr<SysFSGlobalKernelStatsDirectory> SysFSGlobalKernelStatsDirectory::must_create(SysFSRootDirectory const& root_directory)
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{
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auto global_kernel_stats_directory = adopt_ref_if_nonnull(new (nothrow) SysFSGlobalKernelStatsDirectory(root_directory)).release_nonnull();
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MUST(global_kernel_stats_directory->m_child_components.with([&](auto& list) -> ErrorOr<void> {
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list.append(SysFSDiskUsage::must_create(*global_kernel_stats_directory));
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list.append(SysFSMemoryStatus::must_create(*global_kernel_stats_directory));
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list.append(SysFSSystemStatistics::must_create(*global_kernel_stats_directory));
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list.append(SysFSOverallProcesses::must_create(*global_kernel_stats_directory));
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list.append(SysFSCPUInformation::must_create(*global_kernel_stats_directory));
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list.append(SysFSKernelLog::must_create(*global_kernel_stats_directory));
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list.append(SysFSInterrupts::must_create(*global_kernel_stats_directory));
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list.append(SysFSKeymap::must_create(*global_kernel_stats_directory));
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list.append(SysFSUptime::must_create(*global_kernel_stats_directory));
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list.append(SysFSProfile::must_create(*global_kernel_stats_directory));
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list.append(SysFSPowerStateSwitchNode::must_create(*global_kernel_stats_directory));
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list.append(SysFSJails::must_create(*global_kernel_stats_directory));
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list.append(SysFSSystemRequestPanic::must_create(*global_kernel_stats_directory));
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list.append(SysFSGlobalNetworkStatsDirectory::must_create(*global_kernel_stats_directory));
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list.append(SysFSKernelConfigurationDirectory::must_create(*global_kernel_stats_directory));
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{
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auto builder = TRY(KBufferBuilder::try_create());
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MUST(builder.appendff("{}", kernel_load_base));
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auto load_base_buffer = builder.build();
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VERIFY(load_base_buffer);
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list.append(SysFSSystemConstantInformation::must_create(*global_kernel_stats_directory, load_base_buffer.release_nonnull(), S_IRUSR, SysFSSystemConstantInformation::ReadableByJailedProcesses::No, SysFSSystemConstantInformation::NodeName::LoadBase));
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}
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{
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auto builder = TRY(KBufferBuilder::try_create());
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MUST(builder.append(kernel_command_line().string()));
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MUST(builder.append('\n'));
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auto command_line_buffer = builder.build();
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VERIFY(command_line_buffer);
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list.append(SysFSSystemConstantInformation::must_create(*global_kernel_stats_directory, command_line_buffer.release_nonnull(), S_IRUSR | S_IRGRP | S_IROTH, SysFSSystemConstantInformation::ReadableByJailedProcesses::No, SysFSSystemConstantInformation::NodeName::CommandLine));
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}
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{
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auto builder = TRY(KBufferBuilder::try_create());
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MUST(builder.append(kernel_command_line().system_mode()));
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MUST(builder.append('\n'));
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auto system_mode_buffer = builder.build();
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VERIFY(system_mode_buffer);
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list.append(SysFSSystemConstantInformation::must_create(*global_kernel_stats_directory, system_mode_buffer.release_nonnull(), S_IRUSR | S_IRGRP | S_IROTH, SysFSSystemConstantInformation::ReadableByJailedProcesses::No, SysFSSystemConstantInformation::NodeName::SystemMode));
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}
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return {};
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}));
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return global_kernel_stats_directory;
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}
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UNMAP_AFTER_INIT SysFSGlobalKernelStatsDirectory::SysFSGlobalKernelStatsDirectory(SysFSDirectory const& root_directory)
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: SysFSDirectory(root_directory)
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{
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}
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}
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