source: https://github.com/processhacker/processhacker/blob/master/phnt/include/ntexapi.h

 

// rev
// private
typedef enum _SYSTEM_INFORMATION_CLASS
{
    SystemBasicInformation, // q: SYSTEM_BASIC_INFORMATION
    SystemProcessorInformation, // q: SYSTEM_PROCESSOR_INFORMATION
    SystemPerformanceInformation, // q: SYSTEM_PERFORMANCE_INFORMATION
    SystemTimeOfDayInformation, // q: SYSTEM_TIMEOFDAY_INFORMATION
    SystemPathInformation, // not implemented
    SystemProcessInformation, // q: SYSTEM_PROCESS_INFORMATION
    SystemCallCountInformation, // q: SYSTEM_CALL_COUNT_INFORMATION
    SystemDeviceInformation, // q: SYSTEM_DEVICE_INFORMATION
    SystemProcessorPerformanceInformation, // q: SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION
    SystemFlagsInformation, // q: SYSTEM_FLAGS_INFORMATION
    SystemCallTimeInformation, // not implemented // SYSTEM_CALL_TIME_INFORMATION // 10
    SystemModuleInformation, // q: RTL_PROCESS_MODULES
    SystemLocksInformation, // q: RTL_PROCESS_LOCKS
    SystemStackTraceInformation, // q: RTL_PROCESS_BACKTRACES
    SystemPagedPoolInformation, // not implemented
    SystemNonPagedPoolInformation, // not implemented
    SystemHandleInformation, // q: SYSTEM_HANDLE_INFORMATION
    SystemObjectInformation, // q: SYSTEM_OBJECTTYPE_INFORMATION mixed with SYSTEM_OBJECT_INFORMATION
    SystemPageFileInformation, // q: SYSTEM_PAGEFILE_INFORMATION
    SystemVdmInstemulInformation, // q
    SystemVdmBopInformation, // not implemented // 20
    SystemFileCacheInformation, // q: SYSTEM_FILECACHE_INFORMATION; s (requires SeIncreaseQuotaPrivilege) (info for WorkingSetTypeSystemCache)
    SystemPoolTagInformation, // q: SYSTEM_POOLTAG_INFORMATION
    SystemInterruptInformation, // q: SYSTEM_INTERRUPT_INFORMATION
    SystemDpcBehaviorInformation, // q: SYSTEM_DPC_BEHAVIOR_INFORMATION; s: SYSTEM_DPC_BEHAVIOR_INFORMATION (requires SeLoadDriverPrivilege)
    SystemFullMemoryInformation, // not implemented
    SystemLoadGdiDriverInformation, // s (kernel-mode only)
    SystemUnloadGdiDriverInformation, // s (kernel-mode only)
    SystemTimeAdjustmentInformation, // q: SYSTEM_QUERY_TIME_ADJUST_INFORMATION; s: SYSTEM_SET_TIME_ADJUST_INFORMATION (requires SeSystemtimePrivilege)
    SystemSummaryMemoryInformation, // not implemented
    SystemMirrorMemoryInformation, // s (requires license value "Kernel-MemoryMirroringSupported") (requires SeShutdownPrivilege) // 30
    SystemPerformanceTraceInformation, // q; s: (type depends on EVENT_TRACE_INFORMATION_CLASS)
    SystemObsolete0, // not implemented
    SystemExceptionInformation, // q: SYSTEM_EXCEPTION_INFORMATION
    SystemCrashDumpStateInformation, // s (requires SeDebugPrivilege)
    SystemKernelDebuggerInformation, // q: SYSTEM_KERNEL_DEBUGGER_INFORMATION
    SystemContextSwitchInformation, // q: SYSTEM_CONTEXT_SWITCH_INFORMATION
    SystemRegistryQuotaInformation, // q: SYSTEM_REGISTRY_QUOTA_INFORMATION; s (requires SeIncreaseQuotaPrivilege)
    SystemExtendServiceTableInformation, // s (requires SeLoadDriverPrivilege) // loads win32k only
    SystemPrioritySeperation, // s (requires SeTcbPrivilege)
    SystemVerifierAddDriverInformation, // s (requires SeDebugPrivilege) // 40
    SystemVerifierRemoveDriverInformation, // s (requires SeDebugPrivilege)
    SystemProcessorIdleInformation, // q: SYSTEM_PROCESSOR_IDLE_INFORMATION
    SystemLegacyDriverInformation, // q: SYSTEM_LEGACY_DRIVER_INFORMATION
    SystemCurrentTimeZoneInformation, // q; s: RTL_TIME_ZONE_INFORMATION
    SystemLookasideInformation, // q: SYSTEM_LOOKASIDE_INFORMATION
    SystemTimeSlipNotification, // s (requires SeSystemtimePrivilege)
    SystemSessionCreate, // not implemented
    SystemSessionDetach, // not implemented
    SystemSessionInformation, // not implemented (SYSTEM_SESSION_INFORMATION)
    SystemRangeStartInformation, // q: SYSTEM_RANGE_START_INFORMATION // 50
    SystemVerifierInformation, // q: SYSTEM_VERIFIER_INFORMATION; s (requires SeDebugPrivilege)
    SystemVerifierThunkExtend, // s (kernel-mode only)
    SystemSessionProcessInformation, // q: SYSTEM_SESSION_PROCESS_INFORMATION
    SystemLoadGdiDriverInSystemSpace, // s (kernel-mode only) (same as SystemLoadGdiDriverInformation)
    SystemNumaProcessorMap, // q
    SystemPrefetcherInformation, // q: PREFETCHER_INFORMATION; s: PREFETCHER_INFORMATION // PfSnQueryPrefetcherInformation
    SystemExtendedProcessInformation, // q: SYSTEM_PROCESS_INFORMATION
    SystemRecommendedSharedDataAlignment, // q
    SystemComPlusPackage, // q; s
    SystemNumaAvailableMemory, // 60
    SystemProcessorPowerInformation, // q: SYSTEM_PROCESSOR_POWER_INFORMATION
    SystemEmulationBasicInformation,
    SystemEmulationProcessorInformation,
    SystemExtendedHandleInformation, // q: SYSTEM_HANDLE_INFORMATION_EX
    SystemLostDelayedWriteInformation, // q: ULONG
    SystemBigPoolInformation, // q: SYSTEM_BIGPOOL_INFORMATION
    SystemSessionPoolTagInformation, // q: SYSTEM_SESSION_POOLTAG_INFORMATION
    SystemSessionMappedViewInformation, // q: SYSTEM_SESSION_MAPPED_VIEW_INFORMATION
    SystemHotpatchInformation, // q; s: SYSTEM_HOTPATCH_CODE_INFORMATION
    SystemObjectSecurityMode, // q: ULONG // 70
    SystemWatchdogTimerHandler, // s (kernel-mode only)
    SystemWatchdogTimerInformation, // q (kernel-mode only); s (kernel-mode only)
    SystemLogicalProcessorInformation, // q: SYSTEM_LOGICAL_PROCESSOR_INFORMATION
    SystemWow64SharedInformationObsolete, // not implemented
    SystemRegisterFirmwareTableInformationHandler, // s (kernel-mode only)
    SystemFirmwareTableInformation, // SYSTEM_FIRMWARE_TABLE_INFORMATION
    SystemModuleInformationEx, // q: RTL_PROCESS_MODULE_INFORMATION_EX
    SystemVerifierTriageInformation, // not implemented
    SystemSuperfetchInformation, // q; s: SUPERFETCH_INFORMATION // PfQuerySuperfetchInformation
    SystemMemoryListInformation, // q: SYSTEM_MEMORY_LIST_INFORMATION; s: SYSTEM_MEMORY_LIST_COMMAND (requires SeProfileSingleProcessPrivilege) // 80
    SystemFileCacheInformationEx, // q: SYSTEM_FILECACHE_INFORMATION; s (requires SeIncreaseQuotaPrivilege) (same as SystemFileCacheInformation)
    SystemThreadPriorityClientIdInformation, // s: SYSTEM_THREAD_CID_PRIORITY_INFORMATION (requires SeIncreaseBasePriorityPrivilege)
    SystemProcessorIdleCycleTimeInformation, // q: SYSTEM_PROCESSOR_IDLE_CYCLE_TIME_INFORMATION[]
    SystemVerifierCancellationInformation, // not implemented // name:wow64:whNT32QuerySystemVerifierCancellationInformation
    SystemProcessorPowerInformationEx, // not implemented
    SystemRefTraceInformation, // q; s: SYSTEM_REF_TRACE_INFORMATION // ObQueryRefTraceInformation
    SystemSpecialPoolInformation, // q; s (requires SeDebugPrivilege) // MmSpecialPoolTag, then MmSpecialPoolCatchOverruns != 0
    SystemProcessIdInformation, // q: SYSTEM_PROCESS_ID_INFORMATION
    SystemErrorPortInformation, // s (requires SeTcbPrivilege)
    SystemBootEnvironmentInformation, // q: SYSTEM_BOOT_ENVIRONMENT_INFORMATION // 90
    SystemHypervisorInformation, // q; s (kernel-mode only)
    SystemVerifierInformationEx, // q; s: SYSTEM_VERIFIER_INFORMATION_EX
    SystemTimeZoneInformation, // s (requires SeTimeZonePrivilege)
    SystemImageFileExecutionOptionsInformation, // s: SYSTEM_IMAGE_FILE_EXECUTION_OPTIONS_INFORMATION (requires SeTcbPrivilege)
    SystemCoverageInformation, // q; s // name:wow64:whNT32QuerySystemCoverageInformation; ExpCovQueryInformation
    SystemPrefetchPatchInformation, // not implemented
    SystemVerifierFaultsInformation, // s (requires SeDebugPrivilege)
    SystemSystemPartitionInformation, // q: SYSTEM_SYSTEM_PARTITION_INFORMATION
    SystemSystemDiskInformation, // q: SYSTEM_SYSTEM_DISK_INFORMATION
    SystemProcessorPerformanceDistribution, // q: SYSTEM_PROCESSOR_PERFORMANCE_DISTRIBUTION // 100
    SystemNumaProximityNodeInformation,
    SystemDynamicTimeZoneInformation, // q; s (requires SeTimeZonePrivilege)
    SystemCodeIntegrityInformation, // q: SYSTEM_CODEINTEGRITY_INFORMATION // SeCodeIntegrityQueryInformation
    SystemProcessorMicrocodeUpdateInformation, // s
    SystemProcessorBrandString, // q // HaliQuerySystemInformation -> HalpGetProcessorBrandString, info class 23
    SystemVirtualAddressInformation, // q: SYSTEM_VA_LIST_INFORMATION[]; s: SYSTEM_VA_LIST_INFORMATION[] (requires SeIncreaseQuotaPrivilege) // MmQuerySystemVaInformation
    SystemLogicalProcessorAndGroupInformation, // q: SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX // since WIN7 // KeQueryLogicalProcessorRelationship
    SystemProcessorCycleTimeInformation, // q: SYSTEM_PROCESSOR_CYCLE_TIME_INFORMATION[]
    SystemStoreInformation, // q; s: SYSTEM_STORE_INFORMATION // SmQueryStoreInformation
    SystemRegistryAppendString, // s: SYSTEM_REGISTRY_APPEND_STRING_PARAMETERS // 110
    SystemAitSamplingValue, // s: ULONG (requires SeProfileSingleProcessPrivilege)
    SystemVhdBootInformation, // q: SYSTEM_VHD_BOOT_INFORMATION
    SystemCpuQuotaInformation, // q; s // PsQueryCpuQuotaInformation
    SystemNativeBasicInformation, // not implemented
    SystemSpare1, // not implemented
    SystemLowPriorityIoInformation, // q: SYSTEM_LOW_PRIORITY_IO_INFORMATION
    SystemTpmBootEntropyInformation, // q: TPM_BOOT_ENTROPY_NT_RESULT // ExQueryTpmBootEntropyInformation
    SystemVerifierCountersInformation, // q: SYSTEM_VERIFIER_COUNTERS_INFORMATION
    SystemPagedPoolInformationEx, // q: SYSTEM_FILECACHE_INFORMATION; s (requires SeIncreaseQuotaPrivilege) (info for WorkingSetTypePagedPool)
    SystemSystemPtesInformationEx, // q: SYSTEM_FILECACHE_INFORMATION; s (requires SeIncreaseQuotaPrivilege) (info for WorkingSetTypeSystemPtes) // 120
    SystemNodeDistanceInformation,
    SystemAcpiAuditInformation, // q: SYSTEM_ACPI_AUDIT_INFORMATION // HaliQuerySystemInformation -> HalpAuditQueryResults, info class 26
    SystemBasicPerformanceInformation, // q: SYSTEM_BASIC_PERFORMANCE_INFORMATION // name:wow64:whNtQuerySystemInformation_SystemBasicPerformanceInformation
    SystemQueryPerformanceCounterInformation, // q: SYSTEM_QUERY_PERFORMANCE_COUNTER_INFORMATION // since WIN7 SP1
    SystemSessionBigPoolInformation, // q: SYSTEM_SESSION_POOLTAG_INFORMATION // since WIN8
    SystemBootGraphicsInformation, // q; s: SYSTEM_BOOT_GRAPHICS_INFORMATION (kernel-mode only)
    SystemScrubPhysicalMemoryInformation, // q; s: MEMORY_SCRUB_INFORMATION
    SystemBadPageInformation,
    SystemProcessorProfileControlArea, // q; s: SYSTEM_PROCESSOR_PROFILE_CONTROL_AREA
    SystemCombinePhysicalMemoryInformation, // s: MEMORY_COMBINE_INFORMATION, MEMORY_COMBINE_INFORMATION_EX, MEMORY_COMBINE_INFORMATION_EX2 // 130
    SystemEntropyInterruptTimingCallback,
    SystemConsoleInformation, // q: SYSTEM_CONSOLE_INFORMATION
    SystemPlatformBinaryInformation, // q: SYSTEM_PLATFORM_BINARY_INFORMATION
    SystemThrottleNotificationInformation,
    SystemHypervisorProcessorCountInformation, // q: SYSTEM_HYPERVISOR_PROCESSOR_COUNT_INFORMATION
    SystemDeviceDataInformation, // q: SYSTEM_DEVICE_DATA_INFORMATION
    SystemDeviceDataEnumerationInformation,
    SystemMemoryTopologyInformation, // q: SYSTEM_MEMORY_TOPOLOGY_INFORMATION
    SystemMemoryChannelInformation, // q: SYSTEM_MEMORY_CHANNEL_INFORMATION
    SystemBootLogoInformation, // q: SYSTEM_BOOT_LOGO_INFORMATION // 140
    SystemProcessorPerformanceInformationEx, // q: SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION_EX // since WINBLUE
    SystemSpare0,
    SystemSecureBootPolicyInformation, // q: SYSTEM_SECUREBOOT_POLICY_INFORMATION
    SystemPageFileInformationEx, // q: SYSTEM_PAGEFILE_INFORMATION_EX
    SystemSecureBootInformation, // q: SYSTEM_SECUREBOOT_INFORMATION
    SystemEntropyInterruptTimingRawInformation,
    SystemPortableWorkspaceEfiLauncherInformation, // q: SYSTEM_PORTABLE_WORKSPACE_EFI_LAUNCHER_INFORMATION
    SystemFullProcessInformation, // q: SYSTEM_PROCESS_INFORMATION with SYSTEM_PROCESS_INFORMATION_EXTENSION (requires admin)
    SystemKernelDebuggerInformationEx, // q: SYSTEM_KERNEL_DEBUGGER_INFORMATION_EX
    SystemBootMetadataInformation, // 150
    SystemSoftRebootInformation, // q: ULONG
    SystemElamCertificateInformation, // s: SYSTEM_ELAM_CERTIFICATE_INFORMATION
    SystemOfflineDumpConfigInformation,
    SystemProcessorFeaturesInformation, // q: SYSTEM_PROCESSOR_FEATURES_INFORMATION
    SystemRegistryReconciliationInformation,
    SystemEdidInformation,
    SystemManufacturingInformation, // q: SYSTEM_MANUFACTURING_INFORMATION // since THRESHOLD
    SystemEnergyEstimationConfigInformation, // q: SYSTEM_ENERGY_ESTIMATION_CONFIG_INFORMATION
    SystemHypervisorDetailInformation, // q: SYSTEM_HYPERVISOR_DETAIL_INFORMATION
    SystemProcessorCycleStatsInformation, // q: SYSTEM_PROCESSOR_CYCLE_STATS_INFORMATION // 160
    SystemVmGenerationCountInformation,
    SystemTrustedPlatformModuleInformation, // q: SYSTEM_TPM_INFORMATION
    SystemKernelDebuggerFlags, // SYSTEM_KERNEL_DEBUGGER_FLAGS
    SystemCodeIntegrityPolicyInformation, // q: SYSTEM_CODEINTEGRITYPOLICY_INFORMATION
    SystemIsolatedUserModeInformation, // q: SYSTEM_ISOLATED_USER_MODE_INFORMATION
    SystemHardwareSecurityTestInterfaceResultsInformation,
    SystemSingleModuleInformation, // q: SYSTEM_SINGLE_MODULE_INFORMATION
    SystemAllowedCpuSetsInformation,
    SystemVsmProtectionInformation, // q: SYSTEM_VSM_PROTECTION_INFORMATION (previously SystemDmaProtectionInformation)
    SystemInterruptCpuSetsInformation, // q: SYSTEM_INTERRUPT_CPU_SET_INFORMATION // 170
    SystemSecureBootPolicyFullInformation, // q: SYSTEM_SECUREBOOT_POLICY_FULL_INFORMATION
    SystemCodeIntegrityPolicyFullInformation,
    SystemAffinitizedInterruptProcessorInformation,
    SystemRootSiloInformation, // q: SYSTEM_ROOT_SILO_INFORMATION
    SystemCpuSetInformation, // q: SYSTEM_CPU_SET_INFORMATION // since THRESHOLD2
    SystemCpuSetTagInformation, // q: SYSTEM_CPU_SET_TAG_INFORMATION
    SystemWin32WerStartCallout,
    SystemSecureKernelProfileInformation, // q: SYSTEM_SECURE_KERNEL_HYPERGUARD_PROFILE_INFORMATION
    SystemCodeIntegrityPlatformManifestInformation, // q: SYSTEM_SECUREBOOT_PLATFORM_MANIFEST_INFORMATION // since REDSTONE
    SystemInterruptSteeringInformation, // 180
    SystemSupportedProcessorArchitectures,
    SystemMemoryUsageInformation, // q: SYSTEM_MEMORY_USAGE_INFORMATION
    SystemCodeIntegrityCertificateInformation, // q: SYSTEM_CODEINTEGRITY_CERTIFICATE_INFORMATION
    SystemPhysicalMemoryInformation, // q: SYSTEM_PHYSICAL_MEMORY_INFORMATION // since REDSTONE2
    SystemControlFlowTransition,
    SystemKernelDebuggingAllowed, // s: ULONG
    SystemActivityModerationExeState, // SYSTEM_ACTIVITY_MODERATION_EXE_STATE
    SystemActivityModerationUserSettings, // SYSTEM_ACTIVITY_MODERATION_USER_SETTINGS
    SystemCodeIntegrityPoliciesFullInformation,
    SystemCodeIntegrityUnlockInformation, // SYSTEM_CODEINTEGRITY_UNLOCK_INFORMATION // 190
    SystemIntegrityQuotaInformation,
    SystemFlushInformation, // q: SYSTEM_FLUSH_INFORMATION
    SystemProcessorIdleMaskInformation, // q: ULONG_PTR // since REDSTONE3
    SystemSecureDumpEncryptionInformation,
    SystemWriteConstraintInformation, // SYSTEM_WRITE_CONSTRAINT_INFORMATION
    SystemKernelVaShadowInformation, // SYSTEM_KERNEL_VA_SHADOW_INFORMATION
    SystemHypervisorSharedPageInformation, // SYSTEM_HYPERVISOR_SHARED_PAGE_INFORMATION // since REDSTONE4
    SystemFirmwareBootPerformanceInformation,
    SystemCodeIntegrityVerificationInformation, // SYSTEM_CODEINTEGRITYVERIFICATION_INFORMATION
    SystemFirmwarePartitionInformation, // SYSTEM_FIRMWARE_PARTITION_INFORMATION // 200
    SystemSpeculationControlInformation, // SYSTEM_SPECULATION_CONTROL_INFORMATION // (CVE-2017-5715) REDSTONE3 and above.
    SystemDmaGuardPolicyInformation, // SYSTEM_DMA_GUARD_POLICY_INFORMATION
    SystemEnclaveLaunchControlInformation, // SYSTEM_ENCLAVE_LAUNCH_CONTROL_INFORMATION
    SystemWorkloadAllowedCpuSetsInformation, // SYSTEM_WORKLOAD_ALLOWED_CPU_SET_INFORMATION // since REDSTONE5
    SystemCodeIntegrityUnlockModeInformation,
    SystemLeapSecondInformation, // SYSTEM_LEAP_SECOND_INFORMATION
    SystemFlags2Information, // q: SYSTEM_FLAGS_INFORMATION
    SystemSecurityModelInformation, // SYSTEM_SECURITY_MODEL_INFORMATION // since 19H1
    SystemCodeIntegritySyntheticCacheInformation,
    MaxSystemInfoClass
} SYSTEM_INFORMATION_CLASS;