# NTV02_CriticalProcess
NTAPI系统关键进程视频源代码，用于演示未公开的API
 - RtlSetProcessIsCritical
 - RtlSetThreadIsCritical
 - NtQueryInformationProcess

## 关于RtlSetProcessIsCritical

### 函数原型
```c++
VOID RtlSetProcessIsCritical(BOOLEAN NewValue, PBOOLEAN OldValue, BOOLEAN IsWinlogon);
```

## 关于RtlSetThreadIsCritical

### 函数原型
```c++
VOID RtlSetThreadIsCritical(BOOLEAN NewValue, PBOOLEAN OldValue, BOOLEAN IsWinlogon);
```

## 关于NtQueryInformationProcess

### 函数原型
```c++
NTSTATUS NtQueryInformationProcess(IN HANDLE ProcessHandle, IN PROCESSINFOCLASS ProcessInformationClass, OUT PVOID ProcessInformation, IN ULONG ProcessInformationLength, OUT PULONG ReturnLength);
```

### 未导出类型
```c++
enum PROCESSINFOCLASS
{
	ProcessBasicInformation = 0x00,
	ProcessQuotaLimits = 0x01,
	ProcessIoCounters = 0x02,
	ProcessVmCounters = 0x03,
	ProcessTimes = 0x04,
	ProcessBasePriority = 0x05,
	ProcessRaisePriority = 0x06,
	ProcessDebugPort = 0x07,
	ProcessExceptionPort = 0x08,
	ProcessAccessToken = 0x09,
	ProcessLdtInformation = 0x0A,
	ProcessLdtSize = 0x0B,
	ProcessDefaultHardErrorMode = 0x0C,
	ProcessIoPortHandlers = 0x0D,
	ProcessPooledUsageAndLimits = 0x0E,
	ProcessWorkingSetWatch = 0x0F,
	ProcessUserModeIOPL = 0x10,
	ProcessEnableAlignmentFaultFixup = 0x11,
	ProcessPriorityClass = 0x12,
	ProcessWx86Information = 0x13,
	ProcessHandleCount = 0x14,
	ProcessAffinityMask = 0x15,
	ProcessPriorityBoost = 0x16,
	ProcessDeviceMap = 0x17,
	ProcessSessionInformation = 0x18,
	ProcessForegroundInformation = 0x19,
	ProcessWow64Information = 0x1A,
	ProcessImageFileName = 0x1B,
	ProcessLUIDDeviceMapsEnabled = 0x1C,
	ProcessBreakOnTermination = 0x1D,
	ProcessDebugObjectHandle = 0x1E,
	ProcessDebugFlags = 0x1F,
	ProcessHandleTracing = 0x20,
	ProcessIoPriority = 0x21,
	ProcessExecuteFlags = 0x22,
	ProcessResourceManagement = 0x23,
	ProcessCookie = 0x24,
	ProcessImageInformation = 0x25,
	ProcessCycleTime = 0x26,
	ProcessPagePriority = 0x27,
	ProcessInstrumentationCallback = 0x28,
	ProcessThreadStackAllocation = 0x29,
	ProcessWorkingSetWatchEx = 0x2A,
	ProcessImageFileNameWin32 = 0x2B,
	ProcessImageFileMapping = 0x2C,
	ProcessAffinityUpdateMode = 0x2D,
	ProcessMemoryAllocationMode = 0x2E,
	ProcessGroupInformation = 0x2F,
	ProcessTokenVirtualizationEnabled = 0x30,
	ProcessConsoleHostProcess = 0x31,
	ProcessWindowInformation = 0x32,
	ProcessHandleInformation = 0x33,
	ProcessMitigationPolicy = 0x34,
	ProcessDynamicFunctionTableInformation = 0x35,
	ProcessHandleCheckingMode = 0x36,
	ProcessKeepAliveCount = 0x37,
	ProcessRevokeFileHandles = 0x38,
	ProcessWorkingSetControl = 0x39,
	ProcessHandleTable = 0x3A,
	ProcessCheckStackExtentsMode = 0x3B,
	ProcessCommandLineInformation = 0x3C,
	ProcessProtectionInformation = 0x3D,
	ProcessMemoryExhaustion = 0x3E,
	ProcessFaultInformation = 0x3F,
	ProcessTelemetryIdInformation = 0x40,
	ProcessCommitReleaseInformation = 0x41,
	ProcessDefaultCpuSetsInformation = 0x42,
	ProcessAllowedCpuSetsInformation = 0x43,
	ProcessSubsystemProcess = 0x44,
	ProcessJobMemoryInformation = 0x45,
	ProcessInPrivate = 0x46,
	ProcessRaiseUMExceptionOnInvalidHandleClose = 0x47,
	ProcessIumChallengeResponse = 0x48,
	ProcessChildProcessInformation = 0x49,
	ProcessHighGraphicsPriorityInformation = 0x4A,
	ProcessSubsystemInformation = 0x4B,
	ProcessEnergyValues = 0x4C,
	ProcessActivityThrottleState = 0x4D,
	ProcessActivityThrottlePolicy = 0x4E,
	ProcessWin32kSyscallFilterInformation = 0x4F,
	ProcessDisableSystemAllowedCpuSets = 0x50,
	ProcessWakeInformation = 0x51,
	ProcessEnergyTrackingState = 0x52,
	ProcessManageWritesToExecutableMemory = 0x53,
	ProcessCaptureTrustletLiveDump = 0x54,
	ProcessTelemetryCoverage = 0x55,
	ProcessEnclaveInformation = 0x56,
	ProcessEnableReadWriteVmLogging = 0x57,
	ProcessUptimeInformation = 0x58,
	ProcessImageSection = 0x59,
	ProcessDebugAuthInformation = 0x5A,
	ProcessSystemResourceManagement = 0x5B,
	ProcessSequenceNumber = 0x5C,
	ProcessLoaderDetour = 0x5D,
	ProcessSecurityDomainInformation = 0x5E,
	ProcessCombineSecurityDomainsInformation = 0x5F,
	ProcessEnableLogging = 0x60,
	ProcessLeapSecondInformation = 0x61,
	ProcessFiberShadowStackAllocation = 0x62,
	ProcessFreeFiberShadowStackAllocation = 0x63,
	MaxProcessInfoClass = 0x64
};
```

### 特殊说明
```NtQueryInformationProcess```函数及其未导出类型也可在```winternl.h```中找到。