csr.h File Reference

#include "csrmsg.h"

Include dependency graph for csr.h:

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Go to the source code of this file.

Functions
NTSTATUS NTAPI	CsrClientConnectToServer (IN PWSTR ObjectDirectory, IN ULONG ServerId, IN PVOID ConnectionInfo, IN OUT PULONG ConnectionInfoSize, OUT PBOOLEAN ServerToServerCall)
NTSTATUS NTAPI	CsrClientCallServer (IN OUT PCSR_API_MESSAGE ApiMessage, IN OUT PCSR_CAPTURE_BUFFER CaptureBuffer OPTIONAL, IN CSR_API_NUMBER ApiNumber, IN ULONG DataLength)
PCSR_CAPTURE_BUFFER NTAPI	CsrAllocateCaptureBuffer (IN ULONG ArgumentCount, IN ULONG BufferSize)
ULONG NTAPI	CsrAllocateMessagePointer (IN OUT PCSR_CAPTURE_BUFFER CaptureBuffer, IN ULONG MessageLength, OUT PVOID *CapturedData)
VOID NTAPI	CsrCaptureMessageBuffer (IN OUT PCSR_CAPTURE_BUFFER CaptureBuffer, IN PVOID MessageBuffer OPTIONAL, IN ULONG MessageLength, OUT PVOID *CapturedData)
VOID NTAPI	CsrFreeCaptureBuffer (IN PCSR_CAPTURE_BUFFER CaptureBuffer)
VOID NTAPI	CsrCaptureMessageString (IN OUT PCSR_CAPTURE_BUFFER CaptureBuffer, IN PCSTR String OPTIONAL, IN ULONG StringLength, IN ULONG MaximumLength, OUT PSTRING CapturedString)
NTSTATUS NTAPI	CsrCaptureMessageMultiUnicodeStringsInPlace (OUT PCSR_CAPTURE_BUFFER *CaptureBuffer, IN ULONG StringsCount, IN PUNICODE_STRING *MessageStrings)
PLARGE_INTEGER NTAPI	CsrCaptureTimeout (IN ULONG Milliseconds, OUT PLARGE_INTEGER Timeout)
VOID NTAPI	CsrProbeForRead (IN PVOID Address, IN ULONG Length, IN ULONG Alignment)
VOID NTAPI	CsrProbeForWrite (IN PVOID Address, IN ULONG Length, IN ULONG Alignment)
NTSTATUS NTAPI	CsrIdentifyAlertableThread (VOID)
HANDLE NTAPI	CsrGetProcessId (VOID)
NTSTATUS NTAPI	CsrNewThread (VOID)
NTSTATUS NTAPI	CsrSetPriorityClass (IN HANDLE Process, IN OUT PULONG PriorityClass)

Function Documentation

CsrAllocateCaptureBuffer()

PCSR_CAPTURE_BUFFER NTAPI CsrAllocateCaptureBuffer	(	IN ULONG	ArgumentCount,
		IN ULONG	BufferSize
	)

Definition at line 90 of file capture.c.

{
    PCSR_CAPTURE_BUFFER CaptureBuffer;

    /* Validate size */
    if (BufferSize >= MAXLONG) return NULL;

    /* Add the size of the header and for each offset to the pointers */
    BufferSize += FIELD_OFFSET(CSR_CAPTURE_BUFFER, PointerOffsetsArray) +
                    (ArgumentCount * sizeof(ULONG_PTR));

    /* Align it to a 4-byte boundary */
    BufferSize = (BufferSize + 3) & ~3;

    /* Add the size of the alignment padding for each argument */
    BufferSize += ArgumentCount * 3;

    /* Allocate memory from the port heap */
    CaptureBuffer = RtlAllocateHeap(CsrPortHeap, HEAP_ZERO_MEMORY, BufferSize);
    if (CaptureBuffer == NULL) return NULL;

    /* Initialize the header */
    CaptureBuffer->Size = BufferSize;
    CaptureBuffer->PointerCount = 0;

    /* Initialize all the offsets */
    RtlZeroMemory(CaptureBuffer->PointerOffsetsArray,
                  ArgumentCount * sizeof(ULONG_PTR));

    /* Point to the start of the free buffer */
    CaptureBuffer->BufferEnd = (PVOID)((ULONG_PTR)CaptureBuffer->PointerOffsetsArray +
                                       ArgumentCount * sizeof(ULONG_PTR));

    /* Return the address of the buffer */
    return CaptureBuffer;
}

Referenced by BaseCheckVDM(), CreateConsoleScreenBuffer(), CsrCaptureMessageMultiUnicodeStringsInPlace(), CsrClientConnectToServer(), DefineDosDeviceW(), GetConsoleFontInfo(), GetConsoleProcessList(), GetNextVDMCommand(), GetVDMCurrentDirectories(), IntAddConsoleAlias(), IntAllocConsole(), IntAttachConsole(), IntExpungeConsoleCommandHistory(), IntGetConsoleAlias(), IntGetConsoleAliases(), IntGetConsoleAliasesLength(), IntGetConsoleAliasExes(), IntGetConsoleCommandHistory(), IntGetConsoleCommandHistoryLength(), IntGetConsoleInput(), IntGetConsoleTitle(), IntReadConsole(), IntReadConsoleOutput(), IntReadConsoleOutputCode(), IntSetConsoleNumberOfCommands(), IntSetConsoleTitle(), IntWriteConsole(), IntWriteConsoleInput(), IntWriteConsoleOutput(), IntWriteConsoleOutputCode(), RegisterConsoleVDM(), and SetVDMCurrentDirectories().

CsrAllocateMessagePointer()

ULONG NTAPI CsrAllocateMessagePointer	(	IN OUT PCSR_CAPTURE_BUFFER	CaptureBuffer,
		IN ULONG	MessageLength,
		OUT PVOID *	CapturedData
	)

Definition at line 133 of file capture.c.

{
    if (MessageLength == 0)
    {
        *CapturedData = NULL;
        CapturedData = NULL;
    }
    else
    {
        /* Set the capture data at our current available buffer */
        *CapturedData = CaptureBuffer->BufferEnd;

        /* Validate the size */
        if (MessageLength >= MAXLONG) return 0;

        /* Align it to a 4-byte boundary */
        MessageLength = (MessageLength + 3) & ~3;

        /* Move our available buffer beyond this space */
        CaptureBuffer->BufferEnd = (PVOID)((ULONG_PTR)CaptureBuffer->BufferEnd + MessageLength);
    }

    /* Write down this pointer in the array and increase the count */
    CaptureBuffer->PointerOffsetsArray[CaptureBuffer->PointerCount++] = (ULONG_PTR)CapturedData;

    /* Return the aligned length */
    return MessageLength;
}

Referenced by CsrCaptureMessageBuffer(), CsrCaptureMessageString(), DefineDosDeviceW(), GetConsoleFontInfo(), GetConsoleProcessList(), GetNextVDMCommand(), GetVDMCurrentDirectories(), IntGetConsoleAlias(), IntGetConsoleAliases(), IntGetConsoleAliasExes(), IntGetConsoleCommandHistory(), IntGetConsoleInput(), IntGetConsoleTitle(), IntReadConsole(), IntReadConsoleOutput(), IntReadConsoleOutputCode(), and IntWriteConsoleOutput().

CsrCaptureMessageBuffer()

VOID NTAPI CsrCaptureMessageBuffer	(	IN OUT PCSR_CAPTURE_BUFFER	CaptureBuffer,
		IN PVOID MessageBuffer	OPTIONAL,
		IN ULONG	MessageLength,
		OUT PVOID *	CapturedData
	)

Definition at line 169 of file capture.c.

{
    /* Simply allocate a message pointer in the buffer */
    CsrAllocateMessagePointer(CaptureBuffer, MessageLength, CapturedData);

    /* Check if there was any data */
    if (!MessageBuffer || !MessageLength) return;

    /* Copy the data into the buffer */
    RtlMoveMemory(*CapturedData, MessageBuffer, MessageLength);
}

Referenced by BaseCheckVDM(), CreateConsoleScreenBuffer(), CsrClientConnectToServer(), IntAddConsoleAlias(), IntAllocConsole(), IntAttachConsole(), IntExpungeConsoleCommandHistory(), IntGetConsoleAlias(), IntGetConsoleAliases(), IntGetConsoleAliasesLength(), IntGetConsoleCommandHistory(), IntGetConsoleCommandHistoryLength(), IntSetConsoleNumberOfCommands(), IntSetConsoleTitle(), IntWriteConsole(), IntWriteConsoleInput(), IntWriteConsoleOutputCode(), RegisterConsoleVDM(), and SetVDMCurrentDirectories().

CsrCaptureMessageMultiUnicodeStringsInPlace()

NTSTATUS NTAPI CsrCaptureMessageMultiUnicodeStringsInPlace	(	OUT PCSR_CAPTURE_BUFFER *	CaptureBuffer,
		IN ULONG	StringsCount,
		IN PUNICODE_STRING *	MessageStrings
	)

Definition at line 271 of file capture.c.

{
    ULONG Count;

    if (!CaptureBuffer) return STATUS_INVALID_PARAMETER;

    /* Allocate a new capture buffer if we don't have one already */
    if (!*CaptureBuffer)
    {
        /* Compute the required size for the capture buffer */
        ULONG Size = 0;

        Count = 0;
        while (Count < StringsCount)
        {
            if (MessageStrings[Count])
                Size += MessageStrings[Count]->MaximumLength;

            ++Count;
        }

        /* Allocate the capture buffer */
        *CaptureBuffer = CsrAllocateCaptureBuffer(StringsCount, Size);
        if (!*CaptureBuffer) return STATUS_NO_MEMORY;
    }

    /* Now capture each UNICODE string */
    Count = 0;
    while (Count < StringsCount)
    {
        if (MessageStrings[Count])
            CsrCaptureMessageUnicodeStringInPlace(*CaptureBuffer, MessageStrings[Count]);

        ++Count;
    }

    return STATUS_SUCCESS;
}

CsrCaptureMessageString()

VOID NTAPI CsrCaptureMessageString	(	IN OUT PCSR_CAPTURE_BUFFER	CaptureBuffer,
		IN PCSTR String	OPTIONAL,
		IN ULONG	StringLength,
		IN ULONG	MaximumLength,
		OUT PSTRING	CapturedString
	)

Definition at line 200 of file capture.c.

{
    ASSERT(CapturedString != NULL);

    /*
     * If we don't have a string, initialize an empty one,
     * otherwise capture the given string.
     */
    if (!String)
    {
        CapturedString->Length = 0;
        CapturedString->MaximumLength = (USHORT)MaximumLength;

        /* Allocate a pointer for it */
        CsrAllocateMessagePointer(CaptureBuffer,
                                  MaximumLength,
                                  (PVOID*)&CapturedString->Buffer);
    }
    else
    {
        /* Cut-off the string length if needed */
        if (StringLength > MaximumLength)
            StringLength = MaximumLength;

        CapturedString->Length = (USHORT)StringLength;

        /* Allocate a buffer and get its size */
        CapturedString->MaximumLength =
            (USHORT)CsrAllocateMessagePointer(CaptureBuffer,
                                              MaximumLength,
                                              (PVOID*)&CapturedString->Buffer);

        /* If the string has data, copy it into the buffer */
        if (StringLength)
            RtlMoveMemory(CapturedString->Buffer, String, StringLength);
    }

    /* Null-terminate the string if we don't take up the whole space */
    if (CapturedString->Length < CapturedString->MaximumLength)
        CapturedString->Buffer[CapturedString->Length] = '\0';
}

Referenced by CsrCaptureMessageUnicodeStringInPlace().

CsrCaptureTimeout()

PLARGE_INTEGER NTAPI CsrCaptureTimeout	(	IN ULONG	Milliseconds,
		OUT PLARGE_INTEGER	Timeout
	)

Definition at line 317 of file capture.c.

{
    /* Validate the time */
    if (Milliseconds == -1) return NULL;

    /* Convert to relative ticks */
    Timeout->QuadPart = Milliseconds * -10000LL;
    return Timeout;
}

CsrClientCallServer()

NTSTATUS NTAPI CsrClientCallServer	(	IN OUT PCSR_API_MESSAGE	ApiMessage,
		IN OUT PCSR_CAPTURE_BUFFER CaptureBuffer	OPTIONAL,
		IN CSR_API_NUMBER	ApiNumber,
		IN ULONG	DataLength
	)

Definition at line 365 of file connect.c.

{
    NTSTATUS Status;
    ULONG PointerCount;
    PULONG_PTR OffsetPointer;

    /* Make sure the length is valid */
    if (DataLength > (MAXSHORT - sizeof(CSR_API_MESSAGE)))
    {
        DPRINT1("DataLength too big: %lu", DataLength);
        return STATUS_INVALID_PARAMETER;
    }

    /* Fill out the Port Message Header */
    ApiMessage->Header.u2.ZeroInit = 0;
    ApiMessage->Header.u1.s1.TotalLength = (CSHORT)DataLength +
        sizeof(CSR_API_MESSAGE) - sizeof(ApiMessage->Data); // FIELD_OFFSET(CSR_API_MESSAGE, Data) + DataLength;
    ApiMessage->Header.u1.s1.DataLength = (CSHORT)DataLength +
        FIELD_OFFSET(CSR_API_MESSAGE, Data) - sizeof(ApiMessage->Header); // ApiMessage->Header.u1.s1.TotalLength - sizeof(PORT_MESSAGE);

    /* Fill out the CSR Header */
    ApiMessage->ApiNumber = ApiNumber;
    ApiMessage->CsrCaptureData = NULL;

    DPRINT("API: %lx, u1.s1.DataLength: %x, u1.s1.TotalLength: %x\n",
           ApiNumber,
           ApiMessage->Header.u1.s1.DataLength,
           ApiMessage->Header.u1.s1.TotalLength);

    /* Check if we are already inside a CSR Server */
    if (!InsideCsrProcess)
    {
        /* Check if we got a Capture Buffer */
        if (CaptureBuffer)
        {
            /*
             * We have to convert from our local (client) view
             * to the remote (server) view.
             */
            ApiMessage->CsrCaptureData = (PCSR_CAPTURE_BUFFER)
                ((ULONG_PTR)CaptureBuffer + CsrPortMemoryDelta);

            /* Lock the buffer. */
            CaptureBuffer->BufferEnd = NULL;

            /*
             * Each client pointer inside the CSR message is converted into
             * a server pointer, and each pointer to these message pointers
             * is converted into an offset.
             */
            PointerCount  = CaptureBuffer->PointerCount;
            OffsetPointer = CaptureBuffer->PointerOffsetsArray;
            while (PointerCount--)
            {
                if (*OffsetPointer != 0)
                {
                    *(PULONG_PTR)*OffsetPointer += CsrPortMemoryDelta;
                    *OffsetPointer -= (ULONG_PTR)ApiMessage;
                }
                ++OffsetPointer;
            }
        }

        /* Send the LPC Message */
        Status = NtRequestWaitReplyPort(CsrApiPort,
                                        &ApiMessage->Header,
                                        &ApiMessage->Header);

        /* Check if we got a Capture Buffer */
        if (CaptureBuffer)
        {
            /*
             * We have to convert back from the remote (server) view
             * to our local (client) view.
             */
            ApiMessage->CsrCaptureData = (PCSR_CAPTURE_BUFFER)
                ((ULONG_PTR)ApiMessage->CsrCaptureData - CsrPortMemoryDelta);

            /*
             * Convert back the offsets into pointers to CSR message
             * pointers, and convert back these message server pointers
             * into client pointers.
             */
            PointerCount  = CaptureBuffer->PointerCount;
            OffsetPointer = CaptureBuffer->PointerOffsetsArray;
            while (PointerCount--)
            {
                if (*OffsetPointer != 0)
                {
                    *OffsetPointer += (ULONG_PTR)ApiMessage;
                    *(PULONG_PTR)*OffsetPointer -= CsrPortMemoryDelta;
                }
                ++OffsetPointer;
            }
        }

        /* Check for success */
        if (!NT_SUCCESS(Status))
        {
            /* We failed. Overwrite the return value with the failure. */
            DPRINT1("LPC Failed: %lx\n", Status);
            ApiMessage->Status = Status;
        }
    }
    else
    {
        /* This is a server-to-server call. Save our CID and do a direct call. */
        DPRINT("Next gen server-to-server call\n");

        /* We check this equality inside CsrValidateMessageBuffer */
        ApiMessage->Header.ClientId = NtCurrentTeb()->ClientId;

        Status = CsrServerApiRoutine(&ApiMessage->Header,
                                     &ApiMessage->Header);

        /* Check for success */
        if (!NT_SUCCESS(Status))
        {
            /* We failed. Overwrite the return value with the failure. */
            ApiMessage->Status = Status;
        }
    }

    /* Return the CSR Result */
    DPRINT("Got back: 0x%lx\n", ApiMessage->Status);
    return ApiMessage->Status;
}

CsrClientConnectToServer()

NTSTATUS NTAPI CsrClientConnectToServer	(	IN PWSTR	ObjectDirectory,
		IN ULONG	ServerId,
		IN PVOID	ConnectionInfo,
		IN OUT PULONG	ConnectionInfoSize,
		OUT PBOOLEAN	ServerToServerCall
	)

Definition at line 197 of file connect.c.

{
    NTSTATUS Status;
    PIMAGE_NT_HEADERS NtHeader;
    UNICODE_STRING CsrSrvName;
    HANDLE hCsrSrv;
    ANSI_STRING CsrServerRoutineName;
    CSR_API_MESSAGE ApiMessage;
    PCSR_CLIENT_CONNECT ClientConnect = &ApiMessage.Data.CsrClientConnect;
    PCSR_CAPTURE_BUFFER CaptureBuffer;

    DPRINT("CsrClientConnectToServer: %lx %p\n", ServerId, ConnectionInfo);

    /* Validate the Connection Info */
    if (ConnectionInfo && (!ConnectionInfoSize || !*ConnectionInfoSize))
    {
        DPRINT1("Connection info given, but no length\n");
        return STATUS_INVALID_PARAMETER;
    }

    /* Check if we're inside a CSR Process */
    if (InsideCsrProcess)
    {
        /* Tell the client that we're already inside CSR */
        if (ServerToServerCall) *ServerToServerCall = TRUE;
        return STATUS_SUCCESS;
    }

    /*
     * We might be in a CSR Process but not know it, if this is the first call.
     * So let's find out.
     */
    if (!(NtHeader = RtlImageNtHeader(NtCurrentPeb()->ImageBaseAddress)))
    {
        /* The image isn't valid */
        DPRINT1("Invalid image\n");
        return STATUS_INVALID_IMAGE_FORMAT;
    }
    InsideCsrProcess = (NtHeader->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_NATIVE);

    /* Now we can check if we are inside or not */
    if (InsideCsrProcess)
    {
        /* We're inside, so let's find csrsrv */
        DPRINT("Next-GEN CSRSS support\n");
        RtlInitUnicodeString(&CsrSrvName, L"csrsrv");
        Status = LdrGetDllHandle(NULL,
                                 NULL,
                                 &CsrSrvName,
                                 &hCsrSrv);

        /* Now get the Server to Server routine */
        RtlInitAnsiString(&CsrServerRoutineName, "CsrCallServerFromServer");
        Status = LdrGetProcedureAddress(hCsrSrv,
                                        &CsrServerRoutineName,
                                        0L,
                                        (PVOID*)&CsrServerApiRoutine);

        /* Use the local heap as port heap */
        CsrPortHeap = RtlGetProcessHeap();

        /* Tell the caller we're inside the server */
        if (ServerToServerCall) *ServerToServerCall = InsideCsrProcess;
        return STATUS_SUCCESS;
    }

    /* Now check if connection info is given */
    if (ConnectionInfo)
    {
        /* Well, we're definitely in a client now */
        InsideCsrProcess = FALSE;

        /* Do we have a connection to CSR yet? */
        if (!CsrApiPort)
        {
            /* No, set it up now */
            Status = CsrpConnectToServer(ObjectDirectory);
            if (!NT_SUCCESS(Status))
            {
                /* Failed */
                DPRINT1("Failure to connect to CSR\n");
                return Status;
            }
        }

        /* Setup the connect message header */
        ClientConnect->ServerId = ServerId;
        ClientConnect->ConnectionInfoSize = *ConnectionInfoSize;

        /* Setup a buffer for the connection info */
        CaptureBuffer = CsrAllocateCaptureBuffer(1, ClientConnect->ConnectionInfoSize);
        if (CaptureBuffer == NULL)
        {
            return STATUS_INSUFFICIENT_RESOURCES;
        }

        /* Capture the connection info data */
        CsrCaptureMessageBuffer(CaptureBuffer,
                                ConnectionInfo,
                                ClientConnect->ConnectionInfoSize,
                                &ClientConnect->ConnectionInfo);

        /* Return the allocated length */
        *ConnectionInfoSize = ClientConnect->ConnectionInfoSize;

        /* Call CSR */
        Status = CsrClientCallServer(&ApiMessage,
                                     CaptureBuffer,
                                     CSR_CREATE_API_NUMBER(CSRSRV_SERVERDLL_INDEX, CsrpClientConnect),
                                     sizeof(CSR_CLIENT_CONNECT));

        /* Copy the updated connection info data back into the user buffer */
        RtlMoveMemory(ConnectionInfo,
                      ClientConnect->ConnectionInfo,
                      *ConnectionInfoSize);

        /* Free the capture buffer */
        CsrFreeCaptureBuffer(CaptureBuffer);
    }
    else
    {
        /* No connection info, just return */
        Status = STATUS_SUCCESS;
    }

    /* Let the caller know if this was server to server */
    DPRINT("Status was: 0x%lx. Are we in server: 0x%x\n", Status, InsideCsrProcess);
    if (ServerToServerCall) *ServerToServerCall = InsideCsrProcess;

    return Status;
}

Referenced by ConnectConsole(), and DllMain().

CsrFreeCaptureBuffer()

VOID NTAPI CsrFreeCaptureBuffer

(

IN PCSR_CAPTURE_BUFFER

CaptureBuffer

)

Definition at line 189 of file capture.c.

{
    /* Free it from the heap */
    RtlFreeHeap(CsrPortHeap, 0, CaptureBuffer);
}

Referenced by BaseCheckVDM(), CreateConsoleScreenBuffer(), CreateProcessInternalW(), CsrClientConnectToServer(), DefineDosDeviceW(), GetConsoleFontInfo(), GetConsoleProcessList(), GetNextVDMCommand(), GetVDMCurrentDirectories(), IntAddConsoleAlias(), IntAllocConsole(), IntAttachConsole(), IntExpungeConsoleCommandHistory(), IntGetConsoleAlias(), IntGetConsoleAliases(), IntGetConsoleAliasesLength(), IntGetConsoleAliasExes(), IntGetConsoleCommandHistory(), IntGetConsoleCommandHistoryLength(), IntGetConsoleInput(), IntGetConsoleTitle(), IntReadConsole(), IntReadConsoleOutput(), IntReadConsoleOutputCode(), IntSetConsoleNumberOfCommands(), IntSetConsoleTitle(), IntWriteConsole(), IntWriteConsoleInput(), IntWriteConsoleOutput(), IntWriteConsoleOutputCode(), RegisterConsoleVDM(), and SetVDMCurrentDirectories().

CsrGetProcessId()

HANDLE NTAPI CsrGetProcessId

(

VOID

)

Definition at line 501 of file connect.c.

{
    return CsrProcessId;
}

Referenced by ProcessIdToHandle().

CsrIdentifyAlertableThread()

NTSTATUS NTAPI CsrIdentifyAlertableThread

(

VOID

)

Definition at line 68 of file api.c.

{
    NTSTATUS Status;
    CSR_API_MESSAGE ApiMessage;
    PCSR_IDENTIFY_ALTERTABLE_THREAD IdentifyAlertableThread;

    /* Set up the data for CSR */
    DbgBreakPoint();
    IdentifyAlertableThread = &ApiMessage.Data.IdentifyAlertableThread;
    IdentifyAlertableThread->Cid = NtCurrentTeb()->ClientId;

    /* Call it */
    Status = CsrClientCallServer(&ApiMessage,
                                 NULL,
                                 CSR_CREATE_API_NUMBER(CSRSRV_SERVERDLL_INDEX, CsrpIdentifyAlertable),
                                 sizeof(CSR_IDENTIFY_ALTERTABLE_THREAD));

    /* Return to caller */
    return Status;
}

CsrNewThread()

NTSTATUS NTAPI CsrNewThread

(

VOID

)

Definition at line 27 of file api.c.

{
    /* Register the termination port to CSR's */
    return NtRegisterThreadTerminatePort(CsrApiPort);
}

Referenced by __declspec(), and DllMain().

CsrProbeForRead()

VOID NTAPI CsrProbeForRead	(	IN PVOID	Address,
		IN ULONG	Length,
		IN ULONG	Alignment
	)

Definition at line 28 of file capture.c.

{
    volatile UCHAR *Pointer;
    UCHAR Data;

    /* Validate length */
    if (Length == 0) return;

    /* Validate alignment */
    if ((ULONG_PTR)Address & (Alignment - 1))
    {
        /* Raise exception if it doesn't match */
        RtlRaiseStatus(STATUS_DATATYPE_MISALIGNMENT);
    }

    /* Probe first byte */
    Pointer = Address;
    Data = *Pointer;

    /* Probe last byte */
    Pointer = (PUCHAR)Address + Length - 1;
    Data = *Pointer;
    (void)Data;
}

CsrProbeForWrite()

VOID NTAPI CsrProbeForWrite	(	IN PVOID	Address,
		IN ULONG	Length,
		IN ULONG	Alignment
	)

Definition at line 60 of file capture.c.

{
    volatile UCHAR *Pointer;

    /* Validate length */
    if (Length == 0) return;

    /* Validate alignment */
    if ((ULONG_PTR)Address & (Alignment - 1))
    {
        /* Raise exception if it doesn't match */
        RtlRaiseStatus(STATUS_DATATYPE_MISALIGNMENT);
    }

    /* Probe first byte */
    Pointer = Address;
    *Pointer = *Pointer;

    /* Probe last byte */
    Pointer = (PUCHAR)Address + Length - 1;
    *Pointer = *Pointer;
}

CsrSetPriorityClass()

NTSTATUS NTAPI CsrSetPriorityClass	(	IN HANDLE	Process,
		IN OUT PULONG	PriorityClass
	)