win32.c File Reference

#include <ntoskrnl.h>
#include <winerror.h>
#include <debug.h>

Include dependency graph for win32.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
NTSTATUS NTAPI	PsConvertToGuiThread (VOID)
VOID NTAPI	PsEstablishWin32Callouts (IN PWIN32_CALLOUTS_FPNS CalloutData)

Variables
PKWIN32_PROCESS_CALLOUT	PspW32ProcessCallout = NULL
PKWIN32_THREAD_CALLOUT	PspW32ThreadCallout = NULL
PGDI_BATCHFLUSH_ROUTINE	KeGdiFlushUserBatch = NULL
PKWIN32_SESSION_CALLOUT	ExpWindowStationObjectParse
PKWIN32_SESSION_CALLOUT	ExpWindowStationObjectDelete
PKWIN32_SESSION_CALLOUT	ExpWindowStationObjectOkToClose
PKWIN32_SESSION_CALLOUT	ExpDesktopObjectOkToClose
PKWIN32_SESSION_CALLOUT	ExpDesktopObjectDelete
PKWIN32_SESSION_CALLOUT	ExpDesktopObjectOpen
PKWIN32_SESSION_CALLOUT	ExpDesktopObjectClose
PKWIN32_POWEREVENT_CALLOUT	PopEventCallout

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file win32.c.

Function Documentation

PsConvertToGuiThread()

NTSTATUS NTAPI PsConvertToGuiThread

(

VOID

)

Definition at line 34 of file win32.c.

{
    ULONG_PTR NewStack;
    PVOID OldStack;
    PETHREAD Thread = PsGetCurrentThread();
    PEPROCESS Process = PsGetCurrentProcess();
    NTSTATUS Status;
    PAGED_CODE();
 
    /* Validate the previous mode */
    if (KeGetPreviousMode() == KernelMode) return STATUS_INVALID_PARAMETER;
 
    /* If no win32k, crashes later */
    ASSERT(PspW32ProcessCallout != NULL);
 
    /* Make sure win32k is here */
    if (!PspW32ProcessCallout) return STATUS_ACCESS_DENIED;
 
    /* Make sure it's not already win32 */
    if (Thread->Tcb.ServiceTable != KeServiceDescriptorTable)
    {
        /* We're already a win32 thread */
        return STATUS_ALREADY_WIN32;
    }
 
    /* Check if we don't already have a kernel-mode stack */
    if (!Thread->Tcb.LargeStack)
    {
        /* We don't create one */
        NewStack = (ULONG_PTR)MmCreateKernelStack(TRUE, 0);
        if (!NewStack)
        {
            /* Panic in user-mode */
            NtCurrentTeb()->LastErrorValue = ERROR_NOT_ENOUGH_MEMORY;
            return STATUS_NO_MEMORY;
        }
 
        /* We're about to switch stacks. Enter a guarded region */
        KeEnterGuardedRegion();
 
        /* Switch stacks */
        OldStack = KeSwitchKernelStack((PVOID)NewStack,
                                       (PVOID)(NewStack - KERNEL_STACK_SIZE));
 
        /* Leave the guarded region */
        KeLeaveGuardedRegion();
 
        /* Delete the old stack */
        MmDeleteKernelStack(OldStack, FALSE);
    }
 
    /* Always do the process callout! */
    Status = PspW32ProcessCallout(Process, TRUE);
    if (!NT_SUCCESS(Status)) return Status;
 
    /* Set the new service table */
    Thread->Tcb.ServiceTable = KeServiceDescriptorTableShadow;
    ASSERT(Thread->Tcb.Win32Thread == 0);
 
    /* Tell Win32k about our thread */
    Status = PspW32ThreadCallout(Thread, PsW32ThreadCalloutInitialize);
    if (!NT_SUCCESS(Status))
    {
        /* Revert our table */
        Thread->Tcb.ServiceTable = KeServiceDescriptorTable;
    }
 
    /* Return status */
    return Status;
}

PsEstablishWin32Callouts()

VOID NTAPI PsEstablishWin32Callouts

(

IN PWIN32_CALLOUTS_FPNS

CalloutData

)

Definition at line 112 of file win32.c.

{
    /* Setup the callback pointers */
    PspW32ProcessCallout = CalloutData->ProcessCallout;
    PspW32ThreadCallout = CalloutData->ThreadCallout;
    ExpWindowStationObjectParse = CalloutData->WindowStationParseProcedure;
    ExpWindowStationObjectDelete = CalloutData->WindowStationDeleteProcedure;
    ExpWindowStationObjectOkToClose = CalloutData->WindowStationOkToCloseProcedure;
    ExpDesktopObjectOkToClose = CalloutData->DesktopOkToCloseProcedure;
    ExpDesktopObjectDelete = CalloutData->DesktopDeleteProcedure;
    ExpDesktopObjectOpen = CalloutData->DesktopOpenProcedure;
    ExpDesktopObjectClose = CalloutData->DesktopCloseProcedure;
    PopEventCallout = CalloutData->PowerEventCallout;
    KeGdiFlushUserBatch = CalloutData->BatchFlushRoutine;
}

Referenced by DriverEntry().

Variable Documentation

ExpDesktopObjectClose

PKWIN32_SESSION_CALLOUT ExpDesktopObjectClose

extern

Definition at line 46 of file win32k.c.

Referenced by ExpDesktopClose(), and PsEstablishWin32Callouts().

ExpDesktopObjectDelete

PKWIN32_SESSION_CALLOUT ExpDesktopObjectDelete

extern

Definition at line 44 of file win32k.c.

Referenced by ExpDesktopDelete(), and PsEstablishWin32Callouts().

ExpDesktopObjectOkToClose

PKWIN32_SESSION_CALLOUT ExpDesktopObjectOkToClose

extern

Definition at line 43 of file win32k.c.

Referenced by ExpDesktopOkToClose(), and PsEstablishWin32Callouts().

ExpDesktopObjectOpen

PKWIN32_SESSION_CALLOUT ExpDesktopObjectOpen

extern

Definition at line 45 of file win32k.c.

Referenced by ExpDesktopOpen(), and PsEstablishWin32Callouts().

ExpWindowStationObjectDelete

PKWIN32_SESSION_CALLOUT ExpWindowStationObjectDelete

extern

Definition at line 41 of file win32k.c.

Referenced by ExpWinStaObjectDelete(), and PsEstablishWin32Callouts().

ExpWindowStationObjectOkToClose

PKWIN32_SESSION_CALLOUT ExpWindowStationObjectOkToClose

extern

Definition at line 42 of file win32k.c.

Referenced by ExpWindowStationOkToClose(), and PsEstablishWin32Callouts().

ExpWindowStationObjectParse

PKWIN32_SESSION_CALLOUT ExpWindowStationObjectParse

extern

Definition at line 40 of file win32k.c.

Referenced by ExpWinStaObjectParse(), and PsEstablishWin32Callouts().

KeGdiFlushUserBatch

PGDI_BATCHFLUSH_ROUTINE KeGdiFlushUserBatch = NULL

Definition at line 20 of file win32.c.

Referenced by KeUserModeCallback(), KiSystemCallHandler(), KiSystemServiceHandler(), and PsEstablishWin32Callouts().

PopEventCallout

PKWIN32_POWEREVENT_CALLOUT PopEventCallout

extern

Definition at line 32 of file events.c.

Referenced by PoNotifySystemTimeSet(), and PsEstablishWin32Callouts().

PspW32ProcessCallout

PKWIN32_PROCESS_CALLOUT PspW32ProcessCallout = NULL

Definition at line 18 of file win32.c.

Referenced by PsConvertToGuiThread(), PsEstablishWin32Callouts(), and PspExitThread().

PspW32ThreadCallout

PKWIN32_THREAD_CALLOUT PspW32ThreadCallout = NULL

Definition at line 19 of file win32.c.

Referenced by PsConvertToGuiThread(), PsEstablishWin32Callouts(), and PspExitThread().