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- Do not call KeAttachProcess/keDetachProcess if the current process is the necessary process.

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svn path=/trunk/; revision=5638
This commit is contained in:
Hartmut Birr 2003-08-18 10:18:14 +00:00
parent e7eff667e5
commit 8ab6fed82c
4 changed files with 46 additions and 14 deletions
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10
reactos/subsys/win32k/eng/device.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: device.c,v 1.9 2003/07/11 15:59:37 royce Exp $
/* $Id: device.c,v 1.10 2003/08/18 10:18:14 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -50,13 +50,18 @@ EngDeviceIoControl(HANDLE hDevice,
KEVENT Event;
IO_STATUS_BLOCK Iosb;
PFILE_OBJECT FileObject;
PEPROCESS CurrentProcess;
DPRINT("EngDeviceIoControl() called\n");
KeInitializeEvent(&Event, SynchronizationEvent, FALSE);
CurrentProcess = PsGetCurrentProcess();
if (CurrentProcess != W32kDeviceProcess)
{
/* Switch to process context in which hDevice is valid */
KeAttachProcess(W32kDeviceProcess);
}
Status = ObReferenceObjectByHandle(hDevice,
FILE_READ_DATA | FILE_WRITE_DATA,
@ -64,7 +69,10 @@ EngDeviceIoControl(HANDLE hDevice,
KernelMode,
(PVOID *)&FileObject,
NULL);
if (CurrentProcess != W32kDeviceProcess)
{
KeDetachProcess();
}
if (!NT_SUCCESS(Status))
{

10
reactos/subsys/win32k/misc/driver.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: driver.c,v 1.26 2003/08/13 20:24:05 chorns Exp $
/* $Id: driver.c,v 1.27 2003/08/18 10:18:14 hbirr Exp $
*
* GDI Driver support routines
* (mostly swiped from Wine)
@ -244,9 +244,14 @@ HANDLE DRIVER_FindMPDriver(LPCWSTR Name)
IO_STATUS_BLOCK Iosb;
HANDLE DisplayHandle;
NTSTATUS Status;
PEPROCESS CurrentProcess;
CurrentProcess = PsGetCurrentProcess();
if (CurrentProcess != W32kDeviceProcess)
{
/* Switch to process context in which handle is to be valid */
KeAttachProcess(W32kDeviceProcess);
}
RtlInitUnicodeStringFromLiteral(&DeviceName, L"\\??\\DISPLAY1");
InitializeObjectAttributes(&ObjectAttributes,
@ -261,7 +266,10 @@ HANDLE DRIVER_FindMPDriver(LPCWSTR Name)
0,
FILE_SYNCHRONOUS_IO_ALERT);
if (CurrentProcess != W32kDeviceProcess)
{
KeDetachProcess();
}
if (!NT_SUCCESS(Status))
{

10
reactos/subsys/win32k/objects/dc.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: dc.c,v 1.70 2003/08/17 17:32:58 royce Exp $
/* $Id: dc.c,v 1.71 2003/08/18 10:18:14 hbirr Exp $
*
* DC.C - Device context functions
*
@ -511,6 +511,7 @@ W32kDeleteDC(HDC DCHandle)
{
if (!DRIVER_UnreferenceDriver (DCToDelete->DriverName))
{
PEPROCESS CurrentProcess;
DPRINT( "No more references to driver, reseting display\n" );
DCToDelete->DriverFunctions.AssertMode( DCToDelete->PDev, FALSE );
CHECKPOINT;
@ -518,9 +519,16 @@ W32kDeleteDC(HDC DCHandle)
CHECKPOINT;
DCToDelete->DriverFunctions.DisablePDev(DCToDelete->PDev);
CurrentProcess = PsGetCurrentProcess();
if (CurrentProcess != W32kDeviceProcess)
{
KeAttachProcess(W32kDeviceProcess);
}
ZwClose(PrimarySurface.DisplayDevice);
if (CurrentProcess != W32kDeviceProcess)
{
KeDetachProcess();
}
PrimarySurfaceCreated = FALSE;
}

10
reactos/subsys/win32k/objects/gdiobj.c
View file

@ -19,7 +19,7 @@
/*
* GDIOBJ.C - GDI object manipulation routines
*
* $Id: gdiobj.c,v 1.35 2003/08/17 17:32:58 royce Exp $
* $Id: gdiobj.c,v 1.36 2003/08/18 10:18:14 hbirr Exp $
*
*/
@ -534,9 +534,14 @@ CleanupForProcess (struct _EPROCESS *Process, INT Pid)
DWORD i;
PGDI_HANDLE_ENTRY handleEntry;
PGDIOBJHDR objectHeader;
PEPROCESS CurrentProcess;
//NTSTATUS Status;
CurrentProcess = PsGetCurrentProcess();
if (CurrentProcess != Process)
{
KeAttachProcess(Process);
}
for(i = 1; i < GDI_HANDLE_NUMBER; i++)
{
@ -550,7 +555,10 @@ CleanupForProcess (struct _EPROCESS *Process, INT Pid)
}
}
if (CurrentProcess != Process)
{
KeDetachProcess();
}
return TRUE;
}