[jimtabor] 29546: Dc_Attr with DCE: - Fixed problem with dcattr read and write access in user mode. - Dcattr data only flows from Kernel to User ATM. - Cleaned up code. - Enable GetDCObject for testing. - Tested with Qemu both Linux and XP, and real hardware.

Author: jimtabor
Date: Sat Oct 13 08:15:37 2007
New Revision: 29546

URL: http://svn.reactos.org/svn/reactos?rev=29546&view=rev
Log:
Dc_Attr with DCE:
- Fixed problem with dcattr read and write access in user mode.
- Dcattr data only flows from Kernel to User ATM.
- Cleaned up code.
- Enable GetDCObject for testing.
- Tested with Qemu both Linux and XP, and real hardware.

Modified:
    trunk/reactos/dll/win32/gdi32/objects/dc.c
    trunk/reactos/subsystems/win32/win32k/include/dc.h
    trunk/reactos/subsystems/win32/win32k/ntuser/windc.c
    trunk/reactos/subsystems/win32/win32k/objects/dc.c

Modified: trunk/reactos/dll/win32/gdi32/objects/dc.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/gdi32/objects/dc....
==============================================================================
--- trunk/reactos/dll/win32/gdi32/objects/dc.c (original)
+++ trunk/reactos/dll/win32/gdi32/objects/dc.c Sat Oct 13 08:15:37 2007
@@ -320,7 +320,6 @@
 STDCALL
 GetDCObject( HDC hDC, INT iType)
 {
-#if 0
  if((iType == GDI_OBJECT_TYPE_BRUSH) ||
     (iType == GDI_OBJECT_TYPE_EXTPEN)||
     (iType == GDI_OBJECT_TYPE_PEN)   ||
@@ -348,7 +347,6 @@
    }   
    return hGO;
  }
-#endif
  return NtGdiGetDCObject( hDC, iType );
 }

Modified: trunk/reactos/subsystems/win32/win32k/include/dc.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/inc...
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/include/dc.h (original)
+++ trunk/reactos/subsystems/win32/win32k/include/dc.h Sat Oct 13 08:15:37 2007
@@ -150,8 +150,8 @@
 VOID FASTCALL DC_InitDC(HDC  DCToInit);
 HDC  FASTCALL DC_FindOpenDC(PUNICODE_STRING  Driver);
 VOID FASTCALL DC_FreeDC(HDC);
-VOID FASTCALL DC_AllocateDcAttr(HDC, PEPROCESS);
-VOID FASTCALL DC_FreeDcAttr(HDC, PEPROCESS);
+VOID FASTCALL DC_AllocateDcAttr(HDC);
+VOID FASTCALL DC_FreeDcAttr(HDC);
 BOOL INTERNAL_CALL DC_Cleanup(PVOID ObjectBody);
 HDC  FASTCALL DC_GetNextDC (PDC pDC);
 VOID FASTCALL DC_SetNextDC (PDC pDC, HDC hNextDC);

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/windc.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/ntu...
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/windc.c (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/windc.c Sat Oct 13 08:15:37 2007
@@ -153,6 +153,8 @@
      }
     else
     {
+       DPRINT("FREE DCATTR!!!! NOT DCE_WINDOW_DC!!!!! hDC-> %x\n", pDce->hDC);
+       DC_FreeDcAttr(pDce->hDC);         // Free the dcattr!
        DC_SetOwnership(pDce->hDC, NULL); // This hDC is inaccessible!
     }

@@ -267,6 +269,10 @@
          dce->DCXFlags |= DCX_DCEEMPTY;
        }
      }
+     DPRINT("Exit!!!!! DCX_CACHE!!!!!!   hDC-> %x \n", dce->hDC);
+     DC_FreeDcAttr(dce->hDC);         // Free the dcattr.
+     DC_SetOwnership(dce->hDC, NULL); // Set hDC inaccessible mode.
+     dce->pProcess = NULL;            // Reset ownership.
    }
    return 1;
 }
@@ -543,6 +549,15 @@
       DceUpdateVisRgn(Dce, Window, Flags);
    }

+   if (Dce->DCXFlags & DCX_CACHE)
+   {
+      DPRINT("ENTER!!!!!! DCX_CACHE!!!!!!   hDC-> %x\n", Dce->hDC);
+      // Need to set ownership so Sync dcattr will work.
+      DC_SetOwnership( Dce->hDC, PsGetCurrentProcess());
+      DC_AllocateDcAttr( Dce->hDC );         // Allocate new dcattr
+      DCU_SynchDcAttrtoUser( Dce->hDC, -1);  // Copy data from dc to dcattr
+      Dce->pProcess = PsGetCurrentProcess(); // Set the temp owning process
+   }
    return(Dce->hDC);
 }

Modified: trunk/reactos/subsystems/win32/win32k/objects/dc.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/obj...
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/objects/dc.c (original)
+++ trunk/reactos/subsystems/win32/win32k/objects/dc.c Sat Oct 13 08:15:37 2007
@@ -2399,7 +2399,7 @@
     return  NULL;
   }

-  DC_AllocateDcAttr(hDC, NULL);
+  DC_AllocateDcAttr(hDC);

NewDC = DC_LockDc(hDC);
   /* FIXME - Handle NewDC == NULL! */
@@ -2482,14 +2482,12 @@

VOID
 FASTCALL
-DC_AllocateDcAttr(HDC hDC, PEPROCESS Owner)
-{
-//#if 0
+DC_AllocateDcAttr(HDC hDC)
+{
   PVOID NewMem = NULL;
   HANDLE Pid = NtCurrentProcess();
   ULONG MemSize = sizeof(DC_ATTR); //PAGE_SIZE it will allocate that size

-  if(Owner) Pid = PsGetProcessId(Owner);
   NTSTATUS Status = ZwAllocateVirtualMemory(Pid,
                                         &NewMem,
                                               0,
@@ -2519,19 +2517,17 @@
      pDC->pDc_Attr = NewMem; // Store pointer
   }
   DC_UnlockDc(pDC);
-//#endif  
 }

VOID
 FASTCALL
-DC_FreeDcAttr(HDC  DCToFree,  PEPROCESS Owner)
+DC_FreeDcAttr(HDC  DCToFree )
 {
   HANDLE Pid = NtCurrentProcess();
   PDC pDC = DC_LockDc(DCToFree);
   if (pDC->pDc_Attr == &pDC->Dc_Attr) return; // Internal DC object!
   pDC->pDc_Attr = NULL;
   DC_UnlockDc(pDC);
-  if(Owner) Pid = PsGetProcessId(Owner);

KeEnterCriticalRegion();
   {
@@ -2557,9 +2553,8 @@
 VOID FASTCALL
 DC_FreeDC(HDC  DCToFree)
 {
-//#if 0
-  DC_FreeDcAttr(DCToFree, NULL);
-//#endif
+  DC_FreeDcAttr(DCToFree);
+
   if (!GDIOBJ_FreeObj(GdiHandleTable, DCToFree, GDI_OBJECT_TYPE_DC))
   {
     DPRINT("DC_FreeDC failed\n");