[rharabien] 51126: [NTOSKRNL] Revert r51108. ProbeForRead doesn't check if memory is readable. Improve comments and replace trick raising exception with call to ExRaiseAccessViolation. [WIN32K] Rem...

Author: rharabien
Date: Wed Mar 23 15:49:44 2011
New Revision: 51126

URL: http://svn.reactos.org/svn/reactos?rev=51126&view=rev
Log:
[NTOSKRNL]
Revert r51108. ProbeForRead doesn't check if memory is readable.
Improve comments and replace trick raising exception with call to ExRaiseAccessViolation.

[WIN32K]
Remove ASSERTs in IntSetSysColors: this function is only called in NtUserSetSysColors in
SEH block. It shouldn't crash for NULL pointers.

Modified:
    trunk/reactos/ntoskrnl/ex/exintrin.c
    trunk/reactos/subsystems/win32/win32k/objects/stockobj.c

Modified: trunk/reactos/ntoskrnl/ex/exintrin.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ex/exintrin.c?rev…
==============================================================================
--- trunk/reactos/ntoskrnl/ex/exintrin.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/ex/exintrin.c [iso-8859-1] Wed Mar 23 15:49:44 2011
@@ -104,7 +104,6 @@
              IN ULONG Alignment)
 {
 	ULONG_PTR Last, Current = (ULONG_PTR)Address;
-	CHAR Temp;
     PAGED_CODE();
 
     /* Only probe if we have a valid length */
@@ -132,16 +131,7 @@
             ExRaiseAccessViolation();
         }
 
-        /* Round down to the last page */
-        Last = PAGE_ROUND_DOWN(Last) + PAGE_SIZE;
-        do
-        {
-            /* Attempt a read */
-            Temp = *(volatile CHAR*)Current;
-
-            /* Go to the next address */
-            Current = PAGE_ROUND_DOWN(Current) + PAGE_SIZE;
-        } while (Current != Last);
+        /* ProbeForRead doesn't check if memory pages are readable! */
     }
 }
 

Modified: trunk/reactos/subsystems/win32/win32k/objects/stockobj.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/ob…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/objects/stockobj.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/objects/stockobj.c [iso-8859-1] Wed Mar 23
15:49:44 2011
@@ -221,9 +221,6 @@
 {
     UINT i;
 
-    ASSERT(Elements);
-    ASSERT(Colors);
-
     for (i = 0; i < nColors; i++)
     {
         if ((UINT)(*Elements) < NUM_SYSCOLORS)