[tkreuzer] 39054: Mm: Fix page protection flags checks.

Author: tkreuzer
Date: Fri Jan 23 18:54:02 2009
New Revision: 39054

URL: http://svn.reactos.org/svn/reactos?rev=39054&view=rev
Log:
Mm: Fix page protection flags checks.

Modified:
    trunk/reactos/ntoskrnl/include/internal/mm.h
    trunk/reactos/ntoskrnl/mm/anonmem.c
    trunk/reactos/ntoskrnl/mm/section.c

Modified: trunk/reactos/ntoskrnl/include/internal/mm.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/include/internal/…
==============================================================================
--- trunk/reactos/ntoskrnl/include/internal/mm.h [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/include/internal/mm.h [iso-8859-1] Fri Jan 23 18:54:02 2009
@@ -139,6 +139,16 @@
     PAGE_GUARD | \
     PAGE_NOACCESS | \
     PAGE_NOCACHE)
+
+#define PAGE_FLAGS_VALID_FOR_SECTION \
+    (PAGE_READONLY | \
+     PAGE_READWRITE | \
+     PAGE_WRITECOPY | \
+     PAGE_EXECUTE | \
+     PAGE_EXECUTE_READ | \
+     PAGE_EXECUTE_READWRITE | \
+     PAGE_EXECUTE_WRITECOPY | \
+     PAGE_NOACCESS)
 
 #define PAGE_IS_READABLE                    \
     (PAGE_READONLY | \

Modified: trunk/reactos/ntoskrnl/mm/anonmem.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/anonmem.c?rev=…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/anonmem.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/anonmem.c [iso-8859-1] Fri Jan 23 18:54:02 2009
@@ -569,7 +569,7 @@
           Protect);
 
    /* Check for valid protection flags */
-   if (!(Protect & PAGE_FLAGS_VALID_FROM_USER_MODE))
+   if (!Protect || Protect & ~PAGE_FLAGS_VALID_FROM_USER_MODE)
    {
       DPRINT1("Invalid page protection\n");
       return STATUS_INVALID_PAGE_PROTECTION;

Modified: trunk/reactos/ntoskrnl/mm/section.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/section.c?rev=…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/section.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/section.c [iso-8859-1] Fri Jan 23 18:54:02 2009
@@ -4538,10 +4538,7 @@
 
    ASSERT(Process);
 
-   if (!(Protect & (PAGE_READONLY | PAGE_READWRITE | 
-                   PAGE_WRITECOPY | PAGE_EXECUTE |
-                   PAGE_EXECUTE_READ | PAGE_EXECUTE_READWRITE |
-                   PAGE_EXECUTE_WRITECOPY | PAGE_NOACCESS)))
+   if (!Protect || Protect & ~PAGE_FLAGS_VALID_FOR_SECTION)
    {
       return STATUS_INVALID_PAGE_PROTECTION;
    }