[ros-diffs] [tkreuzer] 58108: [NTOSKRNL] Implement protection changing in NtAllocateVirtualMemory. Fixes "Assertion 'ChangeProtection == FALSE' failed"

Author: tkreuzer
Date: Fri Jan  4 01:06:51 2013
New Revision: 58108

URL: http://svn.reactos.org/svn/reactos?rev=58108&view=rev
Log:
[NTOSKRNL]
Implement protection changing in NtAllocateVirtualMemory. 
Fixes "Assertion 'ChangeProtection == FALSE' failed"

Modified:
    trunk/reactos/ntoskrnl/mm/ARM3/virtual.c

Modified: trunk/reactos/ntoskrnl/mm/ARM3/virtual.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/virtual.c…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/virtual.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/virtual.c [iso-8859-1] Fri Jan  4 01:06:51 2013
@@ -4308,7 +4308,6 @@
             // There's a change in protection, remember this for later, but do
             // not yet handle it.
             //
-            DPRINT1("Protection change to: 0x%lx not implemented\n", Protect);
             ChangeProtection = TRUE;
         }
 
@@ -4317,11 +4316,6 @@
         //
         PointerPte++;
     }
-
-    //
-    // This path is not yet handled
-    //
-    ASSERT(ChangeProtection == FALSE);
 
     //
     // Release the working set lock, unlock the address space, and detach from
@@ -4332,6 +4326,26 @@
     Status = STATUS_SUCCESS;
 FailPath:
     MmUnlockAddressSpace(AddressSpace);
+
+    //
+    // Check if we need to update the protection
+    //
+    if (ChangeProtection)
+    {
+        PVOID ProtectBaseAddress = (PVOID)StartingAddress;
+        SIZE_T ProtectSize = PRegionSize;
+        ULONG OldProtection;
+
+        //
+        // Change the protection of the region
+        //
+        MiProtectVirtualMemory(Process,
+                               &ProtectBaseAddress,
+                               &ProtectSize,
+                               Protect,
+                               &OldProtection);
+    }
+
 FailPathNoLock:
     if (Attached) KeUnstackDetachProcess(&ApcState);
     if (ProcessHandle != NtCurrentProcess()) ObDereferenceObject(Process);