From 6da719aa66c53cbd71a066491cc09bc352c1768a Mon Sep 17 00:00:00 2001
From: Timo Kreuzer <timo.kreuzer@reactos.org>
Date: Sun, 20 Feb 2011 11:27:07 +0000
Subject: [PATCH] [NTOSKRNL] Halfplement (win32 only) ProcessWow64Information
 case in NtQueryInformationProcess. Patch by Samuel Serapion.

See issue #5916 for more details.

svn path=/trunk/; revision=50831
---
 reactos/ntoskrnl/ps/query.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/reactos/ntoskrnl/ps/query.c b/reactos/ntoskrnl/ps/query.c
index 342c818945e..6b6c2681186 100644
--- a/reactos/ntoskrnl/ps/query.c
+++ b/reactos/ntoskrnl/ps/query.c
@@ -469,11 +469,26 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
                                                NULL);
             if (!NT_SUCCESS(Status)) break;
 
-            DPRINT1("Not implemented: ProcessWow64Information\n");
+            /* Protect write in SEH */
+            _SEH2_TRY
+            {
+#ifdef _WIN64
+                DPRINT1("Not implemented: ProcessWow64Information\n");
+                Status = STATUS_NOT_IMPLEMENTED;
+#else
+                /* Wow64 not present */
+                *(PULONG_PTR)ProcessInformation = 0;
+#endif
+            }
+            _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+            {
+                /* Get the exception code */
+                Status = _SEH2_GetExceptionCode();
+            }
+            _SEH2_END;
 
             /* Dereference the process */
             ObDereferenceObject(Process);
-            Status = STATUS_NOT_IMPLEMENTED;
             break;
 
         /* Virtual Memory Statistics */
-- 
2.17.1