From 21b04efae881d1a96d7704d079a1ee89fe19f781 Mon Sep 17 00:00:00 2001
From: Thomas Faber <thomas.faber@reactos.org>
Date: Sat, 17 Oct 2015 18:37:49 +0000
Subject: [PATCH] [NTOS:OB] - Create kernel handles if requested by the caller
 in ObDuplicateObject CORE-10207

svn path=/trunk/; revision=69571
---
 reactos/ntoskrnl/ob/obhandle.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/reactos/ntoskrnl/ob/obhandle.c b/reactos/ntoskrnl/ob/obhandle.c
index 94d96220f24..e97c69d5616 100644
--- a/reactos/ntoskrnl/ob/obhandle.c
+++ b/reactos/ntoskrnl/ob/obhandle.c
@@ -2150,6 +2150,8 @@ ObDuplicateObject(IN PEPROCESS SourceProcess,
     PHANDLE_TABLE HandleTable;
     OBJECT_HANDLE_INFORMATION HandleInformation;
     ULONG AuditMask;
+    BOOLEAN KernelHandle = FALSE;
+
     PAGED_CODE();
     OBTRACE(OB_HANDLE_DEBUG,
             "%s - Duplicating handle: %p for %p into %p\n",
@@ -2222,6 +2224,14 @@ ObDuplicateObject(IN PEPROCESS SourceProcess,
         return Status;
     }
 
+    /* Create a kernel handle if asked, but only in the system process */
+    if (PreviousMode == KernelMode &&
+        HandleAttributes & OBJ_KERNEL_HANDLE &&
+        TargetProcess == PsInitialSystemProcess)
+    {
+        KernelHandle = TRUE;
+    }
+
     /* Get the target handle table */
     HandleTable = ObReferenceProcessHandleTable(TargetProcess);
     if (!HandleTable)
@@ -2376,6 +2386,12 @@ ObDuplicateObject(IN PEPROCESS SourceProcess,
         Status = STATUS_INSUFFICIENT_RESOURCES;
     }
 
+    /* Mark it as a kernel handle if requested */
+    if (KernelHandle)
+    {
+        NewHandle = ObMarkHandleAsKernelHandle(NewHandle);
+    }
+
     /* Return the handle */
     if (TargetHandle) *TargetHandle = NewHandle;
 
-- 
2.17.1