ntoskrnl.exe: Add stub for ExCreateCallback.

dlls/ntoskrnl.exe/ntoskrnl.c

@@ -1105,6 +1105,18 @@ PVOID WINAPI ExAllocatePoolWithQuotaTag( POOL_TYPE type, SIZE_T size, ULONG tag
 
 
 /***********************************************************************
+ *           ExCreateCallback   (NTOSKRNL.EXE.@)
+ */
+NTSTATUS WINAPI ExCreateCallback(PCALLBACK_OBJECT *obj, POBJECT_ATTRIBUTES attr,
+                                 BOOLEAN create, BOOLEAN allow_multiple)
+{
+    FIXME("(%p, %p, %u, %u): stub\n", obj, attr, create, allow_multiple);
+
+    return STATUS_NOT_IMPLEMENTED;
+}
+
+
+/***********************************************************************
  *           ExFreePool   (NTOSKRNL.EXE.@)
  */
 void WINAPI ExFreePool( void *ptr )

dlls/ntoskrnl.exe/ntoskrnl.exe.spec

@@ -122,7 +122,7 @@
 @ stdcall ExAllocatePoolWithTag(long long long)
 @ stub ExAllocatePoolWithTagPriority
 @ stub ExConvertExclusiveToSharedLite
-@ stub ExCreateCallback
+@ stdcall ExCreateCallback(ptr ptr long long)
 @ stub ExDeleteNPagedLookasideList
 @ stub ExDeletePagedLookasideList
 @ stub ExDeleteResourceLite

include/ddk/wdm.h

@@ -1106,6 +1106,15 @@ typedef enum  {
     IoModifyAccess
 } LOCK_OPERATION;
 
+typedef struct _CALLBACK_OBJECT
+{
+    ULONG Signature;
+    KSPIN_LOCK Lock;
+    LIST_ENTRY RegisteredCallbacks;
+    BOOLEAN AllowMultipleCallbacks;
+    UCHAR reserved[3];
+} CALLBACK_OBJECT, *PCALLBACK_OBJECT;
+
 NTSTATUS WINAPI ObCloseHandle(IN HANDLE handle);
 
 #ifdef NONAMELESSUNION