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diff --git a/source3/ubiqx/ubi_null.h b/source3/ubiqx/ubi_null.h
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+++ b/source3/ubiqx/ubi_null.h
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+#ifndef UBI_NULL_H
+#define UBI_NULL_H
+/* ========================================================================== **
+ *                                 ubi_null.h
+ *
+ *  Copyright (C) 1998 by Christopher R. Hertel
+ *
+ *  Email: crh@ubiqx.mn.org
+ * -------------------------------------------------------------------------- **
+ *  This header provides declarations and data types used internally by the
+ *  ubiqx modules.  It is not intended to be included elsewhere.
+ * -------------------------------------------------------------------------- **
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * -------------------------------------------------------------------------- **
+ *
+ *  You don't need this in your code.  It is used by the ubi_*.c files.
+ *  At present, its only purpose is to provide a definition of NULL.
+ *  Read on...
+ *
+ * -------------------------------------------------------------------------- **
+ *
+ * Log: ubi_null.h,v 
+ * Revision 0.0  1998/05/20 04:38:38  crh
+ * Initial Revision.
+ *
+ * ========================================================================== **
+ */
+
+/* -------------------------------------------------------------------------- **
+ *  Looking for NULL.
+ *
+ *  The core ubiqx modules (all those beginning with 'ubi_') rely on very
+ *  little from the outside world.  One exception is that we need a
+ *  defintion for NULL.  This has turned out to be something of a problem,
+ *  as NULL is NOT always defined in the same place on different systems.
+ *
+ *  Ahh... standards...
+ *
+ *  K&R 2nd Ed. (pg 102) says NULL should be in <stdio.h>.  I've heard
+ *  that it is in <locale.h> on some systems.  I've also seen it in
+ *  <stddef.h> and <stdlib.h>.  In most cases it's defined in multiple
+ *  places.  We'll try several of them.  If none of these work on your
+ *  system, please send E'mail and let me know where you get your NULL!
+ *
+ *  The purpose of the mess below, then, is simply to supply a definition
+ *  of NULL to the ubi_*.c files.  Keep in mind that C compilers (all
+ *  those of which I'm aware) will allow you to define a constant on the
+ *  command line, eg.: -DNULL=((void *)0).
+ *
+ *  Also, 99.9% of the time, NULL is zero.  I have been informed of at
+ *  least one exception.
+ *
+ *  crh; may 1998
+ */
+
+#ifndef NULL
+#include <stddef.h>
+#endif
+
+#ifndef NULL
+#include <stdlib.h>
+#endif
+
+#ifndef NULL
+#include <stdio.h>
+#endif
+
+#ifndef NULL
+#include <locale.h>
+#endif
+
+#ifndef NULL
+#define NULL ((void *)0)
+#endif
+
+/* ================================ The End ================================= */
+#endif /* UBI_NULL_H */
+