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diff --git a/include/mach/vm_inherit.h b/include/mach/vm_inherit.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	File:	mach/vm_inherit.h
+ *	Author:	Avadis Tevanian, Jr., Michael Wayne Young
+ *
+ *	Virtual memory map inheritance definitions.
+ *
+ */
+
+#ifndef	_MACH_VM_INHERIT_H_
+#define	_MACH_VM_INHERIT_H_
+
+/*
+ *	Types defined:
+ *
+ *	vm_inherit_t	inheritance codes.
+ */
+
+typedef int		vm_inherit_t;	/* might want to change this */
+
+/*
+ *	Enumeration of valid values for vm_inherit_t.
+ */
+
+#define	VM_INHERIT_SHARE	((vm_inherit_t) 0)	/* share with child */
+#define	VM_INHERIT_COPY		((vm_inherit_t) 1)	/* copy into child */
+#define VM_INHERIT_NONE		((vm_inherit_t) 2)	/* absent from child */
+
+#define VM_INHERIT_DEFAULT	VM_INHERIT_COPY
+
+#endif	/* _MACH_VM_INHERIT_H_ */