home *** CD-ROM | disk | FTP | other *** search
- /*
- * 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.
- */
- /*
- * HISTORY
- * $Log: vm_prot.h,v $
- * Revision 2.6 93/01/14 17:49:10 danner
- * Standardized include symbol name.
- * [92/06/10 pds]
- *
- * Revision 2.5 92/03/10 16:27:15 jsb
- * Add no change protection value for memory_object_lock_request.
- * [David L. Black 92/02/22 17:03:43 dlb@osf.org]
- *
- * Revision 2.4 91/05/14 17:03:00 mrt
- * Correcting copyright
- *
- * Revision 2.3 91/02/05 17:37:38 mrt
- * Changed to new Mach copyright
- * [91/02/01 17:22:39 mrt]
- *
- * Revision 2.2 90/01/22 23:05:57 af
- * Removed execute permission from default protection.
- * On the only machine that cares for execute permission (mips)
- * this is an expensive liability: it requires keeping
- * Icache consistent memory that never contains code.
- * [89/12/15 af]
- *
- * Revision 2.1 89/08/03 16:06:47 rwd
- * Created.
- *
- * Revision 2.3 89/02/25 18:42:29 gm0w
- * Changes for cleanup.
- *
- * 6-Jun-85 Avadis Tevanian (avie) at Carnegie-Mellon University
- * Created.
- *
- */
- /*
- * File: mach/vm_prot.h
- * Author: Avadis Tevanian, Jr., Michael Wayne Young
- *
- * Virtual memory protection definitions.
- *
- */
-
- #ifndef _MACH_VM_PROT_H_
- #define _MACH_VM_PROT_H_
-
- /*
- * Types defined:
- *
- * vm_prot_t VM protection values.
- */
-
- typedef int vm_prot_t;
-
- /*
- * Protection values, defined as bits within the vm_prot_t type
- */
-
- #define VM_PROT_NONE ((vm_prot_t) 0x00)
-
- #define VM_PROT_READ ((vm_prot_t) 0x01) /* read permission */
- #define VM_PROT_WRITE ((vm_prot_t) 0x02) /* write permission */
- #define VM_PROT_EXECUTE ((vm_prot_t) 0x04) /* execute permission */
-
- /*
- * The default protection for newly-created virtual memory
- */
-
- #define VM_PROT_DEFAULT (VM_PROT_READ|VM_PROT_WRITE)
-
- /*
- * The maximum privileges possible, for parameter checking.
- */
-
- #define VM_PROT_ALL (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
-
- /*
- * An invalid protection value.
- * Used only by memory_object_lock_request to indicate no change
- * to page locks. Using -1 here is a bad idea because it
- * looks like VM_PROT_ALL and then some.
- */
- #define VM_PROT_NO_CHANGE ((vm_prot_t) 0x08)
-
- #endif /* _MACH_VM_PROT_H_ */
-