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- /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
- /*
- * @OSF_COPYRIGHT@
- */
- /*
- * HISTORY
- *
- * Revision 1.1.1.1 1998/09/22 21:05:31 wsanchez
- * Import of Mac OS X kernel (~semeria)
- *
- * Revision 1.1.1.1 1998/03/07 02:25:46 wsanchez
- * Import of OSF Mach kernel (~mburg)
- *
- * Revision 1.3.8.1 1994/09/23 02:44:31 ezf
- * change marker to not FREE
- * [1994/09/22 21:43:46 ezf]
- *
- * Revision 1.3.2.2 1993/06/09 02:44:23 gm
- * Added to OSF/1 R1.3 from NMK15.0.
- * [1993/06/02 21:18:51 jeffc]
- *
- * Revision 1.3 1993/04/19 16:40:48 devrcs
- * make endif tags ansi compliant/include files
- * [1993/02/20 21:45:25 david]
- *
- * Revision 1.2 1992/12/07 21:29:28 robert
- * integrate any changes below for 14.0 (branch from 13.16 base)
- *
- * Joseph Barrera (jsb) at Carnegie-Mellon University 05-Aug-92
- * Added VM_PROT_WANTS_COPY to solve copy-call race condition.
- * [1992/12/06 20:25:47 robert]
- *
- * Revision 1.1 1992/09/30 02:32:28 robert
- * Initial revision
- *
- * $EndLog$
- */
- /* CMU_HIST */
- /*
- * Revision 2.4.3.1 92/03/03 16:22:41 jeffreyh
- * [David L. Black 92/02/22 17:03:43 dlb@osf.org]
- * Add no change protection value for memory_object_lock_request.
- *
- * 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.
- *
- */
- /* CMU_ENDHIST */
- /*
- * 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_prot.h
- * Author: Avadis Tevanian, Jr., Michael Wayne Young
- *
- * Virtual memory protection definitions.
- *
- */
-
- #ifndef VM_PROT_H_
- #define 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)
-
- /*
- * When a caller finds that he cannot obtain write permission on a
- * mapped entry, the following flag can be used. The entry will
- * be made "needs copy" effectively copying the object (using COW),
- * and write permission will be added to the maximum protections
- * for the associated entry.
- */
- #define VM_PROT_COPY ((vm_prot_t) 0x10)
-
-
- /*
- * Another invalid protection value.
- * Used only by memory_object_data_request upon an object
- * which has specified a copy_call copy strategy. It is used
- * when the kernel wants a page belonging to a copy of the
- * object, and is only asking the object as a result of
- * following a shadow chain. This solves the race between pages
- * being pushed up by the memory manager and the kernel
- * walking down the shadow chain.
- */
- #define VM_PROT_WANTS_COPY ((vm_prot_t) 0x10)
-
- #endif /* VM_PROT_H_ */
-