1/*	$NetBSD: uvm_prot.h,v 1.4 2005/12/11 12:25:29 christos Exp $	*/
  2
  3/*
  4 * Copyright (c) 1991, 1993
  5 *	The Regents of the University of California.  All rights reserved.
  6 *
  7 * This code is derived from software contributed to Berkeley by
  8 * The Mach Operating System project at Carnegie-Mellon University.
  9 *
 10 * Redistribution and use in source and binary forms, with or without
 11 * modification, are permitted provided that the following conditions
 12 * are met:
 13 * 1. Redistributions of source code must retain the above copyright
 14 *    notice, this list of conditions and the following disclaimer.
 15 * 2. Redistributions in binary form must reproduce the above copyright
 16 *    notice, this list of conditions and the following disclaimer in the
 17 *    documentation and/or other materials provided with the distribution.
 18 * 3. Neither the name of the University nor the names of its contributors
 19 *    may be used to endorse or promote products derived from this software
 20 *    without specific prior written permission.
 21 *
 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 32 * SUCH DAMAGE.
 33 *
 34 *	@(#)vm_prot.h	8.1 (Berkeley) 6/11/93
 35 *
 36 *
 37 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
 38 * All rights reserved.
 39 *
 40 * Authors: Avadis Tevanian, Jr., Michael Wayne Young
 41 *
 42 * Permission to use, copy, modify and distribute this software and
 43 * its documentation is hereby granted, provided that both the copyright
 44 * notice and this permission notice appear in all copies of the
 45 * software, derivative works or modified versions, and any portions
 46 * thereof, and that both notices appear in supporting documentation.
 47 *
 48 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 49 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 50 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 51 *
 52 * Carnegie Mellon requests users of this software to return to
 53 *
 54 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 55 *  School of Computer Science
 56 *  Carnegie Mellon University
 57 *  Pittsburgh PA 15213-3890
 58 *
 59 * any improvements or extensions that they make and grant Carnegie the
 60 * rights to redistribute these changes.
 61 */
 62
 63/*
 64 *	Virtual memory protection definitions.
 65 */
 66
 67#ifndef	_UVM_PROT_
 68#define	_UVM_PROT_
 69
 70/*
 71 *	Types defined:
 72 *
 73 *	vm_prot_t		VM protection values.
 74 */
 75
 76typedef int		vm_prot_t;
 77
 78/*
 79 *	Protection values, defined as bits within the vm_prot_t type
 80 */
 81
 82#define	VM_PROT_NONE	((vm_prot_t) 0x00)
 83
 84#define VM_PROT_READ	((vm_prot_t) 0x01)	/* read permission */
 85#define VM_PROT_WRITE	((vm_prot_t) 0x02)	/* write permission */
 86#define VM_PROT_EXECUTE	((vm_prot_t) 0x04)	/* execute permission */
 87
 88/*
 89 *	The default protection for newly-created virtual memory
 90 */
 91
 92#define VM_PROT_DEFAULT	(VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
 93
 94/*
 95 *	The maximum privileges possible, for parameter checking.
 96 */
 97
 98#define VM_PROT_ALL	(VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
 99
100#endif /* _UVM_PROT_ */