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uvm_prot.h revision 1.2 
      1 /*	$NetBSD: uvm_prot.h,v 1.2 2001/05/25 04:06:17 chs 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. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  *	@(#)vm_prot.h	8.1 (Berkeley) 6/11/93
     39  *
     40  *
     41  * Copyright (c) 1987, 1990 Carnegie-Mellon University.
     42  * All rights reserved.
     43  *
     44  * Authors: Avadis Tevanian, Jr., Michael Wayne Young
     45  *
     46  * Permission to use, copy, modify and distribute this software and
     47  * its documentation is hereby granted, provided that both the copyright
     48  * notice and this permission notice appear in all copies of the
     49  * software, derivative works or modified versions, and any portions
     50  * thereof, and that both notices appear in supporting documentation.
     51  *
     52  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     53  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     54  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     55  *
     56  * Carnegie Mellon requests users of this software to return to
     57  *
     58  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     59  *  School of Computer Science
     60  *  Carnegie Mellon University
     61  *  Pittsburgh PA 15213-3890
     62  *
     63  * any improvements or extensions that they make and grant Carnegie the
     64  * rights to redistribute these changes.
     65  */
     66 
     67 /*
     68  *	Virtual memory protection definitions.
     69  */
     70 
     71 #ifndef	_UVM_PROT_
     72 #define	_UVM_PROT_
     73 
     74 /*
     75  *	Types defined:
     76  *
     77  *	vm_prot_t		VM protection values.
     78  */
     79 
     80 typedef int		vm_prot_t;
     81 
     82 /*
     83  *	Protection values, defined as bits within the vm_prot_t type
     84  */
     85 
     86 #define	VM_PROT_NONE	((vm_prot_t) 0x00)
     87 
     88 #define VM_PROT_READ	((vm_prot_t) 0x01)	/* read permission */
     89 #define VM_PROT_WRITE	((vm_prot_t) 0x02)	/* write permission */
     90 #define VM_PROT_EXECUTE	((vm_prot_t) 0x04)	/* execute permission */
     91 
     92 /*
     93  *	The default protection for newly-created virtual memory
     94  */
     95 
     96 #define VM_PROT_DEFAULT	(VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
     97 
     98 /*
     99  *	The maximum privileges possible, for parameter checking.
    100  */
    101 
    102 #define VM_PROT_ALL	(VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
    103 
    104 #endif /* _UVM_PROT_ */
    105