.ref-8c8a5b54e79564c14fc7a2823a21a8f048449bcf/usr/src/sys/vm/vm_prot.h

/*
 * Copyright (c) 1985, Avadis Tevanian, Jr., Michael Wayne Young
 * Copyright (c) 1987 Carnegie-Mellon University
 * Copyright (c) 1991 Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * The Mach Operating System project at Carnegie-Mellon University.
 *
 * The CMU software License Agreement specifies the terms and conditions
 * for use and redistribution.
 *
 *      @(#)vm_prot.h   7.1 (Berkeley) %G%
 */

/*
 *      Virtual memory protection definitions.
 */

#ifndef _VM_PROT_
#define _VM_PROT_

/*
 *      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|VM_PROT_EXECUTE)

/*
 *      The maximum privileges possible, for parameter checking.
 */

#define VM_PROT_ALL     (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)

#endif  _VM_PROT_