| 1 | /* |
| 2 | * Copyright (c) 1991, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * This code is derived from software contributed to Berkeley by |
| 6 | * The Mach Operating System project at Carnegie-Mellon University. |
| 7 | * |
| 8 | * %sccs.include.redist.c% |
| 9 | * |
| 10 | * @(#)vm_prot.h 8.1 (Berkeley) %G% |
| 11 | * |
| 12 | * |
| 13 | * Copyright (c) 1987, 1990 Carnegie-Mellon University. |
| 14 | * All rights reserved. |
| 15 | * |
| 16 | * Authors: Avadis Tevanian, Jr., Michael Wayne Young |
| 17 | * |
| 18 | * Permission to use, copy, modify and distribute this software and |
| 19 | * its documentation is hereby granted, provided that both the copyright |
| 20 | * notice and this permission notice appear in all copies of the |
| 21 | * software, derivative works or modified versions, and any portions |
| 22 | * thereof, and that both notices appear in supporting documentation. |
| 23 | * |
| 24 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| 25 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND |
| 26 | * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| 27 | * |
| 28 | * Carnegie Mellon requests users of this software to return to |
| 29 | * |
| 30 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| 31 | * School of Computer Science |
| 32 | * Carnegie Mellon University |
| 33 | * Pittsburgh PA 15213-3890 |
| 34 | * |
| 35 | * any improvements or extensions that they make and grant Carnegie the |
| 36 | * rights to redistribute these changes. |
| 37 | */ |
| 38 | |
| 39 | /* |
| 40 | * Virtual memory protection definitions. |
| 41 | */ |
| 42 | |
| 43 | #ifndef _VM_PROT_ |
| 44 | #define _VM_PROT_ |
| 45 | |
| 46 | /* |
| 47 | * Types defined: |
| 48 | * |
| 49 | * vm_prot_t VM protection values. |
| 50 | */ |
| 51 | |
| 52 | typedef int vm_prot_t; |
| 53 | |
| 54 | /* |
| 55 | * Protection values, defined as bits within the vm_prot_t type |
| 56 | */ |
| 57 | |
| 58 | #define VM_PROT_NONE ((vm_prot_t) 0x00) |
| 59 | |
| 60 | #define VM_PROT_READ ((vm_prot_t) 0x01) /* read permission */ |
| 61 | #define VM_PROT_WRITE ((vm_prot_t) 0x02) /* write permission */ |
| 62 | #define VM_PROT_EXECUTE ((vm_prot_t) 0x04) /* execute permission */ |
| 63 | |
| 64 | /* |
| 65 | * The default protection for newly-created virtual memory |
| 66 | */ |
| 67 | |
| 68 | #define VM_PROT_DEFAULT (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE) |
| 69 | |
| 70 | /* |
| 71 | * The maximum privileges possible, for parameter checking. |
| 72 | */ |
| 73 | |
| 74 | #define VM_PROT_ALL (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE) |
| 75 | |
| 76 | #endif /* _VM_PROT_ */ |