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Diffstat (limited to 'src/third_party/mac_headers/mach/vm_prot.h')
| -rw-r--r-- | src/third_party/mac_headers/mach/vm_prot.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/src/third_party/mac_headers/mach/vm_prot.h b/src/third_party/mac_headers/mach/vm_prot.h new file mode 100644 index 00000000..07c2114e --- /dev/null +++ b/src/third_party/mac_headers/mach/vm_prot.h @@ -0,0 +1,140 @@ +/* + * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ + */ +/* + * @OSF_COPYRIGHT@ + */ +/* + * 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 _MACH_VM_PROT_H_ +#define _MACH_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) + + +/* + * Another invalid protection value. + * Indicates that the other protection bits are to be applied as a mask + * against the actual protection bits of the map entry. + */ +#define VM_PROT_IS_MASK ((vm_prot_t) 0x40) + +#endif /* _MACH_VM_PROT_H_ */ |