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Annotation of OSKit-Mach/include/mach/vm_prot.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  * 
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  * 
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  * 
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  * 
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  * 
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  *     File:   mach/vm_prot.h
        !            28:  *     Author: Avadis Tevanian, Jr., Michael Wayne Young
        !            29:  *
        !            30:  *     Virtual memory protection definitions.
        !            31:  *
        !            32:  */
        !            33: 
        !            34: #ifndef        _MACH_VM_PROT_H_
        !            35: #define        _MACH_VM_PROT_H_
        !            36: 
        !            37: /*
        !            38:  *     Types defined:
        !            39:  *
        !            40:  *     vm_prot_t               VM protection values.
        !            41:  */
        !            42: 
        !            43: typedef int            vm_prot_t;
        !            44: 
        !            45: /*
        !            46:  *     Protection values, defined as bits within the vm_prot_t type
        !            47:  */
        !            48: 
        !            49: #define        VM_PROT_NONE    ((vm_prot_t) 0x00)
        !            50: 
        !            51: #define VM_PROT_READ   ((vm_prot_t) 0x01)      /* read permission */
        !            52: #define VM_PROT_WRITE  ((vm_prot_t) 0x02)      /* write permission */
        !            53: #define VM_PROT_EXECUTE        ((vm_prot_t) 0x04)      /* execute permission */
        !            54: 
        !            55: /*
        !            56:  *     The default protection for newly-created virtual memory
        !            57:  */
        !            58: 
        !            59: #define VM_PROT_DEFAULT        (VM_PROT_READ|VM_PROT_WRITE)
        !            60: 
        !            61: /*
        !            62:  *     The maximum privileges possible, for parameter checking.
        !            63:  */
        !            64: 
        !            65: #define VM_PROT_ALL    (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
        !            66: 
        !            67: /*
        !            68:  *     An invalid protection value.
        !            69:  *     Used only by memory_object_lock_request to indicate no change
        !            70:  *     to page locks.  Using -1 here is a bad idea because it
        !            71:  *     looks like VM_PROT_ALL and then some.
        !            72:  */
        !            73: #define VM_PROT_NO_CHANGE      ((vm_prot_t) 0x08)
        !            74: 
        !            75: /*
        !            76:  *     This protection value says whether special notification is to be used.
        !            77:  */
        !            78: #define VM_PROT_NOTIFY         ((vm_prot_t) 0x10)
        !            79: #endif /* _MACH_VM_PROT_H_ */

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