sys/vm/vm.h

   1 /*
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)vm.h        8.2 (Berkeley) 12/13/93
  34  *      @(#)vm_prot.h   8.1 (Berkeley) 6/11/93
  35  *      @(#)vm_inherit.h        8.1 (Berkeley) 6/11/93
  36  *
  37  * Copyright (c) 1987, 1990 Carnegie-Mellon University.
  38  * All rights reserved.
  39  *
  40  * Authors: Avadis Tevanian, Jr., Michael Wayne Young
  41  *
  42  * Permission to use, copy, modify and distribute this software and
  43  * its documentation is hereby granted, provided that both the copyright
  44  * notice and this permission notice appear in all copies of the
  45  * software, derivative works or modified versions, and any portions
  46  * thereof, and that both notices appear in supporting documentation.
  47  *
  48  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  49  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  50  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  51  *
  52  * Carnegie Mellon requests users of this software to return to
  53  *
  54  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  55  *  School of Computer Science
  56  *  Carnegie Mellon University
  57  *  Pittsburgh PA 15213-3890
  58  *
  59  * any improvements or extensions that they make and grant Carnegie the
  60  * rights to redistribute these changes.
  61  *
  62  * $FreeBSD: src/sys/vm/vm.h,v 1.16.2.1 2002/12/28 19:49:41 dillon Exp $
  63  * $DragonFly: src/sys/vm/vm.h,v 1.4 2004/12/15 09:44:45 dillon Exp $
  64  */
  65
  66 #ifndef VM_H
  67 #define VM_H
  68
  69 typedef char vm_inherit_t;      /* inheritance codes */
  70
  71 #define VM_INHERIT_SHARE        ((vm_inherit_t) 0)
  72 #define VM_INHERIT_COPY         ((vm_inherit_t) 1)
  73 #define VM_INHERIT_NONE         ((vm_inherit_t) 2)
  74 #define VM_INHERIT_DEFAULT      VM_INHERIT_COPY
  75
  76 typedef u_char vm_prot_t;       /* protection codes */
  77
  78 #define VM_PROT_NONE            ((vm_prot_t) 0x00)
  79 #define VM_PROT_READ            ((vm_prot_t) 0x01)
  80 #define VM_PROT_WRITE           ((vm_prot_t) 0x02)
  81 #define VM_PROT_EXECUTE         ((vm_prot_t) 0x04)
  82 #define VM_PROT_OVERRIDE_WRITE  ((vm_prot_t) 0x08)      /* copy-on-write */
  83
  84 #define VM_PROT_RW              (VM_PROT_READ|VM_PROT_WRITE)
  85 #define VM_PROT_ALL             (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
  86 #define VM_PROT_DEFAULT         VM_PROT_ALL
  87
  88 union vm_map_object;
  89 typedef union vm_map_object vm_map_object_t;
  90
  91 struct vm_map_entry;
  92 typedef struct vm_map_entry *vm_map_entry_t;
  93
  94 struct vm_map;
  95 typedef struct vm_map *vm_map_t;
  96
  97 struct vm_object;
  98 typedef struct vm_object *vm_object_t;
  99
 100 struct vm_object_lock;
 101 typedef struct vm_object_lock *vm_object_lock_t;
 102
 103 #ifndef _KERNEL
 104
 105 /*
 106  * This is defined in <sys/types.h> for the kernel so that vnode_if.h
 107  * doesn't have to include <vm/vm.h>.
 108  */
 109 struct vm_page;
 110 typedef struct vm_page *vm_page_t;
 111 #endif
 112
 113 #endif                          /* VM_H */