FreeBSD/Linux Kernel Cross Reference
sys/uvm/uvm_fault.h

     /*      $NetBSD: uvm_fault.h,v 1.17 2004/03/24 07:55:01 junyoung Exp $  */
     
     /*
      *
      * Copyright (c) 1997 Charles D. Cranor and Washington University.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Charles D. Cranor and
     *      Washington University.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * from: Id: uvm_fault.h,v 1.1.2.2 1997/12/08 16:07:12 chuck Exp
     */
    
    #ifndef _UVM_UVM_FAULT_H_
    #define _UVM_UVM_FAULT_H_
    
    /*
     * fault types
     */
    
    #define VM_FAULT_INVALID ((vm_fault_t) 0x0)     /* invalid mapping */
    #define VM_FAULT_PROTECT ((vm_fault_t) 0x1)     /* protection */
    #define VM_FAULT_WIRE    ((vm_fault_t) 0x2)     /* wire mapping */
    #define VM_FAULT_WIREMAX ((vm_fault_t) 0x3)     /* wire, allow maxprot */
    
    /*
     * fault data structures
     */
    
    /*
     * uvm_faultinfo: to load one of these fill in all orig_* fields and
     * then call uvmfault_lookup on it.
     */
    
    
    struct uvm_faultinfo {
            struct vm_map *orig_map;                /* IN: original map */
            vaddr_t orig_rvaddr;            /* IN: original rounded VA */
            vsize_t orig_size;              /* IN: original size of interest */
            struct vm_map *map;                     /* map (could be a submap) */
            unsigned int mapv;              /* map's version number */
            struct vm_map_entry *entry;             /* map entry (from 'map') */
            vsize_t size;                   /* size of interest */
    };
    
    #ifdef _KERNEL
    
    /*
     * fault prototypes
     */
    
    int uvmfault_anonget(struct uvm_faultinfo *, struct vm_amap *,
                         struct vm_anon *);
    
    int uvm_fault_wire(struct vm_map *, vaddr_t, vaddr_t, vm_fault_t,
                       vm_prot_t);
    void uvm_fault_unwire(struct vm_map *, vaddr_t, vaddr_t);
    void uvm_fault_unwire_locked(struct vm_map *, vaddr_t, vaddr_t);
    
    #endif /* _KERNEL */
    
    #endif /* _UVM_UVM_FAULT_H_ */

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