84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
/* $OpenBSD: uvm_fault.h,v 1.16 2020/11/06 11:52:39 mpi Exp $ */
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/* $NetBSD: uvm_fault.h,v 1.14 2000/06/26 14:21:17 mrg Exp $ */
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/*
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* Copyright (c) 1997 Charles D. Cranor and Washington University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: Id: uvm_fault.h,v 1.1.2.2 1997/12/08 16:07:12 chuck Exp
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*/
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#ifndef _UVM_UVM_FAULT_H_
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#define _UVM_UVM_FAULT_H_
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/*
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* fault types
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*/
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#define VM_FAULT_INVALID ((vm_fault_t) 0x0) /* invalid mapping */
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#define VM_FAULT_PROTECT ((vm_fault_t) 0x1) /* protection */
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#define VM_FAULT_WIRE ((vm_fault_t) 0x2) /* wire mapping */
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/*
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* fault data structures
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*/
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/*
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* uvm_faultinfo: to load one of these fill in all orig_* fields and
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* then call uvmfault_lookup on it.
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*/
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struct uvm_faultinfo {
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vm_map_t orig_map; /* IN: original map */
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vaddr_t orig_rvaddr; /* IN: original rounded VA */
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vsize_t orig_size; /* IN: original size of interest */
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vm_map_t map; /* map (could be a submap) */
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unsigned int mapv; /* map's version number */
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vm_map_entry_t entry; /* map entry (from 'map') */
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vsize_t size; /* size of interest */
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};
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#ifdef _KERNEL
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/*
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* fault prototypes
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*/
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void uvmfault_init(void);
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boolean_t uvmfault_lookup(struct uvm_faultinfo *, boolean_t);
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boolean_t uvmfault_relock(struct uvm_faultinfo *);
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void uvmfault_unlockall(struct uvm_faultinfo *, struct vm_amap *,
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struct uvm_object *);
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int uvmfault_anonget(struct uvm_faultinfo *, struct vm_amap *,
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struct vm_anon *);
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int uvm_fault_wire(vm_map_t, vaddr_t, vaddr_t, vm_prot_t);
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void uvm_fault_unwire(vm_map_t, vaddr_t, vaddr_t);
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void uvm_fault_unwire_locked(vm_map_t, vaddr_t, vaddr_t);
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#endif /* _KERNEL */
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#endif /* _UVM_UVM_FAULT_H_ */
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