1/*
2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * The Mach Operating System project at Carnegie-Mellon University.
7 *
8 * Redistribution and use in source and binary forms, with or without

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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: head/sys/vm/vm_glue.c 103767 2002-09-21 22:07:17Z jake $
63 */
64
65#include "opt_vm.h"
66
67#include <sys/param.h>
68#include <sys/systm.h>
69#include <sys/lock.h>
70#include <sys/mutex.h>

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144 */
145int
146useracc(addr, len, rw)
147 caddr_t addr;
148 int len, rw;
149{
150 boolean_t rv;
151 vm_prot_t prot;
152 vm_map_t map;
153
154 KASSERT((rw & ~VM_PROT_ALL) == 0,
155 ("illegal ``rw'' argument to useracc (%x)\n", rw));
156 prot = rw;
157 map = &curproc->p_vmspace->vm_map;
158 if ((vm_offset_t)addr + len > vm_map_max(map) ||
159 (vm_offset_t)addr + len < (vm_offset_t)addr) {
160 return (FALSE);
161 }
162 rv = vm_map_check_protection(map, trunc_page((vm_offset_t)addr),
163 round_page((vm_offset_t)addr + len), prot);
164 return (rv == TRUE);
165}
166
167/*
168 * MPSAFE
169 */
170void
171vslock(addr, len)

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