1/*-
 2 * SPDX-License-Identifier: BSD-2-Clause
 3 *
 4 * Copyright (c) 2005,
 5 *     Bosko Milekic <bmilekic@FreeBSD.org>.  All rights reserved.
 6 *
 7 * Redistribution and use in source and binary forms, with or without
 8 * modification, are permitted provided that the following conditions
 9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice unmodified, this list of conditions, and the following
12 *    disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef _VM_MEMGUARD_H_
30#define	_VM_MEMGUARD_H_
31
32#include "opt_vm.h"
33
34struct malloc_type;
35struct vm_map;
36struct vmem;
37
38#ifdef DEBUG_MEMGUARD
39unsigned long	memguard_fudge(unsigned long, const struct vm_map *);
40void	memguard_init(struct vmem *);
41void 	*memguard_alloc(unsigned long, int);
42void	*memguard_realloc(void *, unsigned long, struct malloc_type *, int);
43void	memguard_free(void *);
44unsigned long	memguard_get_req_size(const void *);
45int	memguard_cmp_mtp(struct malloc_type *, unsigned long);
46int	memguard_cmp_zone(uma_zone_t);
47int	is_memguard_addr(void *);
48#else
49#define	memguard_fudge(size, xxx)	(size)
50#define	memguard_init(map)		do { } while (0)
51#define	memguard_alloc(size, flags)	NULL
52#define	memguard_realloc(a, s, mtp, f)	NULL
53#define	memguard_free(addr)		do { } while (0)
54#define	memguard_get_req_size(addr)	0
55#define	memguard_cmp_mtp(mtp, size)	0
56#define	memguard_cmp_zone(zone)		0
57#define	is_memguard_addr(addr)		0
58#endif
59
60#endif /* _VM_MEMGUARD_H_ */