FreeBSD/Linux Kernel Cross Reference
sys/vm/memguard.h
1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 * $FreeBSD$
29 */
30
31 #ifndef _VM_MEMGUARD_H_
32 #define _VM_MEMGUARD_H_
33
34 #include "opt_vm.h"
35
36 struct malloc_type;
37 struct vm_map;
38 struct vmem;
39
40 #ifdef DEBUG_MEMGUARD
41 unsigned long memguard_fudge(unsigned long, const struct vm_map *);
42 void memguard_init(struct vmem *);
43 void *memguard_alloc(unsigned long, int);
44 void *memguard_realloc(void *, unsigned long, struct malloc_type *, int);
45 void memguard_free(void *);
46 unsigned long memguard_get_req_size(const void *);
47 int memguard_cmp_mtp(struct malloc_type *, unsigned long);
48 int memguard_cmp_zone(uma_zone_t);
49 int is_memguard_addr(void *);
50 #else
51 #define memguard_fudge(size, xxx) (size)
52 #define memguard_init(map) do { } while (0)
53 #define memguard_alloc(size, flags) NULL
54 #define memguard_realloc(a, s, mtp, f) NULL
55 #define memguard_free(addr) do { } while (0)
56 #define memguard_get_req_size(addr) 0
57 #define memguard_cmp_mtp(mtp, size) 0
58 #define memguard_cmp_zone(zone) 0
59 #define is_memguard_addr(addr) 0
60 #endif
61
62 #endif /* _VM_MEMGUARD_H_ */
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