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_ */ 63