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