| 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 | |
| 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 | unsigned long memguard_get_req_size(const void *); |
| 45 | int memguard_cmp_mtp(struct malloc_type *, unsigned long); |
| 46 | int memguard_cmp_zone(uma_zone_t); |
| 47 | int 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_ */ |