| Eugene Uriev | f5f24c8 | 2024-03-31 23:03:21 +0300 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.1+ */ |
| 2 | /* |
| 3 | * Copyright (C) 1996-2024 Free Software Foundation, Inc. |
| 4 | * This file is part of the GNU C Library. |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * <https://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | #ifndef _MCHECK_H |
| 18 | #define _MCHECK_H 1 |
| 19 | |
| 20 | /* |
| 21 | * Return values for `mprobe': these are the kinds of inconsistencies that |
| 22 | * `mcheck' enables detection of. |
| 23 | */ |
| 24 | enum mcheck_status { |
| 25 | MCHECK_DISABLED = -1, /* Consistency checking is not turned on. */ |
| 26 | MCHECK_OK, /* Block is fine. */ |
| 27 | MCHECK_FREE, /* Block freed twice. */ |
| 28 | MCHECK_HEAD, /* Memory before the block was clobbered. */ |
| 29 | MCHECK_TAIL /* Memory after the block was clobbered. */ |
| 30 | }; |
| 31 | |
| 32 | typedef void (*mcheck_abortfunc_t)(enum mcheck_status); |
| 33 | |
| 34 | int mcheck(mcheck_abortfunc_t func); |
| 35 | |
| 36 | /* |
| 37 | * Check for aberrations in a particular malloc'd block. These are the |
| 38 | * same checks that `mcheck' does, when you free or reallocate a block. |
| 39 | */ |
| 40 | enum mcheck_status mprobe(void *__ptr); |
| 41 | |
| 42 | #endif |