| 1 | /* Check cookie initialization for many auditors. Auditor template. |
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| 2 | Copyright (C) 2019-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | /* The macro MOD must be defined to the number of this auditor (an |
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| 20 | integer) before including this file. */ |
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| 21 | |
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| 22 | #include <link.h> |
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| 23 | #include <stdio.h> |
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| 24 | #include <unistd.h> |
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| 25 | |
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| 26 | /* Error counter for delayed error reporting. */ |
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| 27 | static int errors; |
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| 28 | |
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| 29 | unsigned int |
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| 30 | la_version (unsigned int version) |
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| 31 | { |
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| 32 | return version; |
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| 33 | } |
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| 34 | |
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| 35 | unsigned int |
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| 36 | la_objopen (struct link_map *map, Lmid_t lmid, |
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| 37 | uintptr_t *cookie) |
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| 38 | { |
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| 39 | struct link_map *cookie_map = (struct link_map *) *cookie; |
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| 40 | printf (format: "info: %d, la_objopen: map=%p name=%s cookie=%p:%p diff=%td\n" , |
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| 41 | MOD, map, map->l_name, cookie, cookie_map, |
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| 42 | (char *) cookie - (char *) map); |
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| 43 | fflush (stdout); |
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| 44 | if (map != cookie_map) |
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| 45 | { |
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| 46 | printf (format: "error: %d, la_objopen:" |
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| 47 | " map address does not match cookie value\n" , |
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| 48 | MOD); |
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| 49 | fflush (stdout); |
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| 50 | ++errors; |
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| 51 | } |
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| 52 | return 0; |
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| 53 | } |
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| 54 | |
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| 55 | extern unsigned int |
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| 56 | la_objclose (uintptr_t *__cookie) |
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| 57 | { |
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| 58 | if (errors != 0) |
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| 59 | { |
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| 60 | printf (format: "error: exiting due to previous errors" ); |
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| 61 | _exit (status: 1); |
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| 62 | } |
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| 63 | return 0; |
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| 64 | } |
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| 65 | |
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