1 | /* Check cookie initialization for many auditors. Auditor template. |
2 | Copyright (C) 2019-2024 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | /* The macro MOD must be defined to the number of this auditor (an |
20 | integer) before including this file. */ |
21 | |
22 | #include <link.h> |
23 | #include <stdio.h> |
24 | #include <unistd.h> |
25 | |
26 | /* Error counter for delayed error reporting. */ |
27 | static int errors; |
28 | |
29 | unsigned int |
30 | la_version (unsigned int version) |
31 | { |
32 | return version; |
33 | } |
34 | |
35 | unsigned int |
36 | la_objopen (struct link_map *map, Lmid_t lmid, |
37 | uintptr_t *cookie) |
38 | { |
39 | struct link_map *cookie_map = (struct link_map *) *cookie; |
40 | printf (format: "info: %d, la_objopen: map=%p name=%s cookie=%p:%p diff=%td\n" , |
41 | MOD, map, map->l_name, cookie, cookie_map, |
42 | (char *) cookie - (char *) map); |
43 | fflush (stdout); |
44 | if (map != cookie_map) |
45 | { |
46 | printf (format: "error: %d, la_objopen:" |
47 | " map address does not match cookie value\n" , |
48 | MOD); |
49 | fflush (stdout); |
50 | ++errors; |
51 | } |
52 | return 0; |
53 | } |
54 | |
55 | extern unsigned int |
56 | la_objclose (uintptr_t *__cookie) |
57 | { |
58 | if (errors != 0) |
59 | { |
60 | printf (format: "error: exiting due to previous errors" ); |
61 | _exit (status: 1); |
62 | } |
63 | return 0; |
64 | } |
65 | |