1 /* Check cookie initialization for many auditors. Auditor template.
2 Copyright (C) 2019-2021 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
la_version(unsigned int version)30 la_version (unsigned int version)
31 {
32 return version;
33 }
34
35 unsigned int
la_objopen(struct link_map * map,Lmid_t lmid,uintptr_t * cookie)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 ("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 ("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
la_objclose(uintptr_t * __cookie)56 la_objclose (uintptr_t *__cookie)
57 {
58 if (errors != 0)
59 {
60 printf ("error: exiting due to previous errors");
61 _exit (1);
62 }
63 return 0;
64 }
65