1 /* Check dlopen failure on audit modules.
2    Copyright (C) 2021-2022 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 #include <dlfcn.h>
20 #include <link.h>
21 #include <stdlib.h>
22 
23 unsigned int
la_version(unsigned int v)24 la_version (unsigned int v)
25 {
26   return LAV_CURRENT;
27 }
28 
29 static void
check(void)30 check (void)
31 {
32   {
33     void *mod = dlopen ("nonexistent.so", RTLD_NOW);
34     if (mod != NULL)
35       abort ();
36   }
37 
38   {
39     void *mod = dlmopen (LM_ID_BASE, "nonexistent.so", RTLD_NOW);
40     if (mod != NULL)
41       abort ();
42   }
43 }
44 
45 void
la_activity(uintptr_t * cookie,unsigned int flag)46 la_activity (uintptr_t *cookie, unsigned int flag)
47 {
48   if (flag != LA_ACT_CONSISTENT)
49     return;
50   check ();
51 }
52 
53 void
la_preinit(uintptr_t * cookie)54 la_preinit (uintptr_t *cookie)
55 {
56   check ();
57 }
58