1 /* Test unrelated dlopen after dlopen failure involving NODELETE.
2 Copyright (C) 2019-2022 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 <errno.h>
21 #include <gnu/lib-names.h>
22 #include <stddef.h>
23 #include <stdio.h>
24 #include <string.h>
25 #include <support/check.h>
26 #include <support/xdlfcn.h>
27
28 static int
do_test(void)29 do_test (void)
30 {
31 TEST_VERIFY (dlsym (NULL, "no_delete_mod_function") == NULL);
32
33 /* This is expected to fail because of the missing dependency. */
34 puts ("info: attempting to load tst-dlopenfailmod1.so");
35 TEST_VERIFY (dlopen ("tst-dlopenfailmod1.so", RTLD_LAZY) == NULL);
36 const char *message = dlerror ();
37 TEST_COMPARE_STRING (message,
38 "tst-dlopenfail-missingmod.so:"
39 " cannot open shared object file:"
40 " No such file or directory");
41
42 /* Open a small shared object. With a dangling GL (dl_initfirst)
43 pointer, this is likely to crash because there is no longer any
44 mapped text segment there (bug 25396). */
45
46 puts ("info: attempting to load tst-dlopenfailmod3.so");
47 xdlclose (xdlopen ("tst-dlopenfailmod3.so", RTLD_NOW));
48
49 return 0;
50 }
51
52 /* Do not perturb the dangling link map. With M_PERTURB, the link map
53 appears to have l_init_called set, so there are no constructor
54 calls and no crashes. */
55 #define TEST_NO_MALLOPT
56 #include <support/test-driver.c>
57