about summary refs log tree commit diff
path: root/elf/tst-nodelete-opened.c
blob: 43b00fa16dd31aa48b6883ea4117b8731f6be6fa (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
/* Verify that an already opened DSO opened agained with RTLD_NODELETE actually
   sets the NODELETE flag.

   Copyright (C) 2015 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <dlfcn.h>
#include <stdio.h>

int
do_test (void)
{
  void *h1 = dlopen ("$ORIGIN/tst-nodelete-opened-lib.so", RTLD_LAZY);
  if (h1 == NULL)
    {
      printf ("h1: failed to open DSO: %s\n", dlerror ());
      return 1;
    }

  void *h2 = dlopen ("$ORIGIN/tst-nodelete-opened-lib.so",
		     RTLD_LAZY | RTLD_NODELETE);
  if (h2 == NULL)
    {
      printf ("h2: failed to open DSO: %s\n", dlerror ());
      return 1;
    }

  int *foo = dlsym (h2, "foo_var");
  if (foo == NULL)
    {
      printf ("failed to load symbol foo_var: %s\n", dlerror ());
      return 1;
    }

  if (dlclose (h1) != 0)
    {
      printf ("h1: dlclose failed: %s\n", dlerror ());
      return 1;
    }

  if (dlclose (h2) != 0)
    {
      printf ("h2: dlclose failed: %s\n", dlerror ());
      return 1;
    }

  printf ("foo == %d\n", *foo);

  return 0;
}

#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"