1  /* Test for dladdr.
       2     Copyright (C) 2000-2023 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 <error.h>
      22  #include <stdio.h>
      23  #include <stdlib.h>
      24  #include <string.h>
      25  
      26  
      27  #define TEST_FUNCTION do_test ()
      28  extern int do_test (void);
      29  
      30  int
      31  do_test (void)
      32  {
      33    void *handle;
      34    int (*sym) (void); /* We load ref1 from glreflib1.c.  */
      35    Dl_info info;
      36    int ret;
      37  
      38  
      39    handle = dlopen ("glreflib1.so", RTLD_NOW);
      40    if (handle == NULL)
      41      error (EXIT_FAILURE, 0, "cannot load: glreflib1.so");
      42  
      43    sym = dlsym (handle, "ref1");
      44    if (sym == NULL)
      45      error (EXIT_FAILURE, 0, "dlsym failed");
      46  
      47    memset (&info, 0, sizeof (info));
      48    ret = dladdr (sym, &info);
      49  
      50    if (ret == 0)
      51      error (EXIT_FAILURE, 0, "dladdr failed");
      52  
      53    printf ("ret = %d\n", ret);
      54    printf ("info.dli_fname = %p (\"%s\")\n", info.dli_fname, info.dli_fname);
      55    printf ("info.dli_fbase = %p\n", info.dli_fbase);
      56    printf ("info.dli_sname = %p (\"%s\")\n", info.dli_sname, info.dli_sname);
      57    printf ("info.dli_saddr = %p\n", info.dli_saddr);
      58  
      59    if (info.dli_fname == NULL)
      60      error (EXIT_FAILURE, 0, "dli_fname is NULL");
      61    if (info.dli_fbase == NULL)
      62      error (EXIT_FAILURE, 0, "dli_fbase is NULL");
      63    if (info.dli_sname == NULL)
      64      error (EXIT_FAILURE, 0, "dli_sname is NULL");
      65    if (info.dli_saddr == NULL)
      66      error (EXIT_FAILURE, 0, "dli_saddr is NULL");
      67  
      68    dlclose (handle);
      69  
      70    return 0;
      71  }
      72  
      73  
      74  #include "../test-skeleton.c"