dlfcn/tst-dladdr.c

   1 /* Test for dladdr.
   2    Copyright (C) 2000, 2001 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Volkmar Sieh <vs@caldera.de> and Andreas Jaeger <aj@suse.de>.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <dlfcn.h>
  22 #include <errno.h>
  23 #include <error.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include <ldsodefs.h>
  29
  30
  31 #define TEST_FUNCTION do_test ()
  32 extern int do_test (void);
  33
  34 int
  35 do_test (void)
  36 {
  37   void *handle;
  38   int (*sym) (void); /* We load ref1 from glreflib1.c.  */
  39   Dl_info info;
  40   int ret;
  41
  42
  43   handle = dlopen ("glreflib1.so", RTLD_NOW);
  44   if (handle == NULL)
  45     error (EXIT_FAILURE, 0, "cannot load: glreflib1.so");
  46
  47   sym = dlsym (handle, "ref1");
  48   if (sym == NULL)
  49     error (EXIT_FAILURE, 0, "dlsym failed");
  50
  51   memset (&info, 0, sizeof (info));
  52   ret = dladdr (sym, &info);
  53
  54   if (ret == 0)
  55     error (EXIT_FAILURE, 0, "dladdr failed");
  56
  57   printf ("address of ref1 = %lx\n",
  58           (unsigned long int)  DL_LOOKUP_ADDRESS (sym));
  59   printf ("ret = %d\n", ret);
  60   printf ("info.dli_fname = %p (\"%s\")\n", info.dli_fname, info.dli_fname);
  61   printf ("info.dli_fbase = %p\n", info.dli_fbase);
  62   printf ("info.dli_sname = %p (\"%s\")\n", info.dli_sname, info.dli_sname);
  63   printf ("info.dli_saddr = %p\n", info.dli_saddr);
  64
  65   if (info.dli_fname == NULL)
  66     error (EXIT_FAILURE, 0, "dli_fname is NULL");
  67   if (info.dli_fbase == NULL)
  68     error (EXIT_FAILURE, 0, "dli_fbase is NULL");
  69   if (info.dli_sname == NULL)
  70     error (EXIT_FAILURE, 0, "dli_sname is NULL");
  71   if (info.dli_saddr == NULL)
  72     error (EXIT_FAILURE, 0, "dli_saddr is NULL");
  73
  74   dlclose (handle);
  75
  76   return 0;
  77 }
  78
  79
  80 #include "../test-skeleton.c"