elf/tst-dlmopen4.c

   1 /* Test struct r_debug_extended via DT_DEBUG.
   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 <stdio.h>
  20 #include <link.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <gnu/lib-names.h>
  24 #include <support/xdlfcn.h>
  25 #include <support/check.h>
  26 #include <support/test-driver.h>
  27
  28 #define E(x) x
  29 #define EW(x) ElfW(x)
  30 #include <dl-r_debug.h>
  31
  32 static int
  33 do_test (void)
  34 {
  35   ElfW(Dyn) *d;
  36   struct r_debug_extended *debug = NULL;
  37
  38   for (d = _DYNAMIC; d->d_tag != DT_NULL; ++d)
  39     {
  40       debug = (struct r_debug_extended *) r_debug_address (d);
  41       if (debug != NULL)
  42         break;
  43     }
  44
  45   TEST_VERIFY_EXIT (debug != NULL);
  46   TEST_COMPARE (debug->base.r_version, 1);
  47   TEST_VERIFY_EXIT (debug->r_next == NULL);
  48
  49   void *h = xdlmopen (LM_ID_NEWLM, "$ORIGIN/tst-dlmopen1mod.so",
  50                       RTLD_LAZY);
  51
  52   TEST_COMPARE (debug->base.r_version, 2);
  53   TEST_VERIFY_EXIT (debug->r_next != NULL);
  54   TEST_VERIFY_EXIT (debug->r_next->r_next == NULL);
  55   TEST_VERIFY_EXIT (debug->r_next->base.r_map != NULL);
  56   TEST_VERIFY_EXIT (debug->r_next->base.r_map->l_name != NULL);
  57   const char *name = basename (debug->r_next->base.r_map->l_name);
  58   TEST_COMPARE_STRING (name, "tst-dlmopen1mod.so");
  59
  60   xdlclose (h);
  61
  62   return 0;
  63 }
  64
  65 #include <support/test-driver.c>