elf/tst-audit-tlsdesc-dlopen.c

   1 /* DT_AUDIT with modules with TLSDESC.
   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 <support/check.h>
  20 #include <support/xthread.h>
  21 #include <support/xdlfcn.h>
  22
  23 static void *
  24 thr_func (void *mod)
  25 {
  26   int* (*get_global1)(void) = xdlsym (mod, "get_global1");
  27   int* (*get_global2)(void) = xdlsym (mod, "get_global2");
  28   void (*set_global2)(int) = xdlsym (mod, "set_global2");
  29   int* (*get_local1)(void) = xdlsym (mod, "get_local1");
  30   int* (*get_local2)(void) = xdlsym (mod, "get_local2");
  31
  32   int *global1 = get_global1 ();
  33   TEST_COMPARE (*global1, 0);
  34   ++*global1;
  35
  36   int *global2 = get_global2 ();
  37   TEST_COMPARE (*global2, 0);
  38   ++*global2;
  39   TEST_COMPARE (*global2, 1);
  40
  41   set_global2 (10);
  42   TEST_COMPARE (*global2, 10);
  43
  44   int *local1 = get_local1 ();
  45   TEST_COMPARE (*local1, 0);
  46   ++*local1;
  47
  48   int *local2 = get_local2 ();
  49   TEST_COMPARE (*local2, 0);
  50   ++*local2;
  51
  52   return 0;
  53 }
  54
  55 static int
  56 do_test (void)
  57 {
  58   void *mod = xdlopen ("tst-audit-tlsdesc-mod1.so", RTLD_LAZY);
  59
  60   pthread_t thr = xpthread_create (NULL, thr_func, mod);
  61   void *r = xpthread_join (thr);
  62   TEST_VERIFY (r == NULL);
  63
  64   return 0;
  65 }
  66
  67 #include <support/test-driver.c>