elf/tst-auditmod20.c

   1 /* Check dlopen failure on audit modules.
   2    Copyright (C) 2021-2023 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 <link.h>
  21 #include <stdlib.h>
  22
  23 unsigned int
  24 la_version (unsigned int v)
  25 {
  26   return LAV_CURRENT;
  27 }
  28
  29 static void
  30 check (void)
  31 {
  32   {
  33     void *mod = dlopen ("nonexistent.so", RTLD_NOW);
  34     if (mod != NULL)
  35       abort ();
  36   }
  37
  38   {
  39     void *mod = dlmopen (LM_ID_BASE, "nonexistent.so", RTLD_NOW);
  40     if (mod != NULL)
  41       abort ();
  42   }
  43 }
  44
  45 void
  46 la_activity (uintptr_t *cookie, unsigned int flag)
  47 {
  48   if (flag != LA_ACT_CONSISTENT)
  49     return;
  50   check ();
  51 }
  52
  53 void
  54 la_preinit (uintptr_t *cookie)
  55 {
  56   check ();
  57 }