/* Check compatibility of CET-enabled executable with dlopened legacy shared object. Copyright (C) 2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see . */ #include #include #include extern int in_dso_2 (void); static int do_test (void) { static const char modname[] = "tst-cet-legacy-mod-1.so"; int (*fp) (void); void *h; h = dlopen (modname, RTLD_LAZY); if (h == NULL) { printf ("cannot open '%s': %s\n", modname, dlerror ()); exit (1); } fp = dlsym (h, "in_dso_1"); if (fp == NULL) { printf ("cannot get symbol 'in_dso': %s\n", dlerror ()); exit (1); } if (fp () != 0x1234678) { puts ("in_dso_1 () != 0x1234678"); exit (1); } if (in_dso_2 () != 0xbadbeef) { puts ("in_dso_2 () != 0xbadbeef"); exit (1); } dlclose (h); return 0; } #include