diff options
Diffstat (limited to 'elf/tst-dlopen-self.c')
-rw-r--r-- | elf/tst-dlopen-self.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/elf/tst-dlopen-self.c b/elf/tst-dlopen-self.c new file mode 100644 index 0000000000..310f1b09d4 --- /dev/null +++ b/elf/tst-dlopen-self.c @@ -0,0 +1,55 @@ +/* Check that dlopen'ing the executable itself fails (bug 24900). + Copyright (C) 2014-2019 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 + <https://www.gnu.org/licenses/>. */ + +#include <dlfcn.h> +#include <stdlib.h> +#include <string.h> +#include <support/check.h> + +/* Call dlopen and check that fails with an error message indicating + an attempt to open an ET_EXEC or PIE object. */ +static void +check_dlopen_failure (const char *path) +{ + void *handle = dlopen (path, RTLD_LAZY); + if (handle != NULL) + FAIL_EXIT1 ("dlopen succeeded unexpectedly: %s", path); + + const char *message = dlerror (); + TEST_VERIFY_EXIT (message != NULL); + if ((strstr (message, + "cannot dynamically load position-independent executable") + == NULL) + && strstr (message, "cannot dynamically load executable") == NULL) + FAIL_EXIT1 ("invalid dlopen error message: \"%s\"", message); +} + +static int +do_test (int argc, char *argv[]) +{ + check_dlopen_failure (argv[0]); + + char *full_path = realpath (argv[0], NULL); + check_dlopen_failure (full_path); + free (full_path); + + return 0; +} + +#define TEST_FUNCTION_ARGV do_test +#include <support/test-driver.c> |