diff options
Diffstat (limited to 'elf/tst-noload.c')
-rw-r--r-- | elf/tst-noload.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/elf/tst-noload.c b/elf/tst-noload.c new file mode 100644 index 0000000000..941450c10b --- /dev/null +++ b/elf/tst-noload.c @@ -0,0 +1,73 @@ +/* Verify that RTLD_NOLOAD works as expected. + + Copyright (C) 2016 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 + <http://www.gnu.org/licenses/>. */ + +#include <dlfcn.h> +#include <stdio.h> +#include <gnu/lib-names.h> + +static int +do_test (void) +{ + /* Test that no object is loaded with RTLD_NOLOAD. */ + void *h1 = dlopen (LIBM_SO, RTLD_LAZY | RTLD_NOLOAD); + if (h1 != NULL) + { + printf ("h1: DSO has been loaded while it should have not\n"); + return 1; + } + + /* This used to segfault in some glibc versions. */ + void *h2 = dlopen (LIBM_SO, RTLD_LAZY | RTLD_NOLOAD | RTLD_NODELETE); + if (h2 != NULL) + { + printf ("h2: DSO has been loaded while it should have not\n"); + return 1; + } + + /* Test that loading an already loaded object returns the same. */ + void *h3 = dlopen (LIBM_SO, RTLD_LAZY); + if (h3 == NULL) + { + printf ("h3: failed to open DSO: %s\n", dlerror ()); + return 1; + } + void *h4 = dlopen (LIBM_SO, RTLD_LAZY | RTLD_NOLOAD); + if (h4 == NULL) + { + printf ("h4: failed to open DSO: %s\n", dlerror ()); + return 1; + } + if (h4 != h3) + { + printf ("h4: should return the same object\n"); + return 1; + } + + /* Cleanup */ + if (dlclose (h3) != 0) + { + printf ("h3: dlclose failed: %s\n", dlerror ()); + return 1; + } + + return 0; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |