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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 15:26:46 +0000 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 15:26:46 +0000 |
commit | df6d86d8822458cf787b5f5620490d6a962da3b8 (patch) | |
tree | 8d499fa24a32a195bd6e384dfb70639c45c4a9bb /elf/tst-noload.c | |
parent | 2c7242b971fd7b63fa842df15ec6fa3d0ff8aeb0 (diff) | |
parent | 1949a12d5da678a8532359a95717d8e63910d93b (diff) |
Merge commit 'refs/top-bases/t/____longjmp_chk' into t/____longjmp_chkt/____longjmp_chk
Diffstat (limited to 'elf/tst-noload.c')
-rw-r--r-- | elf/tst-noload.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/elf/tst-noload.c b/elf/tst-noload.c new file mode 100644 index 0000000000..70609e0416 --- /dev/null +++ b/elf/tst-noload.c @@ -0,0 +1,72 @@ +/* Verify that RTLD_NOLOAD works as expected. + + Copyright (C) 2016-2018 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 + <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; +} + +#include <support/test-driver.c> |