summaryrefslogtreecommitdiff
path: root/elf/tst-noload.c
diff options
context:
space:
mode:
Diffstat (limited to 'elf/tst-noload.c')
-rw-r--r--elf/tst-noload.c72
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>