[rtems commit] getentropy: Add test.
Sebastian Huber
sebh at rtems.org
Fri Nov 17 06:28:39 UTC 2017
Module: rtems
Branch: master
Commit: 1358d4c8246e1601832e769e43dc5bf048e4c1ff
Changeset: http://git.rtems.org/rtems/commit/?id=1358d4c8246e1601832e769e43dc5bf048e4c1ff
Author: Christian Mauderer <Christian.Mauderer at embedded-brains.de>
Date: Mon Nov 13 09:21:30 2017 +0100
getentropy: Add test.
Update #3239.
---
testsuites/libtests/Makefile.am | 1 +
testsuites/libtests/configure.ac | 1 +
testsuites/libtests/getentropy01/Makefile.am | 19 ++++
testsuites/libtests/getentropy01/getentropy01.doc | 17 ++++
testsuites/libtests/getentropy01/getentropy01.scn | 2 +
testsuites/libtests/getentropy01/init.c | 102 ++++++++++++++++++++++
6 files changed, 142 insertions(+)
diff --git a/testsuites/libtests/Makefile.am b/testsuites/libtests/Makefile.am
index e72ca1b..61f0022 100644
--- a/testsuites/libtests/Makefile.am
+++ b/testsuites/libtests/Makefile.am
@@ -54,6 +54,7 @@ _SUBDIRS += newlib01
_SUBDIRS += putenvtest
_SUBDIRS += pwdgrp01
_SUBDIRS += pwdgrp02
+_SUBDIRS += getentropy01
_SUBDIRS += rbheap01
_SUBDIRS += rtmonuse
_SUBDIRS += sha
diff --git a/testsuites/libtests/configure.ac b/testsuites/libtests/configure.ac
index bbdf4df..16cc095 100644
--- a/testsuites/libtests/configure.ac
+++ b/testsuites/libtests/configure.ac
@@ -155,6 +155,7 @@ newlib01/Makefile
putenvtest/Makefile
pwdgrp01/Makefile
pwdgrp02/Makefile
+getentropy01/Makefile
rbheap01/Makefile
rtmonuse/Makefile
sha/Makefile
diff --git a/testsuites/libtests/getentropy01/Makefile.am b/testsuites/libtests/getentropy01/Makefile.am
new file mode 100644
index 0000000..19ae137
--- /dev/null
+++ b/testsuites/libtests/getentropy01/Makefile.am
@@ -0,0 +1,19 @@
+rtems_tests_PROGRAMS = getentropy01
+getentropy01_SOURCES = init.c
+
+dist_rtems_tests_DATA = getentropy01.scn getentropy01.doc
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP at .cfg
+include $(top_srcdir)/../automake/compile.am
+include $(top_srcdir)/../automake/leaf.am
+
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include
+
+LINK_OBJS = $(getentropy01_OBJECTS)
+LINK_LIBS = $(getentropy01_LDLIBS)
+
+getentropy01$(EXEEXT): $(getentropy01_OBJECTS) $(getentropy01_DEPENDENCIES)
+ @rm -f getentropy01$(EXEEXT)
+ $(make-exe)
+
+include $(top_srcdir)/../automake/local.am
diff --git a/testsuites/libtests/getentropy01/getentropy01.doc b/testsuites/libtests/getentropy01/getentropy01.doc
new file mode 100644
index 0000000..722c7ab
--- /dev/null
+++ b/testsuites/libtests/getentropy01/getentropy01.doc
@@ -0,0 +1,17 @@
+This file describes the directives and concepts tested by this test set.
+
+test set name: random01
+
+directives:
+
+ getentropy
+
+concepts:
+
+ Ensure that getentropy() works with different sizes of arrays and delivers
+ different values on multiple calls. It is mainly a check that the function
+ does anything at all and does not write over the end of the buffer.
+
+ Note that this test doesn't check any quality of the random numbers. If you
+ need some reliable information about quality you should use something like the
+ Diehard tests.
diff --git a/testsuites/libtests/getentropy01/getentropy01.scn b/testsuites/libtests/getentropy01/getentropy01.scn
new file mode 100644
index 0000000..af49a22
--- /dev/null
+++ b/testsuites/libtests/getentropy01/getentropy01.scn
@@ -0,0 +1,2 @@
+*** TEST GETENTROPY 1 ***
+*** END OF TEST GETENTROPY 1 ***
diff --git a/testsuites/libtests/getentropy01/init.c b/testsuites/libtests/getentropy01/init.c
new file mode 100644
index 0000000..aea2e8b
--- /dev/null
+++ b/testsuites/libtests/getentropy01/init.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2017 embedded brains GmbH. All rights reserved.
+ *
+ * embedded brains GmbH
+ * Dornierstr. 4
+ * 82178 Puchheim
+ * Germany
+ * <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include "tmacros.h"
+
+#include <rtems.h>
+#include <unistd.h>
+#include <assert.h>
+
+const char rtems_test_name[] = "GETENTROPY 1";
+
+#define TEST_MAX_BYTES 32
+#define TEST_GUARD_BYTES 32
+#define TEST_GUARD 0xA5
+
+static char entropy_buffer1 [TEST_MAX_BYTES + TEST_GUARD_BYTES];
+static char entropy_buffer2 [TEST_MAX_BYTES + TEST_GUARD_BYTES];
+static char guard_buffer [TEST_MAX_BYTES + TEST_GUARD_BYTES];
+
+static void test_getentropy(size_t nr_bytes)
+{
+ int rv;
+ size_t try = 1;
+
+ /*
+ * For very small patterns, the probability that two random patterns are the
+ * same is quite high. Therefore retry the test for these a few times.
+ */
+ if (nr_bytes < 4) {
+ try = 4;
+ }
+
+ do {
+ --try;
+
+ /* Fill buffers with guard pattern */
+ memset(entropy_buffer1, TEST_GUARD, sizeof(entropy_buffer1));
+ memset(entropy_buffer2, TEST_GUARD, sizeof(entropy_buffer2));
+ memset(guard_buffer, TEST_GUARD, sizeof(entropy_buffer2));
+
+ /* Get entropy with the given size */
+ rv = getentropy(entropy_buffer1, nr_bytes);
+ assert(rv == 0);
+ rv = getentropy(entropy_buffer2, nr_bytes);
+ assert(rv == 0);
+
+ /* Check guard pattern */
+ rv = memcmp(entropy_buffer1 + nr_bytes, guard_buffer + nr_bytes,
+ sizeof(entropy_buffer1) - nr_bytes);
+ assert(rv == 0);
+ rv = memcmp(entropy_buffer2 + nr_bytes, guard_buffer + nr_bytes,
+ sizeof(entropy_buffer2) - nr_bytes);
+ assert(rv == 0);
+
+ /* Make sure that buffers are not the same */
+ rv = memcmp(entropy_buffer1, entropy_buffer2, sizeof(entropy_buffer1));
+ } while (try > 0 && rv == 0);
+ assert(rv != 0);
+}
+
+static void Init(rtems_task_argument arg)
+{
+ size_t i;
+
+ TEST_BEGIN();
+
+ for (i = 1; i <= TEST_MAX_BYTES; ++i) {
+ test_getentropy(i);
+ }
+
+ TEST_END();
+
+ rtems_test_exit(0);
+}
+
+#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
+
+#define CONFIGURE_MAXIMUM_TASKS 1
+
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
+
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+
+#define CONFIGURE_INIT
+
+#include <rtems/confdefs.h>
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