From 1358d4c8246e1601832e769e43dc5bf048e4c1ff Mon Sep 17 00:00:00 2001 From: Christian Mauderer Date: Mon, 13 Nov 2017 09:21:30 +0100 Subject: 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(+) create mode 100644 testsuites/libtests/getentropy01/Makefile.am create mode 100644 testsuites/libtests/getentropy01/getentropy01.doc create mode 100644 testsuites/libtests/getentropy01/getentropy01.scn create mode 100644 testsuites/libtests/getentropy01/init.c diff --git a/testsuites/libtests/Makefile.am b/testsuites/libtests/Makefile.am index e72ca1bbaa..61f00220f8 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 bbdf4df9d1..16cc095991 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 0000000000..19ae137e43 --- /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@.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 0000000000..722c7ab63b --- /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 0000000000..af49a22d94 --- /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 0000000000..aea2e8bc73 --- /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 + * + * + * 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 +#include +#include + +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 -- cgit v1.2.3