Module: xenomai-3
Branch: master
Commit: 8d5ae69e6b93cb4960a7cd9b271ef7047cbb2a9f
URL:    
http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=8d5ae69e6b93cb4960a7cd9b271ef7047cbb2a9f

Author: Philippe Gerum <r...@xenomai.org>
Date:   Fri Jun 19 14:37:46 2015 +0200

testsuite/smokey: add POSIX clock testing code

---

 configure.ac                               |    1 +
 testsuite/regression/posix/Makefile.am     |    1 -
 testsuite/regression/posix/clock_settime.c |  224 --------------
 testsuite/smokey/Makefile.am               |    2 +
 testsuite/smokey/posix-clock/Makefile.am   |    9 +
 testsuite/smokey/posix-clock/posix-clock.c |  458 ++++++++++++++++++++++++++++
 6 files changed, 470 insertions(+), 225 deletions(-)

diff --git a/configure.ac b/configure.ac
index 118d668..14a3354 100644
--- a/configure.ac
+++ b/configure.ac
@@ -934,6 +934,7 @@ AC_CONFIG_FILES([ \
        testsuite/smokey/bufp/Makefile \
        testsuite/smokey/fork-exec/Makefile \
        testsuite/smokey/sigdebug/Makefile \
+       testsuite/smokey/posix-clock/Makefile \
        testsuite/clocktest/Makefile \
        testsuite/xeno-test/Makefile \
        testsuite/regression/Makefile \
diff --git a/testsuite/regression/posix/Makefile.am 
b/testsuite/regression/posix/Makefile.am
index 01aab8e..f78c244 100644
--- a/testsuite/regression/posix/Makefile.am
+++ b/testsuite/regression/posix/Makefile.am
@@ -5,7 +5,6 @@ CCLD = $(top_srcdir)/scripts/wrap-link.sh $(CC)
 noinst_HEADERS = check.h
 
 test_PROGRAMS = \
-       clock_settime \
        leaks \
        mq_select \
        timerfd
diff --git a/testsuite/regression/posix/clock_settime.c 
b/testsuite/regression/posix/clock_settime.c
deleted file mode 100644
index 236cc93..0000000
--- a/testsuite/regression/posix/clock_settime.c
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- * Copyright (C) 2014 Gilles Chanteperdrix <g...@xenomai.org>
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#undef NDEBUG
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <unistd.h>
-#include <time.h>
-#include <sys/timerfd.h>
-#include "check.h"
-
-static void clock_increase_before_oneshot_timer_first_tick(void)
-{
-       unsigned long long ticks;
-       struct itimerspec timer;
-       struct timespec now;
-       int t;
-
-       check_unix(t = timerfd_create(CLOCK_REALTIME, 0));
-       check_unix(clock_gettime(CLOCK_REALTIME, &now));
-       timer.it_value = now;
-       timer.it_value.tv_sec++;
-       timer.it_interval.tv_sec = 0;
-       timer.it_interval.tv_nsec = 0;
-       check_unix(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, NULL));
-       now.tv_sec += 5;
-       check_unix(clock_settime(CLOCK_REALTIME, &now));
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 1);
-       timer.it_value = now;
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       assert(now.tv_sec * 1000000000ULL + now.tv_nsec -
-               (timer.it_value.tv_sec * 1000000000ULL + timer.it_value.tv_nsec)
-               < 1000000000);
-       check_unix(close(t));
-}
-
-static void clock_increase_before_periodic_timer_first_tick(void)
-{
-       unsigned long long ticks;
-       struct itimerspec timer;
-       struct timespec now;
-       int t;
-
-       check_unix(t = timerfd_create(CLOCK_REALTIME, 0));
-       check_unix(clock_gettime(CLOCK_REALTIME, &now));
-       timer.it_value = now;
-       timer.it_value.tv_sec++;
-       timer.it_interval.tv_sec = 1;
-       timer.it_interval.tv_nsec = 0;
-       check_unix(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, NULL));
-       now.tv_sec += 5;
-       check_unix(clock_settime(CLOCK_REALTIME, &now));
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 5);
-       timer.it_value = now;
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       assert(now.tv_sec * 1000000000ULL + now.tv_nsec -
-               (timer.it_value.tv_sec * 1000000000ULL + timer.it_value.tv_nsec)
-               < 1000000000);
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 1);
-       check_unix(close(t));
-}
-
-static void clock_increase_after_periodic_timer_first_tick(void)
-{
-       unsigned long long ticks;
-       struct itimerspec timer;
-       struct timespec now;
-       int t;
-
-       check_unix(t = timerfd_create(CLOCK_REALTIME, 0));
-       check_unix(clock_gettime(CLOCK_REALTIME, &now));
-       timer.it_value = now;
-       timer.it_value.tv_sec++;
-       timer.it_interval.tv_sec = 1;
-       timer.it_interval.tv_nsec = 0;
-       check_unix(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, NULL));
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 1);
-       check_unix(clock_gettime(CLOCK_REALTIME, &now));
-       now.tv_sec += 5;
-       check_unix(clock_settime(CLOCK_REALTIME, &now));
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 5);
-       timer.it_value = now;
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       assert(now.tv_sec * 1000000000ULL + now.tv_nsec -
-               (timer.it_value.tv_sec * 1000000000ULL + timer.it_value.tv_nsec)
-               < 1000000000);
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 1);
-       check_unix(close(t));
-}
-
-static void clock_decrease_before_oneshot_timer_first_tick(void)
-{
-       unsigned long long ticks;
-       struct itimerspec timer;
-       struct timespec now;
-       long long diff;
-       int t;
-
-       check_unix(t = timerfd_create(CLOCK_REALTIME, 0));
-       check_unix(clock_gettime(CLOCK_REALTIME, &now));
-       timer.it_value = now;
-       timer.it_value.tv_sec++;
-       timer.it_interval.tv_sec = 0;
-       timer.it_interval.tv_nsec = 0;
-       check_unix(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, NULL));
-       now.tv_sec -= 5;
-       check_unix(clock_settime(CLOCK_REALTIME, &now));
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 1);
-       timer.it_value = now;
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       diff = now.tv_sec * 1000000000ULL + now.tv_nsec -
-               (timer.it_value.tv_sec * 1000000000ULL + 
timer.it_value.tv_nsec);
-       assert(diff >= 5500000000LL && diff <= 6500000000LL);
-       check_unix(close(t));
-}
-
-static void clock_decrease_before_periodic_timer_first_tick(void)
-{
-       unsigned long long ticks;
-       struct itimerspec timer;
-       struct timespec now;
-       long long diff;
-       int t;
-
-       check_unix(t = timerfd_create(CLOCK_REALTIME, 0));
-       check_unix(clock_gettime(CLOCK_REALTIME, &now));
-       timer.it_value = now;
-       timer.it_value.tv_sec++;
-       timer.it_interval.tv_sec = 1;
-       timer.it_interval.tv_nsec = 0;
-       check_unix(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, NULL));
-       now.tv_sec -= 5;
-       check_unix(clock_settime(CLOCK_REALTIME, &now));
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 1);
-       timer.it_value = now;
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       diff = now.tv_sec * 1000000000ULL + now.tv_nsec -
-               (timer.it_value.tv_sec * 1000000000ULL + 
timer.it_value.tv_nsec);
-       assert(diff >= 5500000000LL && diff <= 6500000000LL);
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 1);
-       check_unix(close(t));
-}
-
-static void clock_decrease_after_periodic_timer_first_tick(void)
-{
-       unsigned long long ticks;
-       struct itimerspec timer;
-       struct timespec now;
-       long long diff;
-       int t;
-
-       check_unix(t = timerfd_create(CLOCK_REALTIME, 0));
-       check_unix(clock_gettime(CLOCK_REALTIME, &now));
-       timer.it_value = now;
-       timer.it_value.tv_sec++;
-       timer.it_interval.tv_sec = 1;
-       timer.it_interval.tv_nsec = 0;
-       check_unix(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, NULL));
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 1);
-       check_unix(clock_gettime(CLOCK_REALTIME, &now));
-       now.tv_sec -= 5;
-       check_unix(clock_settime(CLOCK_REALTIME, &now));
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 1);
-       timer.it_value = now;
-       check_unix(clock_gettime(CLOCK_MONOTONIC, &now));
-       diff = now.tv_sec * 1000000000ULL + now.tv_nsec -
-               (timer.it_value.tv_sec * 1000000000ULL + 
timer.it_value.tv_nsec);
-       assert(diff < 1000000000);
-       check_unix(read(t, &ticks, sizeof(ticks)));
-       assert(ticks == 1);
-       check_unix(close(t));
-}
-
-int main(void)
-{
-       clock_increase_before_oneshot_timer_first_tick();
-       clock_increase_before_periodic_timer_first_tick();
-       clock_increase_after_periodic_timer_first_tick();
-       clock_decrease_before_oneshot_timer_first_tick();
-       clock_decrease_before_periodic_timer_first_tick();
-       clock_decrease_after_periodic_timer_first_tick();
-       return EXIT_SUCCESS;
-}
diff --git a/testsuite/smokey/Makefile.am b/testsuite/smokey/Makefile.am
index 70192a9..f5a866c 100644
--- a/testsuite/smokey/Makefile.am
+++ b/testsuite/smokey/Makefile.am
@@ -10,6 +10,7 @@ wrappers = $(XENO_POSIX_WRAPPERS)
 SUBDIRS =              \
        arith           \
        bufp            \
+       clock           \
        cond-torture    \
        fork-exec       \
        iddp            \
@@ -49,6 +50,7 @@ smokey_LDADD =                                        \
 DIST_SUBDIRS =                 \
        arith           \
        bufp            \
+       clock           \
        cond-torture    \
        fork-exec       \
        iddp            \
diff --git a/testsuite/smokey/posix-clock/Makefile.am 
b/testsuite/smokey/posix-clock/Makefile.am
new file mode 100644
index 0000000..e5dd207
--- /dev/null
+++ b/testsuite/smokey/posix-clock/Makefile.am
@@ -0,0 +1,9 @@
+
+noinst_LIBRARIES = libposix-clock.a
+
+libposix_clock_a_SOURCES = posix-clock.c
+
+libposix_clock_a_CPPFLAGS =    \
+       @XENO_USER_CFLAGS@      \
+       -I$(top_srcdir)         \
+       -I$(top_srcdir)/include
diff --git a/testsuite/smokey/posix-clock/posix-clock.c 
b/testsuite/smokey/posix-clock/posix-clock.c
new file mode 100644
index 0000000..9781565
--- /dev/null
+++ b/testsuite/smokey/posix-clock/posix-clock.c
@@ -0,0 +1,458 @@
+/*
+ * Copyright (C) 2014 Gilles Chanteperdrix <g...@xenomai.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <unistd.h>
+#include <time.h>
+#include <smokey/smokey.h>
+#include <sys/timerfd.h>
+
+smokey_test_plugin(posix_clock,
+                  SMOKEY_NOARGS,
+                  "Check POSIX clock services."
+);
+
+static int clock_increase_before_oneshot_timer_first_tick(void)
+{
+       unsigned long long ticks;
+       struct itimerspec timer;
+       struct timespec now;
+       int t, ret;
+
+       smokey_note(__func__);
+       
+       t = smokey_check_errno(timerfd_create(CLOCK_REALTIME, 0));
+       if (t < 0)
+               return t;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+
+       timer.it_value = now;
+       timer.it_value.tv_sec++;
+       timer.it_interval.tv_sec = 0;
+       timer.it_interval.tv_nsec = 0;
+
+       ret = smokey_check_errno(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, 
NULL));
+       if (ret)
+               return ret;
+
+       now.tv_sec += 5;
+
+       ret = smokey_check_errno(clock_settime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+
+       if (!smokey_assert(ticks == 1))
+               return -EINVAL;
+
+       timer.it_value = now;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+       
+       if (!smokey_assert(now.tv_sec * 1000000000ULL + now.tv_nsec -
+                          (timer.it_value.tv_sec * 1000000000ULL + 
timer.it_value.tv_nsec)
+                          < 1000000000))
+               return -EINVAL;
+       
+       return smokey_check_errno(close(t));
+}
+
+static int clock_increase_before_periodic_timer_first_tick(void)
+{
+       unsigned long long ticks;
+       struct itimerspec timer;
+       struct timespec now;
+       int t, ret;
+
+       smokey_note(__func__);
+       
+       t = smokey_check_errno(timerfd_create(CLOCK_REALTIME, 0));
+       if (t < 0)
+               return t;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+       
+       timer.it_value = now;
+       timer.it_value.tv_sec++;
+       timer.it_interval.tv_sec = 1;
+       timer.it_interval.tv_nsec = 0;
+       ret = smokey_check_errno(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, 
NULL));
+       if (ret)
+               return ret;
+
+       now.tv_sec += 5;
+
+       ret = smokey_check_errno(clock_settime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+       
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+       
+       if (!smokey_assert(ticks == 5))
+               return -EINVAL;
+       
+       timer.it_value = now;
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+       
+       if (!smokey_assert(now.tv_sec * 1000000000ULL + now.tv_nsec -
+                          (timer.it_value.tv_sec * 1000000000ULL + 
timer.it_value.tv_nsec)
+                          < 1000000000))
+               return -EINVAL;
+       
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+       
+       if (!smokey_assert(ticks == 1))
+               return -EINVAL;
+       
+       return smokey_check_errno(close(t));
+}
+
+static int clock_increase_after_periodic_timer_first_tick(void)
+{
+       unsigned long long ticks;
+       struct itimerspec timer;
+       struct timespec now;
+       int t, ret;
+
+       smokey_note(__func__);
+       
+       t = smokey_check_errno(timerfd_create(CLOCK_REALTIME, 0));
+       if (t < 0)
+               return t;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+       
+       timer.it_value = now;
+       timer.it_value.tv_sec++;
+       timer.it_interval.tv_sec = 1;
+       timer.it_interval.tv_nsec = 0;
+
+       ret = smokey_check_errno(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, 
NULL));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+       
+       if (!smokey_assert(ticks == 1))
+               return -EINVAL;
+       
+       ret = smokey_check_errno(clock_gettime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+       
+       now.tv_sec += 5;
+
+       ret = smokey_check_errno(clock_settime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+       
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+
+       if (!smokey_assert(ticks == 5))
+               return -EINVAL;
+       
+       timer.it_value = now;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+
+       if (!smokey_assert(now.tv_sec * 1000000000ULL + now.tv_nsec -
+               (timer.it_value.tv_sec * 1000000000ULL + timer.it_value.tv_nsec)
+                          < 1000000000))
+               return -EINVAL;
+
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+
+       if (!smokey_assert(ticks == 1))
+               return -EINVAL;
+
+       return smokey_check_errno(close(t));
+}
+
+static int clock_decrease_before_oneshot_timer_first_tick(void)
+{
+       unsigned long long ticks;
+       struct itimerspec timer;
+       struct timespec now;
+       long long diff;
+       int t, ret;
+
+       smokey_note(__func__);
+       
+       t = smokey_check_errno(timerfd_create(CLOCK_REALTIME, 0));
+       if (t < 0)
+               return t;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+
+       timer.it_value = now;
+       timer.it_value.tv_sec++;
+       timer.it_interval.tv_sec = 0;
+       timer.it_interval.tv_nsec = 0;
+
+       ret = smokey_check_errno(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, 
NULL));
+       if (ret)
+               return ret;
+
+       now.tv_sec -= 5;
+
+       ret = smokey_check_errno(clock_settime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+       
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+
+       if (!smokey_assert(ticks == 1))
+               return -EINVAL;
+
+       timer.it_value = now;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+
+       diff = now.tv_sec * 1000000000ULL + now.tv_nsec -
+               (timer.it_value.tv_sec * 1000000000ULL + 
timer.it_value.tv_nsec);
+
+       if (!smokey_assert(diff >= 5500000000LL && diff <= 6500000000LL))
+               return -EINVAL;
+       
+       return smokey_check_errno(close(t));
+}
+
+static int clock_decrease_before_periodic_timer_first_tick(void)
+{
+       unsigned long long ticks;
+       struct itimerspec timer;
+       struct timespec now;
+       long long diff;
+       int t, ret;
+
+       smokey_note(__func__);
+       
+       t = smokey_check_errno(timerfd_create(CLOCK_REALTIME, 0));
+       if (t < 0)
+               return t;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+       
+       timer.it_value = now;
+       timer.it_value.tv_sec++;
+       timer.it_interval.tv_sec = 1;
+       timer.it_interval.tv_nsec = 0;
+
+       ret = smokey_check_errno(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, 
NULL));
+       if (ret)
+               return ret;
+
+       now.tv_sec -= 5;
+
+       ret = smokey_check_errno(clock_settime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+
+       if (!smokey_assert(ticks == 1))
+               return -EINVAL;
+
+       timer.it_value = now;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+
+       diff = now.tv_sec * 1000000000ULL + now.tv_nsec -
+               (timer.it_value.tv_sec * 1000000000ULL + 
timer.it_value.tv_nsec);
+
+       if (!smokey_assert(diff >= 5500000000LL && diff <= 6500000000LL))
+               return -EINVAL;
+       
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+       
+       if (!smokey_assert(ticks == 1))
+               return -EINVAL;
+
+       return smokey_check_errno(close(t));
+}
+
+static int clock_decrease_after_periodic_timer_first_tick(void)
+{
+       unsigned long long ticks;
+       struct itimerspec timer;
+       struct timespec now;
+       long long diff;
+       int t, ret;
+
+       smokey_note(__func__);
+
+       t = smokey_check_errno(timerfd_create(CLOCK_REALTIME, 0));
+       if (t < 0)
+               return t;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+       
+       timer.it_value = now;
+       timer.it_value.tv_sec++;
+       timer.it_interval.tv_sec = 1;
+       timer.it_interval.tv_nsec = 0;
+
+       ret = smokey_check_errno(timerfd_settime(t, TFD_TIMER_ABSTIME, &timer, 
NULL));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+
+       if (!smokey_assert(ticks == 1))
+               return -EINVAL;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+
+       now.tv_sec -= 5;
+
+       ret = smokey_check_errno(clock_settime(CLOCK_REALTIME, &now));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+
+       if (!smokey_assert(ticks == 1))
+               return -EINVAL;
+
+       timer.it_value = now;
+
+       ret = smokey_check_errno(clock_gettime(CLOCK_MONOTONIC, &now));
+       if (ret)
+               return ret;
+
+       diff = now.tv_sec * 1000000000ULL + now.tv_nsec -
+               (timer.it_value.tv_sec * 1000000000ULL + 
timer.it_value.tv_nsec);
+       if (!smokey_assert(diff < 1000000000))
+               return -EINVAL;
+       
+       ret = smokey_check_errno(read(t, &ticks, sizeof(ticks)));
+       if (ret < 0)
+               return ret;
+
+       if (!smokey_assert(ticks == 1))
+               return -EINVAL;
+
+       return smokey_check_errno(close(t));
+}
+
+static int run_posix_clock(struct smokey_test *t, int argc, char *const argv[])
+{
+       int ret;
+
+       ret = clock_increase_before_oneshot_timer_first_tick();
+       if (ret)
+               return ret;
+       
+       ret = clock_increase_before_periodic_timer_first_tick();
+       if (ret)
+               return ret;
+
+       ret = clock_increase_after_periodic_timer_first_tick();
+       if (ret)
+               return ret;
+
+       ret = clock_decrease_before_oneshot_timer_first_tick();
+       if (ret)
+               return ret;
+
+       ret = clock_decrease_before_periodic_timer_first_tick();
+       if (ret)
+               return ret;
+
+       return clock_decrease_after_periodic_timer_first_tick();
+}


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