1 files changed, 90 insertions, 0 deletions
diff --git a/regress/lib/libc/sys/t_gettimeofday.c b/regress/lib/libc/sys/t_gettimeofday.c
new file mode 100644
index 00000000000..de768b023ae
--- /dev/null
+++ b/regress/lib/libc/sys/t_gettimeofday.c
@@ -0,0 +1,90 @@
+/*	$OpenBSD: t_gettimeofday.c,v 1.1.1.1 2019/11/19 19:57:03 bluhm Exp $	*/
+/* $NetBSD: t_gettimeofday.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jukka Ruohonen.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "macros.h"
+
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: t_gettimeofday.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $");
+
+#include <sys/time.h>
+
+#include "atf-c.h"
+#include <errno.h>
+#include <string.h>
+
+ATF_TC(gettimeofday_err);
+ATF_TC_HEAD(gettimeofday_err, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test errors from gettimeofday(2)");
+}
+
+ATF_TC_BODY(gettimeofday_err, tc)
+{
+
+	errno = 0;
+
+	ATF_REQUIRE_ERRNO(EFAULT, gettimeofday((void *)-1, NULL) != 0);
+}
+
+ATF_TC(gettimeofday_mono);
+ATF_TC_HEAD(gettimeofday_mono, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test monotonicity of gettimeofday(2)");
+}
+
+ATF_TC_BODY(gettimeofday_mono, tc)
+{
+	static const size_t maxiter = 100;
+	struct timeval tv1, tv2;
+	size_t i;
+
+	for (i = 0; i < maxiter; i++) {
+
+		(void)memset(&tv1, 0, sizeof(struct timeval));
+		(void)memset(&tv2, 0, sizeof(struct timeval));
+
+		ATF_REQUIRE(gettimeofday(&tv1, NULL) == 0);
+		ATF_REQUIRE(gettimeofday(&tv2, NULL) == 0);
+
+		if (timercmp(&tv2, &tv1, <) != 0)
+			atf_tc_fail("time went backwards");
+	}
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, gettimeofday_err);
+	ATF_TP_ADD_TC(tp, gettimeofday_mono);
+
+	return atf_no_error();
+}