Test for monotonically increasing timeofday.

2 files changed, 36 insertions, 0 deletions

diff --git a/regress/sys/kern/gettimeofday/Makefile b/regress/sys/kern/gettimeofday/Makefile
new file mode 100644
index 00000000000..72706202f99
--- /dev/null
+++ b/regress/sys/kern/gettimeofday/Makefile
@@ -0,0 +1,5 @@
+#	$OpenBSD: Makefile,v 1.1 2002/02/21 09:21:30 nordin Exp $
+
+PROG=	gettimeofday
+
+.include <bsd.regress.mk>
diff --git a/regress/sys/kern/gettimeofday/gettimeofday.c b/regress/sys/kern/gettimeofday/gettimeofday.c
new file mode 100644
index 00000000000..b27d16f9c0a
--- /dev/null
+++ b/regress/sys/kern/gettimeofday/gettimeofday.c
@@ -0,0 +1,31 @@
+/*	$OpenBSD: gettimeofday.c,v 1.1 2002/02/21 09:21:30 nordin Exp $	*/
+/*
+ *	Written by Thomas Nordin <nordin@openbsd.org> 2002 Public Domain.
+ */
+#include <err.h>
+#include <stdio.h>
+
+#include <sys/time.h>
+
+int
+main()
+{
+	struct timeval s;
+	struct timeval t1;
+	struct timeval t2;
+
+	if (gettimeofday(&s, NULL) == -1)
+		err(1, "gettimeofday");
+
+	do {
+		if (gettimeofday(&t1, NULL) == -1)
+			err(1, "gettimeofday");
+		if (gettimeofday(&t2, NULL) == -1)
+			err(1, "gettimeofday");
+
+		if (timercmp(&t2, &t1, <))
+			errx(1, "time of day decreased");
+        } while (t1.tv_sec - s.tv_sec < 7);
+
+        return 0;
+}