1 files changed, 55 insertions, 0 deletions
diff --git a/time/tst-settimeofday.c b/time/tst-settimeofday.c
new file mode 100644
index 0000000..2c7d0c5
--- /dev/null
+++ b/time/tst-settimeofday.c
@@ -0,0 +1,55 @@
+/* Test for settimeofday
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#include <support/check.h>
+#include <support/xtime.h>
+
+#define TIMESPEC_SEC_Y2038_OV 0x7FFFFFFF
+#define FUTURE_TIME (TIMESPEC_SEC_Y2038_OV - 10)
+
+static int
+do_test (void)
+{
+  const struct timeval tv = { FUTURE_TIME, 0};
+  struct timespec tv_future, tv_now;
+
+  /* Check if altering target time is allowed.  */
+  if (getenv (SETTIME_ENV_NAME) == NULL)
+    FAIL_UNSUPPORTED ("settimeofday is executed only when "\
+                      SETTIME_ENV_NAME" is set\n");
+
+  tv_now = xclock_now (CLOCK_REALTIME);
+  int ret = settimeofday (&tv, NULL);
+  if (ret == -1)
+    FAIL_EXIT1 ("settimeofday failed: %m\n");
+
+  tv_future = xclock_now (CLOCK_REALTIME);
+
+  /* Restore old time value on target machine.  */
+  xclock_settime (CLOCK_REALTIME, (const struct timespec*) &tv_now);
+
+  if (tv_future.tv_sec < tv.tv_sec)
+    FAIL_EXIT1 ("settimeofday set wrong time!\n");
+
+  return 0;
+}
+
+#include <support/test-driver.c>