--- /dev/null
+#ifndef _SYS_TIME_H
+#define _SYS_TIME_H
+
+/** @file
+ *
+ * Date and time
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+
+/** Seconds since the Epoch
+ *
+ * We use a 64-bit type to avoid Y2K38 issues, since we may have to
+ * handle distant future dates (e.g. X.509 certificate expiry dates).
+ */
+typedef int64_t time_t;
+
+#endif /* _SYS_TIME_H */