add legacy ftime function and sys/timeb.h

despite being marked legacy, this was specified by SUSv3 as part of
the XSI option; only the most recent version of the standard dropped
it. reportedly there's actual code using it.

2 files changed, 34 insertions, 0 deletions

diff --git a/include/sys/timeb.h b/include/sys/timeb.h
new file mode 100644
index 00000000..108c1f5c
--- /dev/null
+++ b/include/sys/timeb.h
@@ -0,0 +1,22 @@
+#ifndef _SYS_TIMEB_H
+#define _SYS_TIMEB_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define __NEED_time_t
+
+#include <bits/alltypes.h>
+
+struct timeb {
+	time_t time;
+	unsigned short millitm;
+	short timezone, dstflag;
+};
+
+int ftime(struct timeb *);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/src/time/ftime.c b/src/time/ftime.c
new file mode 100644
index 00000000..a1734d0f
--- /dev/null
+++ b/src/time/ftime.c
@@ -0,0 +1,12 @@
+#include <sys/timeb.h>
+#include <time.h>
+
+int ftime(struct timeb *tp)
+{
+	struct timespec ts;
+	clock_gettime(CLOCK_REALTIME, &ts);
+	tp->time = ts.tv_sec;
+	tp->millitm = ts.tv_nsec / 1000000;
+	tp->timezone = tp->dstflag = 0;
+	return 0;
+}