From ad87c2eecf70c6f2852a4908b04a6329cbebaf7d Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Wed, 5 Feb 2014 16:34:23 -0500
Subject: [PATCH] add nonstandard timespec/timeval conversion macros in
 sys/time.h

these are poorly designed (illogical argument order) and even poorly
implemented (brace issues) on glibc, but unfortunately some software
is using them. we could consider removing them again in the future at
some point if they're documented as deprecated, but for now the
simplest thing to do is just to provide them under _GNU_SOURCE.
---
 include/sys/time.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/sys/time.h b/include/sys/time.h
index b6787c3c..bfe1414e 100644
--- a/include/sys/time.h
+++ b/include/sys/time.h
@@ -51,6 +51,17 @@ int adjtime (const struct timeval *, struct timeval *);
 	((a)->tv_usec += 1000000, (a)->tv_sec--) )
 #endif
 
+#if defined(_GNU_SOURCE)
+#define TIMEVAL_TO_TIMESPEC(tv, ts) ( \
+	(ts)->tv_sec = (tv)->tv_sec, \
+	(ts)->tv_nsec = (tv)->tv_usec * 1000, \
+	(void)0 )
+#define TIMESPEC_TO_TIMEVAL(tv, ts) ( \
+	(tv)->tv_sec = (ts)->tv_sec, \
+	(tv)->tv_usec = (ts)->tv_nsec / 1000, \
+	(void)0 )
+#endif
+
 #ifdef __cplusplus
 }
 #endif