>From 5141074863eee7a8dbb76921aa1f406cb7168dee Mon Sep 17 00:00:00 2001
From: Colin Watson <address@hidden>
Date: Wed, 24 Sep 2014 13:09:50 +0100
Subject: [PATCH] utimens: handle lack of UTIME_* on GNU/Hurd

The Hurd has futimens, but does not currently support
UTIME_NOW/UTIME_OMIT (https://bugs.debian.org/762677).  Resolve these to
real timestamps if necessary.

Although the lutimens function is structured similarly, it does not need
the same change because the Hurd does not have utimensat, so it will
always fall back to other methods after calling update_timespec.
---
 lib/utimens.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/utimens.c b/lib/utimens.c
index dd3ec66..2d0e9f6 100644
--- a/lib/utimens.c
+++ b/lib/utimens.c
@@ -243,6 +243,18 @@ fdutimens (int fd, char const *file, struct timespec const timespec[2])
           adjustment_needed++;
         }
 # endif
+# ifdef __GNU__
+      /* Work around lack of UTIME_NOW/UTIME_OMIT support:
+         <https://bugs.debian.org/762677>.  */
+      if (adjustment_needed > 0)
+        {
+          if (fd < 0 ? stat (file, &st) : fstat (fd, &st))
+            return -1;
+          update_timespec (&st, &ts);
+          /* Note that st is good, in case futimens gives ENOSYS.  */
+          adjustment_needed = 3;
+        }
+# endif
 # if HAVE_UTIMENSAT
       if (fd < 0)
         {
-- 
2.1.0