From 9fd1e90a363755015b3b208306a7ea3ed3be1f2e Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sat, 9 Aug 2003 18:23:45 +0000
Subject: Test HAVE_UTIME, not HAVE_UTIMES. Prefer utime, since it works and
 utimes doesn't on some systems.

---
 lib/utimens.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 lib/utimens.c

diff --git a/lib/utimens.c b/lib/utimens.c
new file mode 100644
index 000000000..a8c147efc
--- /dev/null
+++ b/lib/utimens.c
@@ -0,0 +1,63 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* Written by Paul Eggert.  */
+
+/* derived from a function in touch.c */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "utimens.h"
+
+#if HAVE_UTIME_H
+# include <utime.h>
+#endif
+
+/* Some systems (even some that do have <utime.h>) don't declare this
+   structure anywhere.  */
+#ifndef HAVE_STRUCT_UTIMBUF
+struct utimbuf
+{
+  long actime;
+  long modtime;
+};
+#endif
+
+/* Set the access and modification time stamps of FILE to be
+   TIMESPEC[0] and TIMESPEC[1], respectively.  */
+
+int
+utimens (char const *file, struct timespec const timespec[2])
+{
+  /* There's currently no interface to set file timestamps with
+     nanosecond resolution, so do the best we can, discarding any
+     fractional part of the timestamp.  */
+#if HAVE_UTIME
+  struct utimbuf utimbuf;
+  utimbuf.actime = timespec[0].tv_sec;
+  utimbuf.modtime = timespec[1].tv_sec;
+  return utime (file, &utimbuf);
+#else
+  struct timeval timeval[2];
+  timeval[0].tv_sec = timespec[0].tv_sec;
+  timeval[0].tv_usec = timespec[0].tv_nsec / 1000;
+  timeval[1].tv_sec = timespec[1].tv_sec;
+  timeval[1].tv_usec = timespec[1].tv_nsec / 1000;
+  return utimes (file, timeval);
+#endif
+}
-- 
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