From 10cf9b5e371bc4927b2b28354c19b62943dfe95e Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 6 Aug 2004 22:30:35 +0000
Subject: [PATCH] Import from coreutils.

---
 lib/utimens.c   | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 lib/utimens.h   |  2 ++
 m4/utimens.m4   | 15 ++++++++++++++
 modules/utimens | 24 ++++++++++++++++++++++
 4 files changed, 104 insertions(+)
 create mode 100644 lib/utimens.c
 create mode 100644 lib/utimens.h
 create mode 100644 m4/utimens.m4
 create mode 100644 modules/utimens

diff --git a/lib/utimens.c b/lib/utimens.c
new file mode 100644
index 000000000..9f1a0e116
--- /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_WORKING_UTIMES
+  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);
+#else
+  struct utimbuf utimbuf;
+  utimbuf.actime = timespec[0].tv_sec;
+  utimbuf.modtime = timespec[1].tv_sec;
+  return utime (file, &utimbuf);
+#endif
+}
diff --git a/lib/utimens.h b/lib/utimens.h
new file mode 100644
index 000000000..a36f27da9
--- /dev/null
+++ b/lib/utimens.h
@@ -0,0 +1,2 @@
+#include "timespec.h"
+int utimens (char const *, struct timespec const [2]);
diff --git a/m4/utimens.m4 b/m4/utimens.m4
new file mode 100644
index 000000000..8912619e1
--- /dev/null
+++ b/m4/utimens.m4
@@ -0,0 +1,15 @@
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_UTIMENS],
+[
+  dnl Prerequisites of lib/utimens.c.
+  AC_REQUIRE([gl_TIMESPEC])
+  AC_REQUIRE([gl_FUNC_UTIMES])
+  AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
+  AC_REQUIRE([gl_CHECK_TYPE_STRUCT_UTIMBUF])
+])
diff --git a/modules/utimens b/modules/utimens
new file mode 100644
index 000000000..7196ef782
--- /dev/null
+++ b/modules/utimens
@@ -0,0 +1,24 @@
+Description:
+Set file access and modification times.
+
+Files:
+lib/utimens.h
+lib/utimens.c
+m4/utimens.m4
+m4/utimes.m4
+
+Depends-on:
+timespec
+
+configure.ac:
+gl_UTIMENS
+
+Makefile.am:
+lib_SOURCES += utimens.h utimens.c
+
+Include:
+"utimens.h"
+
+Maintainer:
+Paul Eggert, Jim Meyering
+
-- 
2.11.0