X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Futimens.c;h=e12821962c6927bca06849810718a629b8c2b98c;hb=95454b6b2dbb9f57bf5623a0fd8d40fb2433c4d7;hp=11f04d1ad8ded81b93565d87435dfebea1c566f7;hpb=6832fe5cd41b49e15107f0106e6a55ee8c90f525;p=gnulib.git

diff --git a/lib/utimens.c b/lib/utimens.c
index 11f04d1ad..e12821962 100644
--- a/lib/utimens.c
+++ b/lib/utimens.c
@@ -1,10 +1,11 @@
 /* Set file access and modification times.
 
-   Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Free Software
+   Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify it
+   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
+   Free Software Foundation; either version 3 of the License, or any
    later version.
 
    This program is distributed in the hope that it will be useful,
@@ -13,21 +14,19 @@
    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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Written by Paul Eggert.  */
 
 /* derived from a function in touch.c */
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
 #include "utimens.h"
 
 #include <errno.h>
 #include <fcntl.h>
+#include <sys/time.h>
 #include <unistd.h>
 
 #if HAVE_UTIME_H
@@ -54,8 +53,10 @@ struct utimbuf
 # endif
 #endif
 
-#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
-# define __attribute__(x)
+#ifndef __attribute__
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8)
+#  define __attribute__(x)
+# endif
 #endif
 
 #ifndef ATTRIBUTE_UNUSED
@@ -73,9 +74,26 @@ struct utimbuf
    Return 0 on success, -1 (setting errno) on failure.  */
 
 int
-futimens (int fd ATTRIBUTE_UNUSED,
-	  char const *file, struct timespec const timespec[2])
+gl_futimens (int fd ATTRIBUTE_UNUSED,
+	     char const *file, struct timespec const timespec[2])
 {
+  /* Some Linux-based NFS clients are buggy, and mishandle time stamps
+     of files in NFS file systems in some cases.  We have no
+     configure-time test for this, but please see
+     <http://bugs.gentoo.org/show_bug.cgi?id=132673> for references to
+     some of the problems with Linux 2.6.16.  If this affects you,
+     compile with -DHAVE_BUGGY_NFS_TIME_STAMPS; this is reported to
+     help in some cases, albeit at a cost in performance.  But you
+     really should upgrade your kernel to a fixed version, since the
+     problem affects many applications.  */
+
+#if HAVE_BUGGY_NFS_TIME_STAMPS
+  if (fd < 0)
+    sync ();
+  else
+    fsync (fd);
+#endif
+
   /* 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.  */
@@ -166,5 +184,5 @@ futimens (int fd ATTRIBUTE_UNUSED,
 int
 utimens (char const *file, struct timespec const timespec[2])
 {
-  return futimens (-1, file, timespec);
+  return gl_futimens (-1, file, timespec);
 }