From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Kerrisk <mtk.manpages@googlemail.com>
Subject: [parch 1/4] vfs: utimensat(): ignore tv_sec if tv_nsec == UTIME_OMIT
 or UTIME_NOW
Date: Wed, 04 Jun 2008 00:24:52 +0200
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Cc: lkml <linux-kernel@vger.kernel.org>,
	Christoph Hellwig <hch@lst.de>,
	Miklos Szeredi <miklos@szeredi.hu>,
	Al Viro <viro@zeniv.linux.org.uk>, jamie@shareable.org,
	Ulrich Drepper <drepper@redhat.com>,
	linux-fsdevel@vger.kernel.org,
	Subrata Modak <subrata@linux.vnet.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
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The POSIX.1 draft spec for utimensat() says that if a times[n].tv_nsec
field is UTIME_OMIT or UTIME_NOW, then the value in the corresponding
tv_sec field is ignored.  However the current Linux implementation
requires the tv_sec value to be zero (or the EINVAL error results).
This requirement should be removed.

CC: Miklos Szeredi <miklos@szeredi.hu>
CC: Al Viro <viro@zeniv.linux.org.uk>
CC: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

--- linux-2.6.26-rc4/fs/utimes.c	2008-06-03 22:43:15.000000000 +0200
+++ linux-2.6.26-rc4-utimensat-fix-v4/fs/utimes.c	2008-06-03 22:41:50.000000000 +0200
@@ -169,14 +169,6 @@
 	if (utimes) {
 		if (copy_from_user(&tstimes, utimes, sizeof(tstimes)))
 			return -EFAULT;
-		if ((tstimes[0].tv_nsec == UTIME_OMIT ||
-		     tstimes[0].tv_nsec == UTIME_NOW) &&
-		    tstimes[0].tv_sec != 0)
-			return -EINVAL;
-		if ((tstimes[1].tv_nsec == UTIME_OMIT ||
-		     tstimes[1].tv_nsec == UTIME_NOW) &&
-		    tstimes[1].tv_sec != 0)
-			return -EINVAL;

 		/* Nothing to do, we must not even check the path.  */
 		if (tstimes[0].tv_nsec == UTIME_OMIT &&