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Date: Wed, 09 Sep 2009 10:47:47 +0300
From: Jörg Schummer <ext-jorg.2.schummer@...ia.com>
To: ext Jamie Lokier <jamie@...reable.org>
Cc: "hirofumi@...l.parknet.co.jp" <hirofumi@...l.parknet.co.jp>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH take 3][RFC] fat: Save FAT root directory timestamps to
volume label
On Tue, 2009-09-08 at 17:39 +0200, ext Jamie Lokier wrote:
> Jorg Schummer wrote:
> > Standard FAT implementations cannot store any of the FAT root directory's
> > timestamps. This commit adds the mount option 'rootts', which allows saving
> > the FAT root directory timestamps as the timestamps of the FAT volume label
> > directory entry. At least Mac OS X is known to support the same mechanism
> > and interoperate with this commit.
> >
> > When mounting, the following values can be specified for the 'rootts' mount
> > option:
> >
> > "rootts=ignore" ignores root directory timestamps. All timestamps are
> > reset to 0 (1/1/1970). This has been the FAT behaviour
> > prior to this patch.
> >
> > "rootts=preserve" tries to load and save the root directory's timestamps
> > if a volume label entry exists. The mtime and atime are
> > corrected based on root directory entries' ctime. This
> > is the default.
> >
> > "rootts=save" tries to load and save the root directory's timestamps.
> > The mtime and atime are corrected based on root
> > directory entries' ctime. If the root directory was
> > accessed but no volume label entry exists, the label
> > "NO NAME" is created.
>
> Does Mac OS X do the same "NO NAME" thing?
AFAIK: No. It only supports the general mechanism of storing / loading
the root dir timestamps to / from the volume label entry.
But feel free to re-check that one.
Jörg
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