linux-kernel - Re: [PATCH take 2][RFC] fat: Save FAT root directory timestamps to volume label

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Date:	Sat, 25 Jul 2009 14:48:25 +0900
From:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To:	Jorg Schummer <ext-jorg.2.schummer@...ia.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH take 2][RFC] fat: Save FAT root directory timestamps to volume label

Jorg Schummer <ext-jorg.2.schummer@...ia.com> writes:

> 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 is the default.
>
>   "rootts=load"     only tries to load the root directory's timestamps from
>                     a volume label entry when mounting.
>
>   "rootts=preserve" tries to load and save the root directory's timestamps
>                     if a volume label entry exists.
>
>   "rootts=save"     tries to load and save the root directory's timestamps.
>                     If the root directory was accessed but no volume label
>                     entry exists, the label "NO NAME" is created.

Looks like interesting hack. However, personally, I don't think I want
this, but I guess it can be only me.

Well, so, what is this for? If rootdir doesn't have timestamp, some app
is not working, or something?

Thanks.
-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
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