linux-kernel - Re: Linux & FAT32 label

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Message-ID: <20171109090145.lffuluwm3sxanfzu@pali>
Date:   Thu, 9 Nov 2017 10:01:45 +0100
From:   Pali Rohár <pali.rohar@...il.com>
To:     Theodore Ts'o <tytso@....edu>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Andreas Bombe <aeb@...ian.org>, Karel Zak <kzak@...hat.com>,
        util-linux@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Andrius Štikonas <andrius@...konas.eu>,
        Curtis Gedak <gedakc@...il.com>, pavel@....cz
Subject: Re: Linux & FAT32 label

On Tuesday 07 November 2017 12:28:41 Theodore Ts'o wrote:
> On Sun, Nov 05, 2017 at 10:12:49PM +0100, Pali Rohár wrote:
> > Easy way how to achieve this situation:
> > 
> > 1. use mkdosfs to format hard disk to FAT32 with label LABEL42
> > 
> > 2. boot Windows 10 (or XP) and set label of that FAT32 partition to
> > empty (via Explorer GUI)
> > 
> > 3. profit
> > 
> > You would have stored LABEL42 in boot sector and no label in root
> > directory. Windows handle this situation as there is no label.
> 
> But why should we *care*?

FAT is Microsoft's filesystem and the only usage of it on Linux is due
to interoperability with different non-Linux systems. So here we should
implement FAT in the similar/same way as other systems. It does not make
sense to implement it differently and specially in non-compatible way.
Because it lost reason what is primary usage of the FAT on Linux.

-- 
Pali Rohár
pali.rohar@...il.com