From mboxrd@z Thu Jan  1 00:00:00 1970
From: AKASHI Takahiro <takahiro.akashi@linaro.org>
Date: Wed, 27 Nov 2019 15:17:29 +0900
Subject: [U-Boot] [BUG] fs: fat: incorrect creation of files with
	Unicode file name
In-Reply-To: <cdbd9a40-4a7a-7d59-160c-c5918bee0877@gmx.de>
References: <cdbd9a40-4a7a-7d59-160c-c5918bee0877@gmx.de>
Message-ID: <20191127061727.GO22427@linaro.org>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 8bit
To: u-boot@lists.denx.de

On Wed, Nov 13, 2019 at 12:53:17AM +0100, Heinrich Schuchardt wrote:
> In the UEFI Shell I create a file with
> 
> FS0:\> echo привет_мир.текст > привет_мир.текст
> 
> FS0:\> ls
> Directory of: FS0:\
> 00/00/0000  00:00                  38  привет_мир.текст
> 
> The U-Boot console shows it correctly:
> 
> => ls scsi 0:1
>        38   привет_мир.текст
> 
> Now in Linux I mount the volume. ls shows an incorrect filename:
> 
> > ls /mnt
> 'пÑ'$'\302\200''ивеÑ'$'\302\202''_миÑ'$'\302\200''.Ñ'$'\302\202''екÑ'$'\302\201''Ñ'$'\302\202'
> 
> Now in Linux I create a file
> 
> # echo привет_мир.текст > /mnt/привет_мир.текст
> 
> U-Boot shows the file name incorrectly
> 
> => ls scsi 0:1
>        31   ?@825B_<8@.B5:AB
> 
> So U-Boot seems not to convert file names correctly to UTF-16 before saving.

No conversion from/to UTF-16 takes place at a long file name
entry in the current FAT file system.
If we implement this, it will end up with incompatibility
of (meta) data with existing media.

-Takahiro Akashi

> Best regards
> 
> Heinrich