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From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
To: Phillip Susi <psusi@ubuntu.com>
Cc: linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: msdos filesystem ignores codepage argument?
Date: Mon, 29 Dec 2014 02:00:46 +0900	[thread overview]
Message-ID: <87zja7so8x.fsf@devron.myhome.or.jp> (raw)
In-Reply-To: <549DE622.6050504@ubuntu.com> (Phillip Susi's message of "Fri, 26 Dec 2014 17:50:10 -0500")

Phillip Susi <psusi@ubuntu.com> writes:

> I'm investigating a bug report about the msdos filesystem and the fact
> that it appears to ignore the codepage argument.  The user wants to
> use msdos instead of vfat to avoid adding long filenames to the fs and
> store the short filenames using code page 850.  I verified that when
> the on disk directory entry contains 0x8E, which is an umlouted A in
> cp850, but when mounting with mount -t msdos no matter what codepage I
> specify in -o, ls outputs the raw 0x8E rather than using the specified
> codepage to translate the on disk string to utf8.  The msdos
> filesystem refuses to accept the utf8 or iocharset options, so how do
> you get it to do correct translation using the specified codepage?

codepage option is to specify what codepage is used as on-disk encode in
FAT, not how convert to encoding to show. 

And msdos driver doesn't have the feature to encoding conversion between
on-disk and user (codepage is used only to upper/lower case conversion
basically).  IOW, msdos assumes the user and on-disk encodings are same.

> Also in the process I noticed some odd behavior of ls.  If I set my
> terminal to use cp850 and ls | cat, I see the umlouted A, but without
> piping the output through cat, it comes out as a question mark.  Why
> is that?

It is what "ls" does. Probably, following option will show raw string

	$ ls -N --show-control-chars

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

  reply	other threads:[~2014-12-28 17:00 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-26 22:50 msdos filesystem ignores codepage argument? Phillip Susi
2014-12-28 17:00 ` OGAWA Hirofumi [this message]
2014-12-28 22:13   ` Phillip Susi
2014-12-28 23:06     ` OGAWA Hirofumi
2014-12-29  0:51       ` Phillip Susi
2014-12-29  1:00         ` OGAWA Hirofumi

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