Re: UTF-8 in file systems? xfs/extfs/etc.

[jw schultz <jw@pegasys.ws>]

On Mon, Feb 09, 2004 at 08:32:12PM -0800, Mike Fedyk wrote:
> On Mon, Feb 09, 2004 at 02:36:24PM +0100, Matthias Urlichs wrote:
> > Hi, Nico Schottelius wrote:
> > 
> > > What Linux supported filesystems support UTF-8 filenames?
> > 
> > Filenames, to the kernel, are a sequence of 8-bit things commonly
> > called "bytes" or "octets", excluding '/' and '\0'.
> > 
> 
> You can have "/" in the filename also, though that could be encoded somehow...

You might be able to have a non-ASCII character that looks
like / but not 0x2f.

I for one do not want open("/var/tpm/diddle", O_WRONLY | O_CREAT)
to create a file "tpm/diddle" in /var just because /var/tpm
doesn't exist.  Fortunately what happens is it fails with
ENOENT.

I expect UTF-8 to have no multi-byte sequences containing NUL
but it might be awkward if a multi-byte sequence contained
0x2F (/).  I would hope that the committees chose to avoid
using symbol and punctuation byte-codes for alphanumeric
sequences.


-- 
________________________________________________________________
	J.W. Schultz            Pegasystems Technologies
	email address:		jw@pegasys.ws

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