UFS label limitations

[Jaakko Heinonen]

Hi,

On 2008-12-13, Rick C. Petty wrote:
> I applied the attached (inline) patch and have had no troubles creating,
> editing, or mounting via UFS labels.  The patch allows you to create
> labels with any characters except '/' (for obvious reasons) and should
> work with most locales (with the tiny exception that multibyte characters
> which use 0x2F in subsequent bytes should be rejected, since geom_label
> is locale-agnostic).

geom_label has problems with other characters too. The problem is that
it doesn't encode characters for XML output properly. See these PRs:

	http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/104389
	http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/120044

This already causes problems with file systems which allow non-ASCII
label names. IMO the problem should be addressed before extending
allowed characters in UFS labels.

-- 
Jaakko