Re: [RFC] FS charset conversions

From: Alexander Viro (viro@math.psu.edu)
Date: Tue Nov 05 2002 - 07:25:28 EST


On Tue, 5 Nov 2002, Samium Gromoff wrote:

> The problem root lies in the fact in some languages (notably russian)
> there is more then one widely used charset. In russian for example
> there are koi8-r, iso8859-5, cp866 and the infamous but widely used
> ms cp1251.
>
> Once you need to have access to some data with names using the second
> half of the ascii table the trouble arises. For example the situation
> i have here is that smbd provides the public share and people creates
> there some files originating with the cp1251 encoding. Myself having
> koi8-r as the system default charset naturally observe crap.
>
> The proposed and seemingly natural solution is to add a possibility
> to mount --bind the subtree with a filename charset conversion applied.

Will not work. Bindings do _NOT_ create extra superblock/dentry tree/etc.
and they are invisible to filesystem. E.g. to ->readdir().

(besides, filesystems playing with case conversions are bad enough, now
let's VFS try charset ones?)

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