Re: [uml-devel] Re: Patch for buffer overrun in serial/console device logic

[Jeff Dike <jdike@addtoit.com>]

doug@easyco.com said:
> The code itself involves a lot of extra parameters from kernel to user
>  space as things like the current user aren't propogated down.  I
> personally think that our current patch set is "100% ugly" and would
> not  consider posting it as-is.  If people are interested in
> transparent  numeric UID/GID to hostfs, then I would be happy to clean
> up what we  have and submit it. 

OK, that ain't the way to do it.  Anything that involves passing a parallel
set of creds through VFS will cause Al Viro to lop my head off.  Since I'm
somewhat attached to it, I will not propose such a thing, no matter how cleaned
up it is.

What would work is to store the creds in a separate container of some sort
on the host, and reference that inside hostfs when doing permission checks.

This is more or less what UMSDOS does, from what I understand, and it keeps
the nastiness contained within hostfs.

That journalling is a neat idea, BTW.

				Jeff



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