Re: [uml-devel] hostfs as root

[BlaisorBlade <blaisorblade_spam@yahoo.it>]

Alle 20:39, venerdì 5 settembre 2003, Michael Richardson ha scritto:

>     >> If you have a simple /sbin/mount that you can recommend that solves
>     >> my problem, I will consider using it.
>
>     Matt> The fact that you said it broke _potato_'s mount, specifically,
> led Matt> me to believe that newer versions did not do this (they do).
>
>   Ah, so your fix basically breaks all distros? I have no idea.
>   Then clearly it needs to be fixed in the kernel, don't you think?
>
>     Matt> However, the fix to mount is trivial, so you can easily create an
>     Matt> /sbin/mount which should work.
>
>   I think that removing your patch is a better idea. Find another way to
> make tar happy.
>
>   Booting the system is pretty important.
I think that since anyway there is not a permission layer, you shouldn't boot 
off an hostfs filesystem. Mount with -o loop a new file, then copy all the 
filesystem content. Or maybe(but ask to other developers/check docs) if you 
have a whole partition, say ubd0=/dev/<your part> to UML. With hostfs, 
anyway, if you don't run the guest with root privileges, files created by 
root will be owned by the user running the Uml(i.e. it can happen that 
everything works, especially if you login in the Uml only with a uid=<uid of 
Uml on the host>, but not everything will work), while root won't have access 
to certain files(you can avoid also this, by not putting in that hierarchy 
any file of root from the host).

-- 
cat <<EOSIGN
Paolo Giarrusso, aka Blaisorblade
Linux Kernel 2.4.21/2.6.0-test on an i686; Linux registered user n. 292729
EOSIGN



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