[Unionfs] Re: 2.6.26-rc4: smack and unionfs deadlock

[Casey Schaufler]

Luiz Fernando N. Capitulino wrote:
> | >  Casey, I'm afraid that only Erez (unionfs maintainer)
> | > can answer you here but it seems that he's away or
> | > something.
> | >
> | >  His last message on unionfs ML dates about one month
> | > back.
> | >
> | >  :(
> | Ok. Here's a temporary patch that makes everything except looking at
> | the Smack label work properly. I haven't signed it off because I
> | don't think it's ready for prime-time, but if the problem is holding
> | anyone up it will allow them to proceed.
>
>  Passed basic tests.
>
>  Does the problem with the Smack label only happen for unionfs
> mounts?
>   

Unionfs is the only case were I've seen this problem,
but of course seeing it here leads me to think I really
ought to be looking hard for issues like this. I fear
that there may be locking or other behaviors that have
undesired consequences in nested file systems that I
honestly haven't gotten to trying.

Thank you.

-- 

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Casey Schaufler
casey at schaufler-ca.com
650.906.1780