[OpenAFS-devel] Re: [OpenAFS] 2.6 kernel support anytime soon?Workarounds?

[Douglas E. Engert]

Garrett Wollman wrote:
> 
> <<On Wed, 12 May 2004 14:13:53 -0500, "Douglas E. Engert" <deengert@anl.gov> said:
> 
> >  o  The need to trap the setgroups syscall is a problem that needs to be
> >    be addressed as newer kernels (Linux 2.6) will not allow this.
> 
> Not just Linux -- any reasonably modern SMP operating system is going
> to have similar problems (or at least, the alternative is an
> even-worse tangle of #ifdef spaghetti to manage the locking
> requirements for every operating system's credential implementation).
> 
> Thankfully, most systems passing the "reasonably modern" test have
> already had to implement some sort of extended credential mechanism,
> where MAC labels or something else.  Some of these mechanisms may not
> be sufficiently flexible to do what AFS needs, or may not be available
> in the standard version of the OS.  (In FreeBSD this is no problem;
> the MAC functionality comes standard and includes all of the hooks
> that AFS needs; I just have to get down to writing the code.)


I agree, now what about Linux 2.6? 

I gave a outline earlier today about shadowing the task_struct and 
group_info, but have not got any comments back on if this would work
or not.


> 
> -GAWollman

-- 

 Douglas E. Engert  <DEEngert@anl.gov>
 Argonne National Laboratory
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