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Message-ID: <20060720093557.GA1796@janus> Date: Thu, 20 Jul 2006 11:35:57 +0200 From: Frank van Maarseveen <frankvm@...nkvm.com> To: Bill Ryder <bryder@...afx.co.nz> Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH 2.6.18-rc1] Make group sorting optional in the 2.6.x kernels On Thu, Jul 20, 2006 at 08:17:47AM +1200, Bill Ryder wrote: [...] > As an aside Frank - can you point at a paper which provides a > walkthrough of how your patch works and what the caveats are? http://www.frankvm.com/nfs-ngroups/README > For example > > /top(0)/p1(2)/p3(2)/p4(2)/p5(6)/file1(6) > /top(0)/p1(2)/p3(2)/p4(2)/p6(7)/file2(7) > /top(0)/p1(2)/p3(2)/p4(2)/p7(8)/file3(6) > /top(0)/p1(2)/p3(2)/p4(2)/p7(8)/file4(8) > > And so on - where the (n) indicated the (gid) for that directory/file. > So most of our directories are in the same group. But as you get further > down the tree the groups start to change. > > The process will belong to > 16 groups. setgroups() require privilege. I don't understand how the above is supposed to work for non-root users needing >16 groups. And when you're root it is silly to play these group games for getting access. -- Frank - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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