Re: [PATCH 2.6.18-rc1] Make group sorting optional in the 2.6.x kernels

[Frank van Maarseveen]

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@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/