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Unprivileged Subhurds

From: Justus Winter
Subject: Unprivileged Subhurds
Date: Wed, 12 Nov 2014 16:49:07 +0100


I'm trying to get unprivileged Subhurds to work.  The first part of
the puzzle is in fact a tiny kernel patch to provide a robust parental
relationship of tasks to userspace.  Currently, /hurd/proc relies on
posixesque processes to call proc_child to form a process hierarchy.

I've written about these notifications back in my gsoc days:


I've got a patched up proc server and a boot program that do boot a
non-privileged Subhurd.  It actually bootstraps the core Hurd servers,
and starts `runsystem', but then the Subhurds proc server crashes.

Overall it's looking good, time to get the discussion going.


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