On Fri, 1 Dec 2006, Steven Hartland wrote:
In essence, this would move to having two reference counts on the prison: a
"strong" reference that has to do with having process members, and a "weak"
reference that has to do with ucreds pointing at the prison.
The proposal sounds like a good idea but I'm sure there's an argument that
would say thats just hiding the real underlieing issue?
Well, there are two things going on here:
(1) Jails that last a long time due to being referenced by data structures
that last a long time. I.e., time-wait TCP connections.
(2) Leaks in credentials or jails resulting in jails that never go away.
What I describe is intended to address the former issue, which is one that
exists for a reason. The latter issues are clearly bugs and just need to be
fixed.
Robert N M Watson
Computer Laboratory
University of Cambridge
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