Date: Mon, 03 Apr 2006 12:40:53 -0700 From: Julian Elischer <julian@elischer.org> To: Robert Watson <rwatson@freebsd.org> Cc: freebsd-stable@freebsd.org, freebsd-current@freebsd.org, pjd@freebsd.org Subject: Re: new feature: private IPC for every jail Message-ID: <44317A45.9000504@elischer.org> In-Reply-To: <20060403163220.F36756@fledge.watson.org> References: <20060403003318.K947@ganymede.hub.org> <20060403163220.F36756@fledge.watson.org>
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Robert Watson wrote: > > On Mon, 3 Apr 2006, Marc G. Fournier wrote: > >> http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/48471 >> >> [kernel] [patch] new feature: private IPC for every jail >> >> Its an ancient, 4.x patch for having private IPC in a jail ... not >> sure how hard it would be to bring it up to 6.x / -current standards >> though ... but it seems like something 'good' that is needed ... > > > In the past I've looked at doing things along these lines, but usually > stall after a first hack when trying to decide how to deal with two > critical issues: > > (1) The fact that system v ipc primitives are loadable, and > unloadable, which > requires some careful handling relating to registration order, etc. this is related to the problem that needs to be solved for getting vimage into -current. > > (2) The name space model for system v ipc is flat, so while it's > desirable to > allow the administrator in the host environment to monitor and > control > resource use in the jail (for example, delete allocated but unused > segments), doing that requires developing an administrative model > for it. it is possible the admin environment can't see it. unless you prefix it with something.. > > These challenges can be surmounted, but the doing them in a nice way > requires some thought. > > Robert N M Watson > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to > "freebsd-current-unsubscribe@freebsd.org"
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