Date: Mon, 24 Jun 2002 15:33:17 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Terry Lambert <tlambert2@mindspring.com> Cc: Harry Newton <harry_newton@telinco.co.uk>, freebsd-hackers@FreeBSD.ORG Subject: Re: status of portalfs Message-ID: <200206242233.g5OMXHl8000378@apollo.backplane.com> References: <86adpkih9j.fsf@basilisk.locus> <3D179464.4538513D@mindspring.com>
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Actually Terry is wrong here :-) Sorry Terry. The portal filesystem
is not really a filesystem. All it can do is intercept open()s and
return descriptors. It isn't like NULLFS. The portal filesystem
does not do any layering at all. open() does not return a portalfs
descriptor.
What portalfs does is connect to a unix domain socket (aka a userland
process) and then it expects a control message to sent to it with
a descriptor (like to a normal file or a TCP socket or whatever). It
then returns the descriptor directly.
-Matt
Matthew Dillon
<dillon@backplane.com>
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