Newsgroups: comp.protocols.nfs
Path: utzoo!utgpu!watserv1!watmath!att!linac!convex!thurlow
From: thurlow@convex.com (Robert Thurlow)
Subject: Re: Why not export /fs /fs/subdir?
Message-ID: <thurlow.677535175@convex.convex.com>
Sender: usenet@convex.com (news access account)
Nntp-Posting-Host: dhostwo.convex.com
Organization: CONVEX Computer Corporation, Richardson, Tx., USA
References: <SHIRONO.91Jun17112649@gcx1.ssd.csd.harris.com> <1991Jun17.224716.4729@Think.COM> <thurlow.677210173@convex.convex.com> <1991Jun18.040038.15141@Think.COM>
Date: Fri, 21 Jun 1991 20:12:55 GMT
Lines: 21

In <1991Jun18.040038.15141@Think.COM> barmar@think.com (Barry Margolin) writes:

>What do vnodes have to do with anything?  My point about "fake NFS
>requests" was that a user-written program could send the following RPC
>operations (I'm using pseudocode, not precise representations of the
>procedure calls):

>	mount_handle = Mount("/export/root/foo");
>	outer_handle = Lookup(mount_handle, "..");
>	bar_handle = Lookup(outer_handle, "bar");

Barry, a Sun-based client won't send such lookups to a server, but will
interpret the ".." with respect to its own virtual filesystems, and a
Sun-based server will interpret such lookups as if you'd really asked
about ".".  Have you tried this anywhere and had it give you access to
other filesystems?  I'd call systems like that "broken".

Rob T
--
Rob Thurlow, thurlow@convex.com
An employee and not a spokesman for Convex Computer Corp., Dallas, TX
