Path: utzoo!mnetor!uunet!husc6!cmcl2!brl-adm!brl-smoke!gwyn
From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: comp.unix.wizards
Subject: Re: //host vs "mount point"
Message-ID: <6817@brl-smoke.ARPA>
Date: 13 Dec 87 15:18:37 GMT
References: <648@tut.cis.ohio-state.edu> <1668@tut.cis.ohio-state.edu> <38c15248.4580@hi-csc.UUCP> <9559@mimsy.UUCP> <411@PT.CS.CMU.EDU> <6769@brl-smoke.ARPA> <2312@encore.UUCP>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) )
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 16

In article <2312@encore.UUCP> loverso@encore.UUCP (John LoVerso) writes:
>	% cd /../..
>	% pwd
>	/../..
>	% cd bin
>	% pwd
>	/bin

Someone explained to me how at least one of these systems works;
in theirs, the kernel was keeping track and the first chdir("..")
from the root actually followed the link (which was "rejigged" to
get to a directory of network machine portals) but a subsequent
and all following consecutive chdir("..")s would get to the root
"/" of the original system.  This made the usual "pwd" algorithms
continue to report the "right" thing, but although useful it's
obviously very warty.