From mboxrd@z Thu Jan  1 00:00:00 1970
To: weigelt@metux.de, 9fans@9fans.net
Subject: Re: [9fans] command line tool for storing / reading files on venti
From: "Russ Cox" <rsc@swtch.com>
Date: Sat, 14 Jun 2008 13:51:45 -0400
In-Reply-To: <20080614130357.GA25092@nibiru.local>
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>> no, it doesn't.  on plan 9, when the shell script exits,
>> nothing will have vacfs mounted anymore, so vacfs
>> will get an eof on the 9p connection and exit.
>> that's why i put an rfork n in the script.
>
> aha, that's probably what the rfork call does ?

rfork n forks the name space, so that any changes
made by the script don't propagate out to the
parent process.  This means that (1) vacfs can
mount on /n/vac without any fear of bothering
some other instance of the script, and (2) when the
script exits, there will be no more references to
the mounted /n/vac and the kernel will unmount it.

If you want simple, you should run Plan 9.

> Meanwhile I've hacked up vacfs to give it an "autodie" mode.
> It means: automatically terminate if the last file has been
> closed. Seems to work, but now idea how stable it would be
> in production ;-o

In the time it took you to do that you could probably
have written unvac instead.

Russ