From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <11bd6a246368ba74227977263f8030c5@quanstro.net>
To: 9fans@9fans.net
From: erik quanstrom <quanstro@quanstro.net>
Date: Sun, 15 Jun 2008 13:25:35 -0400
In-Reply-To: <28E627FF-EA71-4F0A-8146-AE73CC1C337C@mac.com>
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Subject: Re: [9fans] command line tool for storing / reading files on venti
Topicbox-Message-UUID: c0d56d20-ead3-11e9-9d60-3106f5b1d025

>> Aha. But this still does not terminate the vacfs, right ?
>
>
> Once you kill the script, you also kill the processes it created -
> that's what process groups are, remember?

incorrect.  the script exits, it is not killed.  for example

	; cat script
	#!/bin/rc
	rfork n
	sleep 1492&
	exit ''
	; script
	; ps -a|grep sleep
	quanstro       1519    0:00   0:00        8K Sleep    sleep 1492
	quanstro       1521    0:00   0:00      156K Pread    grep sleep

when the script exits, the channel is closed, since all
the writers are gone.  this means that when vacfs
read(2)'s from its 9p connection, it gets -1.  it is
conventional to exit at this point since no further
work may be done.

	; cat script
	#!/bin/rc
	rfork n
	ramfs
	exit ''
	; script
	; ps -a | grep ramfs
	quanstro       1860    0:00   0:00      156K Pread    grep ramfs

- erik