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Date:      Tue, 11 Sep 2012 21:55:34 -1000
From:      Doug Barton <dougb@FreeBSD.org>
To:        Ian Lepore <freebsd@damnhippie.dyndns.org>
Cc:        Arthur Mesh <arthurmesh@gmail.com>, freebsd-rc@FreeBSD.ORG, Peter Jeremy <peter@rulingia.com>, obrien@FreeBSD.ORG, freebsd-security@FreeBSD.ORG, RW <rwmaillists@googlemail.com>, =?ISO-8859-1?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no>, Xin Li <delphij@delphij.net>
Subject:   Re: svn commit: r239569 - head/etc/rc.d
Message-ID:  <50503FF6.4050605@FreeBSD.org>
In-Reply-To: <1347373256.1137.52.camel@revolution.hippie.lan>
References:  <50451D6E.30401@FreeBSD.org> <20120903214638.GO1464@x96.org> <50453686.9090100@FreeBSD.org> <20120904220754.GA3643@server.rulingia.com> <20120906174247.GB13179@dragon.NUXI.org> <20120906230157.5307a21f@gumby.homeunix.com> <20120906224703.GD89120@x96.org> <20120907015157.GA29497@server.rulingia.com> <20120910135218.GA68128@dragon.NUXI.org> <867gs2hqtt.fsf@ds4.des.no> <20120911054608.GA72584@dragon.NUXI.org> <1347373256.1137.52.camel@revolution.hippie.lan>

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On 09/11/2012 04:20 AM, Ian Lepore wrote:
> On Mon, 2012-09-10 at 22:46 -0700, David O'Brien wrote:
>>
>>> -r just changes the sort order, which is probably pointless.
>>
>> I'm not wedded to "-r", but since you're proposing this to not use "-r",
>> which Ian Lepore suggested after instrumenting /etc/rc.d/initrandom and
>> looking at the output, please show a diff of two boots with "-r" and
>> without "-r" so can see what the change really is.
>>
> 
> I observed that the order of displayed processes could differ from one
> reboot to the next, even on an embedded system where little else
> differed.  It seemed to me that a difference in order, while small,
> might be significant.

Yes, even small changes that early in the process help with the replay
scenario, even if they don't feed a large amount of unique entropy into
the device.

Doug




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