From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <5b42f3047db318b115c3e3bbb237a45e@terzarima.net>
From: Charles Forsyth <forsyth@terzarima.net>
Date: Sun, 19 Apr 2009 00:31:40 +0100
To: 9fans@9fans.net
In-Reply-To: <13426df10904181037k6b5b71dawe13a5ca1e08a8cd0@mail.gmail.com>
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Subject: Re: [9fans] Plan9 - the next 20 years
Topicbox-Message-UUID: e7d99abc-ead4-11e9-9d60-3106f5b1d025

this discussion of checkpoint/restart reminds me of
a hint i was given years ago: if you wanted to break into a system,
attack through the checkpoint/restart system. i won a jug of
beer for my subsequent successful attack which involved patching
the disc offset for an open file in a copy of the Slave Service Area saved
by the checkpoint; with the offset patched to zero, the newly restored process
could read the file and dump the users and passwords conveniently stored in the clear at
the start of the system area of the system disc.  the hard bit was
writing the code to dump the data in a tidy way.