linux-kernel - Re: [malware-list] scanner interface proposal was: [TALPA] Intro to a linux interface for on access scanning

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Message-ID: <20080818195126.7192e34e@lxorguk.ukuu.org.uk>
Date:	Mon, 18 Aug 2008 19:51:26 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Eric Paris <eparis@...hat.com>
Cc:	davecb@....com, david@...g.hm, Adrian Bunk <bunk@...nel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	malware-list@...ts.printk.net,
	Casey Schaufler <casey@...aufler-ca.com>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [malware-list] scanner interface proposal was: [TALPA]	Intro	to
 a linux interface for on access scanning

> Also not knowing much about sending FD's over AF_UNIX sockets, do they
> share the same seek offsets or does the new process get a new fd which

They share the seek offset.

> points to the same data?  I wouldn't want to have to count on the
> indexer to not move the offset around on the bittorrent client.  Like I
> said, haven't never used sendmsg to pass a socket I don't know what you
> get on the other end.

man pread(). The posix committee long ago figured out that you needed a
sane way not to get involved with offsets even between processes or in
threaded apps.

Alan
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