Date: Wed, 13 Aug 2008 17:37:22 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Eric Paris <eparis@redhat.com>
Cc: linux-kernel@vger.kernel.org, malware-list@lists.printk.net,
       andi@firstfloor.org, riel@redhat.com, greg@kroah.com, tytso@mit.edu,
       viro@ZenIV.linux.org.uk, arjan@infradead.org, peterz@infradead.org,
       hch@infradead.org
Subject: Re: TALPA - a threat model?  well sorta.
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On Wed, 13 Aug 2008 12:47:45 -0400
Eric Paris <eparis@redhat.com> wrote:

> On Wed, 2008-08-13 at 17:24 +0100, Alan Cox wrote:
> > > So, what is it that anti-malware companies do?  They scan files.  That's
> > > it. 
> > 
> > Good so lets instead have a discussion about making the file event
> > notification more scalable. That is the same thing I want for content
> > indexing. It is the same thing you want for certain kinds of smart
> > archiving, for on-line asynchronous backup and other stuff.
> > 
> > It ought to be a simple clean syscall interface.
> 
> Are you willing to make it blocking?  I'm not sure how to make what we
> have capable of assuring that the object you got a notification about is
> actually the object you are acting on.  Thoughts on how to accomplish
> that?  I'm here to code and I'm willing to throw all my work in the
> garbage if someone can show me how to actually do it better.

I don't think you need to be blocking if you passed up a file handle ?

	fd = fileeventmumble(somestuff);
	do_stuff
	close(fd);

[taking care not to end up recursing as a result]
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