linux-kernel - Re: [malware-list] [RFC 0/5] [TALPA] Intro to a linux interface for on access scanning

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Date:	Mon, 4 Aug 2008 20:26:19 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Greg KH <greg@...ah.com>
Cc:	Eric Paris <eparis@...hat.com>, malware-list@...ts.printk.net,
	linux-kernel@...r.kernel.org
Subject: Re: [malware-list] [RFC 0/5] [TALPA] Intro to a linux interface
	for on access scanning

On Mon, Aug 04, 2008 at 03:32:49PM -0700, Greg KH wrote:
> >   1. Intercept file opens (exec also) for vetting (block until
> >   decision is made) and allow some userspace black magic to make
> >   decisions.

NACK, this kind of policy should be done in kernelspace.

> >   2. Intercept file closes for scanning post access

Not  even possible for mmap, and dumb otherwise, NACK.

> >   6. Scan files directly not relying on path.  Avoid races and problems with namespaces, chroot, containers, etc.

Explain? 

> >   9. Mark a processes as exempt from on access scanning

Nack, this completely defeats the purpose.

> >  11. Exclude sub-trees from scanning based on filesystem path
> >  12. Include only certain sub-trees from scanning based on filesystem path

Nack, please no pathname based idiocies.

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