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    SubjectRe: [PATCH 0/5] VFS: DazukoFS, stackable-fs, file access control
    On Tue 2008-12-23 19:55:27, John Ogness wrote:
    > On 2008-12-23, Pavel Machek <pavel@suse.cz> wrote:
    > >> MOTIVATION
    > >>
    > >> Since 2001 various anti-virus vendors have been providing
    > >> out-of-tree solutions for online virus scanning. Although GNU/Linux
    > >> systems currently are not targets of virus authors, many
    > >> organizations are interested in online virus scanning on
    > >> Linux-based servers in order to help protect Microsoft Windows
    > >> clients. It is often argued that file scanning should be
    > >> implemented in the various services (such as Samba, Apache, vsftpd,
    > >> etc.), and indeed many such solutions have been
    > >> implemented. However, there is a continued demand for a
    > >> kernel-based solution because it can guard the entire filesystem
    > >> independent from the types and numbers of services running on a
    > >> system.
    > >
    > > Somewhere here you should mention that unlike other solutions that
    > > work 100% of time, dazuko is be design racy and may still allow
    > > viruses to be spread from linux system when mmap is used.
    >
    > This thread is about DazukoFS. I feel there is no need to discuss
    > previous incarnations of Dazuko, all of which share _no_ code with
    > DazukoFS.
    >
    > If you are aware of a race condition in DazukoFS, please report
    > it. Thank you.

    I'm surprised, do you claim there is none?

    So how do you handle mmap(...MAP_SHARED) case?
    Pavel
    --
    (english) http://www.livejournal.com/~pavelmachek
    (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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