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    SubjectRe: AppArmor FAQ
    On Thu, 19 Apr 2007, Stephen Smalley wrote:

    > already happened to integrate such support into userland.
    >
    > To look at it in a slightly different way, the AA emphasis on not
    > modifying applications could be viewed as a limitation. Ultimately,
    > users have security goals that go beyond just what the OS can directly
    > enforce and at least some applications (notably things like X, D-BUS,
    > PostgreSQL, etc) need to likewise support strong domain separation and
    > controlled information flow through their own internal objects and
    > operations. SELinux provides APIs and infrastructure for such
    > applications, and has already done quite a bit of work in that space
    > (D-BUS support, XACE/XSELinux, SE-PostgreSQL), whereas AA seems to have
    > no interest in going there (and would have to recant its emphasis on no
    > application mods to do so). If you actually want to truly confine a
    > desktop application, you can't limit yourself to the kernel. And the
    ^^^^^^^^^^^^^^^^^^^

    > label model provides a unifying abstraction for dealing with all of
    > these various objects, whereas the path/"natural abstraction" model has
    > no unifying abstraction at all.


    AA isn't aimed at confineing desktop applications. it's aimed at confining
    server applications. this really is a easier task (if it happens to be useful
    for some desktop apps as well, so much the better)

    David Lang
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