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    SubjectRe: [Keyrings] [PATCH] Keys: Add LSM hooks for key management
    Date
    Chris Wright <chrisw@osdl.org> wrote:

    > The security check is comparing key label to task label. If it's not
    > done 100% in current context, then task must be passed to get access
    > to proper label. So, for example, request-key is done by the special
    > privileged /sbin/request-key via usermodehelper on behalf of someone else.

    Which task(s)? Both the one doing the check, and the one on whose behalf the
    check is done?

    > > Auditing?
    >
    > Hmm, suppose, but auditing is not the charter of LSM. So in this case,
    > the previous hook can audit key creation if needed. Just looking to
    > avoid hook proliferation if possible.

    But you don't know the key serial number at that point, hence why I added the
    second hook. I'll drop the second. I can always bring it back later.

    > > That's what I was thinking of.
    >
    > I see, what would they used for?

    I don't know. As far as I know, setxattr and co can be used to set and
    retrieve security data on files. I thought it would be desirable to have
    similar for keys. If not, I can remove both calls/hooks for the time being.

    David
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