Re: IMA: How to manage user space signing policy with others

Mimi Zohar
2013-03-07T15:40:54Z

On Thu, 2013-03-07 at 09:36 -0500, Vivek Goyal wrote:
> On Wed, Mar 06, 2013 at 08:39:08PM -0500, Mimi Zohar wrote:
> > On Wed, 2013-03-06 at 18:55 -0500, Vivek Goyal wrote:
> > > On Wed, Mar 06, 2013 at 10:42:31AM -0500, Mimi Zohar wrote:
>
> > Adding an IMA call to directly appraise the integrity of a file, rather
> > than adding a hook, prevents other integrity users from being able to
> > define a rule at that point.
>
> We already have security hooks in exec() code and mmap(). And current
> integrity callers are happy with it.

Exposing integrity calls, resolves the problem of code duplication, but
does not address Rusty's third issue of improving the integrity
subsystem. You have no idea if the existing integrity users are happy
with the status quo. It's there and they're using it. They could want
additional hooks or better located hooks. Each of your complaints about
the integrity subsystem could be addressed and would improve the
subsystem.

thanks,

Mimi