[PATCH v2] lsm: adds process attribute getter for Landlock

[Jeff Xu]

Hi Paul,

On Wed, May 31, 2023 at 6:26 AM Mickaël Salaün <mic at digikod.net> wrote:
> >>>
> >>>
> >> If I understand correctly:
> >> 1> A new lsm syscall - lsm_get_pid_attr():  Landlock will return the
> >> process's landlock sandbox status: true/false.
> >
> > There would have to be a new LSM_ATTR_ENFORCMENT to query.
> > Each LSM could then report what, if any, value it choose to.
> > I can't say whether SELinux would take advantage of this.
> > I don't see that Smack would report this attribute.
>
> I think such returned status for LSM_ATTR_ENFORCMENT query would make
> sense, but the syscall could also return -EPERM and other error codes.
>
>
> >
> >>
> >> Is this a right fit for SELinux to also return the process's enforcing
> >> mode ? such as enforcing/permissive.
>
> Paul could answer that, but I think it would be simpler to have two
> different queries, something like LSM_ATTR_ENFORCMENT and
> LSM_ATTR_PERMISSIVE queries.
>
Hi Paul, what do you think ? Could SELinux have something like this.

Thanks!
-Jeff