[PATCH v8 4/6] security: Allow all LSMs to provide xattrs for inode_init_security hook

[Paul Moore]

On Thu, Mar 23, 2023 at 9:01 PM Casey Schaufler <casey at schaufler-ca.com> wrote:
> On 3/23/2023 5:09 PM, Paul Moore wrote:
> > On Tue, Mar 14, 2023 at 4:19 AM Roberto Sassu
> > <roberto.sassu at huaweicloud.com> wrote:

...

> >> diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
> >> index c2be66c669a..75a2f85b49d 100644
> >> --- a/include/linux/lsm_hooks.h
> >> +++ b/include/linux/lsm_hooks.h
> >> @@ -63,6 +63,7 @@ struct lsm_blob_sizes {
> >>         int     lbs_ipc;
> >>         int     lbs_msg_msg;
> >>         int     lbs_task;
> >> +       int     lbs_xattr; /* number of xattr slots in new_xattrs array */
> >
> > No need for the comment, we don't do it for the other fields.
>
> I asked for the comment. lbs_xattr is the number of entries, which is
> different from the other fields. The other fields contain blob sizes in
> bytes. Inconsistent behavior should be noted.

Fair enough.  Since that's the case, let's encode something in the
field name itself so that every user has a slight reminder that it is
a count and not a size.  How about 'lbs_xattr_count' or similar?

-- 
paul-moore.com