On Apr 20,  9:16pm, elad@NetBSD.org (Elad Efrat) wrote:
-- Subject: Re: CVS commit: [elad-kernelauth] src/sys/ufs/ext2fs

| Userland should not use anything inside a kauth_cred_t, and so I don't
| see a problem with using #ifdef _KERNEL around kauth.h's kernel-only
| parts, and adding a userspace-only typedef for kauth_cred_t to a void *
| which is unused anyway.
| 
| What guarantees that people don't start directly accessing members of
| struct kauth_cred?
| 

That they don't have access/knowledge to what's inside struct kauth_cred?
If they do have access/knowledge to struct kauth_cred, they can cast the
kauth_cred_t to that and use it anyway.

christos