access(2) using effective uid instead of real one?

Alex ahornung at
Mon Aug 10 15:14:38 PDT 2009

As far as I can see it should be trivial to change it touse the real
uid in vop_helper_access. Just change the references to cr_uid and
cr_gid to cr_ruid and cr_rgid.
If this is how it should be or shouldn't... I don't know.

2009/8/10 Nicolas Thery <nthery at>:
> Hello,
> According to man and posix, access(2) uses the real user UID instead
> of the effective one.  However it looks like the functions doing the
> checking (ufs_access, vop_helper_access) use the effective uid  and I
> can't find anywhere where the effective uid passed to these functions
> would be changed for the real one (as fbsd does).
> I also wrote a small program that confirms this.
> Assuming I'm not missing something, Is it intentional or a bug?
> Cheers,
> Nicolas

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