Messages in this thread | | | Date | Tue, 27 Mar 2012 20:58:53 +0400 | From | Cyrill Gorcunov <> | Subject | Re: [rfc] fcntl: Add F_GETOWNER_UIDS option |
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On Tue, Mar 27, 2012 at 05:25:34PM +0200, Oleg Nesterov wrote: > user_ns_map_uid() should translate uid_t from one namespace to another, > in this case the namespace is the same. > > user_ns_map_uid(cred->user_ns, cred) must be the identical mapping, > no matter how we change the implementation. > > What I think you need is > user_ns_map_uid(current_user_ns(), filp->f_owner.cred), the only > problem is that f_owner.cred doesn't exist. >
Hmm, I was confused by likely() in user_ns_map_uid. But indeed, I think you're so right. Is there some reason why we can't carry f_owner.cred pointer?
> > Or I miss something > > in general? > > Or me. Add Serge, may be I missed something. > > Oleg. >
Cyrill
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