Messages in this thread | | | Date | Wed, 28 Mar 2012 16:30:44 -0500 | From | Serge Hallyn <> | Subject | Re: [rfc] fcntl: Add F_GETOWNER_UIDS option |
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Quoting Oleg Nesterov (oleg@redhat.com): > On 03/28, Serge E. Hallyn wrote: > > > > If you want to > > just add the struct cred to the f_owner and do proper uid conversion, > > I'll support that too. (Just grab a ref to the cred in > > fs/fcntl.c:f_modown(), and drop the ref in fs/file_table.c:__fput() ). > > In this case f_owner.*uid should go away, I guess.
Yup.
Which I guess is all the more reason *not* to do this unless we end up not going with Eric's userns mapping patchset (which is unlikely).
> And sigio_perm() > should be unified with kill_ok_by_cred() somehow (modulo > security_file_send_sigiotask). > > Right?
Maybe, but other differences include current being the signal sender in one and recipient in the other, and CAP_KILL being relevent in only one.
-serge
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