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Date:      Fri, 9 Dec 2016 12:13:09 -0800
From:      Conrad Meyer <cem@freebsd.org>
To:        Konstantin Belousov <kib@freebsd.org>
Cc:        src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org,  svn-src-head@freebsd.org
Subject:   Re: svn commit: r308212 - in head/sys: fs/nfsserver kern sys
Message-ID:  <CAG6CVpWuEMtVzyusaSpmrKazvkthN7Hi8mO7==zubhDSN=WxWg@mail.gmail.com>
In-Reply-To: <201611021243.uA2ChGIg003295@repo.freebsd.org>
References:  <201611021243.uA2ChGIg003295@repo.freebsd.org>

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On Wed, Nov 2, 2016 at 5:43 AM, Konstantin Belousov <kib@freebsd.org> wrote:
> Author: kib
> Date: Wed Nov  2 12:43:15 2016
> New Revision: 308212
> URL: https://svnweb.freebsd.org/changeset/base/308212
>
> Log:
>   Allow some dotdot lookups in capability mode.
>
>   If dotdot lookup does not escape from the file descriptor passed as
>   the lookup root, we can allow the component traversal.  Track the
>   directories traversed, and check the result of dotdot lookup against
>   the recorded list of the directory vnodes.
>
>   Dotdot lookups are enabled by sysctl vfs.lookup_cap_dotdot, currently
>   disabled by default until more verification of the approach is done.

Hi Konstantin,

Are we waiting on a specific reviewer or something else?  It would be
very nice to have this enabled by default.

Thanks,
Conrad



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