linux-kernel - Re: [PATCH V2] ipc: add set_ownership() and permissions() callbacks for posix mqueue sysctl

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Message-ID: <20211004105313.k55766idkyoo6jvt@wittgenstein>
Date:   Mon, 4 Oct 2021 12:53:13 +0200
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     CGEL <cgel.zte@...il.com>
Cc:     dbueso@...e.de, jamorris@...ux.microsoft.com,
        keescook@...omium.org, ktkhai@...tuozzo.com, legion@...nel.org,
        linux-kernel@...r.kernel.org, ran.xiaokai@....com.cn,
        varad.gautam@...e.com
Subject: Re: [PATCH V2] ipc: add set_ownership() and permissions() callbacks
 for posix mqueue sysctl

On Thu, Sep 16, 2021 at 01:49:31AM +0000, CGEL wrote:
> esOn Mon, Sep 13, 2021 at 04:40:47PM +0200, Christian Brauner wrote:
> > On Fri, Aug 27, 2021 at 03:12:06AM -0700, CGEL wrote:
> > > From: Ran Xiaokai <ran.xiaokai@....com.cn>
> > > 
> > > When a non-root user process creates a user namespace and ipc namespace
> > > with command "unshare -Ur -i", and map the root user inside
> > > the user namesapce to the global owner of user namespace.
> > > The newly created user namespace OWNS the ipc namespace,
> > > So the root user inside the user namespace should have full access
> > > rights to the ipc namespace resources and should be writable to
> > > the ipc mqueue sysctls.
> > > 
> > > v2:
> > >   - update commit msg.
> > >   - fix the coding style issue.
> > > Signed-off-by: Ran Xiaokai <ran.xiaokai@....com.cn>
> > > ---
> > 
> > David,
> > 
> > are you happy with this too? If so I'd pick this up.
> > 
> 
> Hi Christian,
> 
> Is there a xx-next branch for this kind patch?
> We will try to fixes other issues like this, so we could tag the follow-up
> patches with the branch name.

Hm, sorry that message slipped through the pre-mid-and post-conference
cracks.  I'll added the patches now for testing. See:

https://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git/log/?h=kernel.fixes

Christian