linux-kernel - Re: [PATCH v3 1/4] fs, net: Standardize on file_receive helper to move fds across processes

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Message-ID: <202006092227.D2D0E1F8F@keescook>
Date:   Tue, 9 Jun 2020 22:27:54 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Christian Brauner <christian.brauner@...ntu.com>
Cc:     containers@...ts.linux-foundation.org,
        Giuseppe Scrivano <gscrivan@...hat.com>,
        Robert Sesek <rsesek@...gle.com>,
        Chris Palmer <palmer@...gle.com>, Jann Horn <jannh@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Daniel Wagner <daniel.wagner@...-carit.de>,
        linux-kernel@...r.kernel.org, Matt Denton <mpdenton@...gle.com>,
        John Fastabend <john.r.fastabend@...el.com>,
        linux-fsdevel@...r.kernel.org, Tejun Heo <tj@...nel.org>,
        Al Viro <viro@...iv.linux.org.uk>, cgroups@...r.kernel.org,
        stable@...r.kernel.org, "David S . Miller" <davem@...emloft.net>
Subject: Re: [PATCH v3 1/4] fs, net: Standardize on file_receive helper to
 move fds across processes

On Tue, Jun 09, 2020 at 11:27:30PM +0200, Christian Brauner wrote:
> On June 9, 2020 10:55:42 PM GMT+02:00, Kees Cook <keescook@...omium.org> wrote:
> >LOL. And while we were debating this, hch just went and cleaned stuff up:
> >
> >2618d530dd8b ("net/scm: cleanup scm_detach_fds")
> >
> >So, um, yeah, now my proposal is actually even closer to what we already
> >have there. We just add the replace_fd() logic to __scm_install_fd() and
> >we're done with it.
> 
> Cool, you have a link? :)

How about this:

https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?h=devel/seccomp/addfd/v3.1&id=bb94586b9e7cc88e915536c2e9fb991a97b62416

-- 
Kees Cook