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From: Kees Cook <keescook@chromium.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	Andy Lutomirski <luto@amacapital.net>,
	Will Drewry <wad@chromium.org>
Subject: Re: [PATCH] fs: split receive_fd_replace from __receive_fd
Date: Fri, 2 Apr 2021 12:01:05 -0700	[thread overview]
Message-ID: <202104021157.7B388D1B2@keescook> (raw)
In-Reply-To: <20210325082209.1067987-2-hch@lst.de>

On Thu, Mar 25, 2021 at 09:22:09AM +0100, Christoph Hellwig wrote:
> receive_fd_replace shares almost no code with the general case, so split
> it out.  Also remove the "Bump the sock usage counts" comment from
> both copies, as that is now what __receive_sock actually does.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

I'm okay with repeating code in fs/file.c. What I wanted to avoid was
open coded combinations in various callers.

So, sure, this can be split, but as-is the patch breaks SECCOMP_IOCTL_NOTIF_ADDFD:
https://lore.kernel.org/linux-fsdevel/20210329071939.GC3633@xsang-OptiPlex-9020/

-Kees

-- 
Kees Cook

  parent reply	other threads:[~2021-04-02 19:01 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-25  8:22 split receive_fd_replace from __receive_fd Christoph Hellwig
2021-03-25  8:22 ` [PATCH] fs: " Christoph Hellwig
2021-03-29  7:19   ` [fs] d7b0df2133: kernel-selftests.seccomp.seccomp_bpf.fail kernel test robot
2021-03-29  7:19     ` kernel test robot
2021-04-02 19:01   ` Kees Cook [this message]
2021-04-16  4:15     ` [PATCH] fs: split receive_fd_replace from __receive_fd Al Viro
2021-04-16 13:46       ` Christian Brauner
2021-04-16  3:38   ` Al Viro
2021-03-25  8:30 ` Christian Brauner

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