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Date:   Thu, 10 Sep 2020 17:20:59 +0100
From:   Christoph Hellwig <hch@infradead.org>
To:     Rich Felker <dalias@libc.org>
Cc:     linux-api@vger.kernel.org,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] vfs: add fchmodat2 syscall
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On Thu, Sep 10, 2020 at 10:23:37AM -0400, Rich Felker wrote:
> userspace emulation done in libc implementations. No change is made to
> the underlying chmod_common(), so it's still possible to attempt
> changes via procfs, if desired.

And that is the goddamn problem.  We need to fix that _first_.  After
that we can add sugarcoating using new syscalls if needed.