From: Matthew Wilcox <willy@infradead.org>
To: Yves-Alexis Perez <corsac@corsac.net>
Cc: Kees Cook <keescook@chromium.org>,
Jonathan Corbet <corbet@lwn.net>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
trivial@kernel.org
Subject: Re: [PATCH] yama: clarify ptrace_scope=2 in Yama documentation
Date: Tue, 2 Oct 2018 13:52:59 -0700 [thread overview]
Message-ID: <20181002205259.GA16090@bombadil.infradead.org> (raw)
In-Reply-To: <20181002204722.GA9610@scapa.corsac.net>
On Tue, Oct 02, 2018 at 10:47:23PM +0200, Yves-Alexis Perez wrote:
> Current phrasing is ambiguous since it's unclear if attaching to a
> children through PTRACE_TRACEME requires CAP_SYS_PTRACE. Rephrase the
> sentence to make that clear.
I disagree that your sentence makes that clear. How about:
> 2 - admin-only attach:
> - only processes with ``CAP_SYS_PTRACE`` may use ptrace
> - with ``PTRACE_ATTACH``, or through children calling ``PTRACE_TRACEME``.
> + only processes with ``CAP_SYS_PTRACE`` may use ptrace, either with
> + ``PTRACE_ATTACH`` or through children calling ``PTRACE_TRACEME``.
+ only processes with ``CAP_SYS_PTRACE`` may use ptrace. This
+ restricts both ``PTRACE_ATTACH`` and ``PTRACE_TRACEME``.
next prev parent reply other threads:[~2018-10-02 20:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-02 20:47 [PATCH] yama: clarify ptrace_scope=2 in Yama documentation Yves-Alexis Perez
2018-10-02 20:52 ` Kees Cook
2018-10-07 14:37 ` Jonathan Corbet
2018-10-02 20:52 ` Matthew Wilcox [this message]
2018-10-02 21:07 ` Kees Cook
2018-10-02 21:08 ` Yves-Alexis Perez
2018-10-07 8:54 ` Yves-Alexis Perez
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