From: Christoph Hellwig <hch@infradead.org>
To: Meredydd Luff <meredydd@senatehouse.org>
Cc: Christoph Hellwig <hch@infradead.org>,
Andy Lutomirski <luto@amacapital.net>,
David Drysdale <drysdale@google.com>,
Al Viro <viro@zeniv.linux.org.uk>,
LSM List <linux-security-module@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
James Morris <james.l.morris@oracle.com>,
Kees Cook <keescook@chromium.org>,
Linux API <linux-api@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-man <linux-man@vger.kernel.org>
Subject: Re: [PATCH 01/11] fs: add O_BENEATH_ONLY flag to openat(2)
Date: Tue, 8 Jul 2014 06:12:55 -0700 [thread overview]
Message-ID: <20140708131255.GA25362@infradead.org> (raw)
In-Reply-To: <CAD=T17FcSKCkEwGMDtcss0Ye-EwuW4Gd2bmXiVj0YV2JG3xeWQ@mail.gmail.com>
On Tue, Jul 08, 2014 at 02:04:45PM +0100, Meredydd Luff wrote:
> On 8 July 2014 13:51, Christoph Hellwig <hch@infradead.org> wrote:
> > Yeah, it won't work for an explicit directory - I was thinking of
> > working relative to $CWD.
>
> I think that would sacrifice far too much flexibility. Even without
> Capsicum, it would be worthwhile to be able to wire up a static
> seccomp-bpf filter to enforce constraints such as "you can open files
> under fd#5 for reading, but you can only write to files under fd#6,
> and you can't do any global lookups."
Yeah, I didn't intend to advocate this further after your reply.
prev parent reply other threads:[~2014-07-08 13:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1404124096-21445-1-git-send-email-drysdale@google.com>
[not found] ` <1404124096-21445-2-git-send-email-drysdale@google.com>
[not found] ` <CALCETrU=HLmw9n-DxPkFV1xP5wtzQ7-YF3-uao6YiGZODA9kdw@mail.gmail.com>
[not found] ` <20140630154928.GB10375@google.com>
[not found] ` <CALCETrWJ-rqDo8OvSZWPUt1806gObNtwVHvC4M6kfQgvd3Eg9w@mail.gmail.com>
[not found] ` <CALCETrWJ-rqDo8OvSZWPUt1806gObNtwVHvC4M6kfQgvd3Eg9w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-08 12:07 ` [PATCH 01/11] fs: add O_BENEATH_ONLY flag to openat(2) Christoph Hellwig
[not found] ` <20140708120702.GB30459-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2014-07-08 12:48 ` Meredydd Luff
[not found] ` <CAD=T17FQEZV+iy91wQAvAdd0PW2tsfjpU7atp-xeatm5sEGz5Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-08 12:51 ` Christoph Hellwig
[not found] ` <20140708125138.GA4749-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2014-07-08 13:04 ` Meredydd Luff
2014-07-08 13:12 ` Christoph Hellwig [this message]
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