From: Serge Hallyn <serge.hallyn-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org>
To: Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
Cc: Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>,
Jarkko Sakkinen
<jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Andrew Lutomirski <luto-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Ted Ts'o <tytso-3s7WtUTddSA@public.gmane.org>,
Andrew Morton
<akpm-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
"Andrew G. Morgan"
<morgan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Linux API <linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Mimi Zohar
<zohar-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
Michael Kerrisk
<mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Austin S Hemmelgarn
<ahferroin7-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
linux-security-module
<linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Aaron Jones
<aaronmdjones-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Serge Hallyn
<serge.hallyn-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>,
LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Markku Savela <msa-kXoF896ld44xHbG02/KK1g@public.gmane.org>,
Kees Cook <keescook-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
Jonathan Corbet <corbet-T1hC0tSOHrs@public.gmane.org>
Subject: Re: [RFC] capabilities: Ambient capabilities
Date: Fri, 24 Apr 2015 19:09:35 +0000 [thread overview]
Message-ID: <20150424190935.GN16377@ubuntumail> (raw)
In-Reply-To: <CALCETrW5_85mFFTkzCVNA5N1KQeNBrkw2d8FF3H3LYtmz6UAPw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
Quoting Andy Lutomirski (luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org):
> On Fri, Apr 24, 2015 at 10:53 AM, Serge Hallyn <serge.hallyn-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org> wrote:
> > Quoting Christoph Lameter (cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org):
> >> On Thu, 9 Apr 2015, Christoph Lameter wrote:
> >>
> >> > > I'll submit a new version this week with the securebits. Sorry for the delay.
> >> > Are we going to get a new version?
> >>
> >> Replying to my own here. Cant we simply use the SETPCAP approach as per
> >> the patch I posted?
> >
> > Andy had objections to that, but it seems ok to me.
> >
>
> I object because CAP_SETPCAP is very powerful whereas
> CAP_NET_BIND_SERVICE, for example, isn't. I'm fine with having a
> switch to turn off ambient caps, but requiring the "on" state to give
Would only really be needed for the initial 'enable ambient caps for this
process tree', though. Once that was set, add/remove'ing caps from the
ambient set wouldn't need to be required.
> processes superpowers seems unfortunate.
>
> Sorry for the huge delay. I got caught up with travel and the merge
> window. Here's a sneak peek:
>
> https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git/log/?h=cap_ambient
>
> I need to write the user code to go with it and test it a bit before
> sending it out for real.
Ok, thanks
-serge
next prev parent reply other threads:[~2015-04-24 19:09 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-12 18:08 [RFC] capabilities: Ambient capabilities Andy Lutomirski
2015-03-12 21:49 ` Kees Cook
2015-03-12 22:10 ` Andrew G. Morgan
[not found] ` <CALQRfL7b8CjYgUnVy3jykNwv48fOc03T385RKo--cfv25YenBg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-12 22:27 ` Andrew Lutomirski
[not found] ` <CAObL_7HgU-ekb7mJS7C=0=idfrzV6=CSqTrG2LvUgdDtvbJx_w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-13 13:24 ` Andrew G. Morgan
2015-03-13 16:06 ` Christoph Lameter
[not found] ` <alpine.DEB.2.11.1503131049150.13899-gkYfJU5Cukgdnm+yROfE0A@public.gmane.org>
2015-03-13 17:58 ` Andy Lutomirski
[not found] ` <CALCETrXcUfbqfm7av9crrxQ5nCBYpdJO8gRo4ZhRA97g27B2iw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-13 18:52 ` Christoph Lameter
2015-03-13 17:57 ` Andy Lutomirski
[not found] ` <CALCETrVz39pJmMAEFodBNA8cOZjd0xkH95EzMazY0MWJDtpYgg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-13 18:52 ` Kees Cook
2015-03-13 19:03 ` Andy Lutomirski
[not found] ` <CALCETrV7vDJVhM_AgtGn8ENStcyxZBwCw3zhSn-whArT_XPg8A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-13 19:54 ` Kees Cook
2015-03-14 21:09 ` Andrew G. Morgan
2015-03-14 21:45 ` Andy Lutomirski
[not found] ` <CALCETrUGASa3Gp6cC1zdAahcS59DOdyLnTtgNX7t7FucMZLmoQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-14 22:17 ` Andrew G. Morgan
[not found] ` <CALQRfL6z2dEtPkWiuGydT0a+y4iWm2qw-cY0Rk9hA-K4gPw_qA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-14 22:53 ` Andy Lutomirski
2015-03-14 22:55 ` Andy Lutomirski
[not found] ` <CALCETrWRHRVLotFs=Cpdr=7KjE7q52NdT62GxZg=xjv+LFZBqw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-15 0:04 ` Andrew G. Morgan
2015-03-30 12:55 ` Christoph Lameter
[not found] ` <alpine.DEB.2.11.1503300754070.5031-gkYfJU5Cukgdnm+yROfE0A@public.gmane.org>
2015-03-30 14:31 ` Andy Lutomirski
[not found] ` <CALCETrW9ckw=7-1JSyFkenhFu2_1MvVqjA+inOmsuuWemGaU0w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-03-30 15:05 ` Christoph Lameter
2015-04-09 15:25 ` Christoph Lameter
[not found] ` <alpine.DEB.2.11.1504091024540.13650-gkYfJU5Cukgdnm+yROfE0A@public.gmane.org>
2015-04-23 14:01 ` Christoph Lameter
[not found] ` <alpine.DEB.2.11.1504230900260.32203-gkYfJU5Cukgdnm+yROfE0A@public.gmane.org>
2015-04-24 17:53 ` Serge Hallyn
2015-04-24 18:41 ` Andy Lutomirski
[not found] ` <CALCETrW5_85mFFTkzCVNA5N1KQeNBrkw2d8FF3H3LYtmz6UAPw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-04-24 19:09 ` Serge Hallyn [this message]
2015-04-24 19:25 ` Christoph Lameter
2015-04-24 19:53 ` Andy Lutomirski
2015-04-24 20:13 ` Christoph Lameter
[not found] ` <alpine.DEB.2.11.1504241512570.11839-gkYfJU5Cukgdnm+yROfE0A@public.gmane.org>
2015-04-24 20:18 ` Andy Lutomirski
2015-04-24 21:15 ` Serge E. Hallyn
[not found] ` <20150424211511.GB28613-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2015-04-24 22:55 ` Andy Lutomirski
[not found] ` <CALCETrUdNp18ZeOC8pRYn_YPUp8nFyH7aS+dFoBf34XNmER-nA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-04-25 2:45 ` Serge Hallyn
2015-04-27 14:55 ` Christoph Lameter
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