From: "Serge E. Hallyn" <serge@hallyn.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Christoph Lameter <cl@linux.com>,
Serge Hallyn <serge.hallyn@ubuntu.com>,
Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
Andrew Lutomirski <luto@kernel.org>, Ted Ts'o <tytso@mit.edu>,
Andrew Morton <akpm@linuxfoundation.org>,
"Andrew G. Morgan" <morgan@kernel.org>,
Linux API <linux-api@vger.kernel.org>,
Mimi Zohar <zohar@linux.vnet.ibm.com>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Austin S Hemmelgarn <ahferroin7@gmail.com>,
linux-security-module <linux-security-module@vger.kernel.org>,
Aaron Jones <aaronmdjones@gmail.com>,
Serge Hallyn <serge.hallyn@canonical.com>,
LKML <linux-kernel@vger.kernel.org>,
Markku Savela <msa@moth.iki.fi>,
Kees Cook <keescook@chromium.org>,
Jonathan Corbet <corbet@lwn.net>
Subject: Re: [RFC] capabilities: Ambient capabilities
Date: Fri, 24 Apr 2015 16:15:11 -0500 [thread overview]
Message-ID: <20150424211511.GB28613@mail.hallyn.com> (raw)
In-Reply-To: <CALCETrUrFm9n_4xTj4ELkzTSnWHfxQtANqz2wpzU7riTihLDaA@mail.gmail.com>
On Fri, Apr 24, 2015 at 01:18:44PM -0700, Andy Lutomirski wrote:
> On Fri, Apr 24, 2015 at 1:13 PM, Christoph Lameter <cl@linux.com> wrote:
> > On Fri, 24 Apr 2015, Andy Lutomirski wrote:
> >
> >> That's sort of what my patch does -- you need CAP_SETPCAP to switch
> >> the securebit.
> >>
> >> But Christoph's patch required it to add caps to the ambient set, right?
> >
> > Yes but you seem to be just adding one additional step without too much of
> > a benefit because you still need CAP_SETPCAP.
> >
>
> No, because I set the default to on :)
Right - I definately prefer
. default off
. CAP_SETPCAP required to turn it on (for self and children)
. once on, anyone can copy bits from (whatever we decided) to pA.
> Also, in my model you can do:
>
> $ sudo capset cap_whatever=eip something
> $ ./something
>
> and the program can make its cap be ambient and run a helper. In the
> CAP_SETPCAP model, that doesn't work.
>
> --Andy
>
> --
> Andy Lutomirski
> AMA Capital Management, LLC
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
next prev parent reply other threads:[~2015-04-24 21:15 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
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 [this message]
[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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150424211511.GB28613@mail.hallyn.com \
--to=serge@hallyn.com \
--cc=aaronmdjones@gmail.com \
--cc=ahferroin7@gmail.com \
--cc=akpm@linuxfoundation.org \
--cc=cl@linux.com \
--cc=corbet@lwn.net \
--cc=jarkko.sakkinen@linux.intel.com \
--cc=keescook@chromium.org \
--cc=linux-api@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=luto@amacapital.net \
--cc=luto@kernel.org \
--cc=morgan@kernel.org \
--cc=msa@moth.iki.fi \
--cc=mtk.manpages@gmail.com \
--cc=serge.hallyn@canonical.com \
--cc=serge.hallyn@ubuntu.com \
--cc=tytso@mit.edu \
--cc=zohar@linux.vnet.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).