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Date: Fri, 24 Apr 2015 11:41:39 -0700 From: Andy Lutomirski <luto@...capital.net> To: Serge Hallyn <serge.hallyn@...ntu.com> Cc: Christoph Lameter <cl@...ux.com>, Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>, Andrew Lutomirski <luto@...nel.org>, "Ted Ts'o" <tytso@....edu>, Andrew Morton <akpm@...uxfoundation.org>, "Andrew G. Morgan" <morgan@...nel.org>, Linux API <linux-api@...r.kernel.org>, Mimi Zohar <zohar@...ux.vnet.ibm.com>, Michael Kerrisk <mtk.manpages@...il.com>, Austin S Hemmelgarn <ahferroin7@...il.com>, linux-security-module <linux-security-module@...r.kernel.org>, Aaron Jones <aaronmdjones@...il.com>, Serge Hallyn <serge.hallyn@...onical.com>, LKML <linux-kernel@...r.kernel.org>, Markku Savela <msa@...h.iki.fi>, Kees Cook <keescook@...omium.org>, Jonathan Corbet <corbet@....net> Subject: Re: [RFC] capabilities: Ambient capabilities On Fri, Apr 24, 2015 at 10:53 AM, Serge Hallyn <serge.hallyn@...ntu.com> wrote: > Quoting Christoph Lameter (cl@...ux.com): >> 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 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. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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