Re: [RFC] capabilities: Ambient capabilities

[Andy Lutomirski]

On Fri, Apr 24, 2015 at 1:13 PM, Christoph Lameter <cl@xxxxxxxxx> 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 :)

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
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