Re: [PATCH] capabilities: Ambient capability set V1

On Thu, Feb 26, 2015 at 03:09:48PM -0600, Christoph Lameter wrote:

On Thu, 26 Feb 2015, Serge E. Hallyn wrote:

quoted

quoted

Same problem as before. The ambient bits will not be set in pE'.

And what if I weren't scatterbrained and we did

 	if (pA)
 		pE' = pP'
 	else
 		pE' = pP' & fE

All pP' bits would be set in pE'.

Ok and the non ambient case would break because fE is not available?
Doesnt this reduce to

pE' = pP'

in either case?

No.  fE is not "not available".  If you set it with setcap, you *should*
(if i'm tinking right) find fE full when calculating the new capability
sets, because of magic_etc.