lkml.org 
[lkml]   [2015]   [Feb]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] capabilities: Ambient capability set V1
On Thu, 26 Feb 2015, Serge E. Hallyn wrote:

> > Well doing that breaks su.
>
> Don't what exactly? You're saying that doing
>
> pI' = pI
> pA' = pA (pA is ambient)
> pP' = (X & fP) | (pI & (fI | pA))
> pE' = pP' & (fE | pA)
>
> stopped su from having CAP_SETGID while
>
> pI' = pI
> pA' = pA (pA is ambient)
> pP' = (X & fP) | (pI & (fI | pA))
> pE' = pP' & fE
>
> worked? I'll hope you're saying both "fail", in which case

fE does not exist in cpu_vfs_cap_data. We only get fI and fP. Why in the
world does setcap allow setting fE?

V1 does not use fE. In my newer attempt, I seemed to have worked
with zeroed field that I assumed was filled in.

I will just do

pE' = pP'

Ok?


\
 
 \ /
  Last update: 2015-02-26 19:41    [W:0.076 / U:0.116 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site