[lkml]   [2018]   [Feb]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: plan9 semantics on Linux - mount namespaces
On 2018-02-13, Enrico Weigelt <> wrote:
> On 13.02.2018 22:12, Enrico Weigelt wrote:
> > I'm currently trying to implement plan9 semantics on Linux and
> > yet sorting out how to do the mount namespace handling.
> >
> > On plan9, any unprivileged process can create its own namespace
> > and mount/bind at will, while on Linux this requires CAP_SYS_ADMIN.
> >
> > What is the reason for not allowing arbitrary users to create their
> > own private mount namespace ? What could go wrong here ?

You can do this by creating a new user namespace (CLONE_NEWUSER), which
then gives you the required permissions to create other namespaces
(CLONE_NEWNS). This is how "rootless containers" or unprivileged
containers operate.

Aleksa Sarai
Senior Software Engineer (Containers)
SUSE Linux GmbH
[unhandled content-type:application/pgp-signature]
 \ /
  Last update: 2018-02-13 23:28    [W:0.098 / U:0.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site