tree 0d45320911d2a339bc0abd6bacd5703c7308c08c
parent 6786741dbf99e44fb0c0ed85a37582b8a26f1c3b
author Andrey Vagin <avagin@openvz.org> 1473148035 -0700
committer Eric W. Biederman <ebiederm@xmission.com> 1474592381 -0500

nsfs: add ioctl to get a parent namespace

Pid and user namepaces are hierarchical. There is no way to discover
parent-child relationships.

In a future we will use this interface to dump and restore nested
namespaces.

Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>