[CRIU] [PATCH RFC 00/12] Restore nested mount namespaces

[Andrey Vagin]

Systemd is able to execute a service in a new mount namespace.
It's used by Fedora and probably will be used in RHEL7.

All nested mount namespaces are restored as sub-trees of the root
namespace. A namespace is restored by a task with minimal pid in this
namespace. The task unshares mount namespace and makes pivot_root in a
proper sub-tree. All other task from the namespace attaches to the
namespace by calling setns().

Andrey Vagin (12):
  initialize root before dumping mount namespace
  namespace: move struct ns_id into namespace.h
  mounts: allow to customize root path for cr_pivot_root
  restore: add mount id-s in the ns_ids list
  mounts: mark local root-s in the list of mount points
  mounts: connect sub-root to the main root
  mounts: handle propogation for the global root
  mounts: bind mount one root for all namespaces
  namespace: add a function to search an ns_id item by id
  mounts: create a temporary directory for restoring non-root mntns
  crtools: restore nested mount namespaces
  mount: allow to dump and restore nested mount namespaces

 cr-restore.c         |  34 +++++--
 include/mount.h      |   4 +
 include/namespaces.h |  12 +++
 include/proc_parse.h |   1 +
 mount.c              | 280 ++++++++++++++++++++++++++++++++++++++++++++-------
 namespaces.c         |  52 ++++++++--
 pstree.c             |   7 +-
 7 files changed, 335 insertions(+), 55 deletions(-)

-- 
1.8.3.1