Added option to share kernel namespaces in libpod and podman

A pause container is added to the pod if the user opts in. The default pause image and command can be overridden. Pause containers are ignored in ps unless the -a option is present. Pod inspect and pod ps show shared namespaces and pause container. A pause container can't be removed with podman rm, and a pod can be removed if it only has a pause container.

Signed-off-by: haircommander <pehunt@redhat.com>

Closes: #1187
Approved by: mheon

1 files changed, 6 insertions, 1 deletions

diff --git a/libpod/pod_api.go b/libpod/pod_api.go
index d1e19063c..096c9b513 100644
--- a/libpod/pod_api.go
+++ b/libpod/pod_api.go
@@ -426,13 +426,18 @@ func (p *Pod) Inspect() (*PodInspect, error) {
 		}
 		podContainers = append(podContainers, pc)
 	}
+	pauseContainerID := p.state.PauseContainerID
+	if err != nil {
+		return &PodInspect{}, err
+	}
 
 	config := new(PodConfig)
 	deepcopier.Copy(p.config).To(config)
 	inspectData := PodInspect{
 		Config: config,
 		State: &PodInspectState{
-			CgroupPath: p.state.CgroupPath,
+			CgroupPath:       p.state.CgroupPath,
+			PauseContainerID: pauseContainerID,
 		},
 		Containers: podContainers,
 	}