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, 10 insertions, 0 deletions

diff --git a/libpod/runtime_pod.go b/libpod/runtime_pod.go
index 280699b79..19e32d1b0 100644
--- a/libpod/runtime_pod.go
+++ b/libpod/runtime_pod.go
@@ -26,6 +26,16 @@ type PodFilter func(*Pod) bool
 // being removed
 // Otherwise, the pod will not be removed if any containers are running
 func (r *Runtime) RemovePod(ctx context.Context, p *Pod, removeCtrs, force bool) error {
+	r.lock.Lock()
+	defer r.lock.Unlock()
+
+	if !r.valid {
+		return ErrRuntimeStopped
+	}
+
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
 	return r.removePod(ctx, p, removeCtrs, force)
 }