Use container cleanup() functions when removing

Instead of manually calling the individual functions that cleanup
uses to tear down a container's resources, just call the cleanup
function to make sure that cleanup only needs to happen in one
place.

Signed-off-by: Matthew Heon <matthew.heon@gmail.com>

Closes: #790
Approved by: rhatdan

libpod/container_internal.go

@@ -765,7 +765,7 @@ func (c *Container) cleanupCgroups() error {
 func (c *Container) cleanupNetwork() error {
 	// Stop the container's network namespace (if it has one)
 	if err := c.runtime.teardownNetNS(c); err != nil {
-		logrus.Errorf("unable cleanup network for container %s: %q", c.ID(), err)
+		logrus.Errorf("unable to cleanup network for container %s: %q", c.ID(), err)
 	}
 
 	c.state.NetNS = nil

libpod/oci.go

@@ -465,7 +465,7 @@ func (r *OCIRuntime) updateContainerStatus(ctr *Container) error {
 		}
 		statusCode, err := strconv.Atoi(string(statusCodeStr))
 		if err != nil {
-			return errors.Wrapf(err, "error convertaing exit status code for container %s to int",
+			return errors.Wrapf(err, "error converting exit status code for container %s to int",
 				ctr.ID())
 		}
 		ctr.state.ExitCode = int32(statusCode)

libpod/runtime_ctr.go

@@ -219,13 +219,8 @@ func (r *Runtime) removeContainer(c *Container, force bool) error {
 		return errors.Wrapf(ErrCtrExists, "container %s has dependent containers which must be removed before it: %s", c.ID(), depsStr)
 	}
 
-	// Tear down the container's cgroups (if they exist)
-	if err := c.cleanupCgroups(); err != nil {
-		return err
-	}
-
-	// Stop the container's network namespace (if it has one)
-	if err := r.teardownNetNS(c); err != nil {
+	// Clean up network namespace, cgroups, mounts
+	if err := c.cleanup(); err != nil {
 		return err
 	}
 

libpod/runtime_pod.go

@@ -160,8 +160,8 @@ func (r *Runtime) RemovePod(p *Pod, removeCtrs, force bool) error {
 	// We can remove containers even if they have dependencies now
 	// As we have guaranteed their dependencies are in the pod
 	for _, ctr := range ctrs {
-		// Stop network NS
-		if err := r.teardownNetNS(ctr); err != nil {
+		// Clean up network namespace, cgroups, mounts
+		if err := ctr.cleanup(); err != nil {
 			return err
 		}