Add runsc checkpoint command.

Checkpoint command is plumbed through container and sandbox.
Restore has also been added but it is only a stub. None of this
works yet. More changes to come.

PiperOrigin-RevId: 199510105
Change-Id: Ibd08d57f4737847eb25ca20b114518e487320185

1 files changed, 10 insertions, 0 deletions

diff --git a/runsc/container/container.go b/runsc/container/container.go
index f20ec2453..eee148f5a 100644
--- a/runsc/container/container.go
+++ b/runsc/container/container.go
@@ -299,6 +299,16 @@ func (c *Container) Signal(sig syscall.Signal) error {
 	return c.Sandbox.Signal(c.ID, sig)
 }
 
+// Checkpoint sends the checkpoint call to the container.
+func (c *Container) Checkpoint() error {
+	log.Debugf("Checkpoint container %q", c.ID)
+	if c.Status == Stopped {
+		log.Warningf("container %q not running, not checkpointing", c.ID)
+		return nil
+	}
+	return c.Sandbox.Checkpoint(c.ID)
+}
+
 // State returns the metadata of the container.
 func (c *Container) State() specs.State {
 	return specs.State{