Added code for a pause command for a container process.

Like runc, the pause command will pause the processes of the given container.
It will set that container's status to "paused."
A resume command will be be added to unpause and continue running the process.

PiperOrigin-RevId: 200789624
Change-Id: I72a5d7813d90ecfc4d01cc252d6018855016b1ea

1 files changed, 9 insertions, 0 deletions

diff --git a/runsc/boot/controller.go b/runsc/boot/controller.go
index 095b0a9b9..564f2d271 100644
--- a/runsc/boot/controller.go
+++ b/runsc/boot/controller.go
@@ -37,6 +37,9 @@ const (
 	// container..
 	ContainerExecute = "containerManager.Execute"
 
+	// ContainerPause pauses the container.
+	ContainerPause = "containerManager.Pause"
+
 	// ContainerProcesses is the URPC endpoint for getting the list of
 	// processes running in a container.
 	ContainerProcesses = "containerManager.Processes"
@@ -153,6 +156,12 @@ func (cm *containerManager) Checkpoint(o *control.SaveOpts, _ *struct{}) error {
 	return state.Save(o, nil)
 }
 
+// Pause suspends the process in a container.
+func (cm *containerManager) Pause(_, _ *struct{}) error {
+	cm.k.Pause()
+	return nil
+}
+
 // Wait waits for the init process in the given container.
 func (cm *containerManager) Wait(cid *string, waitStatus *uint32) error {
 	// TODO: Use the cid and wait on the init process in that