1 files changed, 12 insertions, 0 deletions
diff --git a/pkg/sentry/kernel/task.go b/pkg/sentry/kernel/task.go
index 2f6f825ac..07ad1614c 100644
--- a/pkg/sentry/kernel/task.go
+++ b/pkg/sentry/kernel/task.go
@@ -205,6 +205,13 @@ type Task struct {
 	// k is the Kernel that this task belongs to. The k pointer is immutable.
 	k *Kernel
 
+	// containerID has no equivalent in Linux; it's used by runsc to track all
+	// tasks that belong to a given containers since cgroups aren't implemented.
+	// It's inherited by the children, is immutable, and may be empty.
+	//
+	// NOTE: cgroups can be used to track this when implemented.
+	containerID string
+
 	// mu protects some of the following fields.
 	mu sync.Mutex `state:"nosave"`
 
@@ -678,3 +685,8 @@ func (t *Task) MountNamespace() *fs.MountNamespace {
 func (t *Task) AbstractSockets() *AbstractSocketNamespace {
 	return t.abstractSockets
 }
+
+// ContainerID returns t's container ID.
+func (t *Task) ContainerID() string {
+	return t.containerID
+}