Add utility for getting processes and process group leaders

process/process_default.go

@@ -3,5 +3,18 @@
 
 package process
 
+import (
+	"context"
+)
+
 // SystemProcessID is the PID of the System/Kernel itself.
 const SystemProcessID = 0
+
+func GetProcessGroupLeader(ctx context.Context, pid int) (*Process, error) {
+	// On systems other than linux we just return the process with PID == pid
+	return GetOrFindProcess(ctx, pid)
+}
+
+func GetProcessGroupID(ctx context.Context, pid int) (int, error) {
+	return 0
+}