pod config: add a `CreateCommand` field

Add a `CreateCommand` field to the pod config which includes the entire
`os.Args` at pod-creation.  Similar to the already existing field in a
container config, we need this information to properly generate generic
systemd unit files for pods.  It's a prerequisite to support the `--new`
flag for pods.

Also add the `CreateCommand` to the pod-inspect data, which can come in
handy for debugging, general inspection and certainly for the tests that
are added along with the other changes.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/libpod/options.go b/libpod/options.go
index 8e0d3df86..75d098815 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -1538,6 +1538,18 @@ func WithPodHostname(hostname string) PodCreateOption {
 	}
 }
 
+// WithPodCreateCommand adds the full command plus arguments of the current
+// process to the pod config.
+func WithPodCreateCommand() PodCreateOption {
+	return func(pod *Pod) error {
+		if pod.valid {
+			return define.ErrPodFinalized
+		}
+		pod.config.CreateCommand = os.Args
+		return nil
+	}
+}
+
 // WithPodLabels sets the labels of a pod.
 func WithPodLabels(labels map[string]string) PodCreateOption {
 	return func(pod *Pod) error {