rootless: fix pod stop|rm if uid in the container != 0

join the user namespace where the pod is running, so that we can both
manage the storage and correctly send the kill signal to a process
which is not running as root in the namespace.

Closes: https://github.com/containers/libpod/issues/2577

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/pkg/adapter/runtime_remote.go b/pkg/adapter/runtime_remote.go
index 10c25c3f3..9ca4e245f 100644
--- a/pkg/adapter/runtime_remote.go
+++ b/pkg/adapter/runtime_remote.go
@@ -751,3 +751,10 @@ func IsImageNotFound(err error) bool {
 func (r *LocalRuntime) HealthCheck(c *cliconfig.HealthCheckValues) (libpod.HealthCheckStatus, error) {
 	return -1, libpod.ErrNotImplemented
 }
+
+// JoinOrCreateRootlessPod joins the specified pod if it is running or it creates a new user namespace
+// if the pod is stopped
+func (r *LocalRuntime) JoinOrCreateRootlessPod(pod *Pod) (bool, int, error) {
+	// Nothing to do in the remote case
+	return true, 0, nil
+}