libpod: allow to configure path to the network-cmd binary

allow to configure the path to the network-cmd binary, either via an
option flag --network-cmd-path or through the libpod.conf
configuration file.

This is currently used to customize the path to the slirp4netns
binary.

Closes: https://github.com/containers/libpod/issues/2506

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

1 files changed, 14 insertions, 0 deletions

diff --git a/libpod/options.go b/libpod/options.go
index 5ad2824d9..64b425c57 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -193,6 +193,20 @@ func WithConmonEnv(environment []string) RuntimeOption {
 	}
 }
 
+// WithNetworkCmdPath specifies the path to the slirp4netns binary which manages the
+// runtime.
+func WithNetworkCmdPath(path string) RuntimeOption {
+	return func(rt *Runtime) error {
+		if rt.valid {
+			return ErrRuntimeFinalized
+		}
+
+		rt.config.NetworkCmdPath = path
+
+		return nil
+	}
+}
+
 // WithCgroupManager specifies the manager implementation name which is used to
 // handle cgroups for containers.
 // Current valid values are "cgroupfs" and "systemd".