ps: support the container notation for ps --filter network=...

Signed-off-by: flouthoc <flouthoc.git@gmail.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/libpod/container.go b/libpod/container.go
index 4b9bea5fc..f3f4b27b7 100644
--- a/libpod/container.go
+++ b/libpod/container.go
@@ -1173,6 +1173,46 @@ func (c *Container) Networks() ([]string, bool, error) {
 	return c.networks()
 }
 
+// NetworkMode gets the configured network mode for the container.
+// Get actual value from the database
+func (c *Container) NetworkMode() string {
+	networkMode := ""
+	ctrSpec := c.config.Spec
+
+	switch {
+	case c.config.CreateNetNS:
+		// We actually store the network
+		// mode for Slirp and Bridge, so
+		// we can just use that
+		networkMode = string(c.config.NetMode)
+	case c.config.NetNsCtr != "":
+		networkMode = fmt.Sprintf("container:%s", c.config.NetNsCtr)
+	default:
+		// Find the spec's network namespace.
+		// If there is none, it's host networking.
+		// If there is one and it has a path, it's "ns:".
+		foundNetNS := false
+		for _, ns := range ctrSpec.Linux.Namespaces {
+			if ns.Type == spec.NetworkNamespace {
+				foundNetNS = true
+				if ns.Path != "" {
+					networkMode = fmt.Sprintf("ns:%s", ns.Path)
+				} else {
+					// We're making a network ns,  but not
+					// configuring with Slirp or CNI. That
+					// means it's --net=none
+					networkMode = "none"
+				}
+				break
+			}
+		}
+		if !foundNetNS {
+			networkMode = "host"
+		}
+	}
+	return networkMode
+}
+
 // Unlocked accessor for networks
 func (c *Container) networks() ([]string, bool, error) {
 	networks, err := c.runtime.state.GetNetworks(c)