enhance podman network rm

when removing a podman network, we need to make sure we delete the
network interface if one was ever created (by running a container).
also, when removing networks, we check if any containers are using the
network.  if they are, we error out unless the user provides a 'force'
option which will remove the containers in question.

Signed-off-by: baude <bbaude@redhat.com>

1 files changed, 15 insertions, 1 deletions

diff --git a/pkg/network/devices.go b/pkg/network/devices.go
index 26101b6f7..85068a7d1 100644
--- a/pkg/network/devices.go
+++ b/pkg/network/devices.go
@@ -2,8 +2,10 @@ package network
 
 import (
 	"fmt"
-	"github.com/containers/libpod/pkg/util"
+	"os/exec"
 
+	"github.com/containers/libpod/pkg/util"
+	"github.com/containers/libpod/utils"
 	"github.com/sirupsen/logrus"
 )
 
@@ -39,3 +41,15 @@ func GetFreeDeviceName() (string, error) {
 	}
 	return deviceName, nil
 }
+
+// RemoveInterface removes an interface by the given name
+func RemoveInterface(interfaceName string) error {
+	// Make sure we have the ip command on the system
+	ipPath, err := exec.LookPath("ip")
+	if err != nil {
+		return err
+	}
+	// Delete the network interface
+	_, err = utils.ExecCmd(ipPath, []string{"link", "del", interfaceName}...)
+	return err
+}