python3: Add support for wlan device add

With this change it's now possible to add wlan devices to the container. This will track down the right phy device, move it to the right namespace (we don't care about its name), then if the user asked for a new device name for the actual interface, we attach to the container and rename the interface in there using attach. I have tested this to work with both Intel and Atheros NICs. This patch is based on the one provided to lxc-devel by Gregor Beck and has then been updated to do the device renaming as well as minor code style changes. Thanks! Reported-by: Gregor Beck <gbeck@sernet.de> Signed-off-by: Stéphane Graber <stgraber@ubuntu.com> Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

python3: Add support for wlan device add
00903d7d · Stéphane Graber · 23b116e3 · 00903d7d
Commit 00903d7d authored Feb 25, 2014 by Stéphane Graber
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__init__.py src/python-lxc/lxc/__init__.py +20 -0

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--- a/src/python-lxc/lxc/__init__.py
+++ b/src/python-lxc/lxc/__init__.py
@@ -160,6 +160,26 @@ class Container(_lxc.Container):
        if not self.running:
            return False

+        if os.path.exists("/sys/class/net/%s/phy80211/name" % name):
+            with open("/sys/class/net/%s/phy80211/name" % name) as fd:
+                phy = fd.read().strip()
+
+            if subprocess.call(['iw', 'phy', phy, 'set', 'netns',
+                                str(self.init_pid)]) != 0:
+                return False
+
+            if destname:
+                def rename_interface(args):
+                    old, new = args
+
+                    return subprocess.call(['ip', 'link', 'set',
+                                            'dev', old, 'name', new])
+
+                return self.attach_wait(rename_interface, (name, destname),
+                                        namespaces=(CLONE_NEWNET)) == 0
+
+            return True
+
        if not destname:
            destname = name