netns: filter out uevent not belonging to init_net
This patch will filter out the uevent not related to the init_net. Without this patch if a network device is created in a network namespace with the same name as one network device belonging to the initial network namespace (eg. eth0), when the network namespace will die and the network device will be destroyed, an event will be sent and catched by the udevd daemon. That will result to have the real network device to be shutdown because the udevd/uevent are not namespace aware. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -427,6 +427,9 @@ static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
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struct net_device *dev = to_net_dev(d);
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struct net_device *dev = to_net_dev(d);
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int retval;
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int retval;
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if (!net_eq(dev_net(dev), &init_net))
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return 0;
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/* pass interface to uevent. */
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/* pass interface to uevent. */
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retval = add_uevent_var(env, "INTERFACE=%s", dev->name);
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retval = add_uevent_var(env, "INTERFACE=%s", dev->name);
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if (retval)
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if (retval)
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