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authorDaniel Lezcano <dlezcano@fr.ibm.com>2008-11-25 16:46:37 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-25 16:46:37 -0800
commit09bb52175bf4d6a46fc8502e76be29206d9a677a (patch)
tree93053a60197f03f66a7089fbf88f64ee93a955b8
parentcb13fc209f5c9394713319323166f74b01759ead (diff)
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>
-rw-r--r--net/core/net-sysfs.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index afd42d71732..6ac29a46e23 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -427,6 +427,9 @@ static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
struct net_device *dev = to_net_dev(d);
int retval;
+ if (!net_eq(dev_net(dev), &init_net))
+ return 0;
+
/* pass interface to uevent. */
retval = add_uevent_var(env, "INTERFACE=%s", dev->name);
if (retval)