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Subject[PATCH 4/6] kobj: Send hotplug events in the proper namespace.
From: Eric W. Biederman <ebiederm@xmission.com>

Utilize netlink_broacast_filtered to allow sending hotplug events
in the proper namespace.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
lib/kobject_uevent.c | 22 ++++++++++++++++++++--
1 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 3f5f17b..9057ec1 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -82,6 +82,22 @@ out:
return ret;
}

+static int kobj_bcast_filter(struct sock *dsk, struct sk_buff *skb, void *data)
+{
+ struct kobject *kobj = data;
+ const struct kobj_ns_type_operations *ops;
+
+ ops = kobj_ns_ops(kobj);
+ if (ops) {
+ const void *sock_ns, *ns;
+ ns = kobj->ktype->namespace(kobj);
+ sock_ns = ops->netlink_ns(dsk);
+ return sock_ns != ns;
+ }
+
+ return 0;
+}
+
/**
* kobject_uevent_env - send an uevent with environmental data
*
@@ -243,8 +259,10 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
}

NETLINK_CB(skb).dst_group = 1;
- retval = netlink_broadcast(uevent_sock, skb, 0, 1,
- GFP_KERNEL);
+ retval = netlink_broadcast_filtered(uevent_sock, skb,
+ 0, 1, GFP_KERNEL,
+ kobj_bcast_filter,
+ kobj);
/* ENOBUFS should be handled in userspace */
if (retval == -ENOBUFS)
retval = 0;
--
1.6.5.2.143.g8cc62


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