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Commit 5f71a296 authored by Eric W. Biederman's avatar Eric W. Biederman Committed by Greg Kroah-Hartman
Browse files

kobj: Send hotplug events in the proper namespace. 



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

Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 910a7e90

lib/kobject_uevent.c

+20 −2
Original line number Diff line number Diff line
@@ -83,6 +83,22 @@ 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

 *
@@ -244,8 +260,10 @@ 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;