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kobj: Send hotplug events in the proper namespace. 

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

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Eric W. Biederman 2010-05-04 17:36:47 -07:00 committed by Greg Kroah-Hartman
parent 910a7e905f
commit 5f71a29629
1 changed files with 20 additions and 2 deletions
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22
lib/kobject_uevent.c
View File

@ -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;