[PATCH 4/6] kobj: Send hotplug events in the proper namespace.
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From: Eric W. Biederman on 4 May 2010 20:40 From: Eric W. Biederman <ebiederm(a)xmission.com> Utilize netlink_broacast_filtered to allow sending hotplug events in the proper namespace. Signed-off-by: Eric W. Biederman <ebiederm(a)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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |