[PATCH 36/38] kobj: Send hotplug events in the proper namespace.
in [Kernel]
|
Prev: [PATCH 22/25] tty: fix obsolete comment on tty_insert_flip_string_fixed_flag
Next: [PATCH 37/38] hotplug: netns aware uevent_helper
From: Greg Kroah-Hartman on 21 May 2010 13:00 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> Acked-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de> --- 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 9084f25..239c8e8 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -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; -- 1.7.0.3 -- 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/ |