From 5f71a29629b4717445f8b7f5fb8f50c2d262b68e Mon Sep 17 00:00:00 2001
From: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Tue, 4 May 2010 17:36:47 -0700
Subject: [PATCH] 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>
---
lib/kobject_uevent.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 9084f2550c2a..239c8e83fc28 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;
--
GitLab