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Date: Tue, 8 Sep 2015 22:10:28 -0400 From: "Michael J. Coss" <michael.coss@...atel-lucent.com> To: gregkh@...uxfoundation.org, davem@...emloft.net, linux-kernel@...r.kernel.org, containers@...ts.linuxcontainers.org Cc: serge.hallyn@...ntu.com, stgraber@...ntu.com, "Michael J. Coss" <michael.coss@...atel-lucent.com> Subject: [PATCH 1/3] lib/kobject_uevent.c: disable broadcast of uevents to other namespaces Restrict sending uevents to only those listeners operating in the same network namespace as the system init process. This is the first step toward allowing policy control of the forwarding of events to other namespaces in userspace. Signed-off-by: Michael J. Coss <michael.coss@...atel-lucent.com> --- lib/kobject_uevent.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c index f6c2c1e..d791e33 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -295,6 +295,10 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, if (!netlink_has_listeners(uevent_sock, 1)) continue; + /* forward event only to the host systems network namespaces */ + if (!net_eq(sock_net(uevent_sock), &init_net)) + continue; + /* allocate message with the maximum possible size */ len = strlen(action_string) + strlen(devpath) + 2; skb = alloc_skb(len + env->buflen, GFP_KERNEL); -- 2.4.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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