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Message-Id: <6f2cbed195664cc9d50eab61ec85d457e6a3079f.1397831970.git.rgb@redhat.com> Date: Fri, 18 Apr 2014 13:34:10 -0400 From: Richard Guy Briggs <rgb@...hat.com> To: linux-audit@...hat.com, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, selinux@...ho.nsa.gov, linux-security-module@...r.kernel.org Cc: Richard Guy Briggs <rgb@...hat.com>, davem@...emloft.net, eparis@...hat.com, netfilter-devel@...r.kernel.org, hadi@...atatu.com, sgrubb@...hat.com Subject: [PATCH 6/6] audit: send multicast messages only if there are listeners Test first to see if there are any userspace multicast listeners bound to the socket before starting the multicast send work. Signed-off-by: Richard Guy Briggs <rgb@...hat.com> --- kernel/audit.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/kernel/audit.c b/kernel/audit.c index d272cc1..33531d7 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -435,6 +435,9 @@ static void kauditd_send_multicast_skb(struct sk_buff *skb) struct audit_net *aunet = net_generic(&init_net, audit_net_id); struct sock *sock = aunet->nlsk; + if (!netlink_has_listeners(sock, AUDIT_NLGRP_READLOG)) + return; + /* * The seemingly wasteful skb_copy() rather than bumping the refcount * using skb_get() is necessary because non-standard mods are made to -- 1.7.1 -- 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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