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Date: Wed, 19 Feb 2014 13:08:23 -0500 From: Richard Guy Briggs <rgb@...hat.com> To: netdev@....sgi.com, davem@...emloft.net, linux-audit@...hat.com, linux-kernel@...r.kernel.org Cc: Richard Guy Briggs <rgb@...hat.com>, Eric Paris <eparis@...hat.com>, Steve Grubb <sgrubb@...hat.com> Subject: [PATCH 5/5] 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 | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/kernel/audit.c b/kernel/audit.c index 0da57b6..6e8d137 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -434,6 +434,8 @@ static void kauditd_send_multicast_skb(struct sk_buff *skb) struct sk_buff *copy; struct nlmsghdr *nlh; + if (!netlink_has_listeners(audit_sock, AUDIT_NLGRP_READLOG)) + return; /* * The seemingly wasteful skb_copy() is necessary because the original * kaudit unicast socket sends up messages with nlmsg_len set to the -- 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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