From: Richard Guy Briggs <rgb@redhat.com>
To: linux-audit@redhat.com
Cc: Richard Guy Briggs <rbriggs@redhat.com>
Subject: [PATCH 6/6] audit: send multicast messages only if there are listeners
Date: Thu, 24 Jan 2013 13:15:15 -0500 [thread overview]
Message-ID: <1359051315-20905-7-git-send-email-rgb@redhat.com> (raw)
In-Reply-To: <1359051315-20905-1-git-send-email-rgb@redhat.com>
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 <rbriggs@redhat.com>
---
kernel/audit.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/audit.c b/kernel/audit.c
index 9eef05b..d153a6b 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -428,6 +428,8 @@ 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
--
1.8.0.2
next prev parent reply other threads:[~2013-01-24 18:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-24 18:15 [PATCH 0/6] audit: add restricted capability read-only netlink multicast socket Richard Guy Briggs
2013-01-24 18:15 ` [PATCH 1/6] audit: refactor hold queue flush Richard Guy Briggs
2013-01-24 18:15 ` [PATCH 2/6] audit: flatten kauditd_thread wait queue code Richard Guy Briggs
2013-01-24 18:15 ` [PATCH 3/6] audit: move kaudit thread start from auditd registration to kaudit init Richard Guy Briggs
2013-01-24 18:15 ` [PATCH 4/6] netlink: add send and receive capability requirement and capability flags Richard Guy Briggs
2013-01-24 18:15 ` [PATCH 5/6] audit: add restricted capability read-only netlink multicast socket Richard Guy Briggs
2013-01-24 18:15 ` Richard Guy Briggs [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-03-24 18:34 [PATCH] netlink: have netlink per-protocol bind function return an error code Richard Guy Briggs
2014-04-18 17:34 ` [PATCH 0/6] audit: implement multicast socket for journald Richard Guy Briggs
2014-04-18 17:34 ` [PATCH 6/6] audit: send multicast messages only if there are listeners Richard Guy Briggs
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