[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 --- 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(_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 majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[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 r...@redhat.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 majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 6/6] audit: send multicast messages only if there are listeners
From: Richard Guy Briggs 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 --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
