linux-kernel - [PATCH ghak25 v2 7/9] netfilter: ebtables audit table registration

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Message-Id: <9f16dee52bac9a3068939283a0122a632ee0438d.1577830902.git.rgb@redhat.com>
Date:   Mon,  6 Jan 2020 13:54:08 -0500
From:   Richard Guy Briggs <rgb@...hat.com>
To:     Linux-Audit Mailing List <linux-audit@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        netfilter-devel@...r.kernel.org
Cc:     Paul Moore <paul@...l-moore.com>, sgrubb@...hat.com,
        omosnace@...hat.com, fw@...len.de, twoerner@...hat.com,
        eparis@...isplace.org, ebiederm@...ssion.com, tgraf@...radead.org,
        Richard Guy Briggs <rgb@...hat.com>
Subject: [PATCH ghak25 v2 7/9] netfilter: ebtables audit table registration

Generate audit NETFILTER_CFG records on ebtables table registration.

Previously this was only being done for all x_tables operations and
ebtables table replacement.

Call new audit_nf_cfg() to store table parameters for later use with
syscall records.

Here is a sample accompanied record:
  type=NETFILTER_CFG msg=audit(1494907217.558:5403): table=filter family=7 entries=0

See: https://github.com/linux-audit/audit-kernel/issues/43
Signed-off-by: Richard Guy Briggs <rgb@...hat.com>
---
 net/bridge/netfilter/ebtables.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 57dc11c0f349..58126547b175 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1219,6 +1219,8 @@ int ebt_register_table(struct net *net, const struct ebt_table *input_table,
 		*res = NULL;
 	}
 
+	if (audit_enabled)
+		audit_nf_cfg(repl->name, AF_BRIDGE, repl->nentries);
 	return ret;
 free_unlock:
 	mutex_unlock(&ebt_mutex);
-- 
1.8.3.1