From patchwork Mon Oct 11 08:37:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Westphal X-Patchwork-Id: 12549417 X-Patchwork-Delegate: paul@paul-moore.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2CC54C433EF for ; Mon, 11 Oct 2021 08:37:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0B3C360EB6 for ; Mon, 11 Oct 2021 08:37:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235105AbhJKIjf (ORCPT ); Mon, 11 Oct 2021 04:39:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47596 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234971AbhJKIje (ORCPT ); Mon, 11 Oct 2021 04:39:34 -0400 Received: from Chamillionaire.breakpoint.cc (Chamillionaire.breakpoint.cc [IPv6:2a0a:51c0:0:12e:520::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F3760C061570; Mon, 11 Oct 2021 01:37:34 -0700 (PDT) Received: from fw by Chamillionaire.breakpoint.cc with local (Exim 4.92) (envelope-from ) id 1mZqoL-0007zu-Tu; Mon, 11 Oct 2021 10:37:29 +0200 From: Florian Westphal To: selinux@vger.kernel.org Cc: paul@paul-moore.com, stephen.smalley.work@gmail.com, eparis@parisplace.org, linux-kernel@vger.kernel.org, Florian Westphal Subject: [PATCH security-next] selinux: remove ipv6 hook wrappers Date: Mon, 11 Oct 2021 10:37:17 +0200 Message-Id: <20211011083717.396885-1-fw@strlen.de> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: selinux@vger.kernel.org Netfilter places the protocol number the hook function is getting called from in state->pf, so we can use that instead of an extra wrapper. Signed-off-by: Florian Westphal --- security/selinux/hooks.c | 53 +++++++++------------------------------- 1 file changed, 12 insertions(+), 41 deletions(-) diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index e7ebd45ca345..135fb12bd894 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -5746,22 +5746,13 @@ static unsigned int selinux_ip_forward(struct sk_buff *skb, return NF_ACCEPT; } -static unsigned int selinux_ipv4_forward(void *priv, +static unsigned int selinux_hook_forward(void *priv, struct sk_buff *skb, const struct nf_hook_state *state) { - return selinux_ip_forward(skb, state->in, PF_INET); + return selinux_ip_forward(skb, state->in, state->pf); } -#if IS_ENABLED(CONFIG_IPV6) -static unsigned int selinux_ipv6_forward(void *priv, - struct sk_buff *skb, - const struct nf_hook_state *state) -{ - return selinux_ip_forward(skb, state->in, PF_INET6); -} -#endif /* IPV6 */ - static unsigned int selinux_ip_output(struct sk_buff *skb, u16 family) { @@ -5804,21 +5795,12 @@ static unsigned int selinux_ip_output(struct sk_buff *skb, return NF_ACCEPT; } -static unsigned int selinux_ipv4_output(void *priv, - struct sk_buff *skb, - const struct nf_hook_state *state) -{ - return selinux_ip_output(skb, PF_INET); -} - -#if IS_ENABLED(CONFIG_IPV6) -static unsigned int selinux_ipv6_output(void *priv, +static unsigned int selinux_hook_output(void *priv, struct sk_buff *skb, const struct nf_hook_state *state) { - return selinux_ip_output(skb, PF_INET6); + return selinux_ip_output(skb, state->pf); } -#endif /* IPV6 */ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb, int ifindex, @@ -5994,24 +5976,13 @@ static unsigned int selinux_ip_postroute(struct sk_buff *skb, return NF_ACCEPT; } -static unsigned int selinux_ipv4_postroute(void *priv, +static unsigned int selinux_hook_postroute(void *priv, struct sk_buff *skb, const struct nf_hook_state *state) { - return selinux_ip_postroute(skb, state->out, PF_INET); + return selinux_ip_postroute(skb, state->out, state->pf); } -#if IS_ENABLED(CONFIG_IPV6) -static unsigned int selinux_ipv6_postroute(void *priv, - struct sk_buff *skb, - const struct nf_hook_state *state) -{ - return selinux_ip_postroute(skb, state->out, PF_INET6); -} -#endif /* IPV6 */ - -#endif /* CONFIG_NETFILTER */ - static int selinux_netlink_send(struct sock *sk, struct sk_buff *skb) { int rc = 0; @@ -7470,38 +7441,38 @@ DEFINE_LSM(selinux) = { static const struct nf_hook_ops selinux_nf_ops[] = { { - .hook = selinux_ipv4_postroute, + .hook = selinux_hook_postroute, .pf = NFPROTO_IPV4, .hooknum = NF_INET_POST_ROUTING, .priority = NF_IP_PRI_SELINUX_LAST, }, { - .hook = selinux_ipv4_forward, + .hook = selinux_hook_forward, .pf = NFPROTO_IPV4, .hooknum = NF_INET_FORWARD, .priority = NF_IP_PRI_SELINUX_FIRST, }, { - .hook = selinux_ipv4_output, + .hook = selinux_hook_output, .pf = NFPROTO_IPV4, .hooknum = NF_INET_LOCAL_OUT, .priority = NF_IP_PRI_SELINUX_FIRST, }, #if IS_ENABLED(CONFIG_IPV6) { - .hook = selinux_ipv6_postroute, + .hook = selinux_hook_postroute, .pf = NFPROTO_IPV6, .hooknum = NF_INET_POST_ROUTING, .priority = NF_IP6_PRI_SELINUX_LAST, }, { - .hook = selinux_ipv6_forward, + .hook = selinux_hook_forward, .pf = NFPROTO_IPV6, .hooknum = NF_INET_FORWARD, .priority = NF_IP6_PRI_SELINUX_FIRST, }, { - .hook = selinux_ipv6_output, + .hook = selinux_hook_output, .pf = NFPROTO_IPV6, .hooknum = NF_INET_LOCAL_OUT, .priority = NF_IP6_PRI_SELINUX_FIRST,