From patchwork Mon May 16 15:20:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Konstantin Meskhidze (A)" X-Patchwork-Id: 12850980 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 88DE9C433F5 for ; Mon, 16 May 2022 15:21:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245237AbiEPPVj (ORCPT ); Mon, 16 May 2022 11:21:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245275AbiEPPVJ (ORCPT ); Mon, 16 May 2022 11:21:09 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A4CE43BA67; Mon, 16 May 2022 08:21:05 -0700 (PDT) Received: from fraeml704-chm.china.huawei.com (unknown [172.18.147.206]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4L22tz3lCvz6H7Ht; Mon, 16 May 2022 23:18:03 +0800 (CST) Received: from mscphispre00059.huawei.com (10.123.71.64) by fraeml704-chm.china.huawei.com (10.206.15.53) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2375.24; Mon, 16 May 2022 17:21:03 +0200 From: Konstantin Meskhidze To: CC: , , , , , Subject: [PATCH v5 12/15] seltests/landlock: rules overlapping test Date: Mon, 16 May 2022 23:20:35 +0800 Message-ID: <20220516152038.39594-13-konstantin.meskhidze@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220516152038.39594-1-konstantin.meskhidze@huawei.com> References: <20220516152038.39594-1-konstantin.meskhidze@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.123.71.64] X-ClientProxiedBy: mscpeml500001.china.huawei.com (7.188.26.142) To fraeml704-chm.china.huawei.com (10.206.15.53) X-CFilter-Loop: Reflected Precedence: bulk List-ID: This patch adds overlapping rules for one port. First rule adds just bind() access right for a port. The second one adds both bind() and connect() access rights for the same port. Signed-off-by: Konstantin Meskhidze --- Changes since v3: * Add ruleset_overlap test. Changes since v4: * Refactoring code with self->port, self->addr4 variables. --- tools/testing/selftests/landlock/net_test.c | 51 +++++++++++++++++++++ 1 file changed, 51 insertions(+) -- 2.25.1 diff --git a/tools/testing/selftests/landlock/net_test.c b/tools/testing/selftests/landlock/net_test.c index bf8e49466d1d..1d8c9dfdbd48 100644 --- a/tools/testing/selftests/landlock/net_test.c +++ b/tools/testing/selftests/landlock/net_test.c @@ -677,4 +677,55 @@ TEST_F_FORK(socket_test, connect_afunspec_with_restictions) { ASSERT_EQ(1, WIFEXITED(status)); ASSERT_EQ(EXIT_SUCCESS, WEXITSTATUS(status)); } + +TEST_F_FORK(socket_test, ruleset_overlap) { + + int sockfd; + + struct landlock_ruleset_attr ruleset_attr = { + .handled_access_net = LANDLOCK_ACCESS_NET_BIND_TCP | + LANDLOCK_ACCESS_NET_CONNECT_TCP, + }; + struct landlock_net_service_attr net_service_1 = { + .allowed_access = LANDLOCK_ACCESS_NET_BIND_TCP, + + .port = self->port[0], + }; + + struct landlock_net_service_attr net_service_2 = { + .allowed_access = LANDLOCK_ACCESS_NET_BIND_TCP | + LANDLOCK_ACCESS_NET_CONNECT_TCP, + + .port = self->port[0], + }; + + const int ruleset_fd = landlock_create_ruleset(&ruleset_attr, + sizeof(ruleset_attr), 0); + ASSERT_LE(0, ruleset_fd); + + /* Allows bind operations to the port[0] socket */ + ASSERT_EQ(0, landlock_add_rule(ruleset_fd, LANDLOCK_RULE_NET_SERVICE, + &net_service_1, 0)); + /* Allows connect and bind operations to the port[0] socket */ + ASSERT_EQ(0, landlock_add_rule(ruleset_fd, LANDLOCK_RULE_NET_SERVICE, + &net_service_2, 0)); + + /* Enforces the ruleset. */ + enforce_ruleset(_metadata, ruleset_fd); + + /* Creates a server socket */ + sockfd = create_socket(_metadata, false, false); + ASSERT_LE(0, sockfd); + + /* Binds the socket to address with port[0] */ + ASSERT_EQ(0, bind(sockfd, (struct sockaddr *)&self->addr4[0], sizeof(self->addr4[0]))); + + /* Makes connection to socket with port[0] */ + ASSERT_EQ(0, connect(sockfd, (struct sockaddr *)&self->addr4[0], + sizeof(self->addr4[0]))); + + /* Closes socket */ + ASSERT_EQ(0, close(sockfd)); +} + TEST_HARNESS_MAIN