From patchwork Wed Aug 14 03:01:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mikhail Ivanov X-Patchwork-Id: 13762784 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DFF598485; Wed, 14 Aug 2024 03:02:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.190 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723604532; cv=none; b=jaILJno+Hd82RsMs2o+X/zGgSw7fBA4BxHd/n/Y70daGcFg4RWAqpBKyi+Jcn5qntZSUC2GJG04sS+rQYcTFzgLhWeJwiUT7Wj6in+uA7EETMLFdlnPVh35wX0BGPC5zw8fvNACIwbEJ1Oon3qp22UO1wYVd2ukqJLK0rSoS0Tw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723604532; c=relaxed/simple; bh=T1d68LYJQ5PF2V9H1ruSPor7SPuyYu1pjOYSMUxNP3E=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=aleYE/U4Y1zTs9v0x8meB5zydh5TFASX+9oV2OxwaypRDQ9IUhkXqemLkNj8pPVJLaE4O5y3l+IesJYJfHf2moShiD18cGkuG1HYO0bYT3/4c6feuetfZKmjH1fI8/SiG6cg7tBIO+dRVGcrkHRqsRpxGNkJ4ctnO3dx+ksDGVU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei-partners.com; spf=pass smtp.mailfrom=huawei-partners.com; arc=none smtp.client-ip=45.249.212.190 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei-partners.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei-partners.com Received: from mail.maildlp.com (unknown [172.19.162.112]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4WkCbf3v9xz20l6c; Wed, 14 Aug 2024 10:57:34 +0800 (CST) Received: from dggpemm500020.china.huawei.com (unknown [7.185.36.49]) by mail.maildlp.com (Postfix) with ESMTPS id 2A5531402CF; Wed, 14 Aug 2024 11:02:08 +0800 (CST) Received: from mscphis02103.huawei.com (10.123.65.215) by dggpemm500020.china.huawei.com (7.185.36.49) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Wed, 14 Aug 2024 11:02:06 +0800 From: Mikhail Ivanov To: CC: , , , , , , , Subject: [RFC PATCH v2 4/9] selftests/landlock: Test listening restriction Date: Wed, 14 Aug 2024 11:01:46 +0800 Message-ID: <20240814030151.2380280-5-ivanov.mikhail1@huawei-partners.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240814030151.2380280-1-ivanov.mikhail1@huawei-partners.com> References: <20240814030151.2380280-1-ivanov.mikhail1@huawei-partners.com> Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: mscpeml500004.china.huawei.com (7.188.26.250) To dggpemm500020.china.huawei.com (7.185.36.49) Add a test for listening restriction. It's similar to protocol.bind and protocol.connect tests. Signed-off-by: Mikhail Ivanov --- tools/testing/selftests/landlock/net_test.c | 44 +++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/tools/testing/selftests/landlock/net_test.c b/tools/testing/selftests/landlock/net_test.c index 8126f5c0160f..b6fe9bde205f 100644 --- a/tools/testing/selftests/landlock/net_test.c +++ b/tools/testing/selftests/landlock/net_test.c @@ -689,6 +689,50 @@ TEST_F(protocol, connect) restricted, restricted); } +TEST_F(protocol, listen) +{ + if (variant->sandbox == TCP_SANDBOX) { + const struct landlock_ruleset_attr ruleset_attr = { + .handled_access_net = ACCESS_ALL, + }; + const struct landlock_net_port_attr tcp_not_restricted_p0 = { + .allowed_access = ACCESS_ALL, + .port = self->srv0.port, + }; + const struct landlock_net_port_attr tcp_denied_listen_p1 = { + .allowed_access = ACCESS_ALL & + ~LANDLOCK_ACCESS_NET_LISTEN_TCP, + .port = self->srv1.port, + }; + int ruleset_fd; + + ruleset_fd = landlock_create_ruleset(&ruleset_attr, + sizeof(ruleset_attr), 0); + ASSERT_LE(0, ruleset_fd); + + /* Allows all actions for the first port. */ + ASSERT_EQ(0, + landlock_add_rule(ruleset_fd, LANDLOCK_RULE_NET_PORT, + &tcp_not_restricted_p0, 0)); + + /* Allows all actions despite listen. */ + ASSERT_EQ(0, + landlock_add_rule(ruleset_fd, LANDLOCK_RULE_NET_PORT, + &tcp_denied_listen_p1, 0)); + + enforce_ruleset(_metadata, ruleset_fd); + EXPECT_EQ(0, close(ruleset_fd)); + } + bool restricted = is_restricted(&variant->prot, variant->sandbox); + + test_restricted_net_fixture(_metadata, &self->srv0, false, false, + false); + test_restricted_net_fixture(_metadata, &self->srv1, false, false, + restricted); + test_restricted_net_fixture(_metadata, &self->srv2, restricted, + restricted, restricted); +} + TEST_F(protocol, bind_unspec) { const struct landlock_ruleset_attr ruleset_attr = {