From patchwork Mon Apr 8 09:39:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivanov Mikhail X-Patchwork-Id: 13620903 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (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 9E5A2482E9; Mon, 8 Apr 2024 09:40:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712569224; cv=none; b=HhW7ivmj6gnWKdt+sis8c/KQ5waQc99/MKINceZQWfLQbRRP8EzZJheyCYWAWC4i1w3DjhKdYeUpgq4diGrzDM6+xT4b204C0AqACdZNqSswZyJLJpmfZhECJBgma/0MImU/ss6pkQOz7HVvqoTYqswYs9K7OL3Fx5As9kYHwio= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712569224; c=relaxed/simple; bh=JrikPBy7AnB+J5XvO4rxiRuxdBWn74dh3dvl28232M4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=DPeaHKpmXZJZY/epWyFCVjrVeGvI9TcQ/GBibsNdOuXj+3Cc+qD5UJnAIhMnN2YZbW0xWcpnFfkdyQeTKyTVG+f8kRcEG2EjeF1SxCcOcUIZb0coSSYaUq3nuszzwgJvBle7keg+YvX6MupmzcnVuIKzrlpKWJILPj3LkUG4i5o= 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=45.249.212.191 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 [172.19.88.163]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4VCkXB4dzXz1h64n; Mon, 8 Apr 2024 17:37:30 +0800 (CST) Received: from dggpemm500020.china.huawei.com (unknown [7.185.36.49]) by mail.maildlp.com (Postfix) with ESMTPS id 8D62F18005F; Mon, 8 Apr 2024 17:40:20 +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 15.1.2507.35; Mon, 8 Apr 2024 17:40:18 +0800 From: Ivanov Mikhail To: CC: , , , , , , , Subject: [RFC PATCH v1 08/10] selftests/landlock: Create 'ruleset_overlap' test Date: Mon, 8 Apr 2024 17:39:25 +0800 Message-ID: <20240408093927.1759381-9-ivanov.mikhail1@huawei-partners.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240408093927.1759381-1-ivanov.mikhail1@huawei-partners.com> References: <20240408093927.1759381-1-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: mscpeml100003.china.huawei.com (10.199.174.67) To dggpemm500020.china.huawei.com (7.185.36.49) Add tcp_layers fixture for tests that check multiple layer configuration scenarios. Add test that validates multiple layer behavior with overlapped restrictions. Signed-off-by: Ivanov Mikhail Reviewed-by: Konstantin Meskhidze --- .../testing/selftests/landlock/socket_test.c | 107 ++++++++++++++++++ 1 file changed, 107 insertions(+) diff --git a/tools/testing/selftests/landlock/socket_test.c b/tools/testing/selftests/landlock/socket_test.c index dd105489d..07f73618d 100644 --- a/tools/testing/selftests/landlock/socket_test.c +++ b/tools/testing/selftests/landlock/socket_test.c @@ -316,4 +316,111 @@ TEST_F(protocol, inval) &protocol, 0)); } +FIXTURE(tcp_layers) +{ + struct service_fixture srv0; +}; + +FIXTURE_VARIANT(tcp_layers) +{ + const size_t num_layers; +}; + +FIXTURE_SETUP(tcp_layers) +{ + const struct protocol_variant prot = { + .domain = AF_INET, + .type = SOCK_STREAM, + }; + + disable_caps(_metadata); + self->srv0.protocol = prot; + setup_namespace(_metadata); +}; + +FIXTURE_TEARDOWN(tcp_layers) +{ +} + +/* clang-format off */ +FIXTURE_VARIANT_ADD(tcp_layers, no_sandbox_with_ipv4) { + /* clang-format on */ + .num_layers = 0, +}; + +/* clang-format off */ +FIXTURE_VARIANT_ADD(tcp_layers, one_sandbox_with_ipv4) { + /* clang-format on */ + .num_layers = 1, +}; + +/* clang-format off */ +FIXTURE_VARIANT_ADD(tcp_layers, two_sandboxes_with_ipv4) { + /* clang-format on */ + .num_layers = 2, +}; + +/* clang-format off */ +FIXTURE_VARIANT_ADD(tcp_layers, three_sandboxes_with_ipv4) { + /* clang-format on */ + .num_layers = 3, +}; + +TEST_F(tcp_layers, ruleset_overlap) +{ + const struct landlock_ruleset_attr ruleset_attr = { + .handled_access_socket = LANDLOCK_ACCESS_SOCKET_CREATE, + }; + const struct landlock_socket_attr tcp_create = { + .allowed_access = LANDLOCK_ACCESS_SOCKET_CREATE, + .domain = self->srv0.protocol.domain, + .type = self->srv0.protocol.type, + }; + + if (variant->num_layers >= 1) { + int ruleset_fd; + + ruleset_fd = landlock_create_ruleset(&ruleset_attr, + sizeof(ruleset_attr), 0); + ASSERT_LE(0, ruleset_fd); + + /* Allows create. */ + ASSERT_EQ(0, + landlock_add_rule(ruleset_fd, LANDLOCK_RULE_SOCKET, + &tcp_create, 0)); + enforce_ruleset(_metadata, ruleset_fd); + EXPECT_EQ(0, close(ruleset_fd)); + } + + if (variant->num_layers >= 2) { + int ruleset_fd; + + /* Creates another ruleset layer with denied create. */ + ruleset_fd = landlock_create_ruleset(&ruleset_attr, + sizeof(ruleset_attr), 0); + ASSERT_LE(0, ruleset_fd); + + enforce_ruleset(_metadata, ruleset_fd); + EXPECT_EQ(0, close(ruleset_fd)); + } + + if (variant->num_layers >= 3) { + int ruleset_fd; + + /* Creates another ruleset layer. */ + ruleset_fd = landlock_create_ruleset(&ruleset_attr, + sizeof(ruleset_attr), 0); + ASSERT_LE(0, ruleset_fd); + + /* Try to allow create second time. */ + ASSERT_EQ(0, + landlock_add_rule(ruleset_fd, LANDLOCK_RULE_SOCKET, + &tcp_create, 0)); + enforce_ruleset(_metadata, ruleset_fd); + EXPECT_EQ(0, close(ruleset_fd)); + } + + test_socket_create(_metadata, &self->srv0, variant->num_layers >= 2); +} + TEST_HARNESS_MAIN