netdev - [RFC PATCH v3 06/19] selftests/landlock: Test adding a rule for unhandled access

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Message-ID: <20240904104824.1844082-7-ivanov.mikhail1@huawei-partners.com>
Date: Wed, 4 Sep 2024 18:48:11 +0800
From: Mikhail Ivanov <ivanov.mikhail1@...wei-partners.com>
To: <mic@...ikod.net>
CC: <willemdebruijn.kernel@...il.com>, <gnoack3000@...il.com>,
	<linux-security-module@...r.kernel.org>, <netdev@...r.kernel.org>,
	<netfilter-devel@...r.kernel.org>, <yusongping@...wei.com>,
	<artem.kuzin@...wei.com>, <konstantin.meskhidze@...wei.com>
Subject: [RFC PATCH v3 06/19] selftests/landlock: Test adding a rule for unhandled access

Add test that validates behaviour of Landlock after rule with
unhandled access is added.

Signed-off-by: Mikhail Ivanov <ivanov.mikhail1@...wei-partners.com>
---
Changes since v2:
* Replaces EXPECT_EQ with ASSERT_EQ for close().
* Refactors commit title and message.

Changes since v1:
* Refactors commit message.
---
 .../testing/selftests/landlock/socket_test.c  | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/tools/testing/selftests/landlock/socket_test.c b/tools/testing/selftests/landlock/socket_test.c
index 811bdaa95a7a..d2fedfca7193 100644
--- a/tools/testing/selftests/landlock/socket_test.c
+++ b/tools/testing/selftests/landlock/socket_test.c
@@ -351,4 +351,37 @@ TEST_F(protocol, rule_with_unknown_access)
 	ASSERT_EQ(0, close(ruleset_fd));
 }
 
+TEST_F(protocol, rule_with_unhandled_access)
+{
+	struct landlock_ruleset_attr ruleset_attr = {
+		.handled_access_socket = LANDLOCK_ACCESS_SOCKET_CREATE,
+	};
+	struct landlock_socket_attr protocol = {
+		.family = self->prot.family,
+		.type = self->prot.type,
+	};
+	int ruleset_fd;
+	__u64 access;
+
+	ruleset_fd =
+		landlock_create_ruleset(&ruleset_attr, sizeof(ruleset_attr), 0);
+	ASSERT_LE(0, ruleset_fd);
+
+	for (access = 1; access > 0; access <<= 1) {
+		int err;
+
+		protocol.allowed_access = access;
+		err = landlock_add_rule(ruleset_fd, LANDLOCK_RULE_SOCKET,
+					&protocol, 0);
+		if (access == ruleset_attr.handled_access_socket) {
+			EXPECT_EQ(0, err);
+		} else {
+			EXPECT_EQ(-1, err);
+			EXPECT_EQ(EINVAL, errno);
+		}
+	}
+
+	ASSERT_EQ(0, close(ruleset_fd));
+}
+
 TEST_HARNESS_MAIN
-- 
2.34.1