linux-kernel - [PATCH v2 03/10] selftests/landlock: Extend tests for minimal valid attribute size

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Message-Id: <20220506160820.524344-4-mic@digikod.net>
Date:   Fri,  6 May 2022 18:08:13 +0200
From:   Mickaël Salaün <mic@...ikod.net>
To:     James Morris <jmorris@...ei.org>,
        "Serge E . Hallyn" <serge@...lyn.com>
Cc:     Mickaël Salaün <mic@...ikod.net>,
        Jann Horn <jannh@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Konstantin Meskhidze <konstantin.meskhidze@...wei.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Paul Moore <paul@...l-moore.com>,
        Shuah Khan <shuah@...nel.org>, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org
Subject: [PATCH v2 03/10] selftests/landlock: Extend tests for minimal valid attribute size

This might be useful when the struct landlock_ruleset_attr will get more
fields.

Cc: Shuah Khan <shuah@...nel.org>
Signed-off-by: Mickaël Salaün <mic@...ikod.net>
Link: https://lore.kernel.org/r/20220506160820.524344-4-mic@digikod.net
---

Changes since v1:
* Format with clang-format and rebase.
---
 tools/testing/selftests/landlock/base_test.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/testing/selftests/landlock/base_test.c b/tools/testing/selftests/landlock/base_test.c
index 3faeae4233a4..be9b937256ac 100644
--- a/tools/testing/selftests/landlock/base_test.c
+++ b/tools/testing/selftests/landlock/base_test.c
@@ -35,6 +35,8 @@ TEST(inconsistent_attr)
 	ASSERT_EQ(EINVAL, errno);
 	ASSERT_EQ(-1, landlock_create_ruleset(ruleset_attr, 1, 0));
 	ASSERT_EQ(EINVAL, errno);
+	ASSERT_EQ(-1, landlock_create_ruleset(ruleset_attr, 7, 0));
+	ASSERT_EQ(EINVAL, errno);
 
 	ASSERT_EQ(-1, landlock_create_ruleset(NULL, 1, 0));
 	/* The size if less than sizeof(struct landlock_attr_enforce). */
@@ -47,6 +49,9 @@ TEST(inconsistent_attr)
 	ASSERT_EQ(-1, landlock_create_ruleset(ruleset_attr, page_size + 1, 0));
 	ASSERT_EQ(E2BIG, errno);
 
+	/* Checks minimal valid attribute size. */
+	ASSERT_EQ(-1, landlock_create_ruleset(ruleset_attr, 8, 0));
+	ASSERT_EQ(ENOMSG, errno);
 	ASSERT_EQ(-1, landlock_create_ruleset(
 			      ruleset_attr,
 			      sizeof(struct landlock_ruleset_attr), 0));
-- 
2.35.1