linux-kernel - [PATCH 5.18 779/879] selftests/landlock: Extend tests for minimal valid attribute size

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Date:   Tue,  7 Jun 2022 19:04:57 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Shuah Khan <shuah@...nel.org>,
        Mickaël Salaün <mic@...ikod.net>
Subject: [PATCH 5.18 779/879] selftests/landlock: Extend tests for minimal valid attribute size

From: Mickaël Salaün <mic@...ikod.net>

commit 291865bd7e8bb4b4033d341fa02dafa728e6378c upstream.

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

Cc: Shuah Khan <shuah@...nel.org>
Link: https://lore.kernel.org/r/20220506160820.524344-4-mic@digikod.net
Cc: stable@...r.kernel.org
Signed-off-by: Mickaël Salaün <mic@...ikod.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 tools/testing/selftests/landlock/base_test.c |    5 +++++
 1 file changed, 5 insertions(+)

--- 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));