linux-kernel - [PATCH v3 21/23] selftests/landlock: Extend tests for landlock_restrict

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Message-ID: <20241122143353.59367-22-mic@digikod.net>
Date: Fri, 22 Nov 2024 15:33:51 +0100
From: Mickaël Salaün <mic@...ikod.net>
To: Eric Paris <eparis@...hat.com>,
	Paul Moore <paul@...l-moore.com>,
	Günther Noack <gnoack@...gle.com>,
	"Serge E . Hallyn" <serge@...lyn.com>
Cc: Mickaël Salaün <mic@...ikod.net>,
	Ben Scarlato <akhna@...gle.com>,
	Casey Schaufler <casey@...aufler-ca.com>,
	Charles Zaffery <czaffery@...lox.com>,
	Francis Laniel <flaniel@...ux.microsoft.com>,
	James Morris <jmorris@...ei.org>,
	Jann Horn <jannh@...gle.com>,
	Jeff Xu <jeffxu@...gle.com>,
	Jorge Lucangeli Obes <jorgelo@...gle.com>,
	Kees Cook <kees@...nel.org>,
	Konstantin Meskhidze <konstantin.meskhidze@...wei.com>,
	Matt Bobrowski <mattbobrowski@...gle.com>,
	Mikhail Ivanov <ivanov.mikhail1@...wei-partners.com>,
	Phil Sutter <phil@....cc>,
	Praveen K Paladugu <prapal@...ux.microsoft.com>,
	Robert Salvet <robert.salvet@...lox.com>,
	Shervin Oloumi <enlightened@...gle.com>,
	Song Liu <song@...nel.org>,
	Tahera Fahimi <fahimitahera@...il.com>,
	audit@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org
Subject: [PATCH v3 21/23] selftests/landlock: Extend tests for landlock_restrict_self()'s flags

Add the restrict_self_flags test suite to check that
LANDLOCK_RESTRICT_SELF_LOGLESS is valid but not the next bit.  Some
checks are similar to restrict_self_checks_ordering's ones.

Cc: Günther Noack <gnoack@...gle.com>
Signed-off-by: Mickaël Salaün <mic@...ikod.net>
Link: https://lore.kernel.org/r/20241122143353.59367-22-mic@digikod.net
---

Changes since v2:
- New patch.
---
 tools/testing/selftests/landlock/base_test.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tools/testing/selftests/landlock/base_test.c b/tools/testing/selftests/landlock/base_test.c
index fbd687691b3c..4e0104f1efa0 100644
--- a/tools/testing/selftests/landlock/base_test.c
+++ b/tools/testing/selftests/landlock/base_test.c
@@ -233,6 +233,22 @@ TEST(restrict_self_checks_ordering)
 	ASSERT_EQ(0, close(ruleset_fd));
 }
 
+TEST(restrict_self_flags)
+{
+	ASSERT_EQ(-1, landlock_restrict_self(-1, 0));
+	ASSERT_EQ(EBADF, errno);
+
+	ASSERT_EQ(-1,
+		  landlock_restrict_self(-1, LANDLOCK_RESTRICT_SELF_LOGLESS));
+	ASSERT_EQ(EBADF, errno);
+
+	ASSERT_EQ(-1, landlock_restrict_self(-1, 1U << 1));
+	ASSERT_EQ(EINVAL, errno);
+
+	ASSERT_EQ(-1, landlock_restrict_self(-1, -1));
+	ASSERT_EQ(EINVAL, errno);
+}
+
 TEST(ruleset_fd_io)
 {
 	struct landlock_ruleset_attr ruleset_attr = {
-- 
2.47.0