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[87.106.108.193]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4854b6756e4sm438028185e9.15.2026.03.15.15.23.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Mar 2026 15:23:00 -0700 (PDT) From: =?UTF-8?q?G=C3=BCnther=20Noack?= To: =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= , "John Johansen" Cc: =?UTF-8?q?G=C3=BCnther=20Noack?= , linux-security-module@vger.kernel.org, "Tingmao Wang" , "Justin Suess" , "Samasth Norway Ananda" , "Matthieu Buffet" , "Mikhail Ivanov" , konstantin.meskhidze@huawei.com, "Demi Marie Obenour" , "Alyssa Ross" , "Jann Horn" , "Tahera Fahimi" , Sebastian Andrzej Siewior , "Kuniyuki Iwashima" Subject: [PATCH v6 6/9] landlock/selftests: Audit test for LANDLOCK_ACCESS_FS_RESOLVE_UNIX Date: Sun, 15 Mar 2026 23:21:47 +0100 Message-ID: <20260315222150.121952-7-gnoack3000@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260315222150.121952-1-gnoack3000@gmail.com> References: <20260315222150.121952-1-gnoack3000@gmail.com> Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add an audit test to check that Landlock denials from LANDLOCK_ACCESS_FS_RESOLVE_UNIX result in audit logs in the expected format. (There is one audit test for each filesystem access right, so we should add one for LANDLOCK_ACCESS_FS_RESOLVE_UNIX as well.) Signed-off-by: Günther Noack --- tools/testing/selftests/landlock/fs_test.c | 43 +++++++++++++++++++++- 1 file changed, 42 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/landlock/fs_test.c b/tools/testing/selftests/landlock/fs_test.c index fdbb024da774..4198148e172f 100644 --- a/tools/testing/selftests/landlock/fs_test.c +++ b/tools/testing/selftests/landlock/fs_test.c @@ -7538,7 +7538,8 @@ static const __u64 access_fs_16 = LANDLOCK_ACCESS_FS_MAKE_SYM | LANDLOCK_ACCESS_FS_REFER | LANDLOCK_ACCESS_FS_TRUNCATE | - LANDLOCK_ACCESS_FS_IOCTL_DEV; + LANDLOCK_ACCESS_FS_IOCTL_DEV | + LANDLOCK_ACCESS_FS_RESOLVE_UNIX; /* clang-format on */ TEST_F(audit_layout1, execute_read) @@ -7983,6 +7984,46 @@ TEST_F(audit_layout1, ioctl_dev) EXPECT_EQ(1, records.domain); } +TEST_F(audit_layout1, resolve_unix) +{ + struct audit_records records; + const char *const path = "sock"; + int srv_fd, cli_fd, status; + pid_t child_pid; + + srv_fd = set_up_named_unix_server(_metadata, SOCK_STREAM, path); + + child_pid = fork(); + ASSERT_LE(0, child_pid); + if (!child_pid) { + drop_access_rights(_metadata, + &(struct landlock_ruleset_attr){ + .handled_access_fs = access_fs_16, + }); + + cli_fd = socket(AF_UNIX, SOCK_STREAM, 0); + ASSERT_LE(0, cli_fd); + EXPECT_EQ(EACCES, + test_connect_named_unix(_metadata, cli_fd, path)); + + EXPECT_EQ(0, close(cli_fd)); + _exit(_metadata->exit_code); + } + + ASSERT_EQ(child_pid, waitpid(child_pid, &status, 0)); + EXPECT_EQ(1, WIFEXITED(status)); + EXPECT_EQ(EXIT_SUCCESS, WEXITSTATUS(status)); + + EXPECT_EQ(0, matches_log_fs_extra(_metadata, self->audit_fd, + "fs\\.resolve_unix", path, NULL)); + + EXPECT_EQ(0, audit_count_records(self->audit_fd, &records)); + EXPECT_EQ(0, records.access); + EXPECT_EQ(1, records.domain); + + EXPECT_EQ(0, close(srv_fd)); +} + TEST_F(audit_layout1, mount) { struct audit_records records; -- 2.53.0