Add test that validates behaviour of Landlock when rule with wildcard value is added. Signed-off-by: Mikhail Ivanov --- .../testing/selftests/landlock/socket_test.c | 39 +++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/tools/testing/selftests/landlock/socket_test.c b/tools/testing/selftests/landlock/socket_test.c index fcc0f92075a7..abcef11aaf39 100644 --- a/tools/testing/selftests/landlock/socket_test.c +++ b/tools/testing/selftests/landlock/socket_test.c @@ -151,4 +151,43 @@ TEST_F(mini, rule_with_empty_access) ASSERT_EQ(0, close(ruleset_fd)); } +/* Validates landlock behaviour when using wildcard (-1) values in socket rules. */ +TEST_F(mini, rule_with_wildcard) +{ + const struct landlock_ruleset_attr ruleset_attr = { + .handled_access_socket = LANDLOCK_ACCESS_SOCKET_CREATE, + }; + const struct landlock_socket_attr create_family_attr = { + .allowed_access = LANDLOCK_ACCESS_SOCKET_CREATE, + .family = AF_INET, + .type = -1, + .protocol = -1, + }; + const struct landlock_socket_attr create_family_type_attr = { + .allowed_access = LANDLOCK_ACCESS_SOCKET_CREATE, + .family = AF_INET, + .type = SOCK_STREAM, + .protocol = -1, + }; + const struct landlock_socket_attr create_family_protocol_attr = { + .allowed_access = LANDLOCK_ACCESS_SOCKET_CREATE, + .family = AF_INET, + .type = -1, + .protocol = 0, + }; + int ruleset_fd; + + ruleset_fd = + landlock_create_ruleset(&ruleset_attr, sizeof(ruleset_attr), 0); + ASSERT_LE(0, ruleset_fd); + + EXPECT_EQ(0, landlock_add_rule(ruleset_fd, LANDLOCK_RULE_SOCKET, + &create_family_attr, 0)); + EXPECT_EQ(0, landlock_add_rule(ruleset_fd, LANDLOCK_RULE_SOCKET, + &create_family_type_attr, 0)); + EXPECT_EQ(0, landlock_add_rule(ruleset_fd, LANDLOCK_RULE_SOCKET, + &create_family_protocol_attr, 0)); + ASSERT_EQ(0, close(ruleset_fd)); +} + TEST_HARNESS_MAIN -- 2.34.1