[RFC PATCH v3 05/19] selftests/landlock: Test adding a rule for each unknown access

[Günther Noack]

On Wed, Sep 04, 2024 at 06:48:10PM +0800, Mikhail Ivanov wrote:
> Add test that validates behaviour of Landlock after rule with
> unknown access is added.
> 
> Signed-off-by: Mikhail Ivanov <ivanov.mikhail1 at huawei-partners.com>
> ---
> Changes since v2:
> * Replaces EXPECT_EQ with ASSERT_EQ for close().
> * Refactors commit title.
> 
> Changes since v1:
> * Refactors commit messsage.
> ---
>  .../testing/selftests/landlock/socket_test.c  | 26 +++++++++++++++++++
>  1 file changed, 26 insertions(+)
> 
> diff --git a/tools/testing/selftests/landlock/socket_test.c b/tools/testing/selftests/landlock/socket_test.c
> index cb23efd3ccc9..811bdaa95a7a 100644
> --- a/tools/testing/selftests/landlock/socket_test.c
> +++ b/tools/testing/selftests/landlock/socket_test.c
> @@ -325,4 +325,30 @@ TEST_F(protocol, socket_access_rights)
>  	ASSERT_EQ(0, close(ruleset_fd));
>  }
>  
> +TEST_F(protocol, rule_with_unknown_access)
> +{
> +	const struct landlock_ruleset_attr ruleset_attr = {
> +		.handled_access_socket = ACCESS_ALL,
> +	};
> +	struct landlock_socket_attr protocol = {
> +		.family = self->prot.family,
> +		.type = self->prot.type,
> +	};
> +	int ruleset_fd;
> +	__u64 access;
> +
> +	ruleset_fd =
> +		landlock_create_ruleset(&ruleset_attr, sizeof(ruleset_attr), 0);
> +	ASSERT_LE(0, ruleset_fd);
> +
> +	for (access = 1ULL << 63; access != ACCESS_LAST; access >>= 1) {
> +		protocol.allowed_access = access;
> +		EXPECT_EQ(-1,
> +			  landlock_add_rule(ruleset_fd, LANDLOCK_RULE_SOCKET,
> +					    &protocol, 0));
> +		EXPECT_EQ(EINVAL, errno);
> +	}
> +	ASSERT_EQ(0, close(ruleset_fd));
> +}
> +
>  TEST_HARNESS_MAIN
> -- 
> 2.34.1
> 

Reviewed-by: Günther Noack <gnoack at google.com>