From: Konstantin Meskhidze <konstantin.meskhidze@huawei.com>
To: "Mickaël Salaün" <mic@digikod.net>
Cc: <willemdebruijn.kernel@gmail.com>,
<linux-security-module@vger.kernel.org>, <netdev@vger.kernel.org>,
<netfilter-devel@vger.kernel.org>, <yusongping@huawei.com>,
<anton.sirazetdinov@huawei.com>
Subject: Re: [PATCH v5 12/15] seltests/landlock: rules overlapping test
Date: Thu, 19 May 2022 15:24:54 +0300 [thread overview]
Message-ID: <09ab37e1-eba5-80be-8fb3-df2bde698fc6@huawei.com> (raw)
In-Reply-To: <4806f5ed-41c0-f9f2-d7a1-2173c8494399@digikod.net>
5/16/2022 8:41 PM, Mickaël Salaün пишет:
> Please fix these kind of subjects (selftests). I'd also like the subject
> description to (quickly) describe what is done (with a verb), to start
> with a capital (like a title), and to contain "network", something like
> this:
> selftests/landlock: Add test for overlapping network rules
>
> This is a good test though.
>
>
> On 16/05/2022 17:20, Konstantin Meskhidze wrote:
>> This patch adds overlapping rules for one port.
>> First rule adds just bind() access right for a port.
>> The second one adds both bind() and connect()
>> access rights for the same port.
>>
>> Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@huawei.com>
>> ---
>>
>> Changes since v3:
>> * Add ruleset_overlap test.
>>
>> Changes since v4:
>> * Refactoring code with self->port, self->addr4 variables.
>>
>> ---
>> tools/testing/selftests/landlock/net_test.c | 51 +++++++++++++++++++++
>> 1 file changed, 51 insertions(+)
>>
>> diff --git a/tools/testing/selftests/landlock/net_test.c
>> b/tools/testing/selftests/landlock/net_test.c
>> index bf8e49466d1d..1d8c9dfdbd48 100644
>> --- a/tools/testing/selftests/landlock/net_test.c
>> +++ b/tools/testing/selftests/landlock/net_test.c
>> @@ -677,4 +677,55 @@ TEST_F_FORK(socket_test,
>> connect_afunspec_with_restictions) {
>> ASSERT_EQ(1, WIFEXITED(status));
>> ASSERT_EQ(EXIT_SUCCESS, WEXITSTATUS(status));
>> }
>> +
>> +TEST_F_FORK(socket_test, ruleset_overlap) {
>
> Please run clang-format-14 on all files (and all commits).
>
Yep. I already have updated clang-format executable on my Ubuntu and
setup Vscode to use .clang-format file.
>> +
>> + int sockfd;
>> +
>> + struct landlock_ruleset_attr ruleset_attr = {
>> + .handled_access_net = LANDLOCK_ACCESS_NET_BIND_TCP |
>> + LANDLOCK_ACCESS_NET_CONNECT_TCP,
>> + };
>> + struct landlock_net_service_attr net_service_1 = {
>> + .allowed_access = LANDLOCK_ACCESS_NET_BIND_TCP,
>> +
>> + .port = self->port[0],
>> + };
>> +
>> + struct landlock_net_service_attr net_service_2 = {
>> + .allowed_access = LANDLOCK_ACCESS_NET_BIND_TCP |
>> + LANDLOCK_ACCESS_NET_CONNECT_TCP,
>> +
>> + .port = self->port[0],
>> + };
>> +
>> + const int ruleset_fd = landlock_create_ruleset(&ruleset_attr,
>> + sizeof(ruleset_attr), 0);
>> + ASSERT_LE(0, ruleset_fd);
>> +
>> + /* Allows bind operations to the port[0] socket */
>
> Please ends this kind of comments with a final dot (all files/commits).
>
Ok. I will.
>> + ASSERT_EQ(0, landlock_add_rule(ruleset_fd,
>> LANDLOCK_RULE_NET_SERVICE,
>> + &net_service_1, 0));
>> + /* Allows connect and bind operations to the port[0] socket */
>> + ASSERT_EQ(0, landlock_add_rule(ruleset_fd,
>> LANDLOCK_RULE_NET_SERVICE,
>> + &net_service_2, 0));
>> +
>> + /* Enforces the ruleset. */
>> + enforce_ruleset(_metadata, ruleset_fd);
>> +
>> + /* Creates a server socket */
>> + sockfd = create_socket(_metadata, false, false);
>> + ASSERT_LE(0, sockfd);
>> +
>> + /* Binds the socket to address with port[0] */
>> + ASSERT_EQ(0, bind(sockfd, (struct sockaddr *)&self->addr4[0],
>> sizeof(self->addr4[0])));
>> +
>> + /* Makes connection to socket with port[0] */
>> + ASSERT_EQ(0, connect(sockfd, (struct sockaddr *)&self->addr4[0],
>
> Can you please get rid of this (struct sockaddr *) type casting please
> (without compiler warning)?
>
Do you have a warning here? Cause I don't.
>> + sizeof(self->addr4[0])));
>
> Here, you can enforce a new ruleset with net_service_1 and check that
> bind() is still allowed but not connect().
>
Ok. Thank you for advice.
>> +
>> + /* Closes socket */
>> + ASSERT_EQ(0, close(sockfd));
>> +}
>> +
>> TEST_HARNESS_MAIN
>> --
>> 2.25.1
>>
> .
next prev parent reply other threads:[~2022-05-19 12:25 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-16 15:20 [PATCH v5 00/15] Network support for Landlock Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 01/15] landlock: access mask renaming Konstantin Meskhidze
2022-05-17 8:12 ` Mickaël Salaün
2022-05-18 9:16 ` Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 02/15] landlock: landlock_find/insert_rule refactoring Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 03/15] landlock: merge and inherit function refactoring Konstantin Meskhidze
2022-05-17 8:14 ` Mickaël Salaün
2022-05-18 9:18 ` Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 04/15] landlock: helper functions refactoring Konstantin Meskhidze
2022-05-16 17:14 ` Mickaël Salaün
2022-05-16 17:43 ` Konstantin Meskhidze
2022-05-16 18:28 ` Mickaël Salaün
2022-05-18 9:14 ` Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 05/15] landlock: landlock_add_rule syscall refactoring Konstantin Meskhidze
2022-05-17 8:04 ` Mickaël Salaün
2022-05-17 8:10 ` Mickaël Salaün
2022-05-19 9:24 ` Konstantin Meskhidze
2022-05-19 9:23 ` Konstantin Meskhidze
2022-05-19 14:37 ` Mickaël Salaün
2022-05-24 8:35 ` Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 06/15] landlock: user space API network support Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 07/15] landlock: add support network rules Konstantin Meskhidze
2022-05-17 8:27 ` Mickaël Salaün
2022-05-19 9:27 ` Konstantin Meskhidze
2022-05-19 14:42 ` Mickaël Salaün
2022-05-24 8:36 ` Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 08/15] landlock: TCP network hooks implementation Konstantin Meskhidze
2022-05-17 8:51 ` Mickaël Salaün
2022-05-19 11:40 ` Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 09/15] seltests/landlock: add tests for bind() hooks Konstantin Meskhidze
2022-05-16 21:11 ` Mickaël Salaün
2022-05-19 12:10 ` Konstantin Meskhidze
2022-05-19 14:29 ` Mickaël Salaün
2022-05-24 8:34 ` Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 10/15] seltests/landlock: add tests for connect() hooks Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 11/15] seltests/landlock: connect() with AF_UNSPEC tests Konstantin Meskhidze
2022-05-17 8:55 ` Mickaël Salaün
2022-05-19 12:31 ` Konstantin Meskhidze
2022-05-19 15:00 ` Mickaël Salaün
2022-05-24 8:40 ` Konstantin Meskhidze
2022-05-19 15:02 ` Mickaël Salaün
2022-05-24 8:42 ` Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 12/15] seltests/landlock: rules overlapping test Konstantin Meskhidze
2022-05-16 17:41 ` Mickaël Salaün
2022-05-19 12:24 ` Konstantin Meskhidze [this message]
2022-05-19 15:04 ` Mickaël Salaün
2022-05-24 8:55 ` Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 13/15] seltests/landlock: ruleset expanding test Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 14/15] seltests/landlock: invalid user input data test Konstantin Meskhidze
2022-05-16 15:20 ` [PATCH v5 15/15] samples/landlock: adds network demo Konstantin Meskhidze
2022-05-17 9:19 ` Mickaël Salaün
2022-05-19 13:33 ` Konstantin Meskhidze
2022-05-19 15:09 ` Mickaël Salaün
2022-05-24 8:41 ` Konstantin Meskhidze
2022-05-20 10:48 ` [PATCH v5 00/15] Network support for Landlock - UDP discussion Mickaël Salaün
2022-05-25 9:41 ` Konstantin Meskhidze
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