From: "Mickaël Salaün" <mic@digikod.net>
To: Konstantin Meskhidze <konstantin.meskhidze@huawei.com>
Cc: willemdebruijn.kernel@gmail.com, gnoack3000@gmail.com,
linux-security-module@vger.kernel.org, netdev@vger.kernel.org,
netfilter-devel@vger.kernel.org, yusongping@huawei.com,
hukeping@huawei.com, anton.sirazetdinov@huawei.com
Subject: Re: [PATCH v7 14/18] seltests/landlock: add rules overlapping test
Date: Tue, 6 Sep 2022 10:09:41 +0200 [thread overview]
Message-ID: <25b7e8c8-1eba-1a8d-138b-988dabeeb2ae@digikod.net> (raw)
In-Reply-To: <20220829170401.834298-15-konstantin.meskhidze@huawei.com>
On 29/08/2022 19:03, 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 v6:
> * None.
>
> Changes since v5:
> * Formats code with clang-format-14.
>
> Changes since v4:
> * Refactors code with self->port, self->addr4 variables.
>
> Changes since v3:
> * Adds ruleset_overlap test.
>
> ---
> tools/testing/selftests/landlock/net_test.c | 89 +++++++++++++++++++++
> 1 file changed, 89 insertions(+)
>
> diff --git a/tools/testing/selftests/landlock/net_test.c b/tools/testing/selftests/landlock/net_test.c
> index 40aef7c683af..b3b38745f4eb 100644
> --- a/tools/testing/selftests/landlock/net_test.c
> +++ b/tools/testing/selftests/landlock/net_test.c
> @@ -464,4 +464,93 @@ TEST_F(socket, connect_afunspec_with_restictions)
> ASSERT_EQ(1, WIFEXITED(status));
> ASSERT_EQ(EXIT_SUCCESS, WEXITSTATUS(status));
> }
> +
> +TEST_F(socket, ruleset_overlap)
> +{
> + int sockfd;
> + int one = 1;
> +
> + 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],
> + };
> +
> + 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. */
> + 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_variant(variant, SOCK_STREAM);
> + ASSERT_LE(0, sockfd);
> + /* Allows to reuse of local address. */
> + ASSERT_EQ(0, setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &one,
> + sizeof(one)));
> +
> + /* Binds the socket to address with port[0]. */
> + ASSERT_EQ(0, bind_variant(variant, sockfd, self, 0));
> +
> + /* Makes connection to socket with port[0]. */
> + ASSERT_EQ(0, connect_variant(variant, sockfd, self, 0));
> +
> + /* Closes socket. */
> + ASSERT_EQ(0, close(sockfd));
> +
> + /* Creates another ruleset layer. */
> + ruleset_fd =
> + landlock_create_ruleset(&ruleset_attr, sizeof(ruleset_attr), 0);
> + ASSERT_LE(0, ruleset_fd);
> +
> + /*
> + * Allows bind operations to the port[0] socket in
> + * the new ruleset layer.
> + */
> + ASSERT_EQ(0, landlock_add_rule(ruleset_fd, LANDLOCK_RULE_NET_SERVICE,
> + &net_service_1, 0));
> +
> + /* Enforces the new ruleset. */
> + enforce_ruleset(_metadata, ruleset_fd);
> +
> + /* Creates a server socket. */
> + sockfd = create_socket_variant(variant, SOCK_STREAM);
> + ASSERT_LE(0, sockfd);
> + /* Allows to reuse of local address. */
> + ASSERT_EQ(0, setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &one,
> + sizeof(one)));
> +
> + /* Binds the socket to address with port[0]. */
> + ASSERT_EQ(0, bind_variant(variant, sockfd, self, 0));
> +
> + /*
> + * Forbids to connect the socket to address with port[0],
> + * cause just one ruleset layer has connect() access rule.
s/cause/because/ (everywhere)
next prev parent reply other threads:[~2022-09-06 8:10 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-29 17:03 [PATCH v7 00/18] Network support for Landlock Konstantin Meskhidze
2022-08-29 17:03 ` [PATCH v7 01/18] landlock: rename access mask Konstantin Meskhidze
2022-09-06 8:06 ` Mickaël Salaün
2022-09-09 10:42 ` Konstantin Meskhidze (A)
2022-09-12 17:16 ` Mickaël Salaün
2022-08-29 17:03 ` [PATCH v7 02/18] landlock: refactor landlock_find_rule/insert_rule Konstantin Meskhidze
2022-09-06 8:07 ` Mickaël Salaün
2022-09-09 10:48 ` Konstantin Meskhidze (A)
2022-09-12 17:17 ` Mickaël Salaün
2022-10-12 8:37 ` Konstantin Meskhidze (A)
2022-10-12 10:06 ` Mickaël Salaün
2022-10-12 11:13 ` Konstantin Meskhidze (A)
2022-08-29 17:03 ` [PATCH v7 03/18] landlock: refactor merge/inherit_ruleset functions Konstantin Meskhidze
2022-09-06 8:07 ` Mickaël Salaün
2022-09-09 14:53 ` Konstantin Meskhidze (A)
2022-09-12 17:17 ` Mickaël Salaün
2022-08-29 17:03 ` [PATCH v7 04/18] landlock: move helper functions Konstantin Meskhidze
2022-09-06 8:07 ` Mickaël Salaün
2022-09-10 16:50 ` Konstantin Meskhidze (A)
2022-08-29 17:03 ` [PATCH v7 05/18] landlock: refactor " Konstantin Meskhidze
2022-09-06 8:07 ` Mickaël Salaün
2022-09-10 17:20 ` Konstantin Meskhidze (A)
2022-09-12 17:18 ` Mickaël Salaün
2022-08-29 17:03 ` [PATCH v7 06/18] landlock: refactor landlock_add_rule syscall Konstantin Meskhidze
2022-08-29 17:03 ` [PATCH v7 07/18] landlock: user space API network support Konstantin Meskhidze
2022-09-06 8:08 ` Mickaël Salaün
2022-09-10 17:25 ` Konstantin Meskhidze (A)
2022-08-29 17:03 ` [PATCH v7 08/18] landlock: add network rules support Konstantin Meskhidze
2022-09-06 8:08 ` Mickaël Salaün
2022-09-10 18:27 ` Konstantin Meskhidze (A)
2022-09-12 17:18 ` Mickaël Salaün
2022-08-29 17:03 ` [PATCH v7 09/18] landlock: implement TCP network hooks Konstantin Meskhidze
2022-09-06 8:08 ` Mickaël Salaün
2022-09-10 20:28 ` Konstantin Meskhidze (A)
2022-09-12 17:18 ` Mickaël Salaün
2022-08-29 17:03 ` [PATCH v7 10/18] seltests/landlock: move helper function Konstantin Meskhidze
2022-09-06 8:09 ` Mickaël Salaün
2022-09-10 20:29 ` Konstantin Meskhidze (A)
2022-08-29 17:03 ` [PATCH v7 11/18] seltests/landlock: add tests for bind() hooks Konstantin Meskhidze
2022-09-06 8:09 ` Mickaël Salaün
2022-09-10 20:47 ` Konstantin Meskhidze (A)
2022-08-29 17:03 ` [PATCH v7 12/18] seltests/landlock: add tests for connect() hooks Konstantin Meskhidze
2022-08-29 17:03 ` [PATCH v7 13/18] seltests/landlock: add AF_UNSPEC family test Konstantin Meskhidze
2022-09-06 8:09 ` Mickaël Salaün
2022-09-10 20:48 ` Konstantin Meskhidze (A)
2022-08-29 17:03 ` [PATCH v7 14/18] seltests/landlock: add rules overlapping test Konstantin Meskhidze
2022-09-06 8:09 ` Mickaël Salaün [this message]
2022-09-10 20:49 ` Konstantin Meskhidze (A)
2022-08-29 17:03 ` [PATCH v7 15/18] seltests/landlock: add ruleset expanding test Konstantin Meskhidze
2022-08-29 17:03 ` [PATCH v7 16/18] seltests/landlock: add invalid input data test Konstantin Meskhidze
2022-09-06 8:09 ` Mickaël Salaün
2022-09-10 20:51 ` Konstantin Meskhidze (A)
2022-09-12 17:22 ` Mickaël Salaün
2022-10-10 10:37 ` Mickaël Salaün
2022-10-11 7:55 ` Konstantin Meskhidze (A)
2022-10-11 8:32 ` Mickaël Salaün
2022-08-29 17:04 ` [PATCH v7 17/18] samples/landlock: add network demo Konstantin Meskhidze
2022-09-06 8:10 ` Mickaël Salaün
2022-09-10 20:59 ` Konstantin Meskhidze (A)
2022-09-12 17:23 ` Mickaël Salaün
2022-08-29 17:04 ` [PATCH v7 18/18] landlock: Document Landlock's network support Konstantin Meskhidze
2022-09-06 8:12 ` Mickaël Salaün
2022-09-10 21:14 ` Konstantin Meskhidze (A)
2022-09-12 17:23 ` Mickaël Salaün
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