Re: [PATCH v7 16/18] seltests/landlock: add invalid input data test

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On 12/09/2022 19:22, Mickaël Salaün wrote:

On 10/09/2022 22:51, Konstantin Meskhidze (A) wrote:


9/6/2022 11:09 AM, Mickaël Salaün пишет:

On 29/08/2022 19:03, Konstantin Meskhidze wrote:
This patch adds rules with invalid user space supplied data:
       - out of range ruleset attribute;
       - unhandled allowed access;
       - zero port value;
       - zero access value;

Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@xxxxxxxxxx>
---

Changes since v6:
* Adds invalid ruleset attribute test.

Changes since v5:
* Formats code with clang-format-14.

Changes since v4:
* Refactors code with self->port variable.

Changes since v3:
* Adds inval test.

---
    tools/testing/selftests/landlock/net_test.c | 66 ++++++++++++++++++++-
    1 file changed, 65 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/landlock/net_test.c b/tools/testing/selftests/landlock/net_test.c
index a93224d1521b..067ba45f58a5 100644
--- a/tools/testing/selftests/landlock/net_test.c
+++ b/tools/testing/selftests/landlock/net_test.c
@@ -26,9 +26,12 @@

    #define IP_ADDRESS "127.0.0.1"

-/* Number pending connections queue to be hold */
+/* Number pending connections queue to be hold. */

Patch of a previous patch?


    #define BACKLOG 10

+/* Invalid attribute, out of landlock network access range. */
+#define LANDLOCK_INVAL_ATTR 7
+
    FIXTURE(socket)
    {
    	uint port[MAX_SOCKET_NUM];
@@ -719,4 +722,65 @@ TEST_F(socket, ruleset_expanding)
    	/* Closes socket 1. */
    	ASSERT_EQ(0, close(sockfd_1));
    }
+
+TEST_F(socket, inval)
+{
+	struct landlock_ruleset_attr ruleset_attr = {
+		.handled_access_net = LANDLOCK_ACCESS_NET_BIND_TCP
+	};
+	struct landlock_ruleset_attr ruleset_attr_inval = {
+		.handled_access_net = LANDLOCK_INVAL_ATTR

Please add a test similar to TEST_F_FORK(layout1,
file_and_dir_access_rights) instead of explicitly defining and only
testing LANDLOCK_INVAL_ATTR.

     Do you want fs test to be in this commit or maybe its better to add
it into "[PATCH v7 01/18] landlock: rename access mask" one.

Just to make it clear, I didn't suggested an FS test, but a new network test similar to layout1.file_and_dir_access_rights but only related to the network. It should replace/extend the content of this patch (16/18).



You can squash all the new tests patches (except the "move helper
function").
You should move most of your patch descriptions in a comment above the related tests. The commit message should list all the new tests and quickly explain which part of the kernel is covered (i.e. mostly the TCP part of Landlock). You can get some inspiration from https://git.kernel.org/mic/c/f4056b9266b571c63f30cda70c2d89f7b7e8bb7b

You need to rebase on top of my next branch (from today).



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