[PATCH v11 00/12] Network support for Landlock

[Mickaël Salaün]

On 06/06/2023 11:10, Konstantin Meskhidze (A) wrote:
> 
> 
> 6/5/2023 6:02 PM, Mickaël Salaün пишет:
>> Hi Konstantin,
>>
>> The kernel code looks good. I found some issues in tests and
>> documentation, and I'm still reviewing the whole patches. In the
>> meantime, I've pushed it in -next, we'll see how it goes.
>>
>> We need to have this new code covered by syzkaller. I'll work on that
>> unless you want to.
>>
>> Regards,
>>     Mickaël
>>
>     Hi, Mickaël!
>     I have never set up syzkaller. Do you have a syzkaller scenario for
> Landlock code? I need some hints. I will give it a shot.

You can get a look at https://github.com/google/syzkaller/pull/3423 or 
other Landlock-related PR.

The setup might be a bit challenging though, but it will be a good 
investment for future kernel changes.


> 
>    Regards,
>       Konstantin.
>>
>> On 15/05/2023 18:13, Konstantin Meskhidze wrote:
>>> Hi,
>>> This is a new V11 patch related to Landlock LSM network confinement.
>>> It is based on the landlock's -next branch on top of v6.2-rc3+ kernel version:
>>> https://git.kernel.org/pub/scm/linux/kernel/git/mic/linux.git/log/?h=next
>>>
>>> It brings refactoring of previous patch version V10.
>>> Mostly there are fixes of logic and typos, refactoring some selftests.
>>>
>>> All test were run in QEMU evironment and compiled with
>>>    -static flag.
>>>    1. network_test: 36/36 tests passed.
>>>    2. base_test: 7/7 tests passed.
>>>    3. fs_test: 78/78 tests passed.
>>>    4. ptrace_test: 8/8 tests passed.
>>>
>>> Previous versions:
>>> v10: https://lore.kernel.org/linux-security-module/20230323085226.1432550-1-konstantin.meskhidze@huawei.com/
>>> v9: https://lore.kernel.org/linux-security-module/20230116085818.165539-1-konstantin.meskhidze@huawei.com/
>>> v8: https://lore.kernel.org/linux-security-module/20221021152644.155136-1-konstantin.meskhidze@huawei.com/
>>> v7: https://lore.kernel.org/linux-security-module/20220829170401.834298-1-konstantin.meskhidze@huawei.com/
>>> v6: https://lore.kernel.org/linux-security-module/20220621082313.3330667-1-konstantin.meskhidze@huawei.com/
>>> v5: https://lore.kernel.org/linux-security-module/20220516152038.39594-1-konstantin.meskhidze@huawei.com
>>> v4: https://lore.kernel.org/linux-security-module/20220309134459.6448-1-konstantin.meskhidze@huawei.com/
>>> v3: https://lore.kernel.org/linux-security-module/20220124080215.265538-1-konstantin.meskhidze@huawei.com/
>>> v2: https://lore.kernel.org/linux-security-module/20211228115212.703084-1-konstantin.meskhidze@huawei.com/
>>> v1: https://lore.kernel.org/linux-security-module/20211210072123.386713-1-konstantin.meskhidze@huawei.com/
>>>
>>> Konstantin Meskhidze (11):
>>>     landlock: Make ruleset's access masks more generic
>>>     landlock: Refactor landlock_find_rule/insert_rule
>>>     landlock: Refactor merge/inherit_ruleset functions
>>>     landlock: Move and rename layer helpers
>>>     landlock: Refactor layer helpers
>>>     landlock: Refactor landlock_add_rule() syscall
>>>     landlock: Add network rules and TCP hooks support
>>>     selftests/landlock: Share enforce_ruleset()
>>>     selftests/landlock: Add 11 new test suites dedicated to network
>>>     samples/landlock: Add network demo
>>>     landlock: Document Landlock's network support
>>>
>>> Mickaël Salaün (1):
>>>     landlock: Allow filesystem layout changes for domains without such
>>>       rule type
>>>
>>>    Documentation/userspace-api/landlock.rst     |   89 +-
>>>    include/uapi/linux/landlock.h                |   48 +
>>>    samples/landlock/sandboxer.c                 |  128 +-
>>>    security/landlock/Kconfig                    |    1 +
>>>    security/landlock/Makefile                   |    2 +
>>>    security/landlock/fs.c                       |  232 +--
>>>    security/landlock/limits.h                   |    7 +-
>>>    security/landlock/net.c                      |  174 +++
>>>    security/landlock/net.h                      |   26 +
>>>    security/landlock/ruleset.c                  |  405 +++++-
>>>    security/landlock/ruleset.h                  |  185 ++-
>>>    security/landlock/setup.c                    |    2 +
>>>    security/landlock/syscalls.c                 |  163 ++-
>>>    tools/testing/selftests/landlock/base_test.c |    2 +-
>>>    tools/testing/selftests/landlock/common.h    |   10 +
>>>    tools/testing/selftests/landlock/config      |    4 +
>>>    tools/testing/selftests/landlock/fs_test.c   |   74 +-
>>>    tools/testing/selftests/landlock/net_test.c  | 1317 ++++++++++++++++++
>>>    18 files changed, 2520 insertions(+), 349 deletions(-)
>>>    create mode 100644 security/landlock/net.c
>>>    create mode 100644 security/landlock/net.h
>>>    create mode 100644 tools/testing/selftests/landlock/net_test.c
>>>
>>> --
>>> 2.25.1
>>>
>> .