Re: [PATCH v11 00/12] Network support for Landlock

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On 19/06/2023 16:28, Konstantin Meskhidze (A) wrote:


6/6/2023 12:40 PM, Mickaël Salaün пишет:

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.

    Thanks. I will handle it. Can you give me a hand with some tips if I
have issues with syzkaller setup?

Yes, you can Cc me and send emails to syzkaller@xxxxxxxxxxxxxxxx: https://groups.google.com/g/syzkaller







    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@xxxxxxxxxx/
v9: https://lore.kernel.org/linux-security-module/20230116085818.165539-1-konstantin.meskhidze@xxxxxxxxxx/
v8: https://lore.kernel.org/linux-security-module/20221021152644.155136-1-konstantin.meskhidze@xxxxxxxxxx/
v7: https://lore.kernel.org/linux-security-module/20220829170401.834298-1-konstantin.meskhidze@xxxxxxxxxx/
v6: https://lore.kernel.org/linux-security-module/20220621082313.3330667-1-konstantin.meskhidze@xxxxxxxxxx/
v5: https://lore.kernel.org/linux-security-module/20220516152038.39594-1-konstantin.meskhidze@xxxxxxxxxx
v4: https://lore.kernel.org/linux-security-module/20220309134459.6448-1-konstantin.meskhidze@xxxxxxxxxx/
v3: https://lore.kernel.org/linux-security-module/20220124080215.265538-1-konstantin.meskhidze@xxxxxxxxxx/
v2: https://lore.kernel.org/linux-security-module/20211228115212.703084-1-konstantin.meskhidze@xxxxxxxxxx/
v1: https://lore.kernel.org/linux-security-module/20211210072123.386713-1-konstantin.meskhidze@xxxxxxxxxx/

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

.
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