[PATCH v6 00/17] Network support for Landlock

[Konstantin Meskhidze]

Hi,
This is a new V6 patch related to Landlock LSM network confinement.
It is based on the latest landlock-wip branch on top of v5.19-rc2:
https://git.kernel.org/pub/scm/linux/kernel/git/mic/linux.git/log/?h=landlock-wip

It brings refactoring of previous patch version V5:
    - Fixes some logic errors and typos.
    - Adds additional FIXTURE_VARIANT and FIXTURE_VARIANT_ADD helpers
    to support both ip4 and ip6 families and shorten seltests' code.
    - Makes TCP sockets confinement support optional in sandboxer demo.
    - Formats the code with clang-format-14

All test were run in QEMU evironment and compiled with
 -static flag.
 1. network_test: 18/18 tests passed.
 2. base_test: 7/7 tests passed.
 3. fs_test: 59/59 tests passed.
 4. ptrace_test: 8/8 tests passed.

Still have issue with base_test were compiled without -static flag
(landlock-wip branch without network support)
1. base_test: 6/7 tests passed.
 Error:
 #  RUN           global.inconsistent_attr ...
 # base_test.c:54:inconsistent_attr:Expected ENOMSG (42) == errno (22)
 # inconsistent_attr: Test terminated by assertion
 #          FAIL  global.inconsistent_attr
not ok 1 global.inconsistent_attr

LCOV - code coverage report:
            Hit  Total  Coverage
Lines:      952  1010    94.3 %
Functions:  79   82      96.3 %

Previous versions:
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 (17):
  landlock: renames access mask
  landlock: refactors landlock_find/insert_rule
  landlock: refactors merge and inherit functions
  landlock: moves helper functions
  landlock: refactors helper functions
  landlock: refactors landlock_add_rule syscall
  landlock: user space API network support
  landlock: adds support network rules
  landlock: implements TCP network hooks
  seltests/landlock: moves helper function
  seltests/landlock: adds tests for bind() hooks
  seltests/landlock: adds tests for connect() hooks
  seltests/landlock: adds AF_UNSPEC family test
  seltests/landlock: adds rules overlapping test
  seltests/landlock: adds ruleset expanding test
  seltests/landlock: adds invalid input data test
  samples/landlock: adds network demo

 include/uapi/linux/landlock.h               |  49 ++
 samples/landlock/sandboxer.c                | 118 ++-
 security/landlock/Kconfig                   |   1 +
 security/landlock/Makefile                  |   2 +
 security/landlock/fs.c                      | 162 +---
 security/landlock/limits.h                  |   8 +-
 security/landlock/net.c                     | 155 ++++
 security/landlock/net.h                     |  26 +
 security/landlock/ruleset.c                 | 448 +++++++++--
 security/landlock/ruleset.h                 |  91 ++-
 security/landlock/setup.c                   |   2 +
 security/landlock/syscalls.c                | 168 +++--
 tools/testing/selftests/landlock/common.h   |  10 +
 tools/testing/selftests/landlock/config     |   4 +
 tools/testing/selftests/landlock/fs_test.c  |  10 -
 tools/testing/selftests/landlock/net_test.c | 774 ++++++++++++++++++++
 16 files changed, 1737 insertions(+), 291 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