[GIT PULL] Landlock fix for v6.12-rc7 #2

[Mickaël Salaün]

Hi Linus,

This PR fixes issues in the Landlock's sandboxer sample and documentation,
slightly refactors helpers (required for ongoing patch series), and improve/fix
a feature merged in v6.12 (signal and abstract UNIX socket scoping).

Please pull these changes for v6.12-rc7 (or rc8, if any).  These commits merge
cleanly with your master branch.  The kernel code has been tested in the latest
linux-next releases for a few weeks, but I updated the last three patches with
cosmetic changes according to reviews.

Test coverage for security/landlock is 92.5% of 1129 lines according to
gcc/gcov-14, and it was 92.8% of 1134 lines before this PR.

Regards,
 Mickaël

--
The following changes since commit 8e929cb546ee42c9a61d24fae60605e9e3192354:

  Linux 6.12-rc3 (2024-10-13 14:33:32 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/mic/linux.git tags/landlock-6.12-rc7

for you to fetch changes up to 03197e40a22c2641a1f9d1744418cd29f4954b83:

  landlock: Optimize scope enforcement (2024-11-09 19:52:13 +0100)

----------------------------------------------------------------
Landlock fix for v6.12-rc7

----------------------------------------------------------------
Daniel Burgener (1):
      landlock: Fix grammar issues in documentation

Matthieu Buffet (3):
      samples/landlock: Fix port parsing in sandboxer
      samples/landlock: Refactor help message
      samples/landlock: Clarify option parsing behaviour

Mickaël Salaün (4):
      landlock: Improve documentation of previous limitations
      landlock: Refactor filesystem access mask management
      landlock: Refactor network access mask management
      landlock: Optimize scope enforcement

 Documentation/security/landlock.rst      |  14 ++--
 Documentation/userspace-api/landlock.rst |  90 ++++++++++++-------------
 samples/landlock/sandboxer.c             | 112 +++++++++++++++++++------------
 security/landlock/fs.c                   |  31 +++------
 security/landlock/net.c                  |  28 ++------
 security/landlock/ruleset.h              |  74 +++++++++++++++++---
 security/landlock/syscalls.c             |   2 +-
 security/landlock/task.c                 |  18 ++++-
 8 files changed, 217 insertions(+), 152 deletions(-)