[v1,0/9] Landlock fixes

Message

Mickaël Salaün Nov. 11, 2020, 9:34 p.m. UTC

Hi,

This patch series fixes some issues and makes the Landlock filesystem
access-control more consistent and deterministic when stacking multiple
rulesets.  This is checked by current and new tests.  I also extended
documentation and example to help users.

This series can be applied on top of
https://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git/log/?h=landlock_lsm

Regards,

Mickaël Salaün (9):
  landlock: Fix memory allocation error handling
  landlock: Cosmetic fixes for filesystem management
  landlock: Enforce deterministic interleaved path rules
  landlock: Always intersect access rights
  landlock: Add extra checks when inserting a rule
  selftests/landlock: Extend layout1.inherit_superset
  landlock: Clean up get_ruleset_from_fd()
  landlock: Add help to enable Landlock as a stacked LSM
  landlock: Extend documentation about limitations

 Documentation/userspace-api/landlock.rst   |  17 +++
 samples/landlock/sandboxer.c               |  21 +++-
 security/landlock/Kconfig                  |   4 +-
 security/landlock/fs.c                     |  67 +++++-----
 security/landlock/object.c                 |   5 +-
 security/landlock/ruleset.c                |  34 ++---
 security/landlock/syscall.c                |  24 ++--
 tools/testing/selftests/landlock/fs_test.c | 140 +++++++++++++++++++--
 8 files changed, 239 insertions(+), 73 deletions(-)


base-commit: 96b3198c4025c11347651700b77e45a686d78553

Comments

James Morris Nov. 12, 2020, 4:59 a.m. UTC | #1

On Wed, 11 Nov 2020, Mickaël Salaün wrote:

> Hi,
> 
> This patch series fixes some issues and makes the Landlock filesystem
> access-control more consistent and deterministic when stacking multiple
> rulesets.  This is checked by current and new tests.  I also extended
> documentation and example to help users.
> 
> This series can be applied on top of
> https://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git/log/?h=landlock_lsm

Actually, given the number of fixes here, please respin so we get a 
cleaner initial PR for Linus.

> 
> Regards,
> 
> Mickaël Salaün (9):
>   landlock: Fix memory allocation error handling
>   landlock: Cosmetic fixes for filesystem management
>   landlock: Enforce deterministic interleaved path rules
>   landlock: Always intersect access rights
>   landlock: Add extra checks when inserting a rule
>   selftests/landlock: Extend layout1.inherit_superset
>   landlock: Clean up get_ruleset_from_fd()
>   landlock: Add help to enable Landlock as a stacked LSM
>   landlock: Extend documentation about limitations
> 
>  Documentation/userspace-api/landlock.rst   |  17 +++
>  samples/landlock/sandboxer.c               |  21 +++-
>  security/landlock/Kconfig                  |   4 +-
>  security/landlock/fs.c                     |  67 +++++-----
>  security/landlock/object.c                 |   5 +-
>  security/landlock/ruleset.c                |  34 ++---
>  security/landlock/syscall.c                |  24 ++--
>  tools/testing/selftests/landlock/fs_test.c | 140 +++++++++++++++++++--
>  8 files changed, 239 insertions(+), 73 deletions(-)
> 
> 
> base-commit: 96b3198c4025c11347651700b77e45a686d78553
>