Introducing LANDLOCK_SCOPED_ABSTRACT_UNIX_SOCKET as an IPC scoping
mechanism in Landlock ABI version 6, and updating ruleset_attr,
Landlock ABI version, and access rights code blocks based on that.

Signed-off-by: Tahera Fahimi <redacted>
---
v8:
- Improving documentation by specifying differences between scoped and
  non-scoped domains.
- Adding review notes of version 7.
- Update date
v7:
- Add "LANDLOCK_SCOPED_ABSTRACT_UNIX_SOCKET" explanation to IPC scoping
  section and updating ABI to version 6.
- Adding "scoped" attribute to the Access rights section.
- In current limitation, unnamed sockets are specified as sockets that
  are not restricted.
- Update date
---
 Documentation/userspace-api/landlock.rst | 33 ++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/Documentation/userspace-api/landlock.rst b/Documentation/userspace-api/landlock.rst
index 07b63aec56fa..0582f93bd952 100644
--- a/Documentation/userspace-api/landlock.rst
+++ b/Documentation/userspace-api/landlock.rst

@@ -8,7 +8,7 @@ Landlock: unprivileged access control
 =====================================
 
 :Author: Mickaël Salaün
-:Date: April 2024
+:Date: July 2024