diff mbox series

[RFC,v1,3/3] landlock: Document network restrictions tied to sockets

Message ID 20240719150618.197991-4-mic@digikod.net (mailing list archive)
State Handled Elsewhere
Headers show
Series Use socket's Landlock domain | expand

Commit Message

Mickaël Salaün July 19, 2024, 3:06 p.m. UTC 
The Landlock domain used to restrict operations on a socket is the
domain from the thread that created this socket.

Cc: Günther Noack <gnoack@google.com>
Cc: Ivanov Mikhail <ivanov.mikhail1@huawei-partners.com>
Cc: Konstantin Meskhidze <konstantin.meskhidze@huawei.com>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Tahera Fahimi <fahimitahera@gmail.com>
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Link: https://lore.kernel.org/r/20240719150618.197991-4-mic@digikod.net
---
 Documentation/userspace-api/landlock.rst | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/Documentation/userspace-api/landlock.rst b/Documentation/userspace-api/landlock.rst
index 37dafce8038b..4a9bfff575d5 100644
--- a/Documentation/userspace-api/landlock.rst
+++ b/Documentation/userspace-api/landlock.rst
@@ -529,7 +529,9 @@  Network support (ABI < 4)
 Starting with the Landlock ABI version 4, it is now possible to restrict TCP
 bind and connect actions to only a set of allowed ports thanks to the new
 ``LANDLOCK_ACCESS_NET_BIND_TCP`` and ``LANDLOCK_ACCESS_NET_CONNECT_TCP``
-access rights.
+access rights.  These restrictions are tied to a socket and are inherited from
+the sandboxed thread that created this socket.  Hence, sockets created before
+sandboxing are not restricted.
 
 IOCTL (ABI < 5)
 ---------------