From: Ivanov Mikhail <ivanov.mikhail1@huawei-partners.com>
To: <mic@digikod.net>
Cc: <willemdebruijn.kernel@gmail.com>, <gnoack3000@gmail.com>,
<linux-security-module@vger.kernel.org>, <netdev@vger.kernel.org>,
<netfilter-devel@vger.kernel.org>, <yusongping@huawei.com>,
<artem.kuzin@huawei.com>, <konstantin.meskhidze@huawei.com>
Subject: [RFC PATCH v1 00/10] Socket type control for Landlock
Date: Mon, 8 Apr 2024 17:39:17 +0800 [thread overview]
Message-ID: <20240408093927.1759381-1-ivanov.mikhail1@huawei-partners.com> (raw)
Patchset implements new type of Landlock rule, that restricts actions for
sockets of any protocol. Such restriction would be useful to ensure
that a sandboxed process uses only necessary protocols.
See [2] for more cases.
The rules store information about the socket family(aka domain) and type.
struct landlock_socket_attr {
__u64 allowed_access;
int domain; // see socket(2)
int type; // see socket(2)
}
Patchset currently implements rule only for socket_create() method, but
other necessary rules will also be impemented. [1]
Code coverage(gcov) report with the launch of all the landlock selftests:
* security/landlock:
lines......: 94.7% (784 of 828 lines)
functions..: 97.2% (105 of 108 functions)
* security/landlock/socket.c:
lines......: 100.0% (33 of 33 lines)
functions..: 100.0% (5 of 5 functions)
[1] https://lore.kernel.org/all/b8a2045a-e7e8-d141-7c01-bf47874c7930@digikod.net/
[2] https://lore.kernel.org/all/ZJvy2SViorgc+cZI@google.com/
Ivanov Mikhail (10):
landlock: Support socket access-control
landlock: Add hook on socket_create()
selftests/landlock: Create 'create' test
selftests/landlock: Create 'socket_access_rights' test
selftests/landlock: Create 'rule_with_unknown_access' test
selftests/landlock: Create 'rule_with_unhandled_access' test
selftests/landlock: Create 'inval' test
selftests/landlock: Create 'ruleset_overlap' test
selftests/landlock: Create 'ruleset_with_unknown_access' test
samples/landlock: Support socket protocol restrictions
include/uapi/linux/landlock.h | 49 ++
samples/landlock/sandboxer.c | 149 +++++-
security/landlock/Makefile | 2 +-
security/landlock/limits.h | 5 +
security/landlock/net.c | 2 +-
security/landlock/ruleset.c | 35 +-
security/landlock/ruleset.h | 44 +-
security/landlock/setup.c | 2 +
security/landlock/socket.c | 115 +++++
security/landlock/socket.h | 19 +
security/landlock/syscalls.c | 55 ++-
tools/testing/selftests/landlock/base_test.c | 2 +-
.../testing/selftests/landlock/socket_test.c | 457 ++++++++++++++++++
13 files changed, 910 insertions(+), 26 deletions(-)
create mode 100644 security/landlock/socket.c
create mode 100644 security/landlock/socket.h
create mode 100644 tools/testing/selftests/landlock/socket_test.c
--
2.34.1
next reply other threads:[~2024-04-08 9:40 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-08 9:39 Ivanov Mikhail [this message]
2024-04-08 9:39 ` [RFC PATCH v1 01/10] landlock: Support socket access-control Ivanov Mikhail
2024-04-08 19:49 ` Günther Noack
2024-04-11 15:16 ` Ivanov Mikhail
2024-04-12 15:22 ` Günther Noack
2024-04-12 15:41 ` Mickaël Salaün
2024-04-12 15:46 ` Mickaël Salaün
2024-05-16 13:59 ` Ivanov Mikhail
2024-04-08 9:39 ` [RFC PATCH v1 02/10] landlock: Add hook on socket_create() Ivanov Mikhail
2024-04-08 9:39 ` [RFC PATCH v1 03/10] selftests/landlock: Create 'create' test Ivanov Mikhail
2024-04-08 13:08 ` Günther Noack
2024-04-11 15:58 ` Ivanov Mikhail
2024-05-08 10:38 ` Mickaël Salaün
2024-05-16 13:54 ` Ivanov Mikhail
2024-05-17 15:24 ` Mickaël Salaün
2024-04-08 9:39 ` [RFC PATCH v1 04/10] selftests/landlock: Create 'socket_access_rights' test Ivanov Mikhail
2024-04-08 9:39 ` [RFC PATCH v1 05/10] selftests/landlock: Create 'rule_with_unknown_access' test Ivanov Mikhail
2024-04-08 9:39 ` [RFC PATCH v1 06/10] selftests/landlock: Create 'rule_with_unhandled_access' test Ivanov Mikhail
2024-04-08 9:39 ` [RFC PATCH v1 07/10] selftests/landlock: Create 'inval' test Ivanov Mikhail
2024-04-08 9:39 ` [RFC PATCH v1 08/10] selftests/landlock: Create 'ruleset_overlap' test Ivanov Mikhail
2024-04-08 9:39 ` [RFC PATCH v1 09/10] selftests/landlock: Create 'ruleset_with_unknown_access' test Ivanov Mikhail
2024-04-08 9:39 ` [RFC PATCH v1 10/10] samples/landlock: Support socket protocol restrictions Ivanov Mikhail
2024-04-08 13:12 ` [RFC PATCH v1 00/10] Socket type control for Landlock Günther Noack
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