linux-kernel - [RFC PATCH v2 2/2] docs: add fail_lsm

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Message-Id: <20201026125227.54520-3-a.nogikh@gmail.com>
Date:   Mon, 26 Oct 2020 12:52:27 +0000
From:   Aleksandr Nogikh <a.nogikh@...il.com>
To:     jmorris@...ei.org, serge@...lyn.com, akinobu.mita@...il.com
Cc:     andreyknvl@...gle.com, dvyukov@...gle.com, elver@...gle.com,
        glider@...gle.com, keescook@...gle.com,
        linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        Aleksandr Nogikh <nogikh@...gle.com>
Subject: [RFC PATCH v2 2/2] docs: add fail_lsm_hooks info to fault-injection.rst

From: Aleksandr Nogikh <nogikh@...gle.com>

Describe fail_lsm_hooks fault injection capability.

Signed-off-by: Aleksandr Nogikh <nogikh@...gle.com>
---
v2:
- Added this commit.
---
 Documentation/fault-injection/fault-injection.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/fault-injection/fault-injection.rst b/Documentation/fault-injection/fault-injection.rst
index 31ecfe44e5b4..48705adfbc18 100644
--- a/Documentation/fault-injection/fault-injection.rst
+++ b/Documentation/fault-injection/fault-injection.rst
@@ -48,6 +48,12 @@ Available fault injection capabilities
   status code is NVME_SC_INVALID_OPCODE with no retry. The status code and
   retry flag can be set via the debugfs.
 
+- fail_lsm_hooks
+
+  injects failures into LSM hooks. When a fault is injected, actual hooks
+  are not executed and a code from /sys/kernel/debug/fail_lsm_hooks/retval
+  is returned (the default value is -EACCES).
+
 
 Configure fault-injection capabilities behavior
 -----------------------------------------------
-- 
2.29.0.rc1.297.gfa9743e501-goog