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[v4,2/2] docs: add fail_lsm_hooks info to fault-injection.rst

Message ID 20201111104409.1530957-3-a.nogikh@gmail.com (mailing list archive)
State New
Headers show
Series security: add fault injection to LSM hooks | expand

Commit Message

Aleksandr Nogikh Nov. 11, 2020, 10:44 a.m. UTC
From: Aleksandr Nogikh <nogikh@google.com>

Describe fail_lsm_hooks fault injection capability.

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