[PATCH v9 03/11] landlock: Document init_layer_masks() helper

["Günther Noack" <gnoack3000@gmail.com>]

Add kernel-doc to the init_layer_masks() function.

Signed-off-by: Günther Noack <gnoack3000@gmail.com>
---
 security/landlock/fs.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/security/landlock/fs.c b/security/landlock/fs.c
index 277868e3c6ce..87fde50eb550 100644
--- a/security/landlock/fs.c
+++ b/security/landlock/fs.c
@@ -297,6 +297,19 @@ get_handled_accesses(const struct landlock_ruleset *const domain)
 	return access_dom & LANDLOCK_MASK_ACCESS_FS;
 }
 
+/**
+ * init_layer_masks - Initialize layer masks from an access request
+ *
+ * Populates @layer_masks such that for each access right in @access_request,
+ * the bits for all the layers are set where this access right is handled.
+ *
+ * @domain: The domain that defines the current restrictions.
+ * @access_request: The requested access rights to check.
+ * @layer_masks: The layer masks to populate.
+ *
+ * Returns: An access mask where each access right bit is set which is handled
+ * in any of the active layers in @domain.
+ */
 static inline access_mask_t
 init_layer_masks(const struct landlock_ruleset *const domain,
 		 const access_mask_t access_request,
-- 
2.38.0