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-rw-r--r--security/landlock/fs.c13
1 files changed, 13 insertions, 0 deletions
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,