[PATCH 3/3] landlock: Simplify landlock_get_fs_access_mask()

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

Return the handled FS access mask as it is, instead of artificially
adding LANDLOCK_ACCESS_FS_REFER to it.

Since commit d6c7cf84a24f ("landlock: Simplify initially denied access
rights"), the merge operation already bakes the initially denied
access rights (LANDLOCK_ACCESS_FS_REFER) into the a layer's handled FS
access rights. -- They don't need to be added explicitly any more.

No functional change.

Signed-off-by: Günther Noack <gnoack3000@gmail.com>
---
 security/landlock/domain.h | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/security/landlock/domain.h b/security/landlock/domain.h
index 693e569f5387..1aa85c817d0a 100644
--- a/security/landlock/domain.h
+++ b/security/landlock/domain.h
@@ -258,16 +258,12 @@ static inline access_mask_t
 landlock_get_fs_access_mask(const struct landlock_domain *const domain,
 			    const u16 layer_level)
 {
-	access_mask_t handled = domain->handled_masks[layer_level].fs;
-
 	/*
-	 * Handles all initially denied by default access rights, but only for
-	 * layers handling filesystem accesses.
+	 * Initially denied by default access rights are already included for
+	 * layers handling filesystem accesses, see
+	 * landlock_upgrade_handled_access_masks().
 	 */
-	if (handled)
-		handled |= _LANDLOCK_ACCESS_FS_INITIALLY_DENIED;
-
-	return handled;
+	return domain->handled_masks[layer_level].fs;
 }
 
 static inline access_mask_t
-- 
2.56.0