fix
diff --git a/kernel/dir.c b/kernel/dir.c
index 7a8567c..87dec6a 100644
--- a/kernel/dir.c
+++ b/kernel/dir.c
@@ -762,6 +762,11 @@
 	int err;
 	int is_truncate = 0;
 	
+	if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
+		err = inode_change_ok(inode, attr);
+		if (err)
+			return err;
+	}
 
 	if (attr->ia_valid & ATTR_SIZE) {
 		unsigned long limit;