diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h
index 365376d..a735258 100644
--- a/fs/exofs/exofs.h
+++ b/fs/exofs/exofs.h
@@ -124,4 +124,18 @@
 	return container_of(inode, struct exofs_i_info, vfs_inode);
 }
 
+/*************************
+ * function declarations *
+ *************************/
+/* inode.c               */
+void exofs_truncate(struct inode *inode);
+int exofs_setattr(struct dentry *, struct iattr *);
+
+/*********************
+ * operation vectors *
+ *********************/
+/* file.c            */
+extern const struct inode_operations exofs_file_inode_operations;
+extern const struct file_operations exofs_file_operations;
+
 #endif