diff --git a/fs/internal.h b/fs/internal.h
index 9b976b5..6fdbdf2 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -106,6 +106,14 @@
 struct nameidata;
 extern struct file *nameidata_to_filp(struct nameidata *);
 extern void release_open_intent(struct nameidata *);
+struct open_flags {
+	int open_flag;
+	int mode;
+	int acc_mode;
+	int intent;
+};
+extern struct file *do_filp_open(int dfd, const char *pathname,
+		const struct open_flags *op, int lookup_flags);
 
 /*
  * inode.c