diff -drupN a/include/linux/fivm.h b/include/linux/fivm.h
--- a/include/linux/fivm.h	1970-01-01 03:00:00.000000000 +0300
+++ b/include/linux/fivm.h	2022-06-12 05:28:14.000000000 +0300
@@ -0,0 +1,13 @@
+#ifndef _LINUX_FIVM_H
+#define _LINUX_FIVM_H
+
+#include <linux/fs.h>
+#define CONFIG_FILE_INTEGRITY
+struct fivm_operation {
+	int (*mmap_verify)(struct file *, unsigned long);
+	int (*open_verify)(struct file *, const char *, int);
+};
+
+extern int fivm_mmap_verify(struct file *file, unsigned long prot);
+extern int fivm_open_verify(struct file *file, const char *pathname, int mask);
+#endif /*_LINUX_FIVM_H*/