1. 根目录:
2. arch
3. s390
4. include
5. uapi
6. asm
7. ioctls.h

#ifndef __ARCH_S390_IOCTLS_H__
#define __ARCH_S390_IOCTLS_H__

#define FIOQSIZE	0x545E

#include <asm-generic/ioctls.h>

#endif