1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_LINUX_KDEV_T_H
3#define _UAPI_LINUX_KDEV_T_H
4#ifndef __KERNEL__
5
6/*
7Some programs want their definitions of MAJOR and MINOR and MKDEV
8from the kernel sources. These must be the externally visible ones.
9*/
10#define MAJOR(dev) ((dev)>>8)
11#define MINOR(dev) ((dev) & 0xff)
12#define MKDEV(ma,mi) ((ma)<<8 | (mi))
13#endif /* __KERNEL__ */
14#endif /* _UAPI_LINUX_KDEV_T_H */
15

source code of linux/include/uapi/linux/kdev_t.h