kdev_t.h

来自「Axis 221 camera embedded programing inte」· C头文件 代码 · 共 12 行

#ifndef _LINUX_KDEV_T_H
#define _LINUX_KDEV_T_H

/*
Some programs want their definitions of MAJOR and MINOR and MKDEV
from the kernel sources. These must be the externally visible ones.
*/
#define MAJOR(dev)	((dev)>>8)
#define MINOR(dev)	((dev) & 0xff)
#define MKDEV(ma,mi)	((ma)<<8 | (mi))
#endif