.ref-BSD-3/usr/include/sys/types.h

typedef struct _physadr { int r[1]; } *physadr;
typedef long            daddr_t;
typedef char *          caddr_t;
typedef unsigned short  ino_t;
typedef int             swblk_t;
typedef int             size_t;
typedef long            time_t;
typedef int             label_t[10];
typedef short           dev_t;
typedef long            off_t;
/* major part of a device */
#define major(x)        (int)(((unsigned)x>>8)&0377)

/* minor part of a device */
#define minor(x)        (int)(x&0377)

/* make a device number */
#define makedev(x,y)    (dev_t)(((x)<<8) | (y))