typedef struct task_struct kthread_t;
typedef struct task_struct proc_t;
typedef short pri_t;
-typedef struct timespec timestruc_t; /* definition per SVr4 */
-typedef struct timespec timespec_t;
-typedef longlong_t hrtime_t;
typedef unsigned short ushort_t;
typedef u_longlong_t len_t;
typedef longlong_t diskaddr_t;