}

func (w WaitStatus) TrapCause() int { return -1 }

func wait4(pid uintptr, wstatus *WaitStatus, options uintptr, rusage *Rusage) (wpid uintptr, err uintptr)

func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
	r0, e1 := wait4(uintptr(pid), wstatus, uintptr(options), rusage)
	if e1 != 0 {
		err = Errno(e1)
	}
	return int(r0), err
}

	return 0, ENOSYS
}
func StartProcess(argv0 string, argv []string, attr *ProcAttr) (pid int, handle uintptr, err error) {
	return 0, 0, ENOSYS
}
func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
	return 0, ENOSYS
}

type Iovec struct{} // dummy

type Timespec struct {
	Sec  int64
	Nsec int64
}

type Timeval struct {
	Sec  int64
	Usec int64

//sys  wait4(pid _Pid_t, status *_C_int, options int, rusage *Rusage) (wpid _Pid_t, err error)

func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
	var status _C_int
	var r _Pid_t
	err = ERESTART
	// AIX wait4 may return with ERESTART errno, while the process is still
	// active.
	for err == ERESTART {
		r, err = wait4(_Pid_t(pid), &status, options, rusage)
	}
	wpid = int(r)

}

func (w WaitStatus) TrapCause() int { return -1 }

//sys	wait4(pid int, wstatus *_C_int, options int, rusage *Rusage) (wpid int, err error)

func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
	var status _C_int
	wpid, err = wait4(pid, &status, options, rusage)
	if wstatus != nil {
		*wstatus = WaitStatus(status)
	}
	return
}

	SYS_UNLINK         = 10  // { int sys_unlink(const char *path); }
	SYS_WAIT4          = 11  // { pid_t sys_wait4(pid_t pid, int *status, int options, struct rusage *rusage); }
	SYS_CHDIR          = 12  // { int sys_chdir(const char *path); }
	SYS_FCHDIR         = 13  // { int sys_fchdir(int fd); }
	SYS_MKNOD          = 14  // { int sys_mknod(const char *path, mode_t mode, dev_t dev); }

	SYS_UNLINK         = 10  // { int sys_unlink(const char *path); }
	SYS_WAIT4          = 11  // { pid_t sys_wait4(pid_t pid, int *status, int options, struct rusage *rusage); }
	SYS_CHDIR          = 12  // { int sys_chdir(const char *path); }
	SYS_FCHDIR         = 13  // { int sys_fchdir(int fd); }
	SYS_MKNOD          = 14  // { int sys_mknod(const char *path, mode_t mode, dev_t dev); }

	SYS_UNLINK         = 10  // { int sys_unlink(const char *path); }
	SYS_WAIT4          = 11  // { pid_t sys_wait4(pid_t pid, int *status, int options, struct rusage *rusage); }
	SYS_CHDIR          = 12  // { int sys_chdir(const char *path); }
	SYS_FCHDIR         = 13  // { int sys_fchdir(int fd); }
	SYS_MKNOD          = 14  // { int sys_mknod(const char *path, mode_t mode, dev_t dev); }

	SYS_UNLINK         = 10  // { int sys_unlink(const char *path); }
	SYS_WAIT4          = 11  // { pid_t sys_wait4(pid_t pid, int *status, int options, struct rusage *rusage); }
	SYS_CHDIR          = 12  // { int sys_chdir(const char *path); }
	SYS_FCHDIR         = 13  // { int sys_fchdir(int fd); }
	SYS_MKNOD          = 14  // { int sys_mknod(const char *path, mode_t mode, dev_t dev); }

//sysnb	Getpid() (pid int)
//sysnb	Getppid() (ppid int)
//sys	Getpriority(which int, who int) (prio int, err error)
//sysnb	Getrlimit(which int, lim *Rlimit) (err error)
//sysnb	Getrusage(who int, rusage *Rusage) (err error)
//sysnb	Getsid(pid int) (sid int, err error)
//sysnb	Gettimeofday(tv *Timeval) (err error)
//sysnb	Getuid() (uid int)
//sys	Issetugid() (tainted bool)
//sys	Kill(pid int, signum Signal) (err error)

//sysnb getrusage(who int, rusage *rusage_zos) (err error) = SYS_GETRUSAGE

func Getrusage(who int, rusage *Rusage) (err error) {
	var ruz rusage_zos
	err = getrusage(who, &ruz)
	//Only the first two fields of Rusage are set
	rusage.Utime.Sec = ruz.Utime.Sec
	rusage.Utime.Usec = int64(ruz.Utime.Usec)
	rusage.Stime.Sec = ruz.Stime.Sec
	rusage.Stime.Usec = int64(ruz.Stime.Usec)
	return
}