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
}

		}

		// Wait for stop.
		var status syscall.WaitStatus
		for {
			_, err = syscall.Wait4(cmd.Process.Pid, &status, syscall.WUNTRACED, nil)
			if err != syscall.EINTR {
				break
			}
		}
		if err != nil {
			return fmt.Errorf("error waiting for stop: %w", err)
		}

		if !status.Stopped() {
			return fmt.Errorf("unexpected wait status: %v", status)
		}

		// Take TTY.

	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
}

func Umask(mask int) int {
	return 0
}

type Timespec struct {
	Sec  int64
	Nsec int64

	}
	return syscall.Signal(w>>shift) & 0xFF
}

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

//sys	wait4(pid int32, statusp *_C_int, options int, rusage *Rusage) (wpid int32, err error)

func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (int, error) {
	var status _C_int
	rpid, err := wait4(int32(pid), &status, options, rusage)
	wpid := int(rpid)
	if wpid == -1 {
		return wpid, err
	}

	SYS_OPEN  = 5 // { int open(char *path, int flags, int mode); }
	SYS_CLOSE = 6 // { int close(int fd); }
	SYS_WAIT4 = 7 // { int wait4(int pid, int *status, int options, struct rusage *rusage); } wait4 wait_args int
	// SYS_NOSYS = 8;  // { int nosys(void); } __nosys nosys_args int
	SYS_LINK                   = 9   // { int link(char *path, char *link); }

	if w.StopSignal() != SIGTRAP {
		return -1
	}
	return int(w>>shift) >> 8
}

//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_OPEN                     = 5   // { int open(char *path, int flags, int mode); }
	SYS_CLOSE                    = 6   // { int close(int fd); }
	SYS_WAIT4                    = 7   // { int wait4(int pid, int *status, \
	SYS_LINK                     = 9   // { int link(char *path, char *link); }
	SYS_UNLINK                   = 10  // { int unlink(char *path); }
	SYS_CHDIR                    = 12  // { int chdir(char *path); }

	n = int(r0)
	if r0 == -1 && er != nil {
		err = er
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error) {
	r0, er := C.wait4(C.int(pid), C.uintptr_t(uintptr(unsafe.Pointer(status))), C.int(options), C.uintptr_t(uintptr(unsafe.Pointer(rusage))))
	wpid = Pid_t(r0)
	if r0 == -1 && er != nil {
		err = er

	SYS_OPEN                     = 5   // { int open(char *path, int flags, int mode); }
	SYS_CLOSE                    = 6   // { int close(int fd); }
	SYS_WAIT4                    = 7   // { int wait4(int pid, int *status, \
	SYS_LINK                     = 9   // { int link(char *path, char *link); }
	SYS_UNLINK                   = 10  // { int unlink(char *path); }
	SYS_CHDIR                    = 12  // { int chdir(char *path); }

	SYS_OPEN                     = 5   // { int open(char *path, int flags, int mode); }
	SYS_CLOSE                    = 6   // { int close(int fd); }
	SYS_WAIT4                    = 7   // { int wait4(int pid, int *status, \
	SYS_LINK                     = 9   // { int link(char *path, char *link); }
	SYS_UNLINK                   = 10  // { int unlink(char *path); }
	SYS_CHDIR                    = 12  // { int chdir(char *path); }