rusage: &rusage,
	}, nil
}

func (p *Process) pidfdSendSignal(s syscall.Signal) error {
	handle, status := p.handleTransientAcquire()
	switch status {
	case statusDone:
		return ErrProcessDone
	case statusReleased:
		return errors.New("os: process already released")
	}
	defer p.handleTransientRelease()

	return convertESRCH(unix.PidFDSendSignal(handle, s))
}

func pidfdWorks() bool {

// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package unix

import "syscall"

func PidFDSendSignal(pidfd uintptr, s syscall.Signal) error {
	_, _, errno := syscall.Syscall(pidfdSendSignalTrap, pidfd, uintptr(s), 0)
	if errno != 0 {
		return errno
	}
	return nil
}

func PidFDOpen(pid, flags int) (uintptr, error) {

func pidfdFind(_ int) (uintptr, error) {
	return 0, syscall.ENOSYS
}

func (p *Process) pidfdRelease() {}

func (_ *Process) pidfdWait() (*ProcessState, error) {
	panic("unreachable")
}

func (_ *Process) pidfdSendSignal(_ syscall.Signal) error {
	panic("unreachable")

	s, ok := sig.(syscall.Signal)
	if !ok {
		return errors.New("os: unsupported signal type")
	}

	// Which type of Process do we have?
	switch p.mode {
	case modeHandle:
		// pidfd
		return p.pidfdSendSignal(s)
	case modePID:
		// Regular PID
		return p.pidSignal(s)
	default:
		panic("unreachable")
	}
}

func (p *Process) pidSignal(s syscall.Signal) error {
	if p.Pid == pidUnset {