func findProcess(pid int) (p *Process, err error) {
	h, err := pidfdFind(pid)
	if err == ErrProcessDone {
		// We can't return an error here since users are not expecting
		// it. Instead, return a process with a "done" state already
		// and let a subsequent Signal or Wait call catch that.
		return newDoneProcess(pid), nil
	} else if err != nil {
		// Ignore other errors from pidfdFind, as the callers

package os

import "syscall"

func ensurePidfd(sysAttr *syscall.SysProcAttr) *syscall.SysProcAttr {
	return sysAttr
}

func getPidfd(_ *syscall.SysProcAttr) (uintptr, bool) {
	return 0, false
}

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

func (p *Process) pidfdRelease() {}

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

	}

	return sysAttr
}

func getPidfd(sysAttr *syscall.SysProcAttr) (uintptr, bool) {
	if !pidfdWorks() {
		return 0, false
	}

	return uintptr(*sysAttr.PidFD), true
}

func pidfdFind(pid int) (uintptr, error) {
	if !pidfdWorks() {
		return 0, syscall.ENOSYS
	}

	h, err := unix.PidFDOpen(pid, 0)
	if err != nil {
		return 0, convertESRCH(err)
	}
	return h, nil
}