*/
import "C"

const (
	_EPERM     = C.EPERM
	_ENOENT    = C.ENOENT
	_EINTR     = C.EINTR
	_EAGAIN    = C.EAGAIN
	_ENOMEM    = C.ENOMEM
	_EACCES    = C.EACCES
	_EFAULT    = C.EFAULT
	_EINVAL    = C.EINVAL
	_ETIMEDOUT = C.ETIMEDOUT

	_PROT_NONE  = C.PROT_NONE
	_PROT_READ  = C.PROT_READ
	_PROT_WRITE = C.PROT_WRITE
	_PROT_EXEC  = C.PROT_EXEC

	_MAP_ANON      = C.MAP_ANONYMOUS
	_MAP_PRIVATE   = C.MAP_PRIVATE

	var v BpfVersion
	err := ioctlPtr(fd, BIOCVERSION, unsafe.Pointer(&v))
	if err != nil {
		return err
	}
	if v.Major != BPF_MAJOR_VERSION || v.Minor != BPF_MINOR_VERSION {
		return EINVAL
	}
	return nil
}

// Deprecated: Use golang.org/x/net/bpf instead.
func BpfHeadercmpl(fd int) (int, error) {
	var f int
	err := ioctlPtr(fd, BIOCGHDRCMPLT, unsafe.Pointer(&f))
	if err != nil {

	// TODO(panjf2000): run some tests to see if we should unlock the non-streams for splice.
	// Streams benefit the most from the splice(2), non-streams are not even supported in old kernels
	// where splice(2) will just return EINVAL; newer kernels support non-streams like UDP, but I really
	// doubt that splice(2) could help non-streams, cuz they usually send small frames respectively
	// and one splice call would result in one frame.

	select {
	case result, ok := <-listener.acceptCh:
		if ok {
			return result.conn, result.err
		}
	case <-listener.ctx.Done():
	}
	return nil, syscall.EINVAL
}

// Close - closes underneath all TCP listeners.
func (listener *httpListener) Close() (err error) {
	listener.ctxCanceler()

	for i := range listener.listeners {
		listener.listeners[i].Close()
	}

}

func Pipe(p []Handle) (err error) {
	if len(p) != 2 {
		return syscall.EINVAL
	}
	var r, w Handle
	e := CreatePipe(&r, &w, makeInheritSa(), 0)
	if e != nil {
		return e
	}
	p[0] = r
	p[1] = w
	return nil
}

func Utimes(path string, tv []Timeval) (err error) {
	if len(tv) != 2 {
		return syscall.EINVAL
	}
	pathp, e := UTF16PtrFromString(path)
	if e != nil {
		return e
	}

		}
		return 0, newDNSError(winError("getaddrinfow", e), network+"/"+service, "")
	}
	defer syscall.FreeAddrInfoW(result)
	if result == nil {
		return 0, newDNSError(syscall.EINVAL, network+"/"+service, "")
	}
	addr := unsafe.Pointer(result.Addr)
	switch result.Family {
	case syscall.AF_INET:
		a := (*syscall.RawSockaddrInet4)(addr)
		return int(syscall.Ntohs(a.Port)), nil

				if node.Name[i] != 0 {
					n = append(n, byte(node.Name[i]))
				}
			}
			if string(n) == part {
				mib = append(mib, _C_int(node.Num))
				break
			}
		}
		if len(mib) != partno+1 {
			return nil, EINVAL
		}
	}

	return mib, nil
}

func direntIno(buf []byte) (uint64, bool) {
	return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
}

		return nil
	}

	// The rmdir system call does not permit removing ".",
	// so we don't permit it either.
	if endsWithDot(path) {
		return &PathError{Op: "RemoveAll", Path: path, Err: syscall.EINVAL}
	}

	// Simple case: if Remove works, we're done.
	err := Remove(path)
	if err == nil || IsNotExist(err) {
		return nil
	}

	// RemoveAll recurses by deleting the path base from
	// its parent directory

	// this call can fail with EAGAIN because it's best-effort.
	// Also, when it returns an error, it's only for the last
	// huge page in the region requested.
	//
	// It can also sometimes return EINVAL if the corresponding
	// region hasn't been backed by physical memory. This is
	// difficult to guarantee in general, and it also means
	// there's no way to distinguish whether this syscall is
	// actually available. Oops.

		return gList{}, 0
	}
	var tp *timespec
	var ts timespec
	if delay < 0 {
		tp = nil
	} else if delay == 0 {
		tp = &ts
	} else {
		ts.setNsec(delay)
		if ts.tv_sec > 1e6 {
			// Darwin returns EINVAL if the sleep time is too long.
			ts.tv_sec = 1e6
		}
		tp = &ts
	}
	var events [64]keventt
retry:
	n := kevent(kq, nil, 0, &events[0], int32(len(events)), tp)
	if n < 0 {