return utimensat(dirfd, path, nil, flags)
	}
	if len(ts) != 2 {
		return EINVAL
	}
	return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags)
}

func Futimesat(dirfd int, path string, tv []Timeval) error {
	if tv == nil {
		return futimesat(dirfd, path, nil)
	}
	if len(tv) != 2 {
		return EINVAL
	}
	return futimesat(dirfd, path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
}

			if tcpStats != nil {
				return nil, errnoErr(EINVAL)
			}
			tcpStats = (*nwmTCPStatsEntry)(unsafe.Pointer(ptr))
		case nwmIPStatsIdentifier:
		case nwmIPGStatsIdentifier:
		case nwmUDPStatsIdentifier:
		case nwmICMPGStatsEntry:
		case nwmICMPTStatsEntry:
		default:
			return nil, errnoErr(EINVAL)
		}
	}
	if tcpStats == nil {
		return nil, errnoErr(EINVAL)
	}

// s, with a terminating NUL added. If s contains a NUL byte at any
// location, it returns (nil, [EINVAL]). Unpaired surrogates
// are encoded using WTF-8.
func UTF16FromString(s string) ([]uint16, error) {
	if bytealg.IndexByteString(s, 0) != -1 {
		return nil, EINVAL
	}
	// Valid UTF-8 characters between 1 and 3 bytes require one uint16.
	// Valid UTF-8 characters of 4 bytes require two uint16.

}

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
	}

// IsRestricted reports whether the access token t is a restricted token.
func (t Token) IsRestricted() (isRestricted bool, err error) {
	isRestricted, err = isTokenRestricted(t)
	if !isRestricted && err == syscall.EINVAL {
		// If err is EINVAL, this returned ERROR_SUCCESS indicating a non-restricted token.
		err = nil
	}
	return
}

const (
	WTS_CONSOLE_CONNECT        = 0x1
	WTS_CONSOLE_DISCONNECT     = 0x2

	EHOSTDOWN       = Errno(0x93)
	EHOSTUNREACH    = Errno(0x94)
	EIDRM           = Errno(0x24)
	EILSEQ          = Errno(0x58)
	EINPROGRESS     = Errno(0x96)
	EINTR           = Errno(0x4)
	EINVAL          = Errno(0x16)
	EIO             = Errno(0x5)
	EISCONN         = Errno(0x85)
	EISDIR          = Errno(0x15)
	EL2HLT          = Errno(0x2c)
	EL2NSYNC        = Errno(0x26)
	EL3HLT          = Errno(0x27)

// Do the interface allocations only once for common
// Errno values.
const (
	errnoERROR_IO_PENDING = 997
)

var (
	errERROR_IO_PENDING error = Errno(errnoERROR_IO_PENDING)
	errERROR_EINVAL     error = EINVAL
)

// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e Errno) error {
	switch e {
	case 0:
		return errERROR_EINVAL
	case errnoERROR_IO_PENDING:

		{0, io.SeekCurrent, 2<<32 - 1},
	}
	for i, tt := range tests {
		off, err := f.Seek(tt.in, tt.whence)
		if off != tt.out || err != nil {
			if e, ok := err.(*PathError); ok && e.Err == syscall.EINVAL && tt.out > 1<<32 && runtime.GOOS == "linux" {
				mounts, _ := ReadFile("/proc/mounts")
				if strings.Contains(string(mounts), "reiserfs") {
					// Reiserfs rejects the big seeks.