func isSysErrIsDir(err error) bool {
	return errors.Is(err, syscall.EISDIR)
}

// Check if the given error corresponds to ENOTDIR (is not a directory).
func isSysErrNotDir(err error) bool {
	return errors.Is(err, syscall.ENOTDIR)
}

// Check if the given error corresponds to the ENAMETOOLONG (name too long).
func isSysErrTooLong(err error) bool {
	return errors.Is(err, syscall.ENAMETOOLONG)
}

	ok := isSysErrTooLong(pathErr)
	if !ok {
		t.Fatalf("Unexpected error expecting %s", syscall.ENAMETOOLONG)
	}
	pathErr = &os.PathError{Err: syscall.ENOTDIR}
	ok = isSysErrNotDir(pathErr)
	if !ok {
		t.Fatalf("Unexpected error expecting %s", syscall.ENOTDIR)
	}
	if runtime.GOOS != globalWindowsOSName {
		pathErr = &os.PathError{Err: syscall.ENOTEMPTY}
		ok = isSysErrNotEmpty(pathErr)
		if !ok {

	err = fs.AppendFile(context.Background(), "voldir", "/file", []byte("hello"))
	if err != nil {
		t.Fatal(err)
	}

	// Try to create a file that includes a file in its path components.
	// In *nix, this returns syscall.ENOTDIR while in windows we receive the following error.
	err = fs.AppendFile(context.Background(), "voldir", "/file/obj1", []byte("hello"))
	if err != errFileAccessDenied {
		t.Errorf("expected: %s, got: %s", errFileAccessDenied, err)

pkg syscall (darwin-386), const ENOSTR = 99
pkg syscall (darwin-386), const ENOSYS = 78
pkg syscall (darwin-386), const ENOTBLK = 15
pkg syscall (darwin-386), const ENOTCONN = 57
pkg syscall (darwin-386), const ENOTDIR = 20
pkg syscall (darwin-386), const ENOTEMPTY = 66
pkg syscall (darwin-386), const ENOTRECOVERABLE = 104
pkg syscall (darwin-386), const ENOTSOCK = 38
pkg syscall (darwin-386), const ENOTSUP = 45

pkg syscall (netbsd-arm64-cgo), const ENOSYS = 78
pkg syscall (netbsd-arm64-cgo), const ENOTBLK = 15
pkg syscall (netbsd-arm64-cgo), const ENOTCONN = 57
pkg syscall (netbsd-arm64-cgo), const ENOTDIR = 20
pkg syscall (netbsd-arm64-cgo), const ENOTEMPTY = 66
pkg syscall (netbsd-arm64-cgo), const ENOTSOCK = 38
pkg syscall (netbsd-arm64-cgo), const ENOTSUP = 86
pkg syscall (netbsd-arm64-cgo), const ENOTTY = 25

pkg syscall (freebsd-arm64), const ENOTCAPABLE = 93
pkg syscall (freebsd-arm64), const ENOTCAPABLE Errno
pkg syscall (freebsd-arm64), const ENOTCONN = 57
pkg syscall (freebsd-arm64), const ENOTDIR = 20
pkg syscall (freebsd-arm64), const ENOTEMPTY = 66
pkg syscall (freebsd-arm64), const ENOTRECOVERABLE = 95
pkg syscall (freebsd-arm64), const ENOTRECOVERABLE Errno
pkg syscall (freebsd-arm64), const ENOTSOCK = 38

pkg syscall (darwin-arm64), const ENOSTR Errno
pkg syscall (darwin-arm64), const ENOSYS = 78
pkg syscall (darwin-arm64), const ENOTBLK = 15
pkg syscall (darwin-arm64), const ENOTCONN = 57
pkg syscall (darwin-arm64), const ENOTDIR = 20
pkg syscall (darwin-arm64), const ENOTEMPTY = 66
pkg syscall (darwin-arm64), const ENOTRECOVERABLE = 104
pkg syscall (darwin-arm64), const ENOTRECOVERABLE Errno
pkg syscall (darwin-arm64), const ENOTSOCK = 38

pkg syscall (freebsd-riscv64), const ENOTCAPABLE = 93 #53466
pkg syscall (freebsd-riscv64), const ENOTCAPABLE Errno #53466
pkg syscall (freebsd-riscv64), const ENOTCONN = 57 #53466
pkg syscall (freebsd-riscv64), const ENOTDIR = 20 #53466
pkg syscall (freebsd-riscv64), const ENOTEMPTY = 66 #53466
pkg syscall (freebsd-riscv64), const ENOTRECOVERABLE = 95 #53466
pkg syscall (freebsd-riscv64), const ENOTRECOVERABLE Errno #53466

pkg syscall, const ENOPROTOOPT Errno
pkg syscall, const ENOSPC Errno
pkg syscall, const ENOSYS Errno
pkg syscall, const ENOTBLK Errno
pkg syscall, const ENOTCONN Errno
pkg syscall, const ENOTDIR Errno
pkg syscall, const ENOTEMPTY Errno
pkg syscall, const ENOTSOCK Errno
pkg syscall, const ENOTSUP Errno
pkg syscall, const ENOTTY Errno
pkg syscall, const ENXIO Errno