private static void setCreateDisposition(final Smb2CreateRequest req, final int flags) {
        if ((flags & SmbConstants.O_TRUNC) == O_TRUNC && (flags & SmbConstants.O_CREAT) == O_CREAT) {
            req.setCreateDisposition(Smb2CreateRequest.FILE_OVERWRITE_IF);
        } else if ((flags & SmbConstants.O_TRUNC) == O_TRUNC) {
            req.setCreateDisposition(Smb2CreateRequest.FILE_OVERWRITE);

    // create if the file does not exist
    static final int O_CREAT = 0x0010;
    // fail if the file exists
    static final int O_EXCL = 0x0020;
    // truncate if the file exists
    static final int O_TRUNC = 0x0040;

    // share access
    /**
     * When specified as the {@code shareAccess} constructor parameter,
     * other SMB clients (including other threads making calls into jCIFS)