typedef struct writex_hdr {
        u_int8_t wordCount;
        u_int8_t andXCommand;
        u_int8_t andXReserved;
        u_int16_t andXOffset;

        u_int16_t fid;
        u_int32_t offset;
        u_int16_t writeMode;

        u_int16_t remaining;
        u_int16_t dataLengthHigh;
        u_int16_t dataLength;
        u_int16_t dataOffset;
        u_int32_t highOffset;
        u_int16_t byteCount;
} SMB_WRITEX_REQ;