MYSQL_BIND -- we need to model at least part of that to suport bind params

mysql.h

typedef struct st_mysql_bind
{
  unsigned long *length;          /* output length pointer */
  my_bool       *is_null;         /* Pointer to null indicator */
  void          *buffer;          /* buffer to get/put data */
  /* set this if you want to track data truncations happened during fetch */
  my_bool       *error;
  unsigned char *row_ptr;         /* for the current data position */
  void (*store_param_func)(NET *net, struct st_mysql_bind *param);
  void (*fetch_result)(struct st_mysql_bind *, MYSQL_FIELD *,
                       unsigned char **row);
  void (*skip_result)(struct st_mysql_bind *, MYSQL_FIELD *,
                      unsigned char **row);
  /* output buffer length, must be set when fetching str/binary */
  unsigned long buffer_length;
  unsigned long offset;           /* offset position for char/binary fetch */
  unsigned long length_value;     /* Used if length is 0 */
  unsigned int  param_number;     /* For null count and error messages */
  unsigned int  pack_length;      /* Internal length for packed data */
  enum enum_field_types buffer_type;    /* buffer type */
  my_bool       error_value;      /* used if error is 0 */
  my_bool       is_unsigned;      /* set if integer type is unsigned */
  my_bool       long_data_used;   /* If used with mysql_send_long_data */
  my_bool       is_null_value;    /* Used if is_null is 0 */
  void *extension;
} MYSQL_BIND;