-bfilter_t *FilterCreate(int type, int bmask, char *str, int exclude);
-bfilter_t *FilterAdd(bfilter_t *pFilter, int type, int bmask, char *str, int exclude);
+bfilter_t *FilterCreate(int type, int bmask, const char *str, int exclude);
+bfilter_t *FilterAdd(bfilter_t *pFilter, int type, int bmask, const char *str, int exclude);