This function returns a pointer to the backend structure of the first backend. If you wish to iterate through all of the backends, use this function in conjunction with slapi_get_next_backend(). For example:
Slapi_Backend *be = NULL; char *cookie = NULL; be = slapi_get_first_backend (&cookie); while (be) { ... be = slapi_get_next_backend (cookie); } slapi_ch_free ((void**)&cookie);