BIO_C_SET_FILENAME
#define BIO_read_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
#define BIO_write_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
#define BIO_append_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
#define BIO_rw_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
case BIO_C_SET_FILENAME: