+/* For BIO_s_bio() */
+#define BIO_set_write_buf_size(b,size) (int)BIO_ctrl(b,BIO_C_SET_WRITE_BUF_SIZE,size,NULL)
+#define BIO_get_write_buf_size(b,size) (size_t)BIO_ctrl(b,BIO_C_GET_WRITE_BUF_SIZE,size,NULL)
+#define BIO_make_bio_pair(b1,b2) (int)BIO_ctrl(b1,BIO_C_MAKE_BIO_PAIR,0,b2)
+#define BIO_destroy_bio_pair(b) (int)BIO_ctrl(b,BIO_C_DESTROY_BIO_PAIR,0,NULL)
+#define BIO_shutdown_wr(b) (int)BIO_ctrl(b, BIO_C_SHUTDOWN_WR, 0, NULL)
+/* macros with inappropriate type -- but ...pending macros use int too: */
+#define BIO_get_write_guarantee(b) (int)BIO_ctrl(b,BIO_C_GET_WRITE_GUARANTEE,0,NULL)
+#define BIO_get_read_request(b) (int)BIO_ctrl(b,BIO_C_GET_READ_REQUEST,0,NULL)
+size_t BIO_ctrl_get_write_guarantee(BIO *b);
+size_t BIO_ctrl_get_read_request(BIO *b);
+int BIO_ctrl_reset_read_request(BIO *b);
+
+/* ctrl macros for dgram */
+#define BIO_ctrl_dgram_connect(b,peer) \
+ (int)BIO_ctrl(b,BIO_CTRL_DGRAM_CONNECT,0, (char *)peer)
+#define BIO_ctrl_set_connected(b, state, peer) \
+ (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_CONNECTED, state, (char *)peer)
+#define BIO_dgram_recv_timedout(b) \
+ (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP, 0, NULL)
+#define BIO_dgram_send_timedout(b) \
+ (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP, 0, NULL)
+#define BIO_dgram_set_peer(b,peer) \
+ (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, (char *)peer)
+
+/* These two aren't currently implemented */
+/* int BIO_get_ex_num(BIO *bio); */
+/* void BIO_set_ex_free_func(BIO *bio,int idx,void (*cb)()); */
+int BIO_set_ex_data(BIO *bio,int idx,void *data);
+void *BIO_get_ex_data(BIO *bio,int idx);
+int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
+ CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
+unsigned long BIO_number_read(BIO *bio);
+unsigned long BIO_number_written(BIO *bio);
+
+# ifndef OPENSSL_NO_FP_API
+# if defined(OPENSSL_SYS_WIN16) && defined(_WINDLL)
+BIO_METHOD *BIO_s_file_internal(void);
+BIO *BIO_new_file_internal(char *filename, char *mode);
+BIO *BIO_new_fp_internal(FILE *stream, int close_flag);
+# define BIO_s_file BIO_s_file_internal
+# define BIO_new_file BIO_new_file_internal
+# define BIO_new_fp BIO_new_fp_internal
+# else /* FP_API */
+BIO_METHOD *BIO_s_file(void );
+BIO *BIO_new_file(const char *filename, const char *mode);
+BIO *BIO_new_fp(FILE *stream, int close_flag);
+# define BIO_s_file_internal BIO_s_file
+# define BIO_new_file_internal BIO_new_file
+# define BIO_new_fp_internal BIO_s_file
+# endif /* FP_API */
+# endif