+int drain_rcvbuf(int fd);
+
+int make_unix_socket(int style, bool nonblock,
+ const char *bind_path, const char *connect_path);
+int get_unix_name_len(socklen_t sun_len);
+
+/* Helpers for calling ioctl() on an AF_INET socket. */
+struct ifreq;
+int af_inet_ioctl(unsigned long int command, const void *arg);
+int af_inet_ifreq_ioctl(const char *name, struct ifreq *,
+ unsigned long int cmd, const char *cmd_name);
+
+#define closesocket close
+#endif
+
+#ifdef _WIN32
+static inline int make_unix_socket(int style, bool nonblock,
+ const char *bind_path,
+ const char *connect_path)
+{
+ return -EINVAL;
+}
+
+/* Windows defines the 'optval' argument as char * instead of void *. */
+#define setsockopt(sock, level, optname, optval, optlen) \
+ rpl_setsockopt(sock, level, optname, optval, optlen)
+static inline int rpl_setsockopt(int sock, int level, int optname,
+ const void *optval, socklen_t optlen)
+{
+ return (setsockopt)(sock, level, optname, optval, optlen);
+}
+
+#define getsockopt(sock, level, optname, optval, optlen) \
+ rpl_getsockopt(sock, level, optname, optval, optlen)
+static inline int rpl_getsockopt(int sock, int level, int optname,
+ void *optval, socklen_t *optlen)
+{
+ return (getsockopt)(sock, level, optname, optval, optlen);
+}
+#endif
+
+/* In Windows platform, errno is not set for socket calls.
+ * The last error has to be gotten from WSAGetLastError(). */
+static inline int sock_errno(void)
+{
+#ifdef _WIN32
+ return WSAGetLastError();
+#else
+ return errno;
+#endif
+}