# include <inet.h>
# else
# include <sys/socket.h>
+# ifndef NO_SYS_UN_H
+# ifdef OPENSSL_SYS_VXWORKS
+# include <streams/un.h>
+# else
+# include <sys/un.h>
+# endif
+# ifndef UNIX_PATH_MAX
+# define UNIX_PATH_MAX sizeof(((struct sockaddr_un *)NULL)->sun_path)
+# endif
+# endif
# ifdef FILIO_H
# include <sys/filio.h> /* Added for FIONBIO under unixware */
# endif