--- src/sys/sys/socketvar.h	2008/05/27 05:25:36	1.31
+++ src/sys/sys/socketvar.h	2008/05/27 17:31:12	1.32
@@ -217,6 +217,8 @@ struct	xsocket {
 
 /* do we have to send all at once on a socket? */
 
+#ifdef _KERNEL
+
 /*
  * How much space is there in a socket buffer (so->so_snd or so->so_rcv)?
  * This is problematical if the fields are unsigned, as the space might
@@ -240,6 +242,8 @@ ssb_space(struct signalsockbuf *ssb)
 	return((bleft < mleft) ? bleft : mleft);
 }
 
+#endif
+
 #define ssb_append(ssb, m)						\
 	sbappend(&(ssb)->sb, m)