--- Net2/sys/socketvar.h	2018/04/24 18:03:58	1.1.1.1
+++ Net2/sys/socketvar.h	2018/04/24 18:16:10	1.1.1.3
@@ -30,9 +30,15 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	@(#)socketvar.h	7.17 (Berkeley) 5/5/91
+ *	from: @(#)socketvar.h	7.17 (Berkeley) 5/5/91
+ *	socketvar.h,v 1.6 1993/06/12 23:35:14 andrew Exp
  */
 
+#ifndef _SYS_SOCKETVAR_H_
+#define _SYS_SOCKETVAR_H_
+
+#include <sys/select.h>			/* for struct selinfo */
+
 /*
  * Kernel structure per socket.
  * Contains send and receive buffer queues,
@@ -77,7 +83,7 @@ struct socket {
 		u_long	sb_mbmax;	/* max chars of mbufs to use */
 		long	sb_lowat;	/* low water mark */
 		struct	mbuf *sb_mb;	/* the mbuf chain */
-		struct	proc *sb_sel;	/* process selecting read/write */
+		struct selinfo sb_sel;	/* process selecting read/write */
 		short	sb_flags;	/* flags, see below */
 		short	sb_timeo;	/* timeout for read/write */
 	} so_rcv, so_snd;
@@ -88,7 +94,7 @@ struct socket {
 #define	SB_SEL		0x08		/* someone is selecting */
 #define	SB_ASYNC	0x10		/* ASYNC I/O, need signals */
 #define	SB_NOTIFY	(SB_WAIT|SB_SEL|SB_ASYNC)
-#define	SB_COLL		0x20		/* collision selecting */
+/* was	SB_COLL		0x20		 * collision selecting */
 #define	SB_NOINTR	0x40		/* operations not interruptible */
 
 	caddr_t	so_tpcb;		/* Wisc. protocol control block XXX */
@@ -197,3 +203,5 @@ int	soo_ioctl __P((struct file *fp, int
 int	soo_select __P((struct file *fp, int which, struct proc *p));
 int 	soo_close __P((struct file *fp, struct proc *p));
 #endif
+
+#endif /* !_SYS_SOCKETVAR_H_ */