--- ray/src/hd/rholo4.c	2016/08/18 00:52:48	3.37
+++ ray/src/hd/rholo4.c	2020/02/28 05:18:49	3.39
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: rholo4.c,v 3.37 2016/08/18 00:52:48 greg Exp $";
+static const char	RCSid[] = "$Id: rholo4.c,v 3.39 2020/02/28 05:18:49 greg Exp $";
 #endif
 /*
  * Holodeck display process communication
@@ -23,14 +23,14 @@ static const char	RCSid[] = "$Id: rholo4.c,v 3.37 2016
 #endif
 
 static int	inp_flags;
-static SUBPROC	dpd;
+static SUBPROC	dpd = SP_INACTIVE;
 static FILE	*dpout;
 
 static void disp_flush(void);
 static void disp_result(int type, int nbytes, char *p);
 
 
-extern void
+void
 disp_open(		/* open the named display driver */
 	char	*dname
 )
@@ -41,7 +41,7 @@ disp_open(		/* open the named display driver */
 	if (!strcmp(dname, SLAVENAME)) {
 		dpd.r = 0;		/* read from stdin */
 		dpout = stdout;		/* write to stdout */
-		dpd.running = 0; /* we're the slave procees */
+		dpd.flags = 0;		/* we're the slave procees */
 	} else {
 					/* get full display program name */
 #ifdef DEVPATH
@@ -98,16 +98,16 @@ disp_open(		/* open the named display driver */
 }
 
 
-extern void
+void
 disp_packet(			/* display a packet */
-	register PACKHEAD	*p
+	PACKHEAD	*p
 )
 {
 	disp_result(DS_BUNDLE, packsiz(p->nr), (char *)p);
 }
 
 
-extern int
+int
 disp_check(		/* check display process */
 	int	block
 )
@@ -251,7 +251,7 @@ readerr:
 }
 
 
-extern int
+int
 disp_close(void)			/* close our display process */
 {
 	if (dpout == NULL)
@@ -260,7 +260,7 @@ disp_close(void)			/* close our display process */
 	disp_result(DS_SHUTDOWN, 0, NULL);
 	fclose(dpout);
 	dpout = NULL;
-	return(dpd.running ? close_process(&dpd) : 0);
+	return(dpd.flags&PF_RUNNING ? close_process(&dpd) : 0);
 
 }