--- ray/src/hd/rholo4.c	1997/11/10 18:07:15	3.5
+++ ray/src/hd/rholo4.c	1997/12/01 16:35:35	3.10
@@ -18,7 +18,6 @@ static char SCCSid[] = "$SunId$ SGI";
 
 static int	inp_flags;
 static int	dpd[3];
-static int	pipesiz;
 static FILE	*dpout;
 
 
@@ -34,8 +33,8 @@ char	*dname;
 	sprintf(dpath, "dev/%s%s", dname, HDSUF);
 #endif
 	com[0] = dpath; com[1] = froot; com[2] = NULL;
-	pipesiz = open_process(dpd, com);
-	if (pipesiz <= 0)
+	i = open_process(dpd, com);
+	if (i <= 0)
 		error(USER, "cannot start display process");
 	if ((dpout = fdopen(dup(dpd[1]), "w")) == NULL)
 		error(SYSTEM, "cannot associate FILE with display pipe");
@@ -61,7 +60,7 @@ int	block;
 	int	n;
 	char	*buf = NULL;
 
-	if (pipesiz <= 0)
+	if (dpout == NULL)
 		return(-1);
 					/* flush display output */
 	disp_flush();
@@ -74,8 +73,10 @@ int	block;
 					/* read message header */
 	n = read(dpd[0], (char *)&msg, sizeof(MSGHEAD));
 	if (n != sizeof(MSGHEAD)) {
-		if (n >= 0)
+		if (n >= 0) {
+			dpout = NULL;
 			error(USER, "display process died");
+		}
 		if (errno != EAGAIN & errno != EINTR)
 			goto readerr;
 		return(2);		/* acceptable failure */
@@ -109,6 +110,14 @@ int	block;
 		disp_result(DS_STARTIMM, 0, NULL);
 		bundle_set(BS_ADD, (PACKHEAD *)buf, msg.nbytes/sizeof(PACKHEAD));
 		disp_result(DS_ENDIMM, 0, NULL);
+		disp_check(0);		/* hack -- delete usu. follows add */
+		break;
+	case DR_ADJSET:
+		if (msg.nbytes % sizeof(PACKHEAD))
+			error(INTERNAL, "bad DR_ADJSET from display process");
+		disp_result(DS_STARTIMM, 0, NULL);
+		bundle_set(BS_ADJ, (PACKHEAD *)buf, msg.nbytes/sizeof(PACKHEAD));
+		disp_result(DS_ENDIMM, 0, NULL);
 		disp_flush();
 		break;
 	case DR_DELSET:
@@ -126,6 +135,8 @@ int	block;
 		if (msg.nbytes)
 			error(INTERNAL, "bad DR_SHUTDOWN from display process");
 		return(0);		/* zero return signals shutdown */
+	case DR_NOOP:
+		break;
 	default:
 		error(INTERNAL, "unrecognized request from display process");
 	}
@@ -144,12 +155,11 @@ disp_close()			/* close our display process */
 {
 	int	rval;
 
-	if (pipesiz <= 0)
+	if (dpout == NULL)
 		return(-1);
 	disp_result(DS_SHUTDOWN, 0, NULL);
 	fclose(dpout);
 	dpout = NULL;
-	pipesiz = 0;
 	return(close_process(dpd));
 }
 
@@ -160,6 +170,8 @@ char	*p;
 {
 	MSGHEAD	msg;
 
+	if (dpout == NULL)
+		return;
 	msg.type = type;
 	msg.nbytes = nbytes;
 	fwrite((char *)&msg, sizeof(MSGHEAD), 1, dpout);