diff -ru /usr/src/sbin/dump/main.c dump/main.c
--- /usr/src/sbin/dump/main.c	Sun Nov 16 09:01:58 2003
+++ dump/main.c	Wed Feb  4 09:20:48 2004
@@ -85,6 +85,7 @@
 long	dev_bsize = 1;	/* recalculated below */
 long	blocksperfile;	/* output blocks per file */
 char	*host = NULL;	/* remote host (if any) */
+char	*script = NULL;	/* name of the script for changing tapes */
 
 /*
  * Possible superblock locations ordered from most to least likely.
@@ -127,7 +128,7 @@
 
 	obsolete(&argc, &argv);
 	while ((ch = getopt(argc, argv,
-	    "0123456789aB:b:C:cD:d:f:h:LnSs:T:uWw")) != -1)
+	    "0123456789aB:b:C:cD:d:f:F:h:LnSs:T:uWw")) != -1)
 		switch (ch) {
 		/* dump level */
 		case '0': case '1': case '2': case '3': case '4':
@@ -171,6 +172,10 @@
 			tape = optarg;
 			break;
 
+		case 'F':		/* changer script */
+			script = optarg;
+			break;
+
 		case 'h':
 			honorlevel = numarg("honor level", 0L, 10L);
 			break;
@@ -559,8 +564,8 @@
 {
 	fprintf(stderr,
 		"usage: dump [-0123456789acLnSu] [-B records] [-b blocksize] [-C cachesize]\n"
-		"            [-D dumpdates] [-d density] [-f file] [-h level] [-s feet]\n"
-		"            [-T date] filesystem\n"
+		"            [-D dumpdates] [-d density] [-f file] [-F script] [-h level]\n"
+		"            [-s feet] [-T date] filesystem\n"
 		"       dump -W | -w\n");
 	exit(X_STARTUP);
 }
diff -ru /usr/src/sbin/dump/tape.c dump/tape.c
--- /usr/src/sbin/dump/tape.c	Wed Sep 25 06:06:35 2002
+++ dump/tape.c	Wed Feb  4 09:16:54 2004
@@ -70,6 +70,7 @@
 extern	int ntrec;		/* blocking factor on tape */
 extern	int cartridge;
 extern	char *host;
+extern  char *script;
 char	*nexttape;
 
 static	int atomic(ssize_t (*)(), int, char *, int);
@@ -118,6 +119,41 @@
 static jmp_buf jmpbuf;	/* where to jump to if we are ready when the */
 			/* SIGUSR2 arrives from the previous slave */
 
+
+int
+runscript(void)
+{
+	char *cmd;
+	size_t cmd_len;
+	int rc;
+
+	if (script != NULL) {
+		cmd_len = strlen(script) + strlen(disk) + 10;
+		if ((cmd = (char*) malloc(sizeof(char)*cmd_len)) == NULL) {
+			perror("  DUMP: could not allocate memory for command buffer.");
+			return(1);
+		}
+
+		snprintf(cmd, cmd_len, "%s %s %d", script, disk, tapeno);
+		rc = system(cmd);
+
+		if (rc == -1) {
+			perror("  DUMP: execution of script failed");
+			return(1);
+		} else if (rc == (127 << 8)) {
+			msg("Change Volumes: execution of shell failed while running changer script");
+			return(1);
+		} else {
+			msg("Change Volumes: changer script failed with return code %d\n", (rc >> 8));
+			return(1);
+		}
+
+		return(0);
+	}
+
+	return(1);
+}
+
 int
 alloctape(void)
 {
@@ -368,15 +404,17 @@
 	if (nexttape)
 		return;
 	(void)time((time_t *)&(tstart_changevol));
-	if (!nogripe) {
-		msg("Change Volumes: Mount volume #%d\n", tapeno+1);
-		broadcast("CHANGE DUMP VOLUMES!\a\a\n");
-	}
-	while (!query("Is the new volume mounted and ready to go?"))
-		if (query("Do you want to abort?")) {
-			dumpabort(0);
-			/*NOTREACHED*/
+	if (runscript()) {
+		if (!nogripe) {
+			msg("Change Volumes: Mount volume #%d\n", tapeno+1);
+			broadcast("CHANGE DUMP VOLUMES!\a\a\n");
 		}
+		while (!query("Is the new volume mounted and ready to go?"))
+			if (query("Do you want to abort?")) {
+				dumpabort(0);
+				/*NOTREACHED*/
+			}
+	}
 	(void)time((time_t *)&(tend_changevol));
 	if ((tstart_changevol != (time_t)-1) && (tend_changevol != (time_t)-1))
 		tstart_writing += (tend_changevol - tstart_changevol);