Allow for an optional MD upgrade preparation routine.

distrib/miniroot/upgrade.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
-#	$NetBSD: upgrade.sh,v 1.19 1999/11/02 06:11:25 sjg Exp $
+#	$NetBSD: upgrade.sh,v 1.20 2000/11/17 17:36:39 pk Exp $
 #
 # Copyright (c) 1996 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -58,6 +58,11 @@ MODE="upgrade"
 #	md_welcome_banner()	- display friendly message
 #	md_not_going_to_install() - display friendly message
 #	md_congrats()		- display friendly message
+#	md_set_term		- set terminal type
+#	md_makerootwritable	- what it says
+# optional:
+#	md_upgrade_prep_needed	- variable: set if you md_prepare_upgrade()
+#	md_prepare_upgrade	- any machine dependent preparations
 
 # we need to make sure .'s below work if this directory is not in $PATH
 # dirname may not be available but expr is
@@ -282,6 +287,26 @@ check_fs /tmp/fstab.shadow
 # Mount filesystems.
 mount_fs /tmp/fstab.shadow
 
+# Machine dependent preparation.
+test "$md_upgrade_prep_needed" && {
+	md_prepare_upgrade || {
+		cat << 'EOF'
+The preparations for upgrading your machine did not complete successfully.
+
+EOF
+		echo -n "Continue anyway? [n]"
+		getresp "n"
+		case "$resp" in
+			y*|Y*)
+				;;
+			*)
+				exit 1
+				;;
+		esac
+	}
+}
+
+
 echo -n	"Are the upgrade sets on one of your normally mounted (local) filesystems? [y] "
 getresp "y"
 case "$resp" in