From: Dietmar Maurer <dietmar@proxmox.com>
Date: Fri, 28 Nov 2014 07:56:21 +0000 (+0100)
Subject: add preinst script
X-Git-Url: https://git.proxmox.com/?p=pve-firewall.git;a=commitdiff_plain;h=161796ceb966e761d74225ea88f5d8083f203944;hp=1b918ee5a40b1eefbe9e2e6a389037990c1e3cc9

add preinst script

We need to clear ipset from older installation, because sets cannot be
swapped if there type does not match.
---

diff --git a/debian/preinst b/debian/preinst
new file mode 100644
index 0000000..a84c63c
--- /dev/null
+++ b/debian/preinst
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+set -e
+
+case "$1" in
+    install|upgrade)
+	old_version=$2
+	if [ -e '/usr/sbin/pve-firewall' ]; then
+	    if dpkg --compare-versions "$old_version" le '1.0-11' ; then
+		echo "Detected old pve-firewall version - stopping to clear old iptables rules"
+		/usr/sbin/pve-firewall stop
+	    fi
+	fi
+    ;;
+
+    abort-upgrade)
+    ;;
+
+    *)
+        echo "preinst called with unknown argument \`$1'" >&2
+        exit 1
+    ;;
+esac
+
+#DEBHELPER#
+
+exit 0
\ No newline at end of file