From 196c5d1654cd62a1f28b31f2e1f43541cd77737a Mon Sep 17 00:00:00 2001
From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 28 Apr 2024 14:00:01 +0100
Subject: [PATCH] prologue.m4: Fix exit statuses.

Exit 1 if installation failed but restoration of the previous state
succeeded; exit 2 if things are now buggered.
---
 prologue.m4 | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/prologue.m4 b/prologue.m4
index 9f5d084..a90e305 100644
--- a/prologue.m4
+++ b/prologue.m4
@@ -35,17 +35,17 @@ revert () {
     if iptables-restore </var/run/firewall.save &&
        ip6tables-restore </var/run/firewall6.save; then
       echo "Previous firewall state restored."
-      return
+      exit 1
     else
       echo "Failed!  Falling back to plan B."
     fi
   fi
   if ! "$1" revert; then
     echo >&2 "Safe firewall failed.  You're screwed.  Good luck."
-    exit 1
+    exit 2
   fi
   echo >&2 "Phew!  Fallback to safe version successful."
-  exit 1
+  exit 2
 }
 
 finished () {
@@ -116,7 +116,7 @@ case "$#,${1-update}" in
     if ! (try "$firewall_script" "$0"); then
       echo "FAILED."
       cat "$0.errors" >&2
-      exit
+      exit 1
     fi
     echo "done."
     echo "Can you hear me?"
-- 
2.11.0