From dc5bbb717374b33bc2c3dc4b9aabe5ee4bcc663b Mon Sep 17 00:00:00 2001
From: Johannes Schauer Marin Rodrigues <josch@mister-muffin.de>
Date: Sat, 11 Jan 2025 09:04:07 +0100
Subject: [PATCH] tests/chrootless: make sure that nothing outside the chroot
 changes

---
 tests/chrootless | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/chrootless b/tests/chrootless
index 7a9d082..6dbb715 100644
--- a/tests/chrootless
+++ b/tests/chrootless
@@ -3,6 +3,7 @@ set -eu
 export LC_ALL=C.UTF-8
 export SOURCE_DATE_EPOCH={{ SOURCE_DATE_EPOCH }}
 trap "rm -f /tmp/chrootless.tar /tmp/root.tar" EXIT INT TERM
+before=$(tar --one-file-system --anchored --exclude="./var/log/journal/*" --exclude=./var/log/wtmp -C / -c ./usr ./bin ./etc ./lib ./sbin ./var | md5sum)
 for INCLUDE in '' 'apt' 'apt,build-essential' 'systemd-sysv'; do
   for MODE in root chrootless; do
     {{ CMD }} --mode=$MODE --variant={{ VARIANT }} \
@@ -12,3 +13,8 @@ for INCLUDE in '' 'apt' 'apt,build-essential' 'systemd-sysv'; do
   cmp /tmp/root.tar /tmp/chrootless.tar || diffoscope /tmp/root.tar /tmp/chrootless.tar
   rm /tmp/chrootless.tar /tmp/root.tar
 done
+after=$(tar --one-file-system --anchored --exclude="./var/log/journal/*" --exclude=./var/log/wtmp -C / -c ./usr ./bin ./etc ./lib ./sbin ./var | md5sum)
+if [ "$before" != "$after" ]; then
+  echo "found changes outside the chroot" >&2
+  exit 1
+fi