From 822f8eafec6c740e7fa567ff20d1ae826190bc26 Mon Sep 17 00:00:00 2001
From: Johannes Schauer Marin Rodrigues <josch@mister-muffin.de>
Date: Thu, 27 Oct 2022 14:22:53 +0200
Subject: [PATCH] tests: test chrootless essential and systemd-sysv with
 fakeroot and foreign

---
 coverage.txt               | 19 ++++++++++++++--
 tests/chrootless           | 16 +++++++++++++
 tests/chrootless-essential | 13 -----------
 tests/chrootless-fakeroot  | 29 ++++++++++++++++++++++++
 tests/chrootless-foreign   | 46 ++++++++++++++++++++++++++++++++++++++
 5 files changed, 108 insertions(+), 15 deletions(-)
 create mode 100644 tests/chrootless
 delete mode 100644 tests/chrootless-essential
 create mode 100644 tests/chrootless-fakeroot
 create mode 100644 tests/chrootless-foreign

diff --git a/coverage.txt b/coverage.txt
index 1093e13..33ddd18 100644
--- a/coverage.txt
+++ b/coverage.txt
@@ -288,12 +288,27 @@ Test: install-doc-debian
 Modes: chrootless
 Variants: custom
 
-Test: chrootless-essential
-Variants: custom
+Test: chrootless
+Variants: essential
 Modes: chrootless
 Skip-If:
  dist in ["oldstable", "stable"]
 
+Test: chrootless-fakeroot
+Variants: essential
+Modes: chrootless
+Skip-If:
+ dist in ["oldstable", "stable"]
+
+Test: chrootless-foreign
+Variants: essential
+Modes: chrootless
+Skip-If:
+ dist in ["oldstable", "stable"]
+ hostarch != "amd64"
+ not run_ma_same_tests
+Needs-QEMU: true
+
 Test: install-doc-debian-and-output-tarball
 Variants: custom
 Modes: chrootless
diff --git a/tests/chrootless b/tests/chrootless
new file mode 100644
index 0000000..cead669
--- /dev/null
+++ b/tests/chrootless
@@ -0,0 +1,16 @@
+#!/bin/sh
+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
+# we need --hook-dir=./hooks/merged-usr because usrmerge does not understand
+# DPKG_ROOT
+for INCLUDE in '' 'systemd-sysv'; do
+	for MODE in root chrootless; do
+		{{ CMD }} --mode=$MODE --variant={{ VARIANT }} --hook-dir=./hooks/merged-usr \
+			${INCLUDE:+--include="$INCLUDE"} \
+			{{ DIST }} "/tmp/$MODE.tar" {{ MIRROR }}
+	done
+	cmp /tmp/root.tar /tmp/chrootless.tar
+	rm /tmp/chrootless.tar /tmp/root.tar
+done
diff --git a/tests/chrootless-essential b/tests/chrootless-essential
deleted file mode 100644
index bfb110b..0000000
--- a/tests/chrootless-essential
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/sh
-set -eu
-export LC_ALL=C.UTF-8
-if [ "$(id -u)" -eq 0 ] && ! id -u user > /dev/null 2>&1; then
-	if [ ! -e /mmdebstrap-testenv ]; then
-		echo "this test modifies the system and should only be run inside a container" >&2
-		exit 1
-	fi
-	adduser --gecos user --disabled-password user
-fi
-prefix=
-[ "$(id -u)" -eq 0 ] && prefix="runuser -u user --"
-$prefix fakechroot fakeroot {{ CMD }} --mode=chrootless --variant=essential {{ DIST }} /dev/null {{ MIRROR }}
diff --git a/tests/chrootless-fakeroot b/tests/chrootless-fakeroot
new file mode 100644
index 0000000..9d83df9
--- /dev/null
+++ b/tests/chrootless-fakeroot
@@ -0,0 +1,29 @@
+#!/bin/sh
+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
+if [ "$(id -u)" -eq 0 ] && ! id -u user > /dev/null 2>&1; then
+	if [ ! -e /mmdebstrap-testenv ]; then
+		echo "this test modifies the system and should only be run inside a container" >&2
+		exit 1
+	fi
+	adduser --gecos user --disabled-password user
+fi
+prefix=
+[ "$(id -u)" -eq 0 ] && prefix="runuser -u user --"
+# we need --hook-dir=./hooks/merged-usr because usrmerge does not understand
+# DPKG_ROOT
+# permissions drwxr-sr-x and extended attributes of ./var/log/journal/ cannot
+# be preserved under fakeroot
+for INCLUDE in '' 'systemd-sysv'; do
+	{{ CMD }} --variant={{ VARIANT }} --hook-dir=./hooks/merged-usr \
+		--customize-hook='if [ -d "$1"/var/log/journal ]; then rmdir "$1"/var/log/journal; mkdir --mode=2755 "$1"/var/log/journal; chroot "$1" chown root:systemd-journal /var/log/journal; fi' \
+		${INCLUDE:+--include="$INCLUDE"} \
+		{{ DIST }} /tmp/root.tar {{ MIRROR }}
+	$prefix fakeroot {{ CMD }} --mode=chrootless --variant={{ VARIANT }} --hook-dir=./hooks/merged-usr \
+		${INCLUDE:+--include="$INCLUDE"} \
+		{{ DIST }} /tmp/chrootless.tar {{ MIRROR }}
+	cmp /tmp/root.tar /tmp/chrootless.tar
+	rm /tmp/chrootless.tar /tmp/root.tar
+done
diff --git a/tests/chrootless-foreign b/tests/chrootless-foreign
new file mode 100644
index 0000000..1b04f51
--- /dev/null
+++ b/tests/chrootless-foreign
@@ -0,0 +1,46 @@
+#!/bin/sh
+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
+if [ ! -e /mmdebstrap-testenv ]; then
+	echo "this test modifies the system and should only be run inside a container" >&2
+	exit 1
+fi
+
+[ "$(id -u)" -eq 0 ]
+[ -e /proc/sys/fs/binfmt_misc/qemu-aarch64 ]
+
+# we need --hook-dir=./hooks/merged-usr because usrmerge does not understand
+# DPKG_ROOT
+for INCLUDE in '' 'systemd-sysv'; do
+	echo 1 > /proc/sys/fs/binfmt_misc/qemu-aarch64
+	arch-test arm64
+	{{ CMD }} --mode=root --architecture=arm64 --variant={{ VARIANT }} \
+		--hook-dir=./hooks/merged-usr ${INCLUDE:+--include="$INCLUDE"} \
+		{{ DIST }} "/tmp/root.tar" {{ MIRROR }}
+	echo 0 > /proc/sys/fs/binfmt_misc/qemu-aarch64
+	! arch-test arm64
+	{{ CMD }} --mode=chrootless --architecture=arm64 --variant={{ VARIANT }} \
+		--hook-dir=./hooks/merged-usr ${INCLUDE:+--include="$INCLUDE"} \
+		{{ DIST }} "/tmp/chrootless.tar" {{ MIRROR }}
+	# when creating a foreign architecture chroot, the tarballs are not
+	# bit-by-bit identical but contain a few remaining differences:
+	#
+	#  * /etc/ld.so.cache -- hard problem, must be solved in glibc upstream
+	#  * /var/lib/dpkg/triggers -- #990712
+	#  * /var/cache/debconf/*.dat-old -- needs investigation
+	for tar in root chrootless; do
+		<"/tmp/$tar.tar" \
+		./tarfilter \
+			--path-exclude=/var/cache/debconf/config.dat-old \
+			--path-exclude=/var/cache/debconf/templates.dat-old \
+			--path-exclude=/etc/ld.so.cache \
+			--path-exclude=/var/lib/dpkg/triggers/File \
+			--path-exclude=/var/lib/dpkg/triggers/ldconfig \
+			> "/tmp/$tar.tar.tmp"
+		mv "/tmp/$tar.tar.tmp" "/tmp/$tar.tar"
+	done
+	cmp /tmp/root.tar /tmp/chrootless.tar
+	rm /tmp/chrootless.tar /tmp/root.tar
+done