2022-05-25 14:02:09 +00:00
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#!/bin/sh
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set -eu
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export LC_ALL=C.UTF-8
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export SOURCE_DATE_EPOCH={{ SOURCE_DATE_EPOCH }}
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2022-06-04 06:42:23 +00:00
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echo "SOURCE_DATE_EPOCH=$SOURCE_DATE_EPOCH"
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2022-05-25 14:02:09 +00:00
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# we create the apt user ourselves or otherwise its uid/gid will differ
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# compared to the one chosen in debootstrap because of different installation
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# order in comparison to the systemd users
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# https://bugs.debian.org/969631
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# we cannot use useradd because passwd is not Essential:yes
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2022-07-26 16:37:35 +00:00
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#
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# with cron 3.0pl1-142 and the introduction of cron-daemon-common, installation
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# order of cron and systemd started to differ between debootstrap and
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# mmdebstrap, resulting in different gid values
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2022-05-25 14:02:09 +00:00
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{{ CMD }} --variant={{ VARIANT }} --mode={{ MODE }} \
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--essential-hook='if [ {{ VARIANT }} = - ]; then echo _apt:*:100:65534::/nonexistent:/usr/sbin/nologin >> "$1"/etc/passwd; fi' \
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2022-07-26 16:37:35 +00:00
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--essential-hook='if [ {{ VARIANT }} = - ] && [ {{ DIST }} = unstable -o {{ DIST }} = testing ]; then printf "systemd-journal:x:101:\nsystemd-network:x:102:\nsystemd-resolve:x:103:\ncrontab:x:104:" >> "$1"/etc/group; fi' \
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2022-07-26 16:30:52 +00:00
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$(case {{ DIST }} in oldstable|stable) : ;; *) echo --hook-dir=./hooks/merged-usr ;; esac) \
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2022-05-25 14:02:09 +00:00
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{{ DIST }} /tmp/debian-{{ DIST }}-mm.tar {{ MIRROR }}
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mkdir /tmp/debian-{{ DIST }}-mm
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tar --xattrs --xattrs-include='*' -C /tmp/debian-{{ DIST }}-mm -xf /tmp/debian-{{ DIST }}-mm.tar
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rm /tmp/debian-{{ DIST }}-mm.tar
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mkdir /tmp/debian-{{ DIST }}-debootstrap
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tar --xattrs --xattrs-include='*' -C /tmp/debian-{{ DIST }}-debootstrap -xf "cache/debian-{{ DIST }}-{{ VARIANT }}.tar"
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# diff cannot compare device nodes, so we use tar to do that for us and then
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# delete the directory
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tar -C /tmp/debian-{{ DIST }}-debootstrap -cf dev1.tar ./dev
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tar -C /tmp/debian-{{ DIST }}-mm -cf dev2.tar ./dev
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ret=0
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cmp dev1.tar dev2.tar || ret=$?
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if [ "$ret" -ne 0 ]; then
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if type diffoscope >/dev/null; then
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diffoscope dev1.tar dev2.tar
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exit 1
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else
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echo "no diffoscope installed" >&2
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fi
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if type base64 >/dev/null; then
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base64 dev1.tar
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base64 dev2.tar
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exit 1
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else
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echo "no base64 installed" >&2
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fi
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if type xxd >/dev/null; then
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xxd dev1.tar
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xxd dev2.tar
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exit 1
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else
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echo "no xxd installed" >&2
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fi
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exit 1
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fi
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rm dev1.tar dev2.tar
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rm -r /tmp/debian-{{ DIST }}-debootstrap/dev /tmp/debian-{{ DIST }}-mm/dev
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# remove downloaded deb packages
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rm /tmp/debian-{{ DIST }}-debootstrap/var/cache/apt/archives/*.deb
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# remove aux-cache
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rm /tmp/debian-{{ DIST }}-debootstrap/var/cache/ldconfig/aux-cache
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# remove logs
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rm /tmp/debian-{{ DIST }}-debootstrap/var/log/dpkg.log \
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/tmp/debian-{{ DIST }}-debootstrap/var/log/bootstrap.log \
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/tmp/debian-{{ DIST }}-debootstrap/var/log/alternatives.log
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# remove *-old files
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rm /tmp/debian-{{ DIST }}-debootstrap/var/cache/debconf/config.dat-old \
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/tmp/debian-{{ DIST }}-mm/var/cache/debconf/config.dat-old
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rm /tmp/debian-{{ DIST }}-debootstrap/var/cache/debconf/templates.dat-old \
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/tmp/debian-{{ DIST }}-mm/var/cache/debconf/templates.dat-old
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rm /tmp/debian-{{ DIST }}-debootstrap/var/lib/dpkg/status-old \
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/tmp/debian-{{ DIST }}-mm/var/lib/dpkg/status-old
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# remove dpkg files
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rm /tmp/debian-{{ DIST }}-debootstrap/var/lib/dpkg/available
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rm /tmp/debian-{{ DIST }}-debootstrap/var/lib/dpkg/cmethopt
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# since we installed packages directly from the .deb files, Priorities differ
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# thus we first check for equality and then remove the files
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chroot /tmp/debian-{{ DIST }}-debootstrap dpkg --list > dpkg1
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chroot /tmp/debian-{{ DIST }}-mm dpkg --list > dpkg2
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diff -u dpkg1 dpkg2
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rm dpkg1 dpkg2
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grep -v '^Priority: ' /tmp/debian-{{ DIST }}-debootstrap/var/lib/dpkg/status > status1
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grep -v '^Priority: ' /tmp/debian-{{ DIST }}-mm/var/lib/dpkg/status > status2
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diff -u status1 status2
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rm status1 status2
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rm /tmp/debian-{{ DIST }}-debootstrap/var/lib/dpkg/status /tmp/debian-{{ DIST }}-mm/var/lib/dpkg/status
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# debootstrap exposes the hosts's kernel version
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if [ -e /tmp/debian-{{ DIST }}-debootstrap/etc/apt/apt.conf.d/01autoremove-kernels ]; then
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rm /tmp/debian-{{ DIST }}-debootstrap/etc/apt/apt.conf.d/01autoremove-kernels
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fi
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if [ -e /tmp/debian-{{ DIST }}-mm/etc/apt/apt.conf.d/01autoremove-kernels ]; then
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rm /tmp/debian-{{ DIST }}-mm/etc/apt/apt.conf.d/01autoremove-kernels
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fi
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# who creates /run/mount?
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if [ -e "/tmp/debian-{{ DIST }}-debootstrap/run/mount/utab" ]; then
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rm "/tmp/debian-{{ DIST }}-debootstrap/run/mount/utab"
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fi
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if [ -e "/tmp/debian-{{ DIST }}-debootstrap/run/mount" ]; then
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rmdir "/tmp/debian-{{ DIST }}-debootstrap/run/mount"
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fi
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# debootstrap doesn't clean apt
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rm /tmp/debian-{{ DIST }}-debootstrap/var/lib/apt/lists/127.0.0.1_debian_dists_{{ DIST }}_main_binary-{{ HOSTARCH }}_Packages \
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/tmp/debian-{{ DIST }}-debootstrap/var/lib/apt/lists/127.0.0.1_debian_dists_{{ DIST }}_Release \
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/tmp/debian-{{ DIST }}-debootstrap/var/lib/apt/lists/127.0.0.1_debian_dists_{{ DIST }}_Release.gpg
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if [ "{{ VARIANT }}" = "-" ]; then
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rm /tmp/debian-{{ DIST }}-debootstrap/etc/machine-id
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rm /tmp/debian-{{ DIST }}-mm/etc/machine-id
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rm /tmp/debian-{{ DIST }}-debootstrap/var/lib/systemd/catalog/database
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rm /tmp/debian-{{ DIST }}-mm/var/lib/systemd/catalog/database
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cap=$(chroot /tmp/debian-{{ DIST }}-debootstrap /sbin/getcap /bin/ping)
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expected="/bin/ping cap_net_raw=ep"
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if [ "{{ DIST }}" = oldstable ]; then
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expected="/bin/ping = cap_net_raw+ep"
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fi
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if [ "$cap" != "$expected" ]; then
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echo "expected bin/ping to have capabilities $expected" >&2
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echo "but debootstrap produced: $cap" >&2
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exit 1
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fi
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cap=$(chroot /tmp/debian-{{ DIST }}-mm /sbin/getcap /bin/ping)
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if [ "$cap" != "$expected" ]; then
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echo "expected bin/ping to have capabilities $expected" >&2
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echo "but mmdebstrap produced: $cap" >&2
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exit 1
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fi
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fi
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rm /tmp/debian-{{ DIST }}-mm/var/cache/apt/archives/lock
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rm /tmp/debian-{{ DIST }}-mm/var/lib/apt/extended_states
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rm /tmp/debian-{{ DIST }}-mm/var/lib/apt/lists/lock
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# the list of shells might be sorted wrongly
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for f in "/tmp/debian-{{ DIST }}-debootstrap/etc/shells" "/tmp/debian-{{ DIST }}-mm/etc/shells"; do
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sort -o "$f" "$f"
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done
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# Because of unreproducible uids (#969631) we created the _apt user ourselves
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# and because passwd is not Essential:yes we didn't use useradd. But newer
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# versions of adduser and shadow will create a different /etc/shadow
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for f in shadow shadow-; do
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if grep -q '^_apt:!:' /tmp/debian-{{ DIST }}-debootstrap/etc/$f; then
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sed -i 's/^_apt:\*:\([^:]\+\):0:99999:7:::$/_apt:!:\1::::::/' /tmp/debian-{{ DIST }}-mm/etc/$f
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fi
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done
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2022-07-26 16:37:35 +00:00
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# same as above but for cron and systemd groups
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for f in gshadow gshadow-; do
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for group in systemd-journal systemd-network systemd-resolve crontab; do
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if grep -q '^'"$group"':!:' /tmp/debian-{{ DIST }}-debootstrap/etc/$f; then
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sed -i 's/^'"$group"':x::/'"$group"':!::/' /tmp/debian-{{ DIST }}-mm/etc/$f
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fi
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done
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done
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2022-05-25 14:02:09 +00:00
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# workaround for https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=917773
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if ! cmp /tmp/debian-{{ DIST }}-debootstrap/etc/shadow /tmp/debian-{{ DIST }}-mm/etc/shadow; then
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echo patching /etc/shadow on {{ DIST }} {{ VARIANT }} >&2
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awk -v FS=: -v OFS=: -v SDE={{ SOURCE_DATE_EPOCH }} '{ print $1,$2,int(SDE/60/60/24),$4,$5,$6,$7,$8,$9 }' < /tmp/debian-{{ DIST }}-mm/etc/shadow > /tmp/debian-{{ DIST }}-mm/etc/shadow.bak
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cat /tmp/debian-{{ DIST }}-mm/etc/shadow.bak > /tmp/debian-{{ DIST }}-mm/etc/shadow
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rm /tmp/debian-{{ DIST }}-mm/etc/shadow.bak
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else
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echo no difference for /etc/shadow on {{ DIST }} {{ VARIANT }} >&2
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fi
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if ! cmp /tmp/debian-{{ DIST }}-debootstrap/etc/shadow- /tmp/debian-{{ DIST }}-mm/etc/shadow-; then
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echo patching /etc/shadow- on {{ DIST }} {{ VARIANT }} >&2
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awk -v FS=: -v OFS=: -v SDE={{ SOURCE_DATE_EPOCH }} '{ print $1,$2,int(SDE/60/60/24),$4,$5,$6,$7,$8,$9 }' < /tmp/debian-{{ DIST }}-mm/etc/shadow- > /tmp/debian-{{ DIST }}-mm/etc/shadow-.bak
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cat /tmp/debian-{{ DIST }}-mm/etc/shadow-.bak > /tmp/debian-{{ DIST }}-mm/etc/shadow-
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rm /tmp/debian-{{ DIST }}-mm/etc/shadow-.bak
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else
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echo no difference for /etc/shadow- on {{ DIST }} {{ VARIANT }} >&2
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fi
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# Because of unreproducible uids (#969631) we created the _apt user ourselves
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# and because passwd is not Essential:yes we didn't use useradd. But passwd
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# since 1:4.11.1+dfsg1-1 will create empty mail files, so we create it too.
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# https://bugs.debian.org/1004710
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if [ {{ VARIANT }} = - ]; then
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if [ -e /tmp/debian-{{ DIST }}-debootstrap/var/mail/_apt ]; then
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touch /tmp/debian-{{ DIST }}-mm/var/mail/_apt
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chmod 660 /tmp/debian-{{ DIST }}-mm/var/mail/_apt
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chown 100:8 /tmp/debian-{{ DIST }}-mm/var/mail/_apt
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fi
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fi
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# check if the file content differs
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diff --unified --no-dereference --recursive /tmp/debian-{{ DIST }}-debootstrap /tmp/debian-{{ DIST }}-mm >&2
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# check permissions, ownership, symlink targets, modification times using tar
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# directory mtimes will differ, thus we equalize them first
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find /tmp/debian-{{ DIST }}-debootstrap /tmp/debian-{{ DIST }}-mm -type d -print0 | xargs -0 touch --date="@{{ SOURCE_DATE_EPOCH }}"
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# debootstrap never ran apt -- fixing permissions
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for d in ./var/lib/apt/lists/partial ./var/cache/apt/archives/partial; do
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chroot /tmp/debian-{{ DIST }}-debootstrap chmod 0700 $d
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chroot /tmp/debian-{{ DIST }}-debootstrap chown _apt:root $d
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done
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tar -C /tmp/debian-{{ DIST }}-debootstrap --numeric-owner --sort=name --clamp-mtime --mtime=$(date --utc --date=@{{ SOURCE_DATE_EPOCH }} --iso-8601=seconds) -cf /tmp/root1.tar .
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tar -C /tmp/debian-{{ DIST }}-mm --numeric-owner --sort=name --clamp-mtime --mtime=$(date --utc --date=@{{ SOURCE_DATE_EPOCH }} --iso-8601=seconds) -cf /tmp/root2.tar .
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tar --full-time --verbose -tf /tmp/root1.tar > /tmp/root1.tar.list
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tar --full-time --verbose -tf /tmp/root2.tar > /tmp/root2.tar.list
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diff -u /tmp/root1.tar.list /tmp/root2.tar.list
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rm /tmp/root1.tar /tmp/root2.tar /tmp/root1.tar.list /tmp/root2.tar.list
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# check if file properties (permissions, ownership, symlink names, modification time) differ
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#
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# we cannot use this (yet) because it cannot cope with paths that have [ or @ in them
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#fmtree -c -p /tmp/debian-{{ DIST }}-debootstrap -k flags,gid,link,mode,size,time,uid | sudo fmtree -p /tmp/debian-{{ DIST }}-mm
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rm -r /tmp/debian-{{ DIST }}-debootstrap /tmp/debian-{{ DIST }}-mm
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