forked from josch/mmdebstrap
89 lines
4.2 KiB
Bash
89 lines
4.2 KiB
Bash
#!/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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if [ ! -e /mmdebstrap-testenv ]; then
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echo "this test modifies the system and should only be run inside a container" >&2
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exit 1
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fi
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sysctl -w kernel.unprivileged_userns_clone=1
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adduser --gecos user --disabled-password user
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runuser -u user -- {{ CMD }} --variant=custom --mode=unshare --setup-hook='env container=lxc debootstrap unstable "$1" {{ MIRROR }}' - /tmp/debian-mm.tar {{ MIRROR }}
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mkdir /tmp/debian-mm
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tar --xattrs --xattrs-include='*' -C /tmp/debian-mm -xf /tmp/debian-mm.tar
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mkdir /tmp/debian-debootstrap
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tar --xattrs --xattrs-include='*' -C /tmp/debian-debootstrap -xf "cache/debian-unstable--.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-debootstrap -cf dev1.tar ./dev
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tar -C /tmp/debian-mm -cf dev2.tar ./dev
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cmp dev1.tar dev2.tar >&2
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rm dev1.tar dev2.tar
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rm -r /tmp/debian-debootstrap/dev /tmp/debian-mm/dev
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# remove downloaded deb packages
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rm /tmp/debian-debootstrap/var/cache/apt/archives/*.deb
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# remove aux-cache
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rm /tmp/debian-debootstrap/var/cache/ldconfig/aux-cache
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# remove logs
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rm /tmp/debian-debootstrap/var/log/dpkg.log \
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/tmp/debian-debootstrap/var/log/bootstrap.log \
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/tmp/debian-debootstrap/var/log/alternatives.log \
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/tmp/debian-mm/var/log/bootstrap.log
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# clear out /run except for /run/lock
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find /tmp/debian-debootstrap/run/ -mindepth 1 -maxdepth 1 ! -name lock -print0 | xargs --no-run-if-empty -0 rm -r
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# debootstrap doesn't clean apt
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rm /tmp/debian-debootstrap/var/lib/apt/lists/127.0.0.1_debian_dists_unstable_main_binary-{{ HOSTARCH }}_Packages \
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/tmp/debian-debootstrap/var/lib/apt/lists/127.0.0.1_debian_dists_unstable_Release \
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/tmp/debian-debootstrap/var/lib/apt/lists/127.0.0.1_debian_dists_unstable_Release.gpg
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rm /tmp/debian-debootstrap/etc/machine-id /tmp/debian-mm/etc/machine-id
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rm /tmp/debian-mm/var/cache/apt/archives/lock
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rm /tmp/debian-mm/var/lib/apt/lists/lock
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rm /tmp/debian-mm/var/lib/dpkg/arch
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# workaround for https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=917773
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# also needed for users that are created by systemd-sysusers before systemd 252
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# https://github.com/systemd/systemd/pull/24534
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for f in shadow shadow-; do
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if ! cmp /tmp/debian-debootstrap/etc/$f /tmp/debian-mm/etc/$f >&2; then
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echo patching /etc/$f >&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,$9 }' < /tmp/debian-mm/etc/$f > /tmp/debian-mm/etc/$f.bak
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cat /tmp/debian-mm/etc/$f.bak > /tmp/debian-mm/etc/$f
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rm /tmp/debian-mm/etc/$f.bak
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else
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echo no difference for /etc/$f >&2
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fi
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done
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# check if the file content differs
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diff --no-dereference --recursive /tmp/debian-debootstrap /tmp/debian-mm >&2
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# check permissions, ownership, symlink targets, modification times using tar
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# mtimes of directories created by mmdebstrap will differ, thus we equalize them first
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for d in etc/apt/preferences.d/ etc/apt/sources.list.d/ etc/dpkg/dpkg.cfg.d/ var/log/apt/; do
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touch --date="@{{ SOURCE_DATE_EPOCH }}" /tmp/debian-debootstrap/$d /tmp/debian-mm/$d
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done
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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-debootstrap chmod 0700 $d
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chroot /tmp/debian-debootstrap chown _apt:root $d
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done
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tar -C /tmp/debian-debootstrap --numeric-owner --xattrs --xattrs-include='*' --sort=name --clamp-mtime --mtime=$(date --utc --date=@{{ SOURCE_DATE_EPOCH }} --iso-8601=seconds) -cf /tmp/root1.tar .
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tar -C /tmp/debian-mm --numeric-owner --xattrs --xattrs-include='*' --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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# despite SOURCE_DATE_EPOCH and --clamp-mtime, the timestamps in the tarball
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# will slightly differ from each other in the sub-second precision (last
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# decimals) so the tarballs will not be identical, so we use diff to compare
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# content and tar to compare attributes
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diff -u /tmp/root1.tar.list /tmp/root2.tar.list >&2
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rm /tmp/root1.tar /tmp/root2.tar /tmp/root1.tar.list /tmp/root2.tar.list
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rm /tmp/debian-mm.tar
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rm -r /tmp/debian-debootstrap /tmp/debian-mm
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