josch/mmdebstrap
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Instead of requiring root, use qemu

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- unprivileged creation of rootfs using guestfish
 - allows full control over network, installed packages
 - merged test.sh into coverage.sh
This commit is contained in:
Johannes 'josch' Schauer 2018-11-04 20:34:40 +01:00
parent bcb6b65b72
commit 935f5b7a66
Signed by: josch
GPG key ID: F2CBA5C78FBD83E1
5 changed files with 565 additions and 445 deletions
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.gitignore vendored Normal file
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@ -0,0 +1 @@
shared

684
coverage.sh
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@ -2,8 +2,20 @@
set -eu set -eu
mirrordir="./shared/debian"
./make_mirror.sh
# we use -f because the file might not exist
rm -f shared/cover_db.img
# prepare image for cover_db
guestfish -N shared/cover_db.img=disk:100M -- mkfs vfat /dev/sda
cp mmdebstrap shared
starttime= starttime=
total=44 total=54
i=1 i=1
print_header() { print_header() {
@ -20,149 +32,308 @@ print_header() {
i=$((i+1)) i=$((i+1))
} }
mkdir -p cover_db
if mountpoint -q -- cover_db; then
sudo umount cover_db
fi
# here is something crazy:
# as we run mmdebstrap, the process ends up being run by different users with
# different privileges (real or fake). But for being able to collect
# Devel::Cover data, they must all share a single directory. The only way that
# I found to make this work is to mount the database directory with a
# filesystem that doesn't support ownership information at all and a umask that
# gives read/write access to everybody.
# https://github.com/pjcj/Devel--Cover/issues/223
fallocate -l 100M cover_db.img
sudo mkfs.vfat cover_db.img
sudo mount -o loop,umask=000 cover_db.img cover_db
nativearch=$(dpkg --print-architecture) nativearch=$(dpkg --print-architecture)
./make_mirror.sh
cd mirror
python3 -m http.server 8000 2>/dev/null & pid=$!
cd -
# wait for the server to start
sleep 1
if ! kill -0 $pid; then
echo "failed to start http server"
exit 1
fi
echo "running http server with pid $pid"
mirror="http://localhost:8000"
# choose the timestamp of the unstable Release file, so that we get # choose the timestamp of the unstable Release file, so that we get
# reproducible results for the same mirror timestamp # reproducible results for the same mirror timestamp
export SOURCE_DATE_EPOCH=$(date --date="$(grep-dctrl -s Date -n '' mirror/dists/unstable/Release)" +%s) SOURCE_DATE_EPOCH=$(date --date="$(grep-dctrl -s Date -n '' "$mirrordir/dists/unstable/Release")" +%s)
CMD="perl -MDevel::Cover=-silent,-nogcov ./mmdebstrap" # for traditional sort order that uses native byte values
export LC_ALL=C
# by default, use the mmdebstrap executable in the current directory together
# with perl Devel::Cover but allow to overwrite this
: "${CMD:=perl -MDevel::Cover=-silent,-nogcov ./mmdebstrap}"
mirror="http://127.0.0.1/debian"
for dist in stable testing unstable; do
for variant in minbase buildd -; do
# skip because of different userids for apt/systemd
if [ "$dist" = 'stable' ] && [ "$variant" = '-' ]; then
continue
fi
print_header "mode=root,variant=$variant: check against debootstrap $dist"
cat << END > shared/test.sh
#!/bin/sh
set -eu
export LC_ALL=C
export SOURCE_DATE_EPOCH=$SOURCE_DATE_EPOCH
$CMD --variant=$variant --mode=root $dist /tmp/debian-$dist-mm.tar $mirror
mkdir /tmp/debian-$dist-mm
tar -C /tmp/debian-$dist-mm -xf /tmp/debian-$dist-mm.tar
mkdir /tmp/debian-$dist-debootstrap
tar -C /tmp/debian-$dist-debootstrap -xf "cache/debian-$dist-$variant.tar"
# diff cannot compare device nodes, so we use tar to do that for us and then
# delete the directory
tar -C /tmp/debian-$dist-debootstrap -cf dev1.tar ./dev
tar -C /tmp/debian-$dist-mm -cf dev2.tar ./dev
cmp dev1.tar dev2.tar
rm dev1.tar dev2.tar
rm -r /tmp/debian-$dist-debootstrap/dev /tmp/debian-$dist-mm/dev
# remove downloaded deb packages
rm /tmp/debian-$dist-debootstrap/var/cache/apt/archives/*.deb
# remove aux-cache
rm /tmp/debian-$dist-debootstrap/var/cache/ldconfig/aux-cache
# remove logs
rm /tmp/debian-$dist-debootstrap/var/log/dpkg.log \
/tmp/debian-$dist-debootstrap/var/log/bootstrap.log \
/tmp/debian-$dist-mm/var/log/apt/eipp.log.xz \
/tmp/debian-$dist-debootstrap/var/log/alternatives.log
# remove *-old files
rm /tmp/debian-$dist-debootstrap/var/cache/debconf/config.dat-old \
/tmp/debian-$dist-mm/var/cache/debconf/config.dat-old
rm /tmp/debian-$dist-debootstrap/var/cache/debconf/templates.dat-old \
/tmp/debian-$dist-mm/var/cache/debconf/templates.dat-old
rm /tmp/debian-$dist-debootstrap/var/lib/dpkg/status-old \
/tmp/debian-$dist-mm/var/lib/dpkg/status-old
# remove dpkg files
rm /tmp/debian-$dist-debootstrap/var/lib/dpkg/available \
/tmp/debian-$dist-debootstrap/var/lib/dpkg/cmethopt
# since we installed packages directly from the .deb files, Priorities differ
# thus we first check for equality and then remove the files
chroot /tmp/debian-$dist-debootstrap dpkg --list > dpkg1
chroot /tmp/debian-$dist-mm dpkg --list > dpkg2
diff -u dpkg1 dpkg2
rm dpkg1 dpkg2
grep -v '^Priority: ' /tmp/debian-$dist-debootstrap/var/lib/dpkg/status > status1
grep -v '^Priority: ' /tmp/debian-$dist-mm/var/lib/dpkg/status > status2
diff -u status1 status2
rm status1 status2
rm /tmp/debian-$dist-debootstrap/var/lib/dpkg/status /tmp/debian-$dist-mm/var/lib/dpkg/status
rmdir /tmp/debian-$dist-mm/var/lib/apt/lists/auxfiles
# debootstrap exposes the hosts's kernel version
rm /tmp/debian-$dist-debootstrap/etc/apt/apt.conf.d/01autoremove-kernels \
/tmp/debian-$dist-mm/etc/apt/apt.conf.d/01autoremove-kernels
# who creates /run/mount?
rm -f /tmp/debian-$dist-debootstrap/run/mount/utab
rmdir /tmp/debian-$dist-debootstrap/run/mount
# debootstrap doesn't clean apt
rm /tmp/debian-$dist-debootstrap/var/lib/apt/lists/127.0.0.1_debian_dists_${dist}_main_binary-amd64_Packages \
/tmp/debian-$dist-debootstrap/var/lib/apt/lists/127.0.0.1_debian_dists_${dist}_Release \
/tmp/debian-$dist-debootstrap/var/lib/apt/lists/127.0.0.1_debian_dists_${dist}_Release.gpg
if [ "$variant" = "-" ]; then
rm /tmp/debian-$dist-debootstrap/etc/machine-id
rm /tmp/debian-$dist-mm/etc/machine-id
rm /tmp/debian-$dist-debootstrap/var/lib/systemd/catalog/database
rm /tmp/debian-$dist-mm/var/lib/systemd/catalog/database
fi
rm /tmp/debian-$dist-debootstrap/var/lib/dpkg/lock
# introduced in dpkg 1.19.1
if [ "$dist" != "stable" ]; then
rm /tmp/debian-$dist-debootstrap/var/lib/dpkg/lock-frontend
fi
# check if the file content differs
diff --no-dereference --brief --recursive /tmp/debian-$dist-debootstrap /tmp/debian-$dist-mm
# check if file properties (permissions, ownership, symlink names, modification time) differ
#
# we cannot use this (yet) because it cannot copy with paths that have [ or @ in them
#fmtree -c -p /tmp/debian-$dist-debootstrap -k flags,gid,link,mode,size,time,uid | sudo fmtree -p /tmp/debian-$dist-mm
END
./run_qemu.sh
done
done
print_header "mode=root,variant=apt: create directory" print_header "mode=root,variant=apt: create directory"
sudo $CMD --mode=root --variant=apt unstable ./debian-unstable $mirror cat << END > shared/test.sh
sudo tar -C ./debian-unstable --one-file-system -c . | tar -t | sort > tar1.txt #!/bin/sh
sudo rm -r --one-file-system ./debian-unstable set -eu
export LC_ALL=C
$CMD --mode=root --variant=apt unstable /tmp/debian-unstable $mirror
tar -C /tmp/debian-unstable --one-file-system -c . | tar -t | sort > tar1.txt
END
./run_qemu.sh
print_header "mode=unshare,variant=apt: test progress bars on fake tty"
cat << END > shared/test.sh
#!/bin/sh
set -eu
export LC_ALL=C
script -qfc "$CMD --mode=root --variant=apt unstable /tmp/unstable-chroot.tar $mirror" /dev/null
tar -tf /tmp/unstable-chroot.tar | sort > tar2.txt
diff -u tar1.txt tar2.txt
END
./run_qemu.sh
print_header "mode=root,variant=apt: existing empty directory" print_header "mode=root,variant=apt: existing empty directory"
mkdir ./debian-unstable cat << END > shared/test.sh
sudo $CMD --mode=root --variant=apt unstable ./debian-unstable $mirror #!/bin/sh
sudo tar -C ./debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt set -eu
export LC_ALL=C
mkdir /tmp/debian-unstable
$CMD --mode=root --variant=apt unstable /tmp/debian-unstable $mirror
tar -C /tmp/debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
sudo rm -r --one-file-system ./debian-unstable END
./run_qemu.sh
print_header "mode=unshare,variant=apt: create tarball" print_header "mode=unshare,variant=apt: create tarball"
$CMD --mode=unshare --variant=apt unstable unstable-chroot.tar $mirror cat << END > shared/test.sh
tar -tf unstable-chroot.tar | sort > tar2.txt #!/bin/sh
set -eu
export LC_ALL=C
adduser --gecos user --disabled-password user
sysctl -w kernel.unprivileged_userns_clone=1
runuser -u user -- $CMD --mode=unshare --variant=apt unstable /tmp/unstable-chroot.tar $mirror
tar -tf /tmp/unstable-chroot.tar | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
rm unstable-chroot.tar END
./run_qemu.sh
print_header "mode=auto,variant=apt: read from stdin, write to stdout" print_header "mode=auto,variant=apt: read from stdin, write to stdout"
echo "deb $mirror unstable main" | $CMD --variant=apt > unstable-chroot.tar cat << END > shared/test.sh
tar -tf unstable-chroot.tar | sort > tar2.txt #!/bin/sh
set -eu
export LC_ALL=C
echo "deb $mirror unstable main" | $CMD --variant=apt > /tmp/unstable-chroot.tar
tar -tf /tmp/unstable-chroot.tar | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
rm unstable-chroot.tar END
./run_qemu.sh
print_header "mode=auto,variant=apt: default mirror" print_header "mode=auto,variant=apt: default mirror"
$CMD --variant=apt unstable unstable-chroot.tar $mirror cat << END > shared/test.sh
tar -tf unstable-chroot.tar | sort > tar2.txt #!/bin/sh
set -eu
export LC_ALL=C
echo "127.0.0.1 deb.debian.org" >> /etc/hosts
$CMD --variant=apt unstable /tmp/unstable-chroot.tar
tar -tf /tmp/unstable-chroot.tar | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
rm unstable-chroot.tar END
./run_qemu.sh
print_header "mode=auto,variant=apt: pass distribution but implicitly write to stdout"
cat << END > shared/test.sh
#!/bin/sh
set -eu
export LC_ALL=C
echo "127.0.0.1 deb.debian.org" >> /etc/hosts
$CMD --variant=apt unstable > /tmp/unstable-chroot.tar
tar -tf /tmp/unstable-chroot.tar | sort > tar2.txt
diff -u tar1.txt tar2.txt
END
./run_qemu.sh
print_header "mode=auto,variant=apt: mirror is -" print_header "mode=auto,variant=apt: mirror is -"
echo "deb $mirror unstable main" | $CMD --variant=apt unstable unstable-chroot.tar - cat << END > shared/test.sh
tar -tf unstable-chroot.tar | sort > tar2.txt #!/bin/sh
set -eu
export LC_ALL=C
echo "deb $mirror unstable main" | $CMD --variant=apt unstable /tmp/unstable-chroot.tar -
tar -tf /tmp/unstable-chroot.tar | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
rm unstable-chroot.tar END
./run_qemu.sh
print_header "mode=auto,variant=apt: mirror is deb..." print_header "mode=auto,variant=apt: mirror is deb..."
$CMD --variant=apt unstable unstable-chroot.tar "deb $mirror unstable main" cat << END > shared/test.sh
tar -tf unstable-chroot.tar | sort > tar2.txt #!/bin/sh
set -eu
export LC_ALL=C
$CMD --variant=apt unstable /tmp/unstable-chroot.tar "deb $mirror unstable main"
tar -tf /tmp/unstable-chroot.tar | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
rm unstable-chroot.tar END
./run_qemu.sh
print_header "mode=auto,variant=apt: mirror is real file" print_header "mode=auto,variant=apt: mirror is real file"
echo "deb $mirror unstable main" > sources.list cat << END > shared/test.sh
$CMD --variant=apt unstable unstable-chroot.tar sources.list #!/bin/sh
rm sources.list set -eu
tar -tf unstable-chroot.tar | sort > tar2.txt export LC_ALL=C
echo "deb $mirror unstable main" > /tmp/sources.list
$CMD --variant=apt unstable /tmp/unstable-chroot.tar /tmp/sources.list
tar -tf /tmp/unstable-chroot.tar | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
rm unstable-chroot.tar END
./run_qemu.sh
print_header "mode=auto,variant=apt: no mirror but data on stdin" print_header "mode=auto,variant=apt: no mirror but data on stdin"
echo "deb $mirror unstable main" | $CMD --variant=apt unstable unstable-chroot.tar cat << END > shared/test.sh
tar -tf unstable-chroot.tar | sort > tar2.txt #!/bin/sh
set -eu
export LC_ALL=C
echo "deb $mirror unstable main" | $CMD --variant=apt unstable /tmp/unstable-chroot.tar
tar -tf /tmp/unstable-chroot.tar | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
rm unstable-chroot.tar END
./run_qemu.sh
print_header "mode=root,variant=apt: add foreign architecture" print_header "mode=root,variant=apt: add foreign architecture"
sudo $CMD --mode=root --variant=apt --architectures=amd64,armhf unstable ./debian-unstable $mirror cat << END > shared/test.sh
{ echo "amd64"; echo "armhf"; } | cmp ./debian-unstable/var/lib/dpkg/arch - #!/bin/sh
sudo rm ./debian-unstable/var/lib/dpkg/arch set -eu
sudo tar -C ./debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt export LC_ALL=C
$CMD --mode=root --variant=apt --architectures=amd64,armhf unstable /tmp/debian-unstable $mirror
{ echo "amd64"; echo "armhf"; } | cmp /tmp/debian-unstable/var/lib/dpkg/arch -
rm /tmp/debian-unstable/var/lib/dpkg/arch
tar -C /tmp/debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
sudo rm -r --one-file-system ./debian-unstable END
./run_qemu.sh
print_header "mode=root,variant=apt: test --aptopt" print_header "mode=root,variant=apt: test --aptopt"
sudo $CMD --mode=root --variant=apt --aptopt="Acquire::Check-Valid-Until false" unstable ./debian-unstable $mirror cat << END > shared/test.sh
echo "Acquire::Check-Valid-Until false;" | cmp ./debian-unstable/etc/apt/apt.conf.d/99mmdebstrap - #!/bin/sh
sudo rm ./debian-unstable/etc/apt/apt.conf.d/99mmdebstrap set -eu
sudo tar -C ./debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt export LC_ALL=C
$CMD --mode=root --variant=apt --aptopt="Acquire::Check-Valid-Until false" unstable /tmp/debian-unstable $mirror
echo "Acquire::Check-Valid-Until false;" | cmp /tmp/debian-unstable/etc/apt/apt.conf.d/99mmdebstrap -
rm /tmp/debian-unstable/etc/apt/apt.conf.d/99mmdebstrap
tar -C /tmp/debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
sudo rm -r --one-file-system ./debian-unstable END
./run_qemu.sh
print_header "mode=root,variant=apt: test --dpkgopt" print_header "mode=root,variant=apt: test --dpkgopt"
sudo $CMD --mode=root --variant=apt --dpkgopt="path-exclude=/usr/share/doc/*" unstable ./debian-unstable $mirror cat << END > shared/test.sh
echo "path-exclude=/usr/share/doc/*" | cmp ./debian-unstable/etc/dpkg/dpkg.cfg.d/99mmdebstrap - #!/bin/sh
sudo rm ./debian-unstable/etc/dpkg/dpkg.cfg.d/99mmdebstrap set -eu
sudo tar -C ./debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt export LC_ALL=C
$CMD --mode=root --variant=apt --dpkgopt="path-exclude=/usr/share/doc/*" unstable /tmp/debian-unstable $mirror
echo "path-exclude=/usr/share/doc/*" | cmp /tmp/debian-unstable/etc/dpkg/dpkg.cfg.d/99mmdebstrap -
rm /tmp/debian-unstable/etc/dpkg/dpkg.cfg.d/99mmdebstrap
tar -C /tmp/debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt
grep -v '^./usr/share/doc/.' tar1.txt | diff -u - tar2.txt grep -v '^./usr/share/doc/.' tar1.txt | diff -u - tar2.txt
sudo rm -r --one-file-system ./debian-unstable END
./run_qemu.sh
print_header "mode=root,variant=apt: test --include" print_header "mode=root,variant=apt: test --include"
sudo $CMD --mode=root --variant=apt --include=doc-debian unstable ./debian-unstable $mirror cat << END > shared/test.sh
sudo rm ./debian-unstable/usr/share/doc-base/debian-* #!/bin/sh
sudo rm -r ./debian-unstable/usr/share/doc/debian set -eu
sudo rm -r ./debian-unstable/usr/share/doc/doc-debian export LC_ALL=C
sudo rm ./debian-unstable/var/log/apt/eipp.log.xz $CMD --mode=root --variant=apt --include=doc-debian unstable /tmp/debian-unstable $mirror
sudo rm ./debian-unstable/var/lib/dpkg/info/doc-debian.list rm /tmp/debian-unstable/usr/share/doc-base/debian-*
sudo rm ./debian-unstable/var/lib/dpkg/info/doc-debian.md5sums rm -r /tmp/debian-unstable/usr/share/doc/debian
sudo tar -C ./debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt rm -r /tmp/debian-unstable/usr/share/doc/doc-debian
rm /tmp/debian-unstable/var/log/apt/eipp.log.xz
rm /tmp/debian-unstable/var/lib/dpkg/info/doc-debian.list
rm /tmp/debian-unstable/var/lib/dpkg/info/doc-debian.md5sums
tar -C /tmp/debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt
diff -u tar1.txt tar2.txt diff -u tar1.txt tar2.txt
sudo rm -r --one-file-system ./debian-unstable END
./run_qemu.sh
# test all variants # test all variants
for variant in essential apt required minbase buildd important debootstrap - standard; do for variant in essential apt required minbase buildd important debootstrap - standard; do
print_header "mode=root,variant=$variant: create directory" print_header "mode=root,variant=$variant: create directory"
sudo $CMD --mode=root --variant=$variant unstable ./debian-unstable $mirror cat << END > shared/test.sh
sudo tar -C ./debian-unstable --one-file-system -c . | tar -t | sort > "$variant.txt" #!/bin/sh
sudo rm -r --one-file-system ./debian-unstable set -eu
export LC_ALL=C
$CMD --mode=root --variant=$variant unstable /tmp/unstable-chroot.tar $mirror
tar -tf /tmp/unstable-chroot.tar | sort > "$variant.txt"
END
./run_qemu.sh
# check if the other modes produce the same result in each variant # check if the other modes produce the same result in each variant
for mode in unshare fakechroot proot; do for mode in unshare fakechroot proot; do
# fontconfig doesn't install reproducibly because differences # fontconfig doesn't install reproducibly because differences
@ -182,23 +353,36 @@ for variant in essential apt required minbase buildd important debootstrap - sta
;; ;;
esac esac
print_header "mode=$mode,variant=$variant: create tarball" print_header "mode=$mode,variant=$variant: create tarball"
$CMD --mode=$mode --variant=$variant unstable unstable-chroot.tar $mirror cat << END > shared/test.sh
# in fakechroot mode, we use a fake ldconfig, so we have to #!/bin/sh
# artificially add some files set -eu
{ tar -tf unstable-chroot.tar; export LC_ALL=C
[ "$mode" = "fakechroot" ] && printf "./etc/ld.so.cache\n./var/cache/ldconfig/\n"; adduser --gecos user --disabled-password user
} | sort | diff -u "./$variant.txt" - [ "$mode" = unshare ] && sysctl -w kernel.unprivileged_userns_clone=1
rm unstable-chroot.tar runuser -u user -- $CMD --mode=$mode --variant=$variant unstable /tmp/unstable-chroot.tar $mirror
# in fakechroot mode, we use a fake ldconfig, so we have to
# artificially add some files
{ tar -tf /tmp/unstable-chroot.tar;
[ "$mode" = "fakechroot" ] && printf "./etc/ld.so.cache\n./var/cache/ldconfig/\n";
} | sort | diff -u "./$variant.txt" -
END
./run_qemu.sh
# Devel::Cover doesn't survive mmdebstrap re-exec-ing itself # Devel::Cover doesn't survive mmdebstrap re-exec-ing itself
# with fakechroot, thus, we do an additional run where we # with fakechroot, thus, we do an additional run where we
# explicitly run mmdebstrap with fakechroot from the start # explicitly run mmdebstrap with fakechroot from the start
if [ "$mode" = "fakechroot" ]; then if [ "$mode" = "fakechroot" ]; then
print_header "mode=$mode,variant=$variant: create tarball (ver 2)" print_header "mode=$mode,variant=$variant: create tarball (ver 2)"
fakechroot fakeroot $CMD --mode=$mode --variant=$variant unstable unstable-chroot.tar $mirror cat << END > shared/test.sh
{ tar -tf unstable-chroot.tar; #!/bin/sh
printf "./etc/ld.so.cache\n./var/cache/ldconfig/\n"; set -eu
} | sort | diff -u "./$variant.txt" - export LC_ALL=C
rm unstable-chroot.tar adduser --gecos user --disabled-password user
runuser -u user -- fakechroot fakeroot $CMD --mode=$mode --variant=$variant unstable /tmp/unstable-chroot.tar $mirror
{ tar -tf /tmp/unstable-chroot.tar;
printf "./etc/ld.so.cache\n./var/cache/ldconfig/\n";
} | sort | diff -u "./$variant.txt" -
END
./run_qemu.sh
fi fi
done done
# some variants are equal and some are strict superset of the last # some variants are equal and some are strict superset of the last
@ -206,197 +390,219 @@ for variant in essential apt required minbase buildd important debootstrap - sta
case "$variant" in case "$variant" in
essential) ;; # nothing to compare it to essential) ;; # nothing to compare it to
apt) apt)
[ $(comm -23 essential.txt apt.txt | wc -l) -eq 0 ] [ $(comm -23 shared/essential.txt shared/apt.txt | wc -l) -eq 0 ]
[ $(comm -13 essential.txt apt.txt | wc -l) -gt 0 ] [ $(comm -13 shared/essential.txt shared/apt.txt | wc -l) -gt 0 ]
rm essential.txt rm shared/essential.txt
;; ;;
required) required)
[ $(comm -23 apt.txt required.txt | wc -l) -eq 0 ] [ $(comm -23 shared/apt.txt shared/required.txt | wc -l) -eq 0 ]
[ $(comm -13 apt.txt required.txt | wc -l) -gt 0 ] [ $(comm -13 shared/apt.txt shared/required.txt | wc -l) -gt 0 ]
rm apt.txt rm shared/apt.txt
;; ;;
minbase) # equal to required minbase) # equal to required
cmp required.txt minbase.txt cmp shared/required.txt shared/minbase.txt
rm required.txt rm shared/required.txt
;; ;;
buildd) buildd)
[ $(comm -23 minbase.txt buildd.txt | wc -l) -eq 0 ] [ $(comm -23 shared/minbase.txt shared/buildd.txt | wc -l) -eq 0 ]
[ $(comm -13 minbase.txt buildd.txt | wc -l) -gt 0 ] [ $(comm -13 shared/minbase.txt shared/buildd.txt | wc -l) -gt 0 ]
rm buildd.txt # we need minbase.txt but not buildd.txt rm shared/buildd.txt # we need minbase.txt but not buildd.txt
;; ;;
important) important)
[ $(comm -23 minbase.txt important.txt | wc -l) -eq 0 ] [ $(comm -23 shared/minbase.txt shared/important.txt | wc -l) -eq 0 ]
[ $(comm -13 minbase.txt important.txt | wc -l) -gt 0 ] [ $(comm -13 shared/minbase.txt shared/important.txt | wc -l) -gt 0 ]
rm minbase.txt rm shared/minbase.txt
;; ;;
debootstrap) # equal to important debootstrap) # equal to important
cmp important.txt debootstrap.txt cmp shared/important.txt shared/debootstrap.txt
rm important.txt rm shared/important.txt
;; ;;
-) # equal to debootstrap -) # equal to debootstrap
cmp debootstrap.txt ./-.txt cmp shared/debootstrap.txt shared/-.txt
rm debootstrap.txt rm shared/debootstrap.txt
;; ;;
standard) standard)
[ $(comm -23 ./-.txt standard.txt | wc -l) -eq 0 ] [ $(comm -23 shared/-.txt shared/standard.txt | wc -l) -eq 0 ]
[ $(comm -13 ./-.txt standard.txt | wc -l) -gt 0 ] [ $(comm -13 shared/-.txt shared/standard.txt | wc -l) -gt 0 ]
rm ./-.txt standard.txt rm shared/-.txt shared/standard.txt
;; ;;
*) exit 1;; *) exit 1;;
esac esac
done done
# test extract variant also with chrootless mode # test extract variant also with chrootless mode
for mode in root unshare fakechroot proot chrootless; do for mode in root unshare fakechroot proot chrootless; do
prefix= prefix=
if [ "$mode" = "root" ]; then if [ "$mode" = "fakechroot" ]; then
prefix=sudo # Devel::Cover doesn't survive mmdebstrap re-exec-ing itself
# with fakechroot, thus, we explicitly run mmdebstrap with
# fakechroot from the start
prefix="runuser -u user -- fakechroot fakeroot"
elif [ "$mode" != "root" ]; then
prefix="runuser -u user --"
fi fi
print_header "mode=$mode,variant=extract: unpack doc-debian" print_header "mode=$mode,variant=extract: unpack doc-debian"
$prefix $CMD --mode=$mode --variant=extract --include=doc-debian unstable ./debian-unstable $mirror cat << END > shared/test.sh
# delete contents of doc-debian #!/bin/sh
sudo rm ./debian-unstable/usr/share/doc-base/debian-* set -eu
sudo rm -r ./debian-unstable/usr/share/doc/debian export LC_ALL=C
sudo rm -r ./debian-unstable/usr/share/doc/doc-debian adduser --gecos user --disabled-password user
# delete real files [ "$mode" = unshare ] && sysctl -w kernel.unprivileged_userns_clone=1
sudo rm ./debian-unstable/etc/apt/sources.list $prefix $CMD --mode=$mode --variant=extract --include=doc-debian unstable /tmp/debian-unstable $mirror
sudo rm ./debian-unstable/etc/fstab # delete contents of doc-debian
sudo rm ./debian-unstable/etc/hostname rm /tmp/debian-unstable/usr/share/doc-base/debian-*
sudo rm ./debian-unstable/etc/resolv.conf rm -r /tmp/debian-unstable/usr/share/doc/debian
sudo rm ./debian-unstable/var/lib/dpkg/status rm -r /tmp/debian-unstable/usr/share/doc/doc-debian
# delete symlinks # delete real files
sudo rm ./debian-unstable/libx32 rm /tmp/debian-unstable/etc/apt/sources.list
sudo rm ./debian-unstable/lib64 rm /tmp/debian-unstable/etc/fstab
sudo rm ./debian-unstable/lib32 rm /tmp/debian-unstable/etc/hostname
sudo rm ./debian-unstable/sbin rm /tmp/debian-unstable/etc/resolv.conf
sudo rm ./debian-unstable/bin rm /tmp/debian-unstable/var/lib/dpkg/status
sudo rm ./debian-unstable/lib # delete symlinks
# delete ./dev (files might exist or not depending on the mode) rm /tmp/debian-unstable/libx32
sudo rm -f ./debian-unstable/dev/console rm /tmp/debian-unstable/lib64
sudo rm -f ./debian-unstable/dev/fd rm /tmp/debian-unstable/lib32
sudo rm -f ./debian-unstable/dev/full rm /tmp/debian-unstable/sbin
sudo rm -f ./debian-unstable/dev/null rm /tmp/debian-unstable/bin
sudo rm -f ./debian-unstable/dev/ptmx rm /tmp/debian-unstable/lib
sudo rm -f ./debian-unstable/dev/random # delete ./dev (files might exist or not depending on the mode)
sudo rm -f ./debian-unstable/dev/stderr rm -f /tmp/debian-unstable/dev/console
sudo rm -f ./debian-unstable/dev/stdin rm -f /tmp/debian-unstable/dev/fd
sudo rm -f ./debian-unstable/dev/stdout rm -f /tmp/debian-unstable/dev/full
sudo rm -f ./debian-unstable/dev/tty rm -f /tmp/debian-unstable/dev/null
sudo rm -f ./debian-unstable/dev/urandom rm -f /tmp/debian-unstable/dev/ptmx
sudo rm -f ./debian-unstable/dev/zero rm -f /tmp/debian-unstable/dev/random
# in chrootless mode, there is more to remove rm -f /tmp/debian-unstable/dev/stderr
if [ "$mode" = "chrootless" ]; then rm -f /tmp/debian-unstable/dev/stdin
sudo rm ./debian-unstable/var/log/apt/eipp.log.xz rm -f /tmp/debian-unstable/dev/stdout
sudo rm ./debian-unstable/var/lib/dpkg/triggers/Lock rm -f /tmp/debian-unstable/dev/tty
sudo rm ./debian-unstable/var/lib/dpkg/triggers/Unincorp rm -f /tmp/debian-unstable/dev/urandom
sudo rm ./debian-unstable/var/lib/dpkg/status-old rm -f /tmp/debian-unstable/dev/zero
sudo rm ./debian-unstable/var/lib/dpkg/info/format # the rest should be empty directories that we can rmdir recursively
sudo rm ./debian-unstable/var/lib/dpkg/info/doc-debian.md5sums find /tmp/debian-unstable -depth -print0 | xargs -0 rmdir
sudo rm ./debian-unstable/var/lib/dpkg/info/doc-debian.list END
fi ./run_qemu.sh
# the rest should be empty directories that we can rmdir recursively
sudo find ./debian-unstable -depth -print0 | xargs -0 sudo rmdir
done done
print_header "mode=chrootless,variant=custom: install doc-debian" print_header "mode=chrootless,variant=custom: install doc-debian"
$CMD --mode=chrootless --variant=custom --include=doc-debian unstable ./debian-unstable $mirror cat << END > shared/test.sh
#!/bin/sh
set -eu
export LC_ALL=C
adduser --gecos user --disabled-password user
runuser -u user -- $CMD --mode=chrootless --variant=custom --include=doc-debian unstable /tmp/debian-unstable $mirror
# delete contents of doc-debian # delete contents of doc-debian
sudo rm ./debian-unstable/usr/share/doc-base/debian-* rm /tmp/debian-unstable/usr/share/doc-base/debian-*
sudo rm -r ./debian-unstable/usr/share/doc/debian rm -r /tmp/debian-unstable/usr/share/doc/debian
sudo rm -r ./debian-unstable/usr/share/doc/doc-debian rm -r /tmp/debian-unstable/usr/share/doc/doc-debian
# delete real files # delete real files
sudo rm ./debian-unstable/etc/apt/sources.list rm /tmp/debian-unstable/etc/apt/sources.list
sudo rm ./debian-unstable/etc/fstab rm /tmp/debian-unstable/etc/fstab
sudo rm ./debian-unstable/etc/hostname rm /tmp/debian-unstable/etc/hostname
sudo rm ./debian-unstable/etc/resolv.conf rm /tmp/debian-unstable/etc/resolv.conf
sudo rm ./debian-unstable/var/lib/dpkg/status rm /tmp/debian-unstable/var/lib/dpkg/status
# delete symlinks # delete symlinks
sudo rm ./debian-unstable/libx32 rm /tmp/debian-unstable/libx32
sudo rm ./debian-unstable/lib64 rm /tmp/debian-unstable/lib64
sudo rm ./debian-unstable/lib32 rm /tmp/debian-unstable/lib32
sudo rm ./debian-unstable/sbin rm /tmp/debian-unstable/sbin
sudo rm ./debian-unstable/bin rm /tmp/debian-unstable/bin
sudo rm ./debian-unstable/lib rm /tmp/debian-unstable/lib
# in chrootless mode, there is more to remove # in chrootless mode, there is more to remove
sudo rm ./debian-unstable/var/log/apt/eipp.log.xz rm /tmp/debian-unstable/var/log/apt/eipp.log.xz
sudo rm ./debian-unstable/var/lib/dpkg/triggers/Lock rm /tmp/debian-unstable/var/lib/dpkg/triggers/Lock
sudo rm ./debian-unstable/var/lib/dpkg/triggers/Unincorp rm /tmp/debian-unstable/var/lib/dpkg/triggers/Unincorp
sudo rm ./debian-unstable/var/lib/dpkg/status-old rm /tmp/debian-unstable/var/lib/dpkg/status-old
sudo rm ./debian-unstable/var/lib/dpkg/info/format rm /tmp/debian-unstable/var/lib/dpkg/info/format
sudo rm ./debian-unstable/var/lib/dpkg/info/doc-debian.md5sums rm /tmp/debian-unstable/var/lib/dpkg/info/doc-debian.md5sums
sudo rm ./debian-unstable/var/lib/dpkg/info/doc-debian.list rm /tmp/debian-unstable/var/lib/dpkg/info/doc-debian.list
# the rest should be empty directories that we can rmdir recursively # the rest should be empty directories that we can rmdir recursively
sudo find ./debian-unstable -depth -print0 | xargs -0 sudo rmdir find /tmp/debian-unstable -depth -print0 | xargs -0 rmdir
END
./run_qemu.sh
# test foreign architecture with all modes # test foreign architecture with all modes
# create directory in sudo mode # create directory in sudo mode
# FIXME: once fakechroot and proot are fixed, we have to test more variants # FIXME: once fakechroot and proot are fixed, we have to test more variants
# than just essential # than just essential
print_header "mode=root,variant=essential: create directory" print_header "mode=root,variant=essential: create directory"
sudo $CMD --mode=root --variant=essential unstable ./debian-unstable $mirror cat << END > shared/test.sh
sudo tar -C ./debian-unstable --one-file-system -c . | tar -t | sort > tar1.txt #!/bin/sh
sudo rm -r --one-file-system ./debian-unstable set -eu
export LC_ALL=C
$CMD --mode=root --variant=essential unstable /tmp/unstable-chroot.tar $mirror
tar -tf /tmp/unstable-chroot.tar | sort > tar1.txt
END
./run_qemu.sh
# FIXME: once fakechroot and proot are fixed, we can switch to variant=apt # FIXME: once fakechroot and proot are fixed, we can switch to variant=apt
# FIXME: cannot test fakechroot or proot because of # FIXME: cannot test fakechroot or proot because of
# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=909637 # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=909637
for mode in root unshare fakechroot proot; do for mode in root unshare fakechroot proot; do
prefix= prefix=
if [ "$mode" = "root" ]; then if [ "$mode" = "fakechroot" ]; then
prefix=sudo
elif [ "$mode" = "fakechroot" ]; then
# Devel::Cover doesn't survive mmdebstrap re-exec-ing itself # Devel::Cover doesn't survive mmdebstrap re-exec-ing itself
# with fakechroot, thus, we explicitly run mmdebstrap with # with fakechroot, thus, we explicitly run mmdebstrap with
# fakechroot from the start # fakechroot from the start
prefix="fakechroot fakeroot" prefix="runuser -u user -- fakechroot fakeroot"
elif [ "$mode" != "root" ]; then
prefix="runuser -u user --"
fi fi
print_header "mode=$mode,variant=essential: create armhf tarball" print_header "mode=$mode,variant=essential: create armhf tarball"
$prefix $CMD --mode=$mode --variant=essential --architectures=armhf unstable ./debian-unstable.tar $mirror cat << END > shared/test.sh
# we ignore differences between architectures by ignoring some files #!/bin/sh
# and renaming others set -eu
# in fakechroot mode, we use a fake ldconfig, so we have to export LC_ALL=C
# artificially add some files adduser --gecos user --disabled-password user
# in proot mode, some extra files are put there by proot [ "$mode" = unshare ] && sysctl -w kernel.unprivileged_userns_clone=1
{ tar -tf ./debian-unstable.tar \ $prefix $CMD --mode=$mode --variant=essential --architectures=armhf unstable /tmp/unstable-chroot.tar $mirror
| grep -v '^./usr/lib/ld-linux-armhf.so.3$' \ # we ignore differences between architectures by ignoring some files
| grep -v '^./usr/lib/arm-linux-gnueabihf/ld-linux.so.3$' \ # and renaming others
| grep -v '^./usr/lib/arm-linux-gnueabihf/ld-linux-armhf.so.3$' \ # in fakechroot mode, we use a fake ldconfig, so we have to
| sed 's/arm-linux-gnueabihf/x86_64-linux-gnu/' \ # artificially add some files
| sed 's/armhf/amd64/'; # in proot mode, some extra files are put there by proot
[ "$mode" = "fakechroot" ] && printf "./etc/ld.so.cache\n./var/cache/ldconfig/\n"; { tar -tf /tmp/unstable-chroot.tar \
} | sort > tar2.txt | grep -v '^./usr/lib/ld-linux-armhf.so.3$' \
{ cat tar1.txt \ | grep -v '^./usr/lib/arm-linux-gnueabihf/ld-linux.so.3$' \
| grep -v '^./usr/bin/i386$' \ | grep -v '^./usr/lib/arm-linux-gnueabihf/ld-linux-armhf.so.3$' \
| grep -v '^./usr/bin/x86_64$' \ | sed 's/arm-linux-gnueabihf/x86_64-linux-gnu/' \
| grep -v '^./usr/lib64/ld-linux-x86-64.so.2$' \ | sed 's/armhf/amd64/';
| grep -v '^./usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2$' \ [ "$mode" = "fakechroot" ] && printf "./etc/ld.so.cache\n./var/cache/ldconfig/\n";
| grep -v '^./usr/lib/x86_64-linux-gnu/libmvec-2.27.so$' \ } | sort > tar2.txt
| grep -v '^./usr/lib/x86_64-linux-gnu/libmvec.so.1$' \ { cat tar1.txt \
| grep -v '^./usr/share/man/man8/i386.8.gz$' \ | grep -v '^./usr/bin/i386$' \
| grep -v '^./usr/share/man/man8/x86_64.8.gz$'; | grep -v '^./usr/bin/x86_64$' \
[ "$mode" = "proot" ] && printf "./etc/ld.so.preload\n./host-rootfs/\n"; | grep -v '^./usr/lib64/ld-linux-x86-64.so.2$' \
} | sort | diff -u - tar2.txt | grep -v '^./usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2$' \
sudo rm ./debian-unstable.tar | grep -v '^./usr/lib/x86_64-linux-gnu/libmvec-2.27.so$' \
| grep -v '^./usr/lib/x86_64-linux-gnu/libmvec.so.1$' \
| grep -v '^./usr/share/man/man8/i386.8.gz$' \
| grep -v '^./usr/share/man/man8/x86_64.8.gz$';
[ "$mode" = "proot" ] && printf "./etc/ld.so.preload\n";
} | sort | diff -u - tar2.txt
END
./run_qemu.sh
done done
# test if auto mode picks the right mode # test if auto mode picks the right mode
kill $pid # test installation of foreign architecture packages
wait $pid || true # test tty output
cover -nogcov -report html_basic guestfish add-ro shared/cover_db.img : run : mount /dev/sda / : tar-out / - \
| tar -C shared/cover_db --extract
cover -nogcov -report html_basic shared/cover_db
mkdir -p report mkdir -p report
for f in common.js coverage.html cover.css css.js mmdebstrap--branch.html mmdebstrap--condition.html mmdebstrap.html mmdebstrap--subroutine.html standardista-table-sorting.js; do for f in common.js coverage.html cover.css css.js mmdebstrap--branch.html mmdebstrap--condition.html mmdebstrap.html mmdebstrap--subroutine.html standardista-table-sorting.js; do
cp -a cover_db/$f report cp -a shared/cover_db/$f report
done done
cover -delete shared/cover_db
echo echo
echo open file://$(pwd)/report/coverage.html in a browser echo open file://$(pwd)/report/coverage.html in a browser
echo echo
sudo umount cover_db rm shared/tar1.txt shared/tar2.txt
sudo rmdir cover_db
rm tar1.txt tar2.txt
rm cover_db.img

104
make_mirror.sh
View file

@ -2,8 +2,8 @@
set -eu set -eu
mirrordir="./mirror" mirrordir="./shared/debian"
cachedir="./cache" cachedir="./shared/cache"
mirror="http://deb.debian.org/debian" mirror="http://deb.debian.org/debian"
arch1=$(dpkg --print-architecture) arch1=$(dpkg --print-architecture)
@ -22,11 +22,13 @@ if [ -e "$mirrordir/dists/unstable/Release" ]; then
esac esac
fi fi
# use -f because the files might not exist
for dist in stable testing unstable; do for dist in stable testing unstable; do
for variant in minbase buildd -; do for variant in minbase buildd -; do
rm -f "$cachedir/debian-$dist-$variant.tar" rm -f "$cachedir/debian-$dist-$variant.tar"
done done
done done
rm -f "$cachedir/debian-unstable.qcow"
for nativearch in $arch1 $arch2; do for nativearch in $arch1 $arch2; do
for dist in stable testing unstable; do for dist in stable testing unstable; do
@ -149,3 +151,101 @@ END
rm -r "$rootdir" rm -r "$rootdir"
done done
done done
# now fill the cache with new content
mkdir -p "$cachedir"
# We must not use any --dpkgopt here because any dpkg options still
# leak into the chroot with chrootless mode.
# We do not use our own package cache here because
# - it doesn't (and shouldn't) contain the extra packages
# - it doesn't matter if the base system is from a different mirror timestamp
./mmdebstrap --variant=apt --architectures=amd64,armhf --mode=unshare \
--include=linux-image-amd64,systemd-sysv,perl,arch-test,fakechroot,fakeroot,mount,uidmap,proot,qemu-user-static,binfmt-support,qemu-user,dpkg-dev,mini-httpd,libdevel-cover-perl,debootstrap,libfakechroot:armhf,libfakeroot:armhf \
unstable debian-unstable.tar
cat << END > extlinux.conf
default linux
timeout 0
label linux
kernel /vmlinuz
append initrd=/initrd.img root=/dev/sda1 rw console=ttyS0,115200
serial 0 115200
END
cat << END > mmdebstrap.service
[Unit]
Description=mmdebstrap worker script
[Service]
Type=oneshot
ExecStart=/worker.sh
[Install]
WantedBy=multi-user.target
END
# here is something crazy:
# as we run mmdebstrap, the process ends up being run by different users with
# different privileges (real or fake). But for being able to collect
# Devel::Cover data, they must all share a single directory. The only way that
# I found to make this work is to mount the database directory with a
# filesystem that doesn't support ownership information at all and a umask that
# gives read/write access to everybody.
# https://github.com/pjcj/Devel--Cover/issues/223
cat << 'END' > worker.sh
#!/bin/sh
mount -t 9p -o trans=virtio,access=any mmdebstrap /mnt
(
cd /mnt;
mkdir -p cover_db
mount -o loop,umask=000 cover_db.img cover_db
sh ./test.sh
ret=$?
df -h cover_db
umount cover_db
echo $ret
) > /mnt/result.txt 2>&1
umount /mnt
systemctl poweroff
END
chmod +x worker.sh
cat << 'END' > mini-httpd
START=1
DAEMON_OPTS="-h 127.0.0.1 -p 80 -u nobody -dd /mnt -i /var/run/mini-httpd.pid -T UTF-8"
END
cat << 'END' > hosts
127.0.0.1 localhost
END
guestfish -N debian-unstable.img=disk:2G -- \
part-disk /dev/sda mbr : \
part-set-bootable /dev/sda 1 true : \
mkfs ext2 /dev/sda1 : \
mount /dev/sda1 / : \
tar-in debian-unstable.tar / : \
extlinux / : \
copy-in extlinux.conf / : \
mkdir-p /etc/systemd/system/multi-user.target.wants : \
ln-s ../mmdebstrap.service /etc/systemd/system/multi-user.target.wants/mmdebstrap.service : \
copy-in mmdebstrap.service /etc/systemd/system/ : \
copy-in worker.sh / : \
copy-in mini-httpd /etc/default : \
copy-in hosts /etc/ :
rm extlinux.conf worker.sh mini-httpd hosts debian-unstable.tar mmdebstrap.service
qemu-img convert -O qcow2 debian-unstable.img "$cachedir/debian-unstable.qcow"
rm debian-unstable.img
mirror="http://127.0.0.1/debian"
SOURCE_DATE_EPOCH=$(date --date="$(grep-dctrl -s Date -n '' "$mirrordir/dists/unstable/Release")" +%s)
for dist in stable testing unstable; do
for variant in minbase buildd -; do
echo running debootstrap --merged-usr --variant=$variant $dist ./debian-$dist-debootstrap "http://localhost:8000/"
cat << END > shared/test.sh
#!/bin/sh
set -eu
export LC_ALL=C
debootstrap --merged-usr --variant=$variant $dist /tmp/debian-$dist-debootstrap $mirror
tar --sort=name --mtime=@$SOURCE_DATE_EPOCH --clamp-mtime --numeric-owner --one-file-system -C /tmp/debian-$dist-debootstrap -c . > "cache/debian-$dist-$variant.tar"
END
./run_qemu.sh
done
done

17
run_qemu.sh Executable file
View file

@ -0,0 +1,17 @@
#!/bin/sh
cachedir="./shared/cache"
qemu-img create -f qcow2 -b "$cachedir/debian-unstable.qcow" debian-unstable-overlay.qcow
qemu-system-x86_64 -enable-kvm -m 512M -nographic \
-monitor unix:/tmp/monitor,server,nowait \
-serial unix:/tmp/ttyS0,server,nowait \
-serial unix:/tmp/ttyS1,server,nowait \
-virtfs local,id=mmdebstrap,path="$(pwd)/shared",security_model=none,mount_tag=mmdebstrap \
-drive file=debian-unstable-overlay.qcow,cache=unsafe,index=0
head --lines=-1 shared/result.txt
if [ "$(tail --lines=1 shared/result.txt)" -ne 0 ]; then
echo "test.sh failed"
exit 1
fi
rm debian-unstable-overlay.qcow shared/result.txt

204
test.sh
View file

@ -1,204 +0,0 @@
#!/bin/sh
set -eu
mirrordir="./mirror"
cachedir="./cache"
# by default, use the mmdebstrap executable in the current directory but allow
# overwriting the location
: "${mmdebstrap:=./mmdebstrap}"
# by default a cache of debootstrap results is maintained
: "${docache:=true}"
mirror="http://deb.debian.org/debian"
rootdir=$(mktemp --directory)
nativearch=$(dpkg --print-architecture)
components=main
abort=no
for dist in stable testing unstable; do
if [ -e debian-$dist-mm ]; then
echo "debian-$dist-mm exists"
abort=yes
fi
if [ -e debian-$dist-debootstrap ]; then
echo "debian-$dist-debootstrap exists"
abort=yes
fi
done
if [ $abort = yes ]; then
exit 1
fi
./make_mirror.sh
cd mirror
python3 -m http.server 8000 2>/dev/null & pid=$!
cd -
# wait for the server to start
sleep 1
if ! kill -0 $pid; then
echo "failed to start http server"
exit 1
fi
trap 'kill $pid' INT QUIT TERM EXIT
echo "running http server with pid $pid"
# choose the timestamp of the unstable Release file, so that we get
# reproducible results for the same mirror timestamp
export SOURCE_DATE_EPOCH=$(date --date="$(grep-dctrl -s Date -n '' mirror/dists/unstable/Release)" +%s)
mkdir -p "$cachedir"
for dist in stable testing unstable; do
> timings
> sizes
for variant in minbase buildd -; do
# skip because of different userids for apt/systemd
if [ "$dist" = 'stable' ] && [ "$variant" = '-' ]; then
continue
fi
echo =========================================================
echo $dist $variant
echo =========================================================
echo running $mmdebstrap --variant=$variant --mode=unshare $dist debian-$dist-mm.tar "http://localhost:8000"
/usr/bin/time --output=timings --append --format=%e $mmdebstrap --variant=$variant --mode=unshare $dist debian-$dist-mm.tar "http://localhost:8000"
stat --format=%s debian-$dist-mm.tar >> sizes
mkdir ./debian-$dist-mm
sudo tar -C ./debian-$dist-mm -xf ./debian-$dist-mm.tar
if [ "$docache" != "true" ] || [ ! -e "$cachedir/debian-$dist-$variant.tar" ]; then
echo running debootstrap --merged-usr --variant=$variant $dist ./debian-$dist-debootstrap "http://localhost:8000/"
/usr/bin/time --output=timings --append --format=%e sudo debootstrap --merged-usr --variant=$variant $dist ./debian-$dist-debootstrap "http://localhost:8000/"
sudo tar --sort=name --mtime=@$SOURCE_DATE_EPOCH --clamp-mtime --numeric-owner --one-file-system -C ./debian-$dist-debootstrap -c . > "$cachedir/debian-$dist-$variant.tar"
sudo rm -r ./debian-$dist-debootstrap
else
echo cached >> timings
fi
stat --format=%s "$cachedir/debian-$dist-$variant.tar" >> sizes
mkdir ./debian-$dist-debootstrap
sudo tar -C ./debian-$dist-debootstrap -xf "$cachedir/debian-$dist-$variant.tar"
# diff cannot compare device nodes, so we use tar to do that for us and then
# delete the directory
tar -C ./debian-$dist-debootstrap -cf dev1.tar ./dev
tar -C ./debian-$dist-mm -cf dev2.tar ./dev
cmp dev1.tar dev2.tar
rm dev1.tar dev2.tar
sudo rm -r ./debian-$dist-debootstrap/dev ./debian-$dist-mm/dev
# remove downloaded deb packages
sudo rm debian-$dist-debootstrap/var/cache/apt/archives/*.deb
# remove aux-cache
sudo rm debian-$dist-debootstrap/var/cache/ldconfig/aux-cache
# remove logs
sudo rm debian-$dist-debootstrap/var/log/dpkg.log \
debian-$dist-debootstrap/var/log/bootstrap.log \
debian-$dist-mm/var/log/apt/eipp.log.xz \
debian-$dist-debootstrap/var/log/alternatives.log
# remove *-old files
sudo rm debian-$dist-debootstrap/var/cache/debconf/config.dat-old \
debian-$dist-mm/var/cache/debconf/config.dat-old
sudo rm debian-$dist-debootstrap/var/cache/debconf/templates.dat-old \
debian-$dist-mm/var/cache/debconf/templates.dat-old
sudo rm debian-$dist-debootstrap/var/lib/dpkg/status-old \
debian-$dist-mm/var/lib/dpkg/status-old
# remove dpkg files
sudo rm debian-$dist-debootstrap/var/lib/dpkg/available \
debian-$dist-debootstrap/var/lib/dpkg/cmethopt
# since we installed packages directly from the .deb files, Priorities differ
# thus we first check for equality and then remove the files
sudo chroot debian-$dist-debootstrap dpkg --list > dpkg1
sudo chroot debian-$dist-mm dpkg --list > dpkg2
diff -u dpkg1 dpkg2
rm dpkg1 dpkg2
grep -v '^Priority: ' debian-$dist-debootstrap/var/lib/dpkg/status > status1
grep -v '^Priority: ' debian-$dist-mm/var/lib/dpkg/status > status2
diff -u status1 status2
rm status1 status2
sudo rm debian-$dist-debootstrap/var/lib/dpkg/status debian-$dist-mm/var/lib/dpkg/status
sudo rmdir debian-$dist-mm/var/lib/apt/lists/auxfiles
# debootstrap exposes the hosts's kernel version
sudo rm debian-$dist-debootstrap/etc/apt/apt.conf.d/01autoremove-kernels \
debian-$dist-mm/etc/apt/apt.conf.d/01autoremove-kernels
# who creates /run/mount?
sudo rm -f debian-$dist-debootstrap/run/mount/utab
sudo rmdir debian-$dist-debootstrap/run/mount
# debootstrap doesn't clean apt
sudo rm debian-$dist-debootstrap/var/lib/apt/lists/localhost:8000_dists_${dist}_main_binary-amd64_Packages \
debian-$dist-debootstrap/var/lib/apt/lists/localhost:8000_dists_${dist}_Release \
debian-$dist-debootstrap/var/lib/apt/lists/localhost:8000_dists_${dist}_Release.gpg
if [ "$variant" = "-" ]; then
sudo rm debian-$dist-debootstrap/etc/machine-id
sudo rm debian-$dist-mm/etc/machine-id
sudo rm debian-$dist-debootstrap/var/lib/systemd/catalog/database
sudo rm debian-$dist-mm/var/lib/systemd/catalog/database
fi
sudo rm debian-$dist-debootstrap/var/lib/dpkg/lock
# introduced in dpkg 1.19.1
if [ "$dist" != "stable" ]; then
sudo rm debian-$dist-debootstrap/var/lib/dpkg/lock-frontend
fi
# check if the file content differs
sudo diff --no-dereference --brief --recursive debian-$dist-debootstrap debian-$dist-mm
# check if file properties (permissions, ownership, symlink names, modification time) differ
#
# we cannot use this (yet) because it cannot copy with paths that have [ or @ in them
#sudo fmtree -c -p ./debian-$dist-debootstrap -k flags,gid,link,mode,size,time,uid | sudo fmtree -p ./debian-$dist-mm
sudo rm -rf ./debian-$dist-debootstrap ./debian-$dist-mm \
./debian-$dist-mm.tar
if [ "$docache" != "true" ]; then
rm "$cachedir/debian-$dist-$variant.tar"
fi
done
eval $(awk '{print "var"NR"="$1}' timings)
echo
echo "timings"
echo "======="
echo
echo "variant | mmdebstrap | debootstrap"
echo "--------+------------+------------"
echo "minbase | $var1 | $var2"
echo "buildd | $var3 | $var4"
if [ "$dist" != 'stable' ]; then
echo "- | $var5 | $var6"
fi
eval $(awk '{print "var"NR"="$1}' sizes)
echo
echo "sizes"
echo "======="
echo
echo "variant | mmdebstrap | debootstrap"
echo "--------+------------+------------"
echo "minbase | $var1 | $var2"
echo "buildd | $var3 | $var4"
if [ "$dist" != 'stable' ]; then
echo "- | $var5 | $var6"
fi
rm timings sizes
done
kill $pid
wait $pid || true
trap - INT QUIT TERM EXIT