432 lines
16 KiB
Bash
Executable file
432 lines
16 KiB
Bash
Executable file
#!/bin/sh
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set -eu
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# This script fills either cache.A or cache.B with new content and then
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# atomically switches the cache symlink from one to the other at the end.
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# This way, at no point will the cache be in an non-working state, even
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# when this script got canceled at any point.
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# Working with two directories also automatically prunes old packages in
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# the local repository.
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if [ -e "./shared/cache.A" ] && [ -e "./shared/cache.B" ]; then
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echo "both ./shared/cache.A and ./shared/cache.B exist" >&2
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echo "was a former run of the script aborted?" >&2
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echo "cache symlink points to $(readlink ./shared/cache)" >&2
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exit 1
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fi
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if [ -e "./shared/cache.A" ]; then
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oldcache=cache.A
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newcache=cache.B
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else
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oldcache=cache.B
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newcache=cache.A
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fi
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oldcachedir="./shared/$oldcache"
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newcachedir="./shared/$newcache"
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oldmirrordir="$oldcachedir/debian"
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newmirrordir="$newcachedir/debian"
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mirror="http://deb.debian.org/debian"
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security_mirror="http://security.debian.org/debian-security"
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arch1=$(dpkg --print-architecture)
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arch2=armhf
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if [ "$arch1" = "$arch2" ]; then
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arch2=amd64
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fi
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components=main
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: "${DEFAULT_DIST:=unstable}"
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: "${HAVE_QEMU:=yes}"
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if [ -e "$oldmirrordir/dists/$DEFAULT_DIST/Release" ]; then
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http_code=$(curl --output /dev/null --silent --location --head --time-cond "$oldmirrordir/dists/$DEFAULT_DIST/Release" --write-out '%{http_code}' "$mirror/dists/$DEFAULT_DIST/Release")
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case "$http_code" in
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200) ;; # need update
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304) echo up-to-date; exit 0;;
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*) echo "unexpected status: $http_code"; exit 1;;
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esac
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fi
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get_oldaptnames() {
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if [ ! -e "$1/$2" ]; then
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return
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fi
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gzip -dc "$1/$2" \
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| grep-dctrl --no-field-names --show-field=Package,Version,Architecture,Filename '' \
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| paste -sd " \n" \
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| while read name ver arch fname; do
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if [ ! -e "$1/$fname" ]; then
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continue
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fi
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# apt stores deb files with the colon encoded as %3a while
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# mirrors do not contain the epoch at all #645895
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case "$ver" in *:*) ver="${ver%%:*}%3a${ver#*:}";; esac
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aptname="$rootdir/var/cache/apt/archives/${name}_${ver}_${arch}.deb"
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# we have to cp and not mv because other
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# distributions might still need this file
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# we have to cp and not symlink because apt
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# doesn't recognize symlinks
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cp --link "$1/$fname" "$aptname"
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echo "$aptname"
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done
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}
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get_newaptnames() {
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if [ ! -e "$1/$2" ]; then
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return
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fi
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gzip -dc "$1/$2" \
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| grep-dctrl --no-field-names --show-field=Package,Version,Architecture,Filename,MD5sum '' \
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| paste -sd " \n" \
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| while read name ver arch fname md5; do
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dir="${fname%/*}"
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# apt stores deb files with the colon encoded as %3a while
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# mirrors do not contain the epoch at all #645895
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case "$ver" in *:*) ver="${ver%%:*}%3a${ver#*:}";; esac
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aptname="$rootdir/var/cache/apt/archives/${name}_${ver}_${arch}.deb"
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if [ -e "$aptname" ]; then
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# make sure that we found the right file by checking its hash
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echo "$md5 $aptname" | md5sum --check >&2
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mkdir -p "$1/$dir"
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# since we move hardlinks around, the same hardlink might've been
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# moved already into the same place by another distribution.
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# mv(1) refuses to copy A to B if both are hardlinks of each other.
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if [ "$aptname" -ef "$1/$fname" ]; then
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# both files are already the same so we just need to
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# delete the source
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rm "$aptname"
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else
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mv "$aptname" "$1/$fname"
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fi
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echo "$aptname"
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fi
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done
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}
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update_cache() {
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dist="$1"
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nativearch="$2"
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# use a subdirectory of $newcachedir so that we can use
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# hardlinks
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rootdir="$newcachedir/apt"
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mkdir -p "$rootdir"
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for p in /etc/apt/apt.conf.d /etc/apt/sources.list.d /etc/apt/preferences.d /var/cache/apt/archives /var/lib/apt/lists/partial /var/lib/dpkg; do
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mkdir -p "$rootdir/$p"
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done
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# read sources.list content from stdin
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cat > "$rootdir/etc/apt/sources.list"
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cat << END > "$rootdir/etc/apt/apt.conf"
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Apt::Architecture "$nativearch";
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Apt::Architectures "$nativearch";
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Dir::Etc "$rootdir/etc/apt";
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Dir::State "$rootdir/var/lib/apt";
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Dir::Cache "$rootdir/var/cache/apt";
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Apt::Install-Recommends false;
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Apt::Get::Download-Only true;
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Acquire::Languages "none";
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Dir::Etc::Trusted "/etc/apt/trusted.gpg";
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Dir::Etc::TrustedParts "/etc/apt/trusted.gpg.d";
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END
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> "$rootdir/var/lib/dpkg/status"
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APT_CONFIG="$rootdir/etc/apt/apt.conf" apt-get update
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# before downloading packages and before replacing the old Packages
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# file, copy all old *.deb packages from the mirror to
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# /var/cache/apt/archives so that apt will not re-download *.deb
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# packages that we already have
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{
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get_oldaptnames "$oldmirrordir" "dists/$dist/main/binary-$nativearch/Packages.gz"
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if grep --quiet security.debian.org "$rootdir/etc/apt/sources.list"; then
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get_oldaptnames "$oldmirrordir" "dists/stable-updates/main/binary-$nativearch/Packages.gz"
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get_oldaptnames "$oldcachedir/debian-security" "dists/stable/updates/main/binary-$nativearch/Packages.gz"
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fi
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} | sort -u > "$rootdir/oldaptnames"
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pkgs=$(APT_CONFIG="$rootdir/etc/apt/apt.conf" apt-get indextargets \
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--format '$(FILENAME)' 'Created-By: Packages' "Architecture: $nativearch" \
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| xargs --delimiter='\n' /usr/lib/apt/apt-helper cat-file \
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| grep-dctrl --no-field-names --show-field=Package --exact-match \
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\( --field=Essential yes --or --field=Priority required \
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--or --field=Priority important --or --field=Priority standard \
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--or --field=Package build-essential \) )
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pkgs="$(echo $pkgs) build-essential"
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APT_CONFIG="$rootdir/etc/apt/apt.conf" apt-get --yes install $pkgs
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# to be able to also test gpg verification, we need to create a mirror
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mkdir -p "$newmirrordir/dists/$dist/main/binary-$nativearch/"
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curl --location "$mirror/dists/$dist/Release" > "$newmirrordir/dists/$dist/Release"
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curl --location "$mirror/dists/$dist/Release.gpg" > "$newmirrordir/dists/$dist/Release.gpg"
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curl --location "$mirror/dists/$dist/main/binary-$nativearch/Packages.gz" > "$newmirrordir/dists/$dist/main/binary-$nativearch/Packages.gz"
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if grep --quiet security.debian.org "$rootdir/etc/apt/sources.list"; then
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mkdir -p "$newmirrordir/dists/stable-updates/main/binary-$nativearch/"
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curl --location "$mirror/dists/stable-updates/Release" > "$newmirrordir/dists/stable-updates/Release"
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curl --location "$mirror/dists/stable-updates/Release.gpg" > "$newmirrordir/dists/stable-updates/Release.gpg"
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curl --location "$mirror/dists/stable-updates/main/binary-$nativearch/Packages.gz" > "$newmirrordir/dists/stable-updates/main/binary-$nativearch/Packages.gz"
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mkdir -p "$newcachedir/debian-security/dists/stable/updates/main/binary-$nativearch/"
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curl --location "$security_mirror/dists/stable/updates/Release" > "$newcachedir/debian-security/dists/stable/updates/Release"
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curl --location "$security_mirror/dists/stable/updates/Release.gpg" > "$newcachedir/debian-security/dists/stable/updates/Release.gpg"
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curl --location "$security_mirror/dists/stable/updates/main/binary-$nativearch/Packages.gz" > "$newcachedir/debian-security/dists/stable/updates/main/binary-$nativearch/Packages.gz"
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fi
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# the deb files downloaded by apt must be moved to their right locations in the
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# pool directory
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#
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# Instead of parsing the Packages file, we could also attempt to move the deb
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# files ourselves to the appropriate pool directories. But that approach
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# requires re-creating the heuristic by which the directory is chosen, requires
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# stripping the epoch from the filename and will break once mirrors change.
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# This way, it doesn't matter where the mirror ends up storing the package.
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{
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get_newaptnames "$newmirrordir" "dists/$dist/main/binary-$nativearch/Packages.gz";
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if grep --quiet security.debian.org "$rootdir/etc/apt/sources.list"; then
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get_newaptnames "$newmirrordir" "dists/stable-updates/main/binary-$nativearch/Packages.gz"
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get_newaptnames "$newcachedir/debian-security" "dists/stable/updates/main/binary-$nativearch/Packages.gz"
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fi
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} | sort -u > "$rootdir/newaptnames"
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rm "$rootdir/var/cache/apt/archives/lock"
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rmdir "$rootdir/var/cache/apt/archives/partial"
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# remove all packages that were in the old Packages file but not in the
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# new one anymore
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comm -23 "$rootdir/oldaptnames" "$rootdir/newaptnames" | xargs --delimiter="\n" --no-run-if-empty rm
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# now the apt cache should be empty
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if [ ! -z "$(ls -1qA "$rootdir/var/cache/apt/archives/")" ]; then
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echo "$rootdir/var/cache/apt/archives not empty:"
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ls -la "$rootdir/var/cache/apt/archives/"
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exit 1
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fi
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# cleanup
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APT_CONFIG="$rootdir/etc/apt/apt.conf" apt-get --option Dir::Etc::SourceList=/dev/null update
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APT_CONFIG="$rootdir/etc/apt/apt.conf" apt-get clean
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rm "$rootdir/var/cache/apt/archives/lock"
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rm "$rootdir/var/lib/apt/lists/lock"
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rm "$rootdir/var/lib/dpkg/status"
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rm "$rootdir/var/lib/dpkg/lock-frontend"
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rm "$rootdir/var/lib/dpkg/lock"
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rm "$rootdir/etc/apt/apt.conf"
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rm "$rootdir/etc/apt/sources.list"
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rm "$rootdir/oldaptnames"
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rm "$rootdir/newaptnames"
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find "$rootdir" -depth -print0 | xargs -0 rmdir
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}
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for nativearch in "$arch1" "$arch2"; do
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for dist in stable testing unstable; do
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cat << END | update_cache "$dist" "$nativearch"
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deb [arch=$nativearch] $mirror $dist $components
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END
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if [ "$dist" = "stable" ]; then
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cat << END | update_cache "$dist" "$nativearch"
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deb [arch=$nativearch] $mirror $dist $components
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deb [arch=$nativearch] $mirror stable-updates main
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deb [arch=$nativearch] $security_mirror stable/updates main
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END
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fi
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done
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done
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if [ "$HAVE_QEMU" = "yes" ]; then
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# We must not use any --dpkgopt here because any dpkg options still
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# leak into the chroot with chrootless mode.
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# We do not use our own package cache here because
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# - it doesn't (and shouldn't) contain the extra packages
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# - it doesn't matter if the base system is from a different mirror timestamp
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# procps is needed for /sbin/sysctl
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tmpdir="$(mktemp -d)"
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./mmdebstrap --variant=apt --architectures=amd64,armhf --mode=unshare \
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--include=perl-doc,linux-image-amd64,systemd-sysv,perl,arch-test,fakechroot,fakeroot,mount,uidmap,proot,qemu-user-static,binfmt-support,qemu-user,dpkg-dev,mini-httpd,libdevel-cover-perl,debootstrap,libfakechroot:armhf,libfakeroot:armhf,procps,apt-cudf,aspcud \
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$DEFAULT_DIST - "$mirror" > "$tmpdir/debian-chroot.tar"
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cat << END > "$tmpdir/extlinux.conf"
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default linux
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timeout 0
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label linux
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kernel /vmlinuz
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append initrd=/initrd.img root=/dev/sda1 rw console=ttyS0,115200
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serial 0 115200
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END
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cat << END > "$tmpdir/mmdebstrap.service"
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[Unit]
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Description=mmdebstrap worker script
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[Service]
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Type=oneshot
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ExecStart=/worker.sh
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[Install]
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WantedBy=multi-user.target
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END
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# here is something crazy:
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# as we run mmdebstrap, the process ends up being run by different users with
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# different privileges (real or fake). But for being able to collect
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# Devel::Cover data, they must all share a single directory. The only way that
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# I found to make this work is to mount the database directory with a
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# filesystem that doesn't support ownership information at all and a umask that
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# gives read/write access to everybody.
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# https://github.com/pjcj/Devel--Cover/issues/223
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cat << 'END' > "$tmpdir/worker.sh"
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#!/bin/sh
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echo 'root:root' | chpasswd
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mount -t 9p -o trans=virtio,access=any mmdebstrap /mnt
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# need to restart mini-httpd because we mounted different content into www-root
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systemctl restart mini-httpd
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handler () {
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while IFS= read -r line || [ -n "$line" ]; do
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printf "%s %s: %s\n" "$(date -u -d "0 $(date +%s.%3N) seconds - $2 seconds" +"%T.%3N")" "$1" "$line"
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done
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}
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(
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cd /mnt;
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if [ -e cover_db.img ]; then
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mkdir -p cover_db
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mount -o loop,umask=000 cover_db.img cover_db
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fi
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now=$(date +%s.%3N)
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ret=0
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{ { { { {
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sh -x ./test.sh 2>&1 1>&4 3>&- 4>&-; echo $? >&2;
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} | handler E "$now" >&3;
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} 4>&1 | handler O "$now" >&3;
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} 2>&1;
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} | { read xs; exit $xs; };
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} 3>&1 || ret=$?
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if [ -e cover_db.img ]; then
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df -h cover_db
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umount cover_db
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fi
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echo $ret
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) > /mnt/result.txt 2>&1
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umount /mnt
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systemctl poweroff
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END
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chmod +x "$tmpdir/worker.sh"
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# initially we serve from the new cache so that debootstrap can grab
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# the new package repository and not the old
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cat << END > "$tmpdir/mini-httpd"
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START=1
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DAEMON_OPTS="-h 127.0.0.1 -p 80 -u nobody -dd /mnt/$newcache -i /var/run/mini-httpd.pid -T UTF-8"
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END
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cat << 'END' > "$tmpdir/hosts"
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127.0.0.1 localhost
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END
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#libguestfs-test-tool
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#export LIBGUESTFS_DEBUG=1 LIBGUESTFS_TRACE=1
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guestfish -N "$tmpdir/debian-$DEFAULT_DIST.img"=disk:3G -- \
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part-disk /dev/sda mbr : \
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part-set-bootable /dev/sda 1 true : \
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mkfs ext2 /dev/sda1 : \
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mount /dev/sda1 / : \
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tar-in "$tmpdir/debian-chroot.tar" / : \
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extlinux / : \
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copy-in "$tmpdir/extlinux.conf" / : \
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mkdir-p /etc/systemd/system/multi-user.target.wants : \
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ln-s ../mmdebstrap.service /etc/systemd/system/multi-user.target.wants/mmdebstrap.service : \
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copy-in "$tmpdir/mmdebstrap.service" /etc/systemd/system/ : \
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copy-in "$tmpdir/worker.sh" / : \
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copy-in "$tmpdir/mini-httpd" /etc/default : \
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copy-in "$tmpdir/hosts" /etc/ :
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rm "$tmpdir/extlinux.conf" "$tmpdir/worker.sh" "$tmpdir/mini-httpd" "$tmpdir/hosts" "$tmpdir/debian-chroot.tar" "$tmpdir/mmdebstrap.service"
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qemu-img convert -O qcow2 "$tmpdir/debian-$DEFAULT_DIST.img" "$newcachedir/debian-$DEFAULT_DIST.qcow"
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rm "$tmpdir/debian-$DEFAULT_DIST.img"
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rmdir "$tmpdir"
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fi
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mirror="http://127.0.0.1/debian"
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SOURCE_DATE_EPOCH=$(date --date="$(grep-dctrl -s Date -n '' "$newmirrordir/dists/unstable/Release")" +%s)
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for dist in stable testing unstable; do
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for variant in minbase buildd -; do
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# skip because of different userids for apt/systemd
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if [ "$dist" = 'stable' ] && [ "$variant" = '-' ]; then
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continue
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fi
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# skip because of #917386 and #917407
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if [ "$dist" = 'unstable' ] && [ "$variant" = '-' ]; then
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continue
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fi
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echo running debootstrap --no-merged-usr --variant=$variant $dist /tmp/debian-$dist-debootstrap $mirror
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cat << END > shared/test.sh
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#!/bin/sh
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set -eu
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export LC_ALL=C.UTF-8
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export SOURCE_DATE_EPOCH=$SOURCE_DATE_EPOCH
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debootstrap --no-merged-usr --variant=$variant $dist /tmp/debian-$dist-debootstrap $mirror
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tar --sort=name --mtime=@$SOURCE_DATE_EPOCH --clamp-mtime --numeric-owner --one-file-system -C /tmp/debian-$dist-debootstrap -c . > "$newcache/debian-$dist-$variant.tar"
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rm -r /tmp/debian-$dist-debootstrap
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END
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if [ "$HAVE_QEMU" = "yes" ]; then
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cachedir=$newcachedir ./run_qemu.sh
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else
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./run_null.sh SUDO
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fi
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done
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done
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if [ "$HAVE_QEMU" = "yes" ]; then
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# now replace the minihttpd config with one that serves the new repository
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# create a temporary directory because "copy-in" cannot rename the file
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tmpdir="$(mktemp -d)"
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cat << END > "$tmpdir/mini-httpd"
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START=1
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DAEMON_OPTS="-h 127.0.0.1 -p 80 -u nobody -dd /mnt/cache -i /var/run/mini-httpd.pid -T UTF-8"
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END
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guestfish -a "$newcachedir/debian-$DEFAULT_DIST.qcow" -i copy-in "$tmpdir/mini-httpd" /etc/default
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rm "$tmpdir/mini-httpd"
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rmdir "$tmpdir"
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fi
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# delete possibly leftover symlink
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if [ -e ./shared/cache.tmp ]; then
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rm ./shared/cache.tmp
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fi
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# now atomically switch the symlink to point to the other directory
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ln -s $newcache ./shared/cache.tmp
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mv --no-target-directory ./shared/cache.tmp ./shared/cache
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# be very careful with removing the old directory
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for dist in stable testing unstable; do
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for variant in minbase buildd -; do
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if [ -e "$oldcachedir/debian-$dist-$variant.tar" ]; then
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rm "$oldcachedir/debian-$dist-$variant.tar"
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fi
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done
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if [ -e "$oldcachedir/debian/dists/$dist" ]; then
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rm --one-file-system --recursive "$oldcachedir/debian/dists/$dist"
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fi
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if [ "$dist" = "stable" ]; then
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if [ -e "$oldcachedir/debian/dists/stable-updates" ]; then
|
|
rm --one-file-system --recursive "$oldcachedir/debian/dists/stable-updates"
|
|
fi
|
|
if [ -e "$oldcachedir/debian-security/dists/stable/updates" ]; then
|
|
rm --one-file-system --recursive "$oldcachedir/debian-security/dists/stable/updates"
|
|
fi
|
|
fi
|
|
done
|
|
if [ -e $oldcachedir/debian-*.qcow ]; then
|
|
rm --one-file-system "$oldcachedir"/debian-*.qcow
|
|
fi
|
|
if [ -e "$oldcachedir/debian/pool/main" ]; then
|
|
rm --one-file-system --recursive "$oldcachedir/debian/pool/main"
|
|
fi
|
|
if [ -e "$oldcachedir/debian-security/pool/updates/main" ]; then
|
|
rm --one-file-system --recursive "$oldcachedir/debian-security/pool/updates/main"
|
|
fi
|
|
# now the rest should only be empty directories
|
|
if [ -e "$oldcachedir" ]; then
|
|
find "$oldcachedir" -depth -print0 | xargs -0 --no-run-if-empty rmdir
|
|
fi
|