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@ -1,6 +1,7 @@
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# vi: ts=4 expandtab syntax=sh
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imagesize=${IMAGE_SIZE:-$((2252*1024**2))} # 2.2G (the current size we ship)
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#imagesize=${IMAGE_SIZE:-$((2252*1024**2))} # 2.2G (the current size we ship)
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imagesize=${IMAGE_SIZE:-2361393152} # 2.2G (the current size we ship)
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fs_label="${FS_LABEL:-rootfs}"
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rootfs_dev_mapper=
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@ -360,3 +361,106 @@ recreate_initramfs() {
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esac
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mv "$CHROOT"/boot/initrd.img-* $DESTDIR
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}
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release_ver() {
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# Return the release version number
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distro-info --series="$LB_DISTRIBUTION" -r | awk '{ print $1 }'
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}
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_snap_preseed() {
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# Download the snap/assertion and add to the preseed
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local CHROOT_ROOT=$1
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local SNAP=$2
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local SNAP_NAME=${SNAP%/*}
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local CHANNEL=${3:?Snap channel must be specified}
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local seed_dir="$CHROOT_ROOT/var/lib/snapd/seed"
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local snaps_dir="$seed_dir/snaps"
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local seed_yaml="$seed_dir/seed.yaml"
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local assertions_dir="$seed_dir/assertions"
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# Download the snap & assertion
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local snap_download_failed=0
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chroot $CHROOT_ROOT sh -c "
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set -x;
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cd /var/lib/snapd/seed;
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SNAPPY_STORE_NO_CDN=1 snap download \
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--channel=$CHANNEL \"$SNAP_NAME\"" || snap_download_failed=1
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if [ $snap_download_failed = 1 ] ; then
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echo "If the channel ($CHANNEL) includes '*/ubuntu-##.##' track per "
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echo "Ubuntu policy (ex. stable/ubuntu-18.04) the publisher will need "
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echo "to temporarily create the channel/track to allow fallback during"
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echo "download (ex. stable/ubuntu-18.04 falls back to stable if the"
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echo "prior had been created in the past)."
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exit 1
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fi
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mv -v $seed_dir/*.assert $assertions_dir
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mv -v $seed_dir/*.snap $snaps_dir
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# Add the snap to the seed.yaml
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! [ -e $seed_yaml ] && echo "snaps:" > $seed_yaml
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cat <<EOF >> $seed_yaml
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-
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name: ${SNAP_NAME}
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channel: ${CHANNEL}
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EOF
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case ${SNAP} in */classic) echo " classic: true" >> $seed_yaml;; esac
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echo -n " file: " >> $seed_yaml
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(cd $snaps_dir; ls -1 ${SNAP_NAME}_*.snap) >> $seed_yaml
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}
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snap_prepare() {
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# Configure basic snapd assertions and pre-seeds the 'core' snap
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local CHROOT_ROOT=$1
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local seed_dir="$CHROOT_ROOT/var/lib/snapd/seed"
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local snaps_dir="$seed_dir/snaps"
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local assertions_dir="$seed_dir/assertions"
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local model_assertion="$assertions_dir/generic-classic.model"
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local account_key_assertion="$assertions_dir/generic.account-key"
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local account_assertion="$assertions_dir/generic.account"
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mkdir -p "$assertions_dir"
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mkdir -p "$snaps_dir"
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if ! [ -e "$model_assertion" ] ; then
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snap known --remote model series=16 \
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model=generic-classic brand-id=generic \
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> "$model_assertion"
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fi
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if ! [ -e "$account_key_assertion" ] ; then
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local account_key=$(sed -n -e's/sign-key-sha3-384: //p' \
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< "$model_assertion")
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snap known --remote account-key \
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public-key-sha3-384="$account_key" \
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> "$account_key_assertion"
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fi
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if ! [ -e "$account_assertion" ] ; then
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local account=$(sed -n -e's/account-id: //p' < "$account_key_assertion")
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snap known --remote account account-id=$account \
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> "$account_assertion"
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fi
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# Download the core snap
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if ! [ -f $snaps_dir/core_[0-9]*.snap ] ; then
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_snap_preseed $CHROOT_ROOT core stable
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fi
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}
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snap_preseed() {
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# Preseed a snap in the image
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local CHROOT_ROOT=$1
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local SNAP=$2
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# Per Ubuntu policy, all seeded snaps (with the exception of the core
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# snap) must pull from stable/ubuntu-$(release_ver) as their channel.
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local CHANNEL=${3:-"stable/ubuntu-$(release_ver)"}
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snap_prepare $CHROOT_ROOT
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_snap_preseed $CHROOT_ROOT $SNAP $CHANNEL
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}
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Steve Langasek
7 years ago