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|
#!/bin/bash -e
show_help() {
echo "usage: snaps.cleanup [--skip <SNAP_NAME>]"
echo
echo "cleanup the snaps installed in the current system"
}
cleanup() {
snap_mount_dir="$(os.paths snap-mount-dir)"
remove_bases=""
skip_bases=""
gadget_name="$(snaps.name gadget)"
kernel_name="$(snaps.name kernel)"
core_name="$(snaps.name core)"
# remove first snapcraft to avoid reinstallation of lxd triggered by
# snapcraft remove hook.
[ -d "$snap_mount_dir"/snapcraft ] && snap remove --purge snapcraft
# remove all app snaps first
for snap in "$snap_mount_dir"/*; do
snap="${snap:6}"
case "$snap" in
"bin" | "$gadget_name" | "$kernel_name" | "$core_name" | "snapd" |README)
;;
*)
# Check if a snap should be kept, there's a list of those in spread.yaml.
local keep=0
# shellcheck disable=SC2068
for skip_snap in $@; do
if [ "$snap" = "$skip_snap" ]; then
# Skip the snap base removal as well
snap_base=$(grep "base:" "$snap_mount_dir/$snap/current/meta/snap.yaml" | awk '{ print $2 }')
if [ -n "$snap_base" ]; then
skip_bases="$skip_bases $snap_base"
fi
keep=1
break
fi
done
if [ "$keep" -eq 0 ]; then
# remove regular snaps right away; collect base snaps for removal in the second step below?
if snap info --verbose "$snap" | grep -E '^type: +(base|core)'; then
if [ -z "$remove_bases" ]; then
remove_bases="$snap"
else
remove_bases="$remove_bases $snap"
fi
else
snap remove --purge "$snap"
fi
fi
;;
esac
done
# remove all base/os snaps at the end
# skip the base snaps for the
if [ -n "$remove_bases" ]; then
for base in $remove_bases; do
if ! [[ $skip_bases =~ (^|[[:space:]])$base($|[[:space:]]) ]]; then
snap remove --purge "$base"
if [ -d "$snap_mount_dir/$base" ]; then
echo "Error: removing base $base has unexpected leftover dir $snap_mount_dir/$base"
ls -al "$snap_mount_dir"
ls -al "$snap_mount_dir/$base"
exit 1
fi
fi
done
fi
}
main() {
local skip
skip=""
while [ $# -gt 0 ]; do
case "$1" in
-h|--help)
show_help
exit 0
;;
--skip)
skip="$skip $2"
shift 2
;;
*)
echo "snaps.cleanup: unknown subcommand $1" >&2
show_help
exit 1
;;
esac
done
cleanup "$skip"
}
main "$@"
|
