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|
#!/bin/bash -x
# shellcheck source=tests/lib/state.sh
. "$TESTSLIB/state.sh"
reset_classic() {
# Reload all service units as in some situations the unit might
# have changed on the disk.
systemctl daemon-reload
tests.systemd stop-unit snapd.service snapd.socket
# none of the purge steps stop the user services, we need to do it
# explicitly, at least for the root user
systemctl --user stop snapd.session-agent.socket || true
SNAP_MOUNT_DIR="$(os.paths snap-mount-dir)"
case "$SPREAD_SYSTEM" in
ubuntu-*|debian-*)
sh -x "${SPREAD_PATH}/debian/snapd.prerm" remove
sh -x "${SPREAD_PATH}/debian/snapd.postrm" purge
;;
fedora-*|opensuse-*|arch-*|amazon-*|centos-*)
# We don't know if snap-mgmt was built, so call the *.in file
# directly and pass arguments that will override the placeholders
sh -x "${SPREAD_PATH}/cmd/snap-mgmt/snap-mgmt.sh.in" \
--snap-mount-dir="$SNAP_MOUNT_DIR" \
--purge
# The script above doesn't remove the snapd directory as this
# is normally done by the rpm packaging system.
rm -rf /var/lib/snapd
;;
*)
echo "don't know how to reset $SPREAD_SYSTEM"
exit 1
;;
esac
local unexpected_units=0
for unit in $(systemctl --plain --no-legend --full | awk '/^ *snap\..*\.service +loaded/ {print $1}'); do
case "$unit" in
snap.lxd.workaround.service)
systemctl stop "$unit" || true
;;
*)
echo "unexpected unit $unit"
unexpected_units=1
;;
esac
done
if [ "$unexpected_units" != "0" ]; then
echo "error: found unexpected systemd units after purge"
exit 1
fi
# purge may have removed udev rules, retrigger device events
udevadm trigger
udevadm settle
# purge has removed units, reload the state now
systemctl daemon-reload
# extra purge
rm -rvf /var/snap "${SNAP_MOUNT_DIR:?}/bin"
mkdir -p "$SNAP_MOUNT_DIR" /var/snap /var/lib/snapd
if [ "$(find "$SNAP_MOUNT_DIR" /var/snap -mindepth 1 -print -quit)" ]; then
echo "postinst purge failed"
ls -lR "$SNAP_MOUNT_DIR"/ /var/snap/
exit 1
fi
rm -rf /tmp/snap-private-tmp/*
case "$SPREAD_SYSTEM" in
fedora-*|centos-*)
# On systems running SELinux we need to restore the context of the
# directories we just recreated. Otherwise, the entries created
# inside will be incorrectly labeled.
restorecon -F -v -R "$SNAP_MOUNT_DIR" /var/snap /var/lib/snapd
;;
esac
# systemd retains the failed state of service units, even after they are
# removed, we need to reset their 'failed state'
systemctl --plain --failed --no-legend --full | awk '/^ *snap\..*\.service +(error|not-found) +failed/ {print $1}' | while read -r unit; do
systemctl reset-failed "$unit" || true
done
if os.query is-trusty; then
systemctl start snap.mount.service
fi
# Clean root home
rm -rf /root/snap /root/.snap/gnupg /root/.{bash_history,local,cache,config} /root/.snap/data
# Clean test home
rm -rf /home/test/snap /home/test/.{bash_history,local,cache,config} /home/test/.snap/data
# Clean /tmp
rm -f /tmp/core* /tmp/ubuntu-core*
if [ "$1" = "--reuse-core" ]; then
# Restore snapd state and start systemd service units
restore_snapd_state
escaped_snap_mount_dir="$(systemd-escape --path "$SNAP_MOUNT_DIR")"
mounts="$(systemctl list-unit-files --full | grep "^${escaped_snap_mount_dir}[-.].*\\.mount" | cut -f1 -d ' ')"
services="$(systemctl list-unit-files --full | grep "^${escaped_snap_mount_dir}[-.].*\\.service" | cut -f1 -d ' ')"
systemctl daemon-reload # Workaround for http://paste.ubuntu.com/17735820/
for unit in $mounts $services; do
systemctl start "$unit"
done
# force all profiles to be re-generated
rm -f /var/lib/snapd/system-key
# force snapd-session-agent.socket fto be re-generated
rm -f /run/user/0/snapd-session-agent.socket
fi
# Make sure the systemd user wants directories exist
mkdir -p /etc/systemd/user/sockets.target.wants /etc/systemd/user/timers.target.wants /etc/systemd/user/default.target.wants
if [ "$1" != "--keep-stopped" ]; then
systemctl start snapd.socket
EXTRA_NC_ARGS="-q 1"
case "$SPREAD_SYSTEM" in
debian-10-*)
# Param -q is not available on fedora 34
EXTRA_NC_ARGS="-w 1"
;;
fedora-*|amazon-*|centos-*)
EXTRA_NC_ARGS=""
;;
esac
# wait for snapd listening
retry -n 120 --wait 0.5 sh -c "printf 'GET / HTTP/1.0\r\n\r\n' | nc -U $EXTRA_NC_ARGS /run/snapd.socket"
fi
}
reset_all_snap() {
# remove all leftover snaps
# make sure snapd is running before we attempt to remove snaps, in case a test stopped it
if ! systemctl status snapd.service snapd.socket >/dev/null; then
systemctl start snapd.service snapd.socket
fi
skip_snaps=""
PREINSTALLED_SNAPS="$(tests.env get initial PREINSTALLED_SNAPS)"
for skip_remove_snap in $SKIP_REMOVE_SNAPS $PREINSTALLED_SNAPS; do
skip_snaps="$skip_snaps --skip $skip_remove_snap"
done
# shellcheck disable=SC2086
"$TESTSTOOLS"/snaps.cleanup $skip_snaps
# purge may have removed udev rules, retrigger device events
udevadm trigger
udevadm settle
# ensure we have the same state as initially
systemctl stop snapd.service snapd.socket
restore_snapd_state
rm -rf /root/.snap
rm -rf /tmp/snap-private-tmp/snap.*
if [ "$1" != "--keep-stopped" ]; then
systemctl start snapd.service snapd.socket
fi
# Exit in case there is a snap in broken state after restoring the snapd state
if snap list --all | grep -E "broken$"; then
echo "snap in broken state"
exit 1
fi
}
# Before resetting all snapd state, specifically remove all disabled snaps that
# are not from the store, since otherwise their revision number will remain
# mounted at /snap/<name>/x<rev>/ and if we execute multiple tests that use this
# same snap, the previous mount unit for x2 for example will stay around if we
# simply revert to x1 and then delete state.json, since x2 is still mounted if
# we then again install that snap again twice (i.e. to get to x2), the mount
# unit will still be active and thus the previous iteration of this snap at
# revision x2 will be used as this new revision's files for x2. This is
# particularly damaging for the snapd snap when we are installing different
# versions such as in the snapd-refresh-vs-services (and the -reboots variant)
# test, since the bug manifests as us trying to refresh to a particular revision
# of snapd, but that revision is still mounted from the previous iteration of
# the test and thus gets the wrong version, as displayed in this output:
#
# + snap install --dangerous snapd_2.49.1.snap
# 2021-04-23T20:11:20Z INFO Waiting for automatic snapd restart...
# snapd 2.49.2 installed
#
remove_disabled_snaps
# When the variable REUSE_SNAPD is set to 1, we don't remove and purge snapd.
# In that case we just cleanup the environment by removing installed snaps as
# it is done for core systems.
if os.query is-core || [ "$REUSE_SNAPD" = 1 ]; then
reset_all_snap "$@"
else
reset_classic "$@"
fi
# Discard all mount namespaces and active mount profiles.
# This is duplicating logic in snap-discard-ns but it doesn't
# support --all switch yet so we cannot use it.
if [ -d /run/snapd/ns ]; then
for mnt in /run/snapd/ns/*.mnt; do
umount -l "$mnt" || true
rm -f "$mnt"
done
find /run/snapd/ns/ \( -name '*.fstab' -o -name '*.user-fstab' -o -name '*.info' \) -delete
fi
|
