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|
summary: Check that snap-mgmt.sh works
details: |
Check that "snap-mgmt.sh --purge" removes all data installed by snapd.
This includes /var/snap, some writable parts of /var/lib/snapd.
/run/snapd/ns should be unmounted. Systemd and dbus configuration
managed in /etc should also be removed.
# slow in autopkgtest (>1m)
backends: [-autopkgtest]
# purging everything on core devices will not work
systems: [-ubuntu-core-*]
prepare: |
# TODO: unify this with tests/main/postrm-purge/task.yaml
# note: no need to unset these since this spread test purges snapd totally
# and snapd won't be around to respond, much less remove any state since
# the state should be removed by the test
snap set system experimental.user-daemons=true
# Install a number of snaps that contain various features that have
# representation in the file system.
for name in test-snapd-service test-snapd-timer-service socket-activation \
test-snapd-user-service test-snapd-user-service-sockets \
test-snapd-user-timer-service test-snapd-tools \
test-snapd-control-consumer test-snapd-auto-aliases \
test-snapd-kvm ; do
if echo "$name" | grep -q user && os.query is-trusty; then
# None of the "user" snaps work on 14.04
continue
fi
"$TESTSTOOLS"/snaps-state install-local "$name"
snap list | MATCH test-snapd-service
done
# kvm interface needs manual connection
snap connect test-snapd-kvm:kvm
snap install --edge test-snapd-dbus-provider
snap list | MATCH test-snapd-dbus-provider
if ! os.query is-trusty; then
snap install --edge test-snapd-dbus-service
snap list | MATCH test-snapd-dbus-service
fi
if ! os.query is-trusty && ! os.query is-amazon-linux && ! os.query is-centos 7 && ! os.query is-xenial; then
# create a quota with a service in it
snap set-quota group1 test-snapd-service --memory=100MB
fi
SNAP_MOUNT_DIR="$(os.paths snap-mount-dir)"
before=$(find "${SNAP_MOUNT_DIR}" -type d | wc -l)
if [ "$before" -lt 2 ]; then
echo "${SNAP_MOUNT_DIR} empty - test setup broken"
exit 1
fi
echo "test service is known to systemd and enabled"
systemctl list-unit-files --type service --no-legend | MATCH 'snap.test-snapd-service\..*\.service\s+enabled'
# install a snap with some components to make sure that we properly clean
# those up too
snap install test-snap-with-components+one+two
# expecting to find various files that snap installation produced
test "$(find /etc/udev/rules.d -name '*-snap.*.rules' | wc -l)" -gt 0
test "$(find /etc/dbus-1/system.d -name 'snap.*.conf' | wc -l)" -gt 0
test "$(find /etc/modules-load.d/ -name 'snap.*.conf' | wc -l)" -gt 0
test "$(find /etc/systemd/system -name 'snap.*.service' | wc -l)" -gt 0
test "$(find /etc/systemd/system -name 'snap.*.timer' | wc -l)" -gt 0
test "$(find /etc/systemd/system -name 'snap.*.socket' | wc -l)" -gt 0
if ! os.query is-trusty; then
test "$(find /etc/systemd/user -name 'snap.*.service' | wc -l)" -gt 0
test "$(find /etc/systemd/user -name 'snap.*.timer' | wc -l)" -gt 0
test "$(find /etc/systemd/user -name 'snap.*.socket' | wc -l)" -gt 0
test "$(find /var/lib/snapd/dbus-1/services -name '*.service' | wc -l)" -gt 0
test "$(find /var/lib/snapd/dbus-1/system-services -name '*.service' | wc -l)" -gt 0
fi
if ! os.query is-trusty && ! os.query is-amazon-linux && ! os.query is-centos 7 && ! os.query is-xenial; then
test "$(find /etc/systemd/system -name 'snap.*.slice' | wc -l)" -gt 0
fi
restore: |
# during purge, there is no way to stop snap services running in user
# sessions, so take a best effort approach to kill all the processes which
# are in cgroups that resemble snap services in user sessions
find /sys/fs/cgroup/ -type d -path "*/user.slice/*/snap.*service" -prune | while read -r svc; do
while (("$(wc -l < "$svc/cgroup.procs" || echo 0)" > 0)); do
# for compatibility with v1/hybrid and old kernels not having cgroup.kill
if [ -f "$svc/cgroup.kill" ]; then
echo 1 > "$svc/cgroup.kill"
else
# shellcheck disable=SC2002
cat "$svc/cgroup.procs" | while read -r killpid; do
kill -9 "$killpid" || true
done
fi
sleep 1
done
rmdir "$svc" || true
done
#shellcheck source=tests/lib/pkgdb.sh
. "$TESTSLIB/pkgdb.sh"
if [ -e pkg-removed ]; then
distro_install_build_snapd
rm pkg-removed
fi
debug: |
systemctl --no-legend --full | grep -E 'snap\..*\.(service|timer|socket|slice)' || true
execute: |
echo "Stop snapd before purging"
systemctl stop snapd.service snapd.socket
echo "A purge will really purge things"
snapd.tool exec snap-mgmt --purge
touch pkg-removed
echo "Data directories are empty"
SNAP_MOUNT_DIR="$(os.paths snap-mount-dir)"
emptydirs="${SNAP_MOUNT_DIR} \
/var/snap \
/var/lib/snapd/dbus-1/services/ \
/var/lib/snapd/dbus-1/system-services/ \
/var/lib/snapd/desktop/applications/ \
/var/lib/snapd/seccomp/bpf/ \
/var/lib/snapd/device/ \
/var/lib/snapd/assertions/ \
/var/lib/snapd/cookie/ \
/var/lib/snapd/cache/ \
"
for d in $emptydirs ; do
n=$(find "$d" | wc -l)
if [ "$n" -gt 1 ]; then
echo "$d not empty after snap-mgmt.sh purge"
ls -lR "$d"
exit 1
fi
done
echo "State file is gone"
not test -f /var/lib/snapd/state.json
echo "And so is the system key"
not test -f /var/lib/snapd/system-key
echo "Preserved namespaces directory is not mounted"
NOMATCH "/run/snapd/ns" < /proc/mounts
systemctl daemon-reload
echo "Snap *.service files are removed"
systemctl list-unit-files --type service | NOMATCH '^snap.test-snapd-service.*\.service'
echo "Snap quota group slice files are removed"
systemctl list-unit-files --type slice | NOMATCH '^snap.group.slice'
echo "No dangling service symlinks are left behind"
test -z "$(find /etc/systemd/system/multi-user.target.wants/ -name 'snap.test-snapd-service.*')"
# shellcheck disable=SC2251
! test -d /etc/systemd/system/snapd.mounts.target.wants
# shellcheck disable=SC2251
! test -d /etc/systemd/system/multi-user.target.wants
test -z "$(find /etc/systemd/system/sockets.target.wants/ -name 'snap.*')"
test -z "$(find /etc/systemd/system/timers.target.wants/ -name 'snap.*')"
if ! os.query is-trusty; then
test -z "$(find /etc/systemd/user/default.target.wants/ -name 'snap.*')"
test -z "$(find /etc/systemd/user/sockets.target.wants/ -name 'snap.*')"
test -z "$(find /etc/systemd/user/timers.target.wants/ -name 'snap.*')"
fi
test "$(find /etc/udev/rules.d -name '*-snap.*.rules' | wc -l)" -eq 0
test "$(find /etc/dbus-1/system.d -name 'snap.*.conf' | wc -l)" -eq 0
test "$(find /etc/modules-load.d/ -name 'snap.*.conf' | wc -l)" -eq 0
test "$(find /etc/systemd/system -name 'snap.*.service' -a ! -name "snap.mount.service" | wc -l)" -eq 0
test "$(find /etc/systemd/system -name 'snap.*.timer' | wc -l)" -eq 0
test "$(find /etc/systemd/system -name 'snap.*.socket' | wc -l)" -eq 0
if ! os.query is-trusty; then
test "$(find /etc/systemd/user -name 'snap.*.service' | wc -l)" -eq 0
test "$(find /etc/systemd/user -name 'snap.*.timer' | wc -l)" -eq 0
test "$(find /etc/systemd/user -name 'snap.*.socket' | wc -l)" -eq 0
fi
|
