systemd/test/units/testsuite-60.sh
Richard Maw 8799346862 test: mount overlayfs over /usr in some tests
Most of the integration tests have been made to not write to /usr
but some genuinely need to do so.

Because mkosi creates images with a read-only /usr
it is not normally writeable.

By mounting an overlayfs with /usr as the lower dir
and upper and working dirs in /var tests may write to /usr.
2023-12-13 17:55:45 +00:00

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#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later
set -eux
set -o pipefail
# shellcheck source=test/units/util.sh
. "$(dirname "$0")"/util.sh
maybe_mount_usr_overlay
trap 'maybe_umount_usr_overlay' EXIT
teardown_test_dependencies() (
set +eux
if mountpoint /tmp/deptest; then
umount /tmp/deptest
fi
if [[ -n "${LOOP}" ]]; then
losetup -d "${LOOP}" || :
fi
if [[ -n "${LOOP_0}" ]]; then
losetup -d "${LOOP_0}" || :
fi
if [[ -n "${LOOP_1}" ]]; then
losetup -d "${LOOP_1}" || :
fi
rm -f /tmp/testsuite-60-dependencies-0.img
rm -f /tmp/testsuite-60-dependencies-1.img
rm -f /run/systemd/system/tmp-deptest.mount
systemctl daemon-reload
return 0
)
setup_loop() {
truncate -s 30m "/tmp/testsuite-60-dependencies-${1?}.img"
sfdisk --wipe=always "/tmp/testsuite-60-dependencies-${1?}.img" <<EOF
label:gpt
name="loop${1?}-part1"
EOF
LOOP=$(losetup -P --show -f "/tmp/testsuite-60-dependencies-${1?}.img")
udevadm wait --settle --timeout=10 "${LOOP}"
udevadm lock --device="${LOOP}" mkfs.ext4 -L "partname${1?}-1" "${LOOP}p1"
}
check_dependencies() {
local escaped_0 escaped_1 after
escaped_0=$(systemd-escape -p "${LOOP_0}p1")
escaped_1=$(systemd-escape -p "${LOOP_1}p1")
if [[ -f /run/systemd/system/tmp-deptest.mount ]]; then
after=$(systemctl show --property=After --value tmp-deptest.mount)
assert_not_in "local-fs-pre.target" "$after"
assert_in "remote-fs-pre.target" "$after"
assert_in "network.target" "$after"
fi
# mount LOOP_0
mount -t ext4 "${LOOP_0}p1" /tmp/deptest
sleep 1
after=$(systemctl show --property=After --value tmp-deptest.mount)
assert_in "local-fs-pre.target" "$after"
assert_not_in "remote-fs-pre.target" "$after"
assert_not_in "network.target" "$after"
assert_in "${escaped_0}.device" "$after"
assert_in "blockdev@${escaped_0}.target" "$after"
assert_not_in "${escaped_1}.device" "$after"
assert_not_in "blockdev@${escaped_1}.target" "$after"
umount /tmp/deptest
if [[ -f /run/systemd/system/tmp-deptest.mount ]]; then
after=$(systemctl show --property=After --value tmp-deptest.mount)
assert_not_in "local-fs-pre.target" "$after"
assert_in "remote-fs-pre.target" "$after"
assert_in "network.target" "$after"
fi
# mount LOOP_1 (using fake _netdev option)
mount -t ext4 -o _netdev "${LOOP_1}p1" /tmp/deptest
sleep 1
after=$(systemctl show --property=After --value tmp-deptest.mount)
assert_not_in "local-fs-pre.target" "$after"
assert_in "remote-fs-pre.target" "$after"
assert_in "network.target" "$after"
assert_not_in "${escaped_0}.device" "$after"
assert_not_in "blockdev@${escaped_0}.target" "$after"
assert_in "${escaped_1}.device" "$after"
assert_in "blockdev@${escaped_1}.target" "$after"
umount /tmp/deptest
if [[ -f /run/systemd/system/tmp-deptest.mount ]]; then
after=$(systemctl show --property=After --value tmp-deptest.mount)
assert_not_in "local-fs-pre.target" "$after"
assert_in "remote-fs-pre.target" "$after"
assert_in "network.target" "$after"
fi
# mount tmpfs
mount -t tmpfs tmpfs /tmp/deptest
sleep 1
after=$(systemctl show --property=After --value tmp-deptest.mount)
assert_in "local-fs-pre.target" "$after"
assert_not_in "remote-fs-pre.target" "$after"
assert_not_in "network.target" "$after"
assert_not_in "${escaped_0}.device" "$after"
assert_not_in "blockdev@${escaped_0}.target" "$after"
assert_not_in "${escaped_1}.device" "$after"
assert_not_in "blockdev@${escaped_1}.target" "$after"
umount /tmp/deptest
if [[ -f /run/systemd/system/tmp-deptest.mount ]]; then
after=$(systemctl show --property=After --value tmp-deptest.mount)
assert_not_in "local-fs-pre.target" "$after"
assert_in "remote-fs-pre.target" "$after"
assert_in "network.target" "$after"
fi
}
test_dependencies() {
if systemd-detect-virt --quiet --container; then
echo "Skipping test_dependencies in container"
return
fi
trap teardown_test_dependencies RETURN
setup_loop 0
LOOP_0="${LOOP}"
LOOP=
setup_loop 1
LOOP_1="${LOOP}"
LOOP=
mkdir -p /tmp/deptest
# without .mount file
check_dependencies
# create .mount file
mkdir -p /run/systemd/system
cat >/run/systemd/system/tmp-deptest.mount <<EOF
[Mount]
Where=/tmp/deptest
What=192.168.0.1:/tmp/mnt
Type=nfs
EOF
systemctl daemon-reload
# with .mount file
check_dependencies
}
test_issue_20329() {
local tmpdir unit
tmpdir="$(mktemp -d)"
unit=$(systemd-escape --suffix mount --path "$tmpdir")
# Set up test mount unit
cat >/run/systemd/system/"$unit" <<EOF
[Mount]
What=tmpfs
Where=$tmpdir
Type=tmpfs
Options=defaults,nofail
EOF
# Start the unit
systemctl daemon-reload
systemctl start "$unit"
[[ "$(systemctl show --property SubState --value "$unit")" = "mounted" ]] || {
echo >&2 "Test mount \"$unit\" unit isn't mounted"
return 1
}
mountpoint -q "$tmpdir"
trap 'systemctl stop $unit' RETURN
# Trigger the mount ratelimiting
cd "$(mktemp -d)"
mkdir foo
for _ in {1..50}; do
mount --bind foo foo
umount foo
done
# Unmount the test mount and start it immediately again via systemd
umount "$tmpdir"
systemctl start "$unit"
# Make sure it is seen as mounted by systemd and it actually is mounted
[[ "$(systemctl show --property SubState --value "$unit")" = "mounted" ]] || {
echo >&2 "Test mount \"$unit\" unit isn't in \"mounted\" state"
return 1
}
mountpoint -q "$tmpdir" || {
echo >&2 "Test mount \"$unit\" is in \"mounted\" state, actually is not mounted"
return 1
}
}
test_issue_23796() {
local mount_path mount_mytmpfs
mount_path="$(command -v mount 2>/dev/null)"
mount_mytmpfs="${mount_path/\/bin/\/sbin}.mytmpfs"
cat >"$mount_mytmpfs" <<EOF
#!/bin/bash
sleep ".\$RANDOM"
exec -- $mount_path -t tmpfs tmpfs "\$2"
EOF
chmod +x "$mount_mytmpfs"
mkdir -p /run/systemd/system
cat >/run/systemd/system/tmp-hoge.mount <<EOF
[Mount]
What=mytmpfs
Where=/tmp/hoge
Type=mytmpfs
EOF
# shellcheck disable=SC2064
trap "rm -f /run/systemd/system/tmp-hoge.mount '$mount_mytmpfs'" RETURN
for _ in {1..10}; do
systemctl --no-block start tmp-hoge.mount
sleep ".$RANDOM"
systemctl daemon-reexec
sleep 1
if [[ "$(systemctl is-failed tmp-hoge.mount)" == "failed" ]] || \
journalctl -u tmp-hoge.mount -q --grep "but there is no mount"; then
exit 1
fi
systemctl stop tmp-hoge.mount
done
}
systemd-analyze log-level debug
systemd-analyze log-target journal
NUM_DIRS=20
# make sure we can handle mounts at very long paths such that mount unit name must be hashed to fall within our unit name limit
LONGPATH="$(printf "/$(printf "x%0.s" {1..255})%0.s" {1..7})"
LONGMNT="$(systemd-escape --suffix=mount --path "$LONGPATH")"
TS="$(date '+%H:%M:%S')"
mkdir -p "$LONGPATH"
mount -t tmpfs tmpfs "$LONGPATH"
systemctl daemon-reload
# check that unit is active(mounted)
systemctl --no-pager show -p SubState --value "$LONGPATH" | grep -q mounted
# check that relevant part of journal doesn't contain any errors related to unit
[ "$(journalctl -b --since="$TS" --priority=err | grep -c "$LONGMNT")" = "0" ]
# check that we can successfully stop the mount unit
systemctl stop "$LONGPATH"
rm -rf "$LONGPATH"
# mount/unmount enough times to trigger the /proc/self/mountinfo parsing rate limiting
for ((i = 0; i < NUM_DIRS; i++)); do
mkdir "/tmp/meow${i}"
done
TS="$(date '+%H:%M:%S')"
for ((i = 0; i < NUM_DIRS; i++)); do
mount -t tmpfs tmpfs "/tmp/meow${i}"
done
systemctl daemon-reload
systemctl list-units -t mount tmp-meow* | grep -q tmp-meow
for ((i = 0; i < NUM_DIRS; i++)); do
umount "/tmp/meow${i}"
done
# Figure out if we have entered the rate limit state.
# If the infra is slow we might not enter the rate limit state; in that case skip the exit check.
if timeout 2m bash -c "until journalctl -u init.scope --since=$TS | grep -q '(mount-monitor-dispatch) entered rate limit'; do sleep 1; done"; then
timeout 2m bash -c "until journalctl -u init.scope --since=$TS | grep -q '(mount-monitor-dispatch) left rate limit'; do sleep 1; done"
fi
# Verify that the mount units are always cleaned up at the end.
# Give some time for units to settle so we don't race between exiting the rate limit state and cleaning up the units.
timeout 2m bash -c 'while systemctl list-units -t mount tmp-meow* | grep -q tmp-meow; do systemctl daemon-reload; sleep 10; done'
# test for issue #19983 and #23552.
test_dependencies
# test that handling of mount start jobs is delayed when /proc/self/mouninfo monitor is rate limited
test_issue_20329
# test for reexecuting with background mount job
test_issue_23796
systemd-analyze log-level info
touch /testok