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systemd/test/units/TEST-17-UDEV.diskseq.sh

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#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later
# shellcheck disable=SC2010
# shellcheck disable=SC2012
# shellcheck disable=SC2317
set -ex
set -o pipefail
# shellcheck source=test/units/util.sh
. "$(dirname "$0")"/util.sh
# This is a test case for issue #34637.
at_exit() (
set +e
systemctl stop test-diskseq.service || :
rm -f /run/systemd/system/test-diskseq.service
systemctl daemon-reload
[[ -d "$TMPDIR" ]] && rm -rf "$TMPDIR"
udevadm control --log-level=info
)
trap at_exit EXIT
udevadm control --log-level=debug
TMPDIR="$(mktemp -d)"
truncate -s 16M "$TMPDIR"/foo.raw
mkfs.ext4 -L foo "$TMPDIR"/foo.raw
mkdir -p /run/systemd/system/
cat >/run/systemd/system/test-diskseq.service <<EOF
[Unit]
StartLimitIntervalSec=0
[Service]
ExecStart=false
Restart=on-failure
MountImages=$TMPDIR/foo.raw:/var
EOF
systemctl daemon-reload
udevadm settle
# Check if no lock file exists, if the lock directory exists.
if [[ -d /run/udev/links.lock/ ]]; then
[[ "$(ls /run/udev/links.lock/ | wc -l)" == 0 ]]
fi
# Save the current number of the directories.
NUM_DISKSEQ=$(ls /run/udev/links/ | grep -c by-diskseq || :)
systemctl start --no-block test-diskseq.service
for _ in {0..100}; do
sleep .1
n=$(ls /run/udev/links/ | grep -c by-diskseq || :)
(( n <= NUM_DISKSEQ + 1 ))
done
systemctl stop test-diskseq.service || :
udevadm settle
# Check if the lock directory exists, but no lock file exists in it.
[[ -d /run/udev/links.lock/ ]]
[[ "$(ls /run/udev/links.lock/ | wc -l)" == 0 ]]
exit 0