test: add udev tests for SYSTEMD_WANTS

For issue #23410.

test/units/testsuite-17.07.sh

@@ -0,0 +1,205 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -ex
+set -o pipefail
+
+# shellcheck source=test/units/assert.sh
+. "$(dirname "$0")"/assert.sh
+
+wait_service_active() {(
+    set +ex
+    for (( i = 0; i < 20; i++ )); do
+        if (( i != 0 )); then sleep 0.5; fi
+        if systemctl --quiet is-active "${1?}"; then
+            return 0
+        fi
+    done
+    return 1
+)}
+
+wait_service_inactive() {(
+    set +ex
+    for (( i = 0; i < 20; i++ )); do
+        if (( i != 0 )); then sleep 0.5; fi
+        systemctl --quiet is-active "${1?}"
+        if [[ "$?" == "3" ]]; then
+            return 0
+        fi
+    done
+    return 1
+)}
+
+mkdir -p /run/systemd/system
+cat >/run/systemd/system/both.service <<EOF
+[Service]
+ExecStart=sleep 1000
+EOF
+
+cat >/run/systemd/system/on-add.service <<EOF
+[Service]
+ExecStart=sleep 1000
+EOF
+
+cat >/run/systemd/system/on-change.service <<EOF
+[Service]
+ExecStart=sleep 1000
+EOF
+
+systemctl daemon-reload
+
+mkdir -p /run/udev/rules.d/
+cat >/run/udev/rules.d/50-testsuite.rules <<EOF
+SUBSYSTEM=="net", KERNEL=="dummy9?", OPTIONS="log_level=debug"
+SUBSYSTEM=="net", KERNEL=="dummy9?", ACTION=="add",    TAG+="systemd", ENV{SYSTEMD_WANTS}+="both.service", ENV{SYSTEMD_WANTS}+="on-add.service"
+SUBSYSTEM=="net", KERNEL=="dummy9?", ACTION=="change", TAG+="systemd", ENV{SYSTEMD_WANTS}+="both.service", ENV{SYSTEMD_WANTS}+="on-change.service"
+EOF
+
+udevadm control --reload
+
+# StopWhenUnneeded=no
+ip link add dummy99 type dummy
+udevadm wait --settle --timeout=30 /sys/class/net/dummy99
+wait_service_active both.service
+wait_service_active on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+systemctl stop both.service on-add.service
+
+udevadm trigger --action=change --settle /sys/class/net/dummy99
+udevadm info /sys/class/net/dummy99
+wait_service_active both.service
+assert_rc 3 systemctl --quiet is-active on-add.service
+wait_service_active on-change.service
+systemctl stop both.service on-change.service
+
+ip link del dummy99
+udevadm wait --settle --timeout=30 --removed /sys/class/net/dummy99
+assert_rc 3 systemctl --quiet is-active both.service
+assert_rc 3 systemctl --quiet is-active on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+
+# StopWhenUnneeded=yes
+cat >/run/systemd/system/both.service <<EOF
+[Unit]
+StopWhenUnneeded=yes
+
+[Service]
+ExecStart=sleep 1000
+Type=simple
+EOF
+
+cat >/run/systemd/system/on-add.service <<EOF
+[Unit]
+StopWhenUnneeded=yes
+
+[Service]
+ExecStart=sleep 1000
+Type=simple
+EOF
+
+cat >/run/systemd/system/on-change.service <<EOF
+[Unit]
+StopWhenUnneeded=yes
+
+[Service]
+ExecStart=echo changed
+RemainAfterExit=true
+Type=oneshot
+EOF
+
+systemctl daemon-reload
+
+# StopWhenUnneeded=yes (single device, only add event)
+ip link add dummy99 type dummy
+udevadm wait --settle --timeout=30 /sys/class/net/dummy99
+wait_service_active both.service
+wait_service_active on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+
+ip link del dummy99
+udevadm wait --settle --timeout=30 --removed /sys/class/net/dummy99
+wait_service_inactive both.service
+wait_service_inactive on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+
+# StopWhenUnneeded=yes (single device, add and change event)
+ip link add dummy99 type dummy
+udevadm wait --settle --timeout=30 /sys/class/net/dummy99
+wait_service_active both.service
+wait_service_active on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+
+udevadm trigger --action=change --settle /sys/class/net/dummy99
+assert_rc 0 systemctl --quiet is-active both.service
+wait_service_inactive on-add.service
+wait_service_active on-change.service
+
+ip link del dummy99
+udevadm wait --settle --timeout=30 --removed /sys/class/net/dummy99
+wait_service_inactive both.service
+assert_rc 3 systemctl --quiet is-active on-add.service
+wait_service_inactive on-change.service
+
+# StopWhenUnneeded=yes (multiple devices, only add events)
+ip link add dummy99 type dummy
+udevadm wait --settle --timeout=30 /sys/class/net/dummy99
+wait_service_active both.service
+wait_service_active on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+
+ip link add dummy98 type dummy
+udevadm wait --settle --timeout=30 /sys/class/net/dummy98
+assert_rc 0 systemctl --quiet is-active both.service
+assert_rc 0 systemctl --quiet is-active on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+
+ip link del dummy99
+udevadm wait --settle --timeout=30 --removed /sys/class/net/dummy99
+assert_rc 0 systemctl --quiet is-active both.service
+assert_rc 0 systemctl --quiet is-active on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+
+ip link del dummy98
+udevadm wait --settle --timeout=30 --removed /sys/class/net/dummy98
+wait_service_inactive both.service
+wait_service_inactive on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+
+# StopWhenUnneeded=yes (multiple devices, add and change events)
+ip link add dummy99 type dummy
+udevadm wait --settle --timeout=30 /sys/class/net/dummy99
+wait_service_active both.service
+wait_service_active on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+
+ip link add dummy98 type dummy
+udevadm wait --settle --timeout=30 /sys/class/net/dummy98
+assert_rc 0 systemctl --quiet is-active both.service
+assert_rc 0 systemctl --quiet is-active on-add.service
+assert_rc 3 systemctl --quiet is-active on-change.service
+
+udevadm trigger --action=change --settle /sys/class/net/dummy99
+assert_rc 0 systemctl --quiet is-active both.service
+assert_rc 0 systemctl --quiet is-active on-add.service
+wait_service_active on-change.service
+
+ip link del dummy98
+udevadm wait --settle --timeout=30 --removed /sys/class/net/dummy98
+assert_rc 0 systemctl --quiet is-active both.service
+wait_service_inactive on-add.service
+assert_rc 0 systemctl --quiet is-active on-change.service
+
+ip link del dummy99
+udevadm wait --settle --timeout=30 --removed /sys/class/net/dummy99
+wait_service_inactive both.service
+assert_rc 3 systemctl --quiet is-active on-add.service
+wait_service_inactive on-change.service
+
+# cleanup
+rm -f /run/udev/rules.d/50-testsuite.rules
+udevadm control --reload
+
+rm -f /run/systemd/system/on-add.service
+rm -f /run/systemd/system/on-change.service
+systemctl daemon-reload
+
+exit 0