From 413f20b4ac328c239952472102771b430fdc1a2a Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Wed, 20 Jul 2022 16:56:25 +0900
Subject: [PATCH] test: add test case for mount unit dependencies

---
 test/units/testsuite-60.sh | 152 +++++++++++++++++++++++++++++++++++++
 1 file changed, 152 insertions(+)

diff --git a/test/units/testsuite-60.sh b/test/units/testsuite-60.sh
index 3c391c8efa6..c221b19c36e 100755
--- a/test/units/testsuite-60.sh
+++ b/test/units/testsuite-60.sh
@@ -3,6 +3,155 @@
 set -eux
 set -o pipefail
 
+# shellcheck source=test/units/assert.sh
+. "$(dirname "$0")"/assert.sh
+
+teardown_test_dependencies() (
+    set +eux
+
+    if mountpoint /tmp/deptest; then
+        umount /tmp/deptest
+    fi
+
+    if [[ -n "${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 "${LOOP}p1"
+    udevadm lock --device="${LOOP}p1" 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)"
@@ -108,6 +257,9 @@ fi
 # 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
 
-- 
2.47.3