test/units/TEST-63-PATH.sh

   1 #!/usr/bin/env bash
   2 # SPDX-License-Identifier: LGPL-2.1-or-later
   3 set -ex
   4 set -o pipefail
   5
   6 # shellcheck source=test/units/util.sh
   7 . "$(dirname "$0")"/util.sh
   8
   9 systemctl log-level debug
  10
  11 # Test that a path unit continuously triggering a service that fails condition checks eventually fails with
  12 # the trigger-limit-hit error.
  13 rm -f /tmp/nonexistent
  14 systemctl start test63.path
  15 touch /tmp/test63
  16
  17 # Make sure systemd has sufficient time to hit the trigger limit for test63.path.
  18 # shellcheck disable=SC2016
  19 timeout 30 bash -c 'until test "$(systemctl show test63.path -P ActiveState)" = failed; do sleep .2; done'
  20 test "$(systemctl show test63.service -P ActiveState)" = inactive
  21 test "$(systemctl show test63.service -P Result)" = success
  22 test "$(systemctl show test63.path -P Result)" = trigger-limit-hit
  23
  24 # Test that starting the service manually doesn't affect the path unit.
  25 rm -f /tmp/test63
  26 systemctl reset-failed
  27 systemctl start test63.path
  28 systemctl start test63.service
  29 test "$(systemctl show test63.service -P ActiveState)" = inactive
  30 test "$(systemctl show test63.service -P Result)" = success
  31 test "$(systemctl show test63.path -P ActiveState)" = active
  32 test "$(systemctl show test63.path -P Result)" = success
  33
  34 # Test that glob matching works too, with $TRIGGER_PATH
  35 systemctl start test63-glob.path
  36 touch /tmp/test63-glob-foo
  37 timeout 60 bash -c 'until systemctl -q is-active test63-glob.service; do sleep .2; done'
  38 test "$(systemctl show test63-glob.service -P ActiveState)" = active
  39 test "$(systemctl show test63-glob.service -P Result)" = success
  40
  41 test "$(busctl --json=short get-property org.freedesktop.systemd1 /org/freedesktop/systemd1/unit/test63_2dglob_2eservice org.freedesktop.systemd1.Unit ActivationDetails)" = '{"type":"a(ss)","data":[["trigger_unit","test63-glob.path"],["trigger_path","/tmp/test63-glob-foo"]]}'
  42
  43 systemctl stop test63-glob.path test63-glob.service
  44
  45 test "$(busctl --json=short get-property org.freedesktop.systemd1 /org/freedesktop/systemd1/unit/test63_2dglob_2eservice org.freedesktop.systemd1.Unit ActivationDetails)" = '{"type":"a(ss)","data":[]}'
  46
  47 # tests for issue https://github.com/systemd/systemd/issues/24577#issuecomment-1522628906
  48 rm -f /tmp/hoge
  49 systemctl start test63-issue-24577.path
  50 systemctl status -n 0 test63-issue-24577.path
  51 systemctl status -n 0 test63-issue-24577.service || :
  52 systemctl list-jobs
  53 output=$(systemctl list-jobs --no-legend)
  54 assert_not_in "test63-issue-24577.service" "$output"
  55 assert_not_in "test63-issue-24577-dep.service" "$output"
  56
  57 touch /tmp/hoge
  58 systemctl status -n 0 test63-issue-24577.path
  59 systemctl status -n 0 test63-issue-24577.service || :
  60 systemctl list-jobs
  61 output=$(systemctl list-jobs --no-legend)
  62 assert_in "test63-issue-24577.service" "$output"
  63 assert_in "test63-issue-24577-dep.service" "$output"
  64
  65 # even if the service is stopped, it will be soon retriggered.
  66 systemctl stop test63-issue-24577.service
  67 systemctl status -n 0 test63-issue-24577.path
  68 systemctl status -n 0 test63-issue-24577.service || :
  69 systemctl list-jobs
  70 output=$(systemctl list-jobs --no-legend)
  71 assert_in "test63-issue-24577.service" "$output"
  72 assert_in "test63-issue-24577-dep.service" "$output"
  73
  74 rm -f /tmp/hoge
  75 systemctl stop test63-issue-24577.service
  76 systemctl status -n 0 test63-issue-24577.path
  77 systemctl status -n 0 test63-issue-24577.service || :
  78 systemctl list-jobs
  79 output=$(systemctl list-jobs --no-legend)
  80 assert_not_in "test63-issue-24577.service" "$output"
  81 assert_in "test63-issue-24577-dep.service" "$output"
  82
  83 # Test for race condition fixed by https://github.com/systemd/systemd/pull/30768
  84 # Here's the schedule of events that we to happen during this test:
  85 #       (This test)                     (The service)
  86 #                                       .path unit monitors /tmp/copyme for changes
  87 #       Take lock on /tmp/noexeit       ↓
  88 #       Write to /tmp/copyme            ↓
  89 #       Wait for deactivating           Started
  90 #       ↓                               Copies /tmp/copyme to /tmp/copied
  91 #       ↓                               Tells manager it's shutting down
  92 #       Ensure service did the copy     Tries to lock /tmp/noexit and blocks
  93 #       Write to /tmp/copyme            ↓
  94 #
  95 # Now at this point the test can diverge. If we regress, this second write is
  96 # missed and we'll see:
  97 #       ... (second write)              ... (blocked)
  98 #       Drop lock on /tmp/noexit        ↓
  99 #       Wait for service to do copy     Unblocks and exits
 100 #       ↓                               (dead)
 101 #       ↓
 102 #       (timeout)
 103 #       Test fails
 104 #
 105 # Otherwise, we'll see:
 106 #       ... (second write)              ... (blocked)
 107 #       Drop lock on /tmp/noexit        ↓ and .path unit queues a new start job
 108 #       Wait for service to do copy     Unblocks and exits
 109 #       ↓                               Starts again b/c of queued job
 110 #       ↓                               Copies again
 111 #       Test Passes
 112 systemctl start test63-pr-30768.path
 113 exec {lock}<>/tmp/noexit
 114 flock -e $lock
 115 echo test1 > /tmp/copyme
 116 # shellcheck disable=SC2016
 117 timeout 30 bash -c 'until test "$(systemctl show test63-pr-30768.service -P ActiveState)" = deactivating; do sleep .2; done'
 118 diff /tmp/copyme /tmp/copied
 119 echo test2 > /tmp/copyme
 120 exec {lock}<&-
 121 timeout 30 bash -c 'until diff /tmp/copyme /tmp/copied >/dev/null; do sleep .2; done'
 122
 123 systemctl log-level info
 124
 125 touch /testok