Merge pull request #236 from living-ip/fix/systemd-252-first-install

Handle systemd 252 first-install omissions

ops/install_gcp_leoclean_nosend_release.py

@@ -694,10 +694,14 @@ def _parse_properties(raw: bytes) -> dict[str, str]:
             separator == "=" and key in SERVICE_PROPERTIES and key not in value, "systemd property output was invalid"
         )
         value[key] = item
-    # systemd 252 omits EnvironmentFiles entirely when its string array is
-    # empty. A nonempty array is emitted and remains subject to the exact
-    # no-EnvironmentFile checks below.
+    # systemd 252 omits empty array/command properties. For a nonexistent
+    # service, there cannot be an effective command to conceal, so normalize
+    # the three omitted Exec* properties to their explicit empty form. Loaded
+    # units must still report every command property for exact verification.
     value.setdefault("EnvironmentFiles", "")
+    if value.get("LoadState") == "not-found":
+        for property_name in SERVICE_EXEC_PROPERTIES:
+            value.setdefault(property_name, "")
     _require(set(value) == set(SERVICE_PROPERTIES), "systemd property output was incomplete")
     return value
 

tests/test_gcp_leoclean_nosend_installer.py

@@ -118,6 +118,7 @@ class FakeHost:
         self.race_applied = False
         self.property_overrides: dict[str, str] = {}
         self.omitted_properties: set[str] = set()
+        self.not_found_omitted_properties: set[str] = set()
         self.not_found_security_defaults: dict[str, str] = {}
         self.unstable_readbacks = False
         self.show_count = 0
@@ -241,6 +242,7 @@ class FakeHost:
             f"{name}={value[name]}\n"
             for name in installer.SERVICE_PROPERTIES
             if name not in self.omitted_properties
+            and (loaded or name not in self.not_found_omitted_properties)
         ).encode()
         return subprocess.CompletedProcess(arguments, 0, stdout=payload, stderr=b"")
 
@@ -475,6 +477,28 @@ def test_systemd_252_omitted_environment_files_property_is_normalized(tmp_path:
     assert host.restart_calls == 1
 
 
+def test_systemd_252_omitted_not_found_commands_are_normalized(tmp_path: Path) -> None:
+    bundle, release, image = release_bundle(tmp_path, "2")
+    paths = install_paths(tmp_path)
+    host = FakeHost(paths)
+    host.add_release(release, image)
+    host.not_found_security_defaults = dict(PRODUCTION_SHAPED_NOT_FOUND_SECURITY)
+    host.not_found_omitted_properties.update({"EnvironmentFiles", *installer.SERVICE_EXEC_PROPERTIES})
+
+    receipt = installer.install_release(
+        bundle,
+        paths=paths,
+        source_binding=source_binding(),
+        runner=host,
+        sleeper=lambda _seconds: None,
+        execute_restart=True,
+    )
+
+    assert receipt["status"] == "pass"
+    assert receipt["release_sha256"] == release["release_sha256"]
+    assert host.restart_calls == 1
+
+
 def test_systemd_252_omission_does_not_hide_a_later_dropin(tmp_path: Path) -> None:
     bundle, release, image = release_bundle(tmp_path, "2")
     paths = install_paths(tmp_path)