systemd-systemctl: fix instance template WantedBy symlink construction

Fix issue of the below instance template systemd service dependency

[Install]
WantedBy=svc-wants@%i.service

creating the symlink (instance "a" example)

/etc/systemd/system/svc-wants@%i.service.wants/svc-wanted-by@a.service

which should be

/etc/systemd/system/svc-wants@a.service.wants/svc-wanted-by@a.service

as implemented by this change.

The functionality appears regressed just after "thud" baseline when the
logic was refactored from shell script into python (commit
925e30cb10)

(From OE-Core rev: 308397f0bb3d6f3d4e9ec2c6a10823184049c9b5)

Signed-off-by: Martin Siegumfeldt <mns@gomspace.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Martin Siegumfeldt
2023-04-28 08:59:33 +02:00
committed by Richard Purdie
parent 9ed46595f8
commit e510222b57

View File

@@ -195,12 +195,19 @@ class SystemdUnit():
raise SystemdUnitNotFoundError(self.root, unit)
def _process_deps(self, config, service, location, prop, dirstem):
def _process_deps(self, config, service, location, prop, dirstem, instance):
systemdir = self.root / SYSCONFDIR / "systemd" / "system"
target = ROOT / location.relative_to(self.root)
try:
for dependent in config.get('Install', prop):
# determine whether or not dependent is a template with an actual
# instance (i.e. a '@%i')
dependent_is_template = re.match(r"[^@]+@(?P<instance>[^\.]*)\.", dependent)
if dependent_is_template:
# if so, replace with the actual instance to achieve
# svc-wants@a.service.wants/svc-wanted-by@a.service
dependent = re.sub(dependent_is_template.group('instance'), instance, dependent, 1)
wants = systemdir / "{}.{}".format(dependent, dirstem) / service
add_link(wants, target)
@@ -240,8 +247,8 @@ class SystemdUnit():
else:
service = self.unit
self._process_deps(config, service, path, 'WantedBy', 'wants')
self._process_deps(config, service, path, 'RequiredBy', 'requires')
self._process_deps(config, service, path, 'WantedBy', 'wants', instance)
self._process_deps(config, service, path, 'RequiredBy', 'requires', instance)
try:
for also in config.get('Install', 'Also'):