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The usual behaviour when a timeout expires is to terminate/kill the
service. This is what user usually want in production systems. To debug
services that fail to start/stop (especially sporadic failures) it
might be necessary to trigger the watchdog machinery and write core
dumps, though. Likewise, it is usually just a waste of time to
gracefully stop a stuck service. Instead it might save time to go
directly into kill mode.
This commit adds two new options to services: TimeoutStartFailureMode=
and TimeoutStopFailureMode=. Both take the same values and tweak the
behavior of systemd when a start/stop timeout expires:
* 'terminate': is the default behaviour as it has always been,
* 'abort': triggers the watchdog machinery and will send SIGABRT
(unless WatchdogSignal was changed) and
* 'kill' will directly send SIGKILL.
To handle the stop failure mode in stop-post state too a new
final-watchdog state needs to be introduced.
The fact that m->show_status was serialized/deserialized made impossible any
further customisation of this setting via system.conf. IOW the value was
basically always locked unless it was changed via signals.
This patch reworks the handling of m->show_status but also makes sure that if a
new value was changed via the signal API then this value is kept and preserved
accross PID1 reexecuting or reloading.
Note: this effectively means that once the value is set via the signal
interface, it can be changed again only through the signal API.
The name 'manager_get_show_status()' suggests that the function simply reads
the property 'show_status' of the manager and hence returns a 'StatusType'
value.
However it was doing more than that since it contained the logic (based on
'show_status' but also on the state of the manager) to figure out if status
message could be emitted to the console.
Hence this patch renames the function to 'manager_should_show_status()'. The
previous name will be reused in a later patch to effectively return the value
of 'show_status' property.
No functional change.
Single filesystem images are mounted from the /dev/block/X:Y symlink
rather than /dev/loopZ, so we need to wait for udev to create it or
mounting will be racy and occasionally fail.
After today's Arch Linux image update, there seems to be a slight change
in delay reporting which breaks some asserts in
systemd-networkd-tests.py:
Expected:
limit 100 delay 50.0ms 10.0ms loss 20%
Current:
limit 100 delay 50ms 10ms loss 20%
Actually, it is the same kind of problem as in d910f4c . Basically, we
need to return 1 on success code path in slice_freezer_action().
Otherwise we dispatch DBus return message too soon.
Fixes: #16050
Let's allow "-0" as alternative to "+0" and "0" when parsing integers,
unless the new SAFE_ATO_REFUSE_PLUS_MINUS flag is specified.
In cases where allowing the +/- syntax shall not be allowed
SAFE_ATO_REFUSE_PLUS_MINUS is the right flag to use, but this also means
that -0 as only negative integer that fits into an unsigned value should
be acceptable if the flag is not specified.
Note that run_test() calls coredumpctl in a loop because in certain
environments (1 vCPU unaccelerated QEMU VM) it might take quite a
while to process the coredump.
