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Let's preferably route traffic for reverse lookups to LLMNR/mDNS/DNS on
the matching interface if the IP address is in the local subnet. Also,
if looking up an IP address of our own host, let's avoid doing
LLMNR/mDNS at all.
This is useful if "~." is a routing domain to DNS, as it means, local
reverse lookups still go to LLMNR/mDNS, too.
Fixes: #16243#10081
Let's make things more debuggable: when debug logging is on, let's
say which client is asking for our services.
This is helpful for easily figuring out which local process might
interfere with your debugging sessions by issuing additional requests
while you try to debug a request (I am looking at you, geoclue!).
Let's introduce a new flag that indicates whether the response was
acquired in "confidential" mode, i.e. via encrypted DNS-over-TLS, or
synthesized locally.
Fixes: #12859
Let's use the same flags type we use for client communication, i.e.
instead of "bool answer_authenticated", let's use "uint64_t
answer_query_flags", with the SD_RESOLVED_AUTHENTICATED flag.
This is mostly just search/replace, i.e. a refactoring, no change in
behaviour.
This becomes useful once in a later commit SD_RESOLVED_CONFIDENTIAL is
added to indicate resolution that either were encrypted (DNS-over-TLS)
or never left the local system.
When low-level RR resolution is requested from "resolvectl query" via
"--type=" or "--class=" no search domain logic is applied and no IDNA
translation.
Explain this in detail in the documentation, and also mentions this when
users attempt to resolve single-label names or names with international
characters in the output.
I believe the current behaviour is correct, but it is indeed surprising.
Hence the documentation and output improvement.
Fixes: #11325#10737
The "socket graveyard" shall contain sockets we have sent a question out
of, but not received a reply. If we'd close thus sockets immediately
when we are not interested anymore, we'd trigger ICMP port unreachable
messages once we after all *do* get a reply. Let's avoid that, by
leaving the fds open for a bit longer, until a timeout is reached or a
reply datagram received.
Fixes: #17421
Numeric ifnames should be acceptable only if that's enabled by flag, and
refused otherwise. Hence, let's parse as ifindex first, and if that
works decide. Finally, let's refuse any numeric ifnames that are not
valid ifindexs, but look like them.
When a transaction fails and we decide to switch DNS servers, don#t do
so unconditionally. Check if the current DNS server is still the same as
when the transaction was initiated. And if not, do not do anything.
That should reduce the number of redundant DNS server switches if many
parallel transactions fail simultaneously (which is pretty likely if
DNSSEC is on).
Fixes: #17040
Let's reuse accept_link_local_reverse_lookups() at one more place, where
we check for the list of link local reverase address domains. Since we
don't actually accept the domains here (but rather the opposite, not
accept), let's rename the function a bit more generically with accept_ →
match_.
While we are at it invert the if branches, to make things more easily
understandable: filter out the unwatnted stuff and have the "all good"
state as main codepath.
This fixes a long-standing issue in packaging scriptlets: daemon-reload
was moved to the end of the transaction, but restarting services was still
straightaway after package installation.
https://bugzilla.redhat.com/show_bug.cgi?id=1614751
Note that daemon-reload is called twice. This wouldn't be hardly noticable,
except that now a bunch of units (at least in Fedora) generate very verbose
warnings about deprecated features. So we get those warnings twice…
reload-or-restart --needing-restart is also called twice, but the second call
is usually a noop, because the first clears the flag for restarted units. The
second call is necessary for the case where we only uninstall packages, and the
%transfiletriggerpostun trigger fires, but not the %transfiletriggerin
scriptlet.
Also note that this assumes that units are marked only for restart if paths
under @systemunitdir@ or /etc/systemd/system have been touched. I would prefer
make the trigger that does 'restart --needing-restart' fire always, but it
seems rpm doesn't have such functionality. (Except as a %transfiletrigger that
would trigger on "/*" to catch all transactions, but that seems ineffiecient
and ugly.)
P>1000000 is *before* "normal" scriptlets, P<1000000 is *after*. I think it
makes sense to do stuff like execution of sysctl/sysusers/tmpfiles configuration
before package scriptlets. I think that was the intent, but a single digit got
dropped ;(
Also, let's reorder the scriptlets in the file to match execution order, to
make it easier to see what is going on.
Most of those may happen in any order, but there are some exceptions:
tmpfiles should be after sysusers,
udevadm --reload should be after hwdb.
The trigger was initially written to use %transfiletriggerun instead
of %transfiletriggerpostun because the latter would not fire. It turned
out to a buffer overread in rpm that since has been long fixed:
https://bugzilla.redhat.com/show_bug.cgi?id=1284645f6521c50f6
Note that this goes both ways: in particular the lua version had udev
scriptlets in the wrong package, fixed in
3c9433d7cf.
Add missing "|| :" so the scriptlets never fail.
From https://src.fedoraproject.org/rpms/systemd/blob/master/f/triggers.systemd.
In 12dde791d5 scriptlets were converted to lua.
This is not only faster and cleaner, but also avoids a nasty dependency loop:
rpm implements the lua scripting internally, so we don't need a working shell
for the scriplets. This is nice and all, but unfortunately ostree wants to
capture scriptlets and execute them at a later time and does not support lua.
So in Fedora we ended up with a revert back to a shell-based implementation
[1]. At the time I hoped this would only be a temporary workaround, but three
years later I think it's fair to assume that this will not happen any time
soon. But carrying the upstream lua version and the downstream sh version is
error prone. So let's import the other version into our tree too so that they
can be kept in sync.
[1] 8e6b39457b
This is almost equivalent to 'busctl call-method org.freedesktop.systemd1
/org/freedesktop/systemd1 org.freedesktop.systemd1.Manager EnqueueMarkedJobs',
but waits for the jobs to finish.
We support two return types for methods that start jobs. EnqueueJob support the
full-monty mode with affected jobs. I didn't do this here, since it seems
unlikely to be used. In the common case there'd be a huge list of jobs and
affected jobs. EnqueueMarkedJobs() just returns a list of jobs that we can wait
upon.
The name of the method is generic in case we decide to add something other than
just reload/restart later on.
When errors occur, resource errors are treated as fatal, but for other error
types we queue up other jobs, and only return an error at the end. The
assumption is that the caller will ignore the result error anyway, so it's
better to try to reload/restart as much as possible.
The property is never set by systemd, only reset after a stop or restart or
reload. It may externally be set to mark the unit for a later restart/reload.
I wasn't sure whether to configure the property only for the types where this
makes sense (Service, Swap, etc). But Restart() method is defined on the unit,
and also having this always under the same property name is more convenient.
This reverts commit 58bc1735fe.
The ELN composes are quite unstable and take a while to refresh. Let's
drop them again and revisit this once they get more mature to reduce
the CI noise.
Let's suppress repeated stub queries coming in, to minimize resource
usage. Many DNS clients are pretty aggressive regarding repeating DNS
requests, hence let's find them and suppress the follow-ups should we
need more time to fulfill the queries.
The source package in the apt cache might be older than the
packaging from salsa.debian.org/systemd-team/systemd so it might not
list all the current binary packages.
This is currently the case for systemd-timesyncd, so TEST-30 fails.
Simply grep the control file rather than using apt-cache when iterating
over the packages contents.
