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resolved: enable synthesizing of A, AAAA and PTR records for "localhost"
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nss-myhostname: use LOOPBACK_IFINDEX instead of if_nametoindex("lo")
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There's no reason to explicitly turn off bus activation for resolved
here. The reason this was done before was that the code was copied from
nss-resolve, which has a fallback to glibc's nss-dns if resolved is not
reachable. However, such a logic makes no sense for resolve-host since
such a fallback doesn't make sense here, which means we can actually
turn on activation. Let's do it hence.
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sd-bus: do not connect to dbus-1 socket when kdbus is available
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We should never allow leaking of "localhost" queries onto the network,
even if there's an explicit domain rotue set for this.
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Let's make sure that clients querying resolved via the bus for A, AAAA
or PTR records for "localhost" get a synthesized, local reply, so that
we do not hit the network.
This makes part of nss-myhostname redundant, if used in conjunction.
However, given that nss-resolve shall be optional we need to keep this
code in both places for now.
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Given that we already hardocde the loopback ifindex, following the
kernel's own logic, we can replace the invocation of
if_nametoindex("lo") with LOOPBACK_IFINDEX.
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Since dacd6cee76a08331b8c8616c5f30f70ee49aa2f9 the two OOM's are
ignored as the value of r will be overwritten and we only log in
the fail section anyway.
This patch jumps to fail on OOM.
Note that this is different behavior compared to both the current
code and previous to dacd6cee76a08331b8c8616c5f30f70ee49aa2f9. Before
that commit we would log that saving the inhibit data failed, but
still write the file, though without the WHO/WHY section.
CID# 1313545
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sd-daemon: return EBADF for invalid fd numbers
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support reboot -f for kexec kernel
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treewide: trivial issues detected by smatch
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Fix error message:
-->--
Code should not be reached 'Unknown action.' at
src/systemctl/systemctl.c:6382, function halt_now(). Aborting.
Aborted
--<--
when executing 'reboot -f' from a system running a kexec kernel.
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add_automount() was only used on EFI systems, compile it conditionally
to avoid the warning.
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We should not fall back to dbus-1 and connect to the proxy when kdbus
returns an error that indicates that kdbus is running but just does not
accept new connections because of quota limits or something similar.
Using is_kdbus_available() in libsystemd/ requires it to move from
shared/ to libsystemd/.
Based on a patch from David Herrmann:
https://github.com/systemd/systemd/pull/886
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The partition-type flags are defined independently for every partition-type. Apply
them only to the types where they are defined, and not to the ESP, which does not
appear to share the same set of flags.
https://github.com/systemd/systemd/issues/920
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Coverity #1299013
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event cannot be NULL due to assert
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bus can never be NULL due to assert
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This matches what open(2) and other system functions do.
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Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
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https://bugzilla.redhat.com/show_bug.cgi?id=1251334
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Fix for #376, plus some other fixes
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This splits up the stopping logic for machines into two steps: first on
machine_stop() we begin with the shutdown of a machine by queuing the
stop method call for it. Then, in machine_finalize() we actually remove
the rest of its runtime context. This mimics closely how sessions are
handled in logind.
This also reworks the GC logic to strictly check the current state of
the machine unit, rather than shortcutting a few cases, like for example
assuming that UnitRemoved really means a machine is gone (which it isn't
since Reloading might trigger it, see #376).
Fixes #376.
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We never made use of it, let's get rid of it.
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Use mfree() where we can.
Drop unnecessary {}.
Drop unnecessary variable declarations.
Cast syscall invocations where explicitly don't care for the return
value to (void).
Reword a comment.
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If we get a weird signal, then we should log about it, but not return an
error, since sd-bus will not call us again then anymore, but for these
signals we match here we actually do want to be called on the next
invocation.
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The kernel nowadays sends these along, and that's OK, hence don't even
debug log about it, but completely ignore it.
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execute: don't fail if we create the runtime directory from two proce…
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simultaneously
If a service has both ExecStart= and ExecStartPost= set with
Type=simple, then it might happen that we have two children create the
runtime directory of a service (as configured with RuntimeDirectory=) at
the same time. Previously we did this with mkdir_safe() which will
create the dir only if it is missing, but if it already exists will at
least verify the access mode and ownership to match the right values.
This is problematic in this case, since it creates and then adjusts the
settings, thus it might happen that one child creates the directory with
root owner, another one then verifies it, and only afterwards the
directory ownership is fixed by the original child, while the second
child already failed.
With this change we'll now always adjust the access mode, so that we
know that it is right. In the worst case this means we adjust the
mode/ownership even though its unnecessary, but this should have no
negative effect.
https://bugzilla.redhat.com/show_bug.cgi?id=1226509
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The m->n_containers is index and has to be smaller than the array
size.
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The ->done callback in the unit's vtable might call into
unit_unwatch_bus_name() and corrupt memory by that.
Move the call down, and clean up the bus slot in case it hasn't been done
yet.
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The kernel may return EBADSLT if a reply slot cannot be found. Make sure
to ignore it just like we ignore EPERM (the comment still applies).
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Currently, PID1 installs an unfiltered NameOwnerChanged signal match, and
dispatches the signals itself. This does not scale, as right now, PID1
wakes up every time a bus client connects.
To fix this, install individual matches once they are requested by
unit_watch_bus_name(), and remove the watches again through their slot in
unit_unwatch_bus_name().
If the bus is not available during unit_watch_bus_name(), just store
name in the 'watch_bus' hashmap, and let bus_setup_api() do the installing
later.
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Coverity #1315324
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Manual merge of https://github.com/systemd/systemd/pull/751.
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All users are now setting lowercase=false.
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When the user requests to set hostname, and we are setting both
pretty and static hostnames, and the name is a valid FQDN, we
use it as the static hostname, and unset the pretty hostname.
The change is that a FQDN with a trailing dot is accepted and ignored.
https://bugzilla.redhat.com/show_bug.cgi?id=1238246
Lowercasing of the static name is not done anymore.
$ hostnamectl set-hostname Foobar.
=> static is "Foobar", pretty is "Foobar."
$ hostnamectl set-hostname Foobar.org.
=> static is "Foobar.org", pretty is unset
$ hostnamectl set-hostname Foobar.org..
=> static is "Foobar.org", pretty is "Foobar.org.."
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Tests are modified to check behaviour with relax and without relax.
New tests are added for hostname_cleanup().
Tests are moved a new file (test-hostname-util) because there's
now a bunch of them.
New parameter is not used anywhere, except in tests, so there should
be no observable change.
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tree-wide: do not return error codes as bool
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Follow-up for PR #877.
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