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In NetworkdBridgeTests.test_bridge_configure_without_carrier of
systemd-networkd-tests.py
```
bridge99: MAC address: 2e:3a:ec:4d:d3:62
Assertion 'sd_ipv4ll_is_running(ll) == 0' failed at src/libsystemd-network/sd-ipv4ll.c:110, function int sd_ipv4ll_set_mac(sd_ipv4ll *, const struct ether_addr *)(). Ignoring.
bridge99: Could not update MAC address in IPv4LL client: Device or resource busy
```
Since commit 883eb9be98, vconsole-setup might be
called again to operate on dummy console where font operations are not
supported but where it's still important to have the correct keymap set [0][1].
vconsole-setup is mainly called by udev but can also be run via a dependency of
an early service. Both cases might end up calling vconsole-setup on the dummy
console.
The first case can happen during early boot even on systems that use (instead
of the dummy console) a "simple" video console driver supporting font
operations (such as vgacon) until a more specific driver (such as i915) takes
the console over. While this is happening vgacon is deactivated and temporarly
replaced by the dummy console [2].
There are also other cases where systemd-vconsole-setup might be called on
dummy console especially during (very) early boot. Indeed
systemd-vconsole-setup.service might be pulled in by early interactive services
such as 'dracut-cmdline-ask.service` which is run before udev.
If that happens on platforms with no grapical HWs (such as embedded ARM) or
with dummy console initially installed until a driver takes over (like Xen and
xen-fbfront) then setting font will fail.
Therefore this patch downgrades the log message emitted when setting font fails
to LOG_DEBUG and when font operations is not implemented like it's the case for
the dummy console.
Fixes: #16406.
[0] https://github.com/systemd/systemd/issues/10826
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1652473
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/vga/vgaarb.c?h=v5.7#n204
When sd_netlink_call_async() timed out, then we reply the synthetic
error message, but it was not sealed. So, reading the message causes
the following assertion:
```
Assertion 'm->sealed' failed at src/libsystemd/sd-netlink/netlink-message.c:652, function netlink_message_read_internal(). Ignoring.
```
sd_netlink_message_set_flags is called without NLM_F_ACK which results in
a timeout while networkd is waiting for an ACK that the kernel will never send.
This changes the code to allow looking at multiple files with different
prefixes, but uses "/etc" and "/usr/lib". rpm-ostree uses
/usr/lib/{passwd,group} with nss-altfiles. I see no harm in simply trying both
paths on all systems.
Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1857530.
A minor memory leak is fixed: hashmap_put() returns -EEXIST is the key is
present *and* and the value is different. It return 0 if the value is the
same. Thus, we would leak the user/group name if it was specified multiple
times with the same uid/gid. I opted to remove the warning message completely:
with multiple files it is reasonable to have the same name defined more than
once. But even with one file the warning is dubious: all tools that read those
files deal correctly with duplicate entries and we are not writing a linter.
The test binary has two modes: in the default argument-less mode, it
just checks that "root" can be resolved. When invoked manually, a root
prefix and user/group names can be specified.
When renaming a network interface, the new name may be used as an
alternative name. In that case, let's swap the current name and the
alternative name. That is, first drop the new name from the list of
alternative names, then rename the interface, finally set the old name
as an alternative name.
This is all confusing as hell, becuase in some places lowercase hexadecimal
digits are used, and in other places uppercase. This adds a check for the
most common case that we and others got wrong.
I tried to extend the general grammar in hwdb_grammar() to include this check,
but it quickly became very complicated and didn't seem to work properly. Doing
initial parsing with more general rules is easier and also seems to give better
error messages:
/home/zbyszek/src/systemd-work/build/../hwdb.d/60-autosuspend.hwdb: 3 match groups, 5 matches, 3 properties
Pattern 'v058fp9540*' is invalid: Expected W:(0123...), found 'f' (at char 4), (line:1, col:5)
