All units in units/ follow this pattern, as do all other generators that we
provide. The question of the order was raised in
https://github.com/systemd/zram-generator/pull/90#discussion_r684965984,
and I think it's nice to make it consistent everywhere
(What= before Where= matches mount(8) and fstab(5)).
Previously, when UUID is requested for DUID, then the clients are
configured in callback of bus methods.
But now, 'request queue' was implemented, so we can use it to wait until
the product UUID is obtained.
Then, link_acquire_dynamic_conf() matches link_stop_engines().
Previously, LLDP client is started on interface is up, and stopped
on both down and carrier loss.
Previously, link was reconfigured with `link_carrier_reset()`, but it
just re-request to configure static addresses, routes, etc, and restart
engines (e.g. DHCP client).
However, after coming back from sleep, several link information may be
changed, especially the wifi access point may be different. So, we may
need to reconfigure the interface.
When boot ArchLinux from Ventoy, it always print `Failed to open random seed file: write protected.`
As Ventoy emulate the ISO file as a read-only CDROM, I didn't test with a real physical CDROM drive, but maybe it also has such problem.
As we use `EFI_FILE_MODE_WRITE` to open the `loader\random-seed` file, so I think it's better to check the result with both `EFI_WRITE_PROTECTED` and `EFI_NOT_FOUND`.
Skip a harmless error when running the tests on a system with a significantly
older systemd version (ldd tries to resolve the unprefixed RPATH for libsystemd.so.0,
which is in this case older than the already installed libsystemd.so.0 in $initdir).
The issue is triggered by installing test dependencies in install_missing_libraries().
Spotted on CentOS 8.
```
$ ldd /var/tmp/systemd-test.nZO11F/root/lib/systemd/tests/test-sd-device-thread
/var/tmp/systemd-test.nZO11F/root/lib/systemd/tests/test-sd-device-thread: /lib64/libsystemd.so.0: version `LIBSYSTEMD_240' not found (required by /var/tmp/systemd-test.nZO11F/root/lib/systemd/tests/test-sd-device-thread)
linux-vdso64.so.1 (0x00007fffb79d0000)
libclang_rt.asan-powerpc64le.so => /usr/lib64/clang/11.0.0/lib/linux/libclang_rt.asan-powerpc64le.so (0x00007fffb6ef0000)
libsystemd.so.0 => /lib64/libsystemd.so.0 (0x00007fffb6d20000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fffb6cd0000)
libc.so.6 => /lib64/libc.so.6 (0x00007fffb6ab0000)
$ LD_LIBRARY_PATH=/var/tmp/systemd-test.nZO11F/root/lib64/ ldd /var/tmp/systemd-test.nZO11F/root/lib/systemd/tests/test-sd-device-thread
linux-vdso64.so.1 (0x00007fffaba80000)
libclang_rt.asan-powerpc64le.so => /usr/lib64/clang/11.0.0/lib/linux/libclang_rt.asan-powerpc64le.so (0x00007fffaafa0000)
libsystemd.so.0 => /var/tmp/systemd-test.nZO11F/root/lib64/libsystemd.so.0 (0x00007fffaa5f0000)
libpthread.so.0 => /var/tmp/systemd-test.nZO11F/root/lib64/libpthread.so.0 (0x00007fffaa5a0000)
libc.so.6 => /var/tmp/systemd-test.nZO11F/root/lib64/libc.so.6 (0x00007fffaa380000)
```
Yu Watanabe
Zbigniew Jędrzejewski-Szmek
Lennart Poettering
Tianlu Shao
svonohr
Frantisek Sumsal
Dimitry Ishenko
Albert Brox
longpanda
StefanBruens
GnunuX