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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)).
Adding --image parameter for verify verb using the dissect image functionality
-----------------------------------------------------------------------------------
Example Run:
I created a unit service file testrun.service with an invalid key-value pairing
(foo = bar) and a squashfs image run.raw to test the code.
maanya-goenka@debian:~/systemd (img-support)$ cat <<EOF>img/usr/lib/systemd/system/testrun.service
> [Unit]
> foo = bar
>
> [Service]
> ExecStart = /opt/script0.sh
> EOF
maanya-goenka@debian:~/systemd (img-support)$ mksquashfs img/ run.raw
Parallel mksquashfs: Using 4 processors
Creating 4.0 filesystem on run.raw, block size 131072.
[==============================================================================================================================|] 6/6 100%
Exportable Squashfs 4.0 filesystem, gzip compressed, data block size 131072
compressed data, compressed metadata, compressed fragments, compressed xattrs
duplicates are removed
Filesystem size 0.60 Kbytes (0.00 Mbytes)
52.32% of uncompressed filesystem size (1.14 Kbytes)
Inode table size 166 bytes (0.16 Kbytes)
43.01% of uncompressed inode table size (386 bytes)
Directory table size 153 bytes (0.15 Kbytes)
58.40% of uncompressed directory table size (262 bytes)
Number of duplicate files found 1
Number of inodes 12
Number of files 6
Number of fragments 1
Number of symbolic links 0
Number of device nodes 0
Number of fifo nodes 0
Number of socket nodes 0
Number of directories 6
Number of ids (unique uids + gids) 1
Number of uids 1
maanya-goenka (1000)
Number of gids 1
maanya-goenka (1000)
maanya-goenka@debian:~/systemd (img-support)$ sudo build/systemd-analyze verify --image=run.raw testrun.service
/tmp/.#systemd-analyzec71c7297a936b91c/usr/lib/systemd/system/testrun.service:2: Unknown key name 'foo' in section 'Unit', ignoring.
testrun.service: Failed to create testrun.service/start: Unit sysinit.target not found.
The 'Unit sysinit.target not found' error that we see here is due to recursive dependency searching during
unit loading and has been addressed in a different PR:
systemd-analyze: add option to return an error value when unit verification fails #20233
-------------------------------------------------------------------------------
Example Run:
foobar.service created below is a service unit file that has a non-existing key-value
pairing (foo = bar) and is thus, syntactically invalid.
maanya-goenka@debian:~/systemd (img-support)$ cat <<EOF>img/usr/lib/systemd/system/foobar.service
> [Unit]
> foo = bar
>
> [Service]
> ExecStart = /opt/script0.sh
> EOF
The failure to create foobar.service because of the recursive dependency searching and verification has been addressed
in a different PR: systemd-analyze: add option to return an error value when unit verification fails #20233
maanya-goenka@debian:~/systemd (img-support)$ sudo build/systemd-analyze verify --root=img/ foobar.service
/home/maanya-goenka/systemd/img/usr/lib/systemd/system/foobar.service:2: Unknown key name 'foo' in section 'Unit', ignoring.
foobar.service: Failed to create foobar.service/start: Unit sysinit.target not found.
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)
```
