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NO_BUILD=1 indicates that we want to test systemd from the local system and not
the one from the local build. Hence there should be no need to call
find-build-dir.sh when NO_BUID=1 especially since it's likely that the script
will fail to find a local build in this case.
This avoids find-build-dir.sh to emit 'Specify build directory with $BUILD_DIR'
message when NO_BUILD=1 and no local build can be found.
This introduces a behavior change though: systemd from the local system will
always be preferred when NO_BUILD=1 even if a local build can be found.
Depending on the timing, socat will either get ECONNREFUSED oder EPIPE
from systemd. The latter will cause it to exit(1) and subsequently the
test to fail.
We are not actually interested in the return code of socat though. The
test is supposed to check, whether rate limiting of a socket unit works
properly.
So ignore any failures from the socat invocation and instead check, if
test10.socket is in state "failed" with result "trigger-limit-hit" after
it has been triggered.
TriggerLimitIntervalSec= by default is set to 2s. A "sleep 10" should
give systemd enough time even on slower machines, to reach the trigger
limit.
For better readability, break the test into separate ExecStart lines.
Fixes#19154.
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)
```
When `linux-headers` is installed on Arch Linux, it stores the module
source tree in the kernel module directory, which is then picked up by
`find` and we get a lot of harmless but annoying errors:
```
...
modprobe: FATAL: Module Kconfig.iosched not found in directory /lib/modules/5.13.7-arch1-1
modprobe: FATAL: Module Kconfig not found in directory /lib/modules/5.13.7-arch1-1
modprobe: FATAL: Module Kconfig not found in directory /lib/modules/5.13.7-arch1-1
modprobe: FATAL: Module dm-mpath.h not found in directory /lib/modules/5.13.7-arch1-1
modprobe: FATAL: Module dm-bio-prison-v2.h not found in directory /lib/modules/5.13.7-arch1-1
modprobe: FATAL: Module raid0.h not found in directory /lib/modules/5.13.7-arch1-1
...
```
Let's fix this by trying to install only kernel modules (*.ko files with
an optional compression).
We still sometimes try to grep an empty strace log because strace is not
yet properly initialized. Let's make the check a bit clever and wait
until strace is attached to PID 1 by checking the `TracerPid` field in
`/proc/1/status`.
Sometimes the ldconfig.service might take a bit longer to finish,
causing spurious test timeouts:
```
[ 1025.858923] systemd[24]: ldconfig.service: Executing: /sbin/ldconfig -X
...
[ 1043.883620] systemd[1]: ldconfig.service: Main process exited, code=exited, status=0/SUCCESS (success)
...
Trying to halt container. Send SIGTERM again to trigger immediate
termination.
Container TEST-52-HONORFIRSTSHUTDOWN terminated by signal KILL.
E: Test timed out after 20s
```
Let's unify handling of the boolean values throughout the test-functions
code, since we use 0/1, true/false, and yes/no almost randomly in many
places, so picking the right values during CI configuration can be a real
pain.
Saving the journal for passing tests creates a huge amount of unneeded
data stored for each full test run. Add a env var to allow saving the
journal only for failed tests.
This reverts commit cb0e818f7c.
After this was merged, some design and implementation issues were discovered,
see the discussion in #18782 and #19385. They certainly can be fixed, but so
far nobody has stepped up, and we're nearing a release. Hopefully, this feature
can be merged again after a rework.
Fixes#19345.
Due to a little misunderstanding the last patch doesn't work as
expected, since test_create_image() is called only for the first image
(usually TEST-01-BASIC), and all subsequent images are then (possibly)
modified with test_append_files().
Follow-up to 179ca4d2b1.
