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On certain systems the `install_libnss()` function might end up with an
empty list of libraries to install, which triggers an assertion in
`image_install()`:
```
I: Install libnss
..//test-functions: line 2721: 1: parameter null or not set
make: *** [Makefile:4: setup] Error 1
```
E.g.:
```
# LD_DEBUG=files getent passwd 2>&1 >/dev/null | sed -n '/calling init: .*libnss_/ {s!^.* /!/!; p}'
/lib64/libnss_sss.so.2
/lib64/libnss_systemd.so.2
# dnf -y remove sssd-client systemd-libs
# LD_DEBUG=files getent passwd 2>&1 >/dev/null | sed -n '/calling init: .*libnss_/ {s!^.* /!/!; p}'
<no output>
```
Let's handle this case gracefully.
Until now using the INTERACTIVE_DEBUG=yes stuff together with sanitizers
was almost impossible, since the console kept eating up our inputs or
not responding at all. After a painful day of debugging I noticed that
if we use a shell script in the initrd -> root transition, we might end up
with a plymouthd still running, which kept screwing with the tty.
E.g. with initrd -> wrapper -> systemd transition, where the `wrapper`
is a simple script:
```
exec -- /usr/lib/systemd/systemd "$@"
```
we'd end up with a stray plymouthd process after the bootup:
```
1 0 440 2 20 0 0 0 worker I ? 0:00 [kworker/5:2-ata_sff]
1 0 453 2 20 0 0 0 worker I ? 0:00 [kworker/9:2-rcu_gp]
5 0 456 1 20 0 7252 1960 do_epo S ? 0:00 @usr/sbin/plymouthd --mode=boot --pid-file=/run/plymouth/pid --attach-to-session
```
After killing it, the tty works finally as expected.
Set both timeouts to some reasonable values instead of just `infinity`
to provide some form of a safe-net in case the test goes haywire and the
environment didn't set the timeouts itself (like our CIs do).
to avoid scope clashing in case some previous test crashed and/or didn't
clean up properly. Currently all test machines are called `root`, since
the name is automagically derived from the container path (in this case
`/var/tmp/systemd-test.XXXXXX/root`).
E.g. (from Ubuntu CI):
```
[23:10:12] --x-- Running TEST-71-HOSTNAME --x--
make: Entering directory '/tmp/autopkgtest.5LjnBV/build.0mE/systemd/test/TEST-71-HOSTNAME'
+ make -C TEST-71-HOSTNAME setup run
TEST-71-HOSTNAME SETUP: test hostnamed
Reusing existing cached image /tmp/autopkgtest.5LjnBV/build.0mE/systemd/test/TEST-71-HOSTNAME/../default.img → /tmp/autopkgtest.5LjnBV/build.0mE/systemd/test/default.img
'/var/tmp/systemd-test.1yy2SS/default.img' -> '/tmp/autopkgtest.5LjnBV/build.0mE/systemd/test/default.img'
I: Masking supporting services
'/var/tmp/systemd-test.1yy2SS/root/etc/systemd/system/systemd-hwdb-update.service' -> '/dev/null'
'/var/tmp/systemd-test.1yy2SS/root/etc/systemd/system/systemd-journal-catalog-update.service' -> '/dev/null'
'/var/tmp/systemd-test.1yy2SS/root/etc/systemd/system/systemd-networkd.service' -> '/dev/null'
'/var/tmp/systemd-test.1yy2SS/root/etc/systemd/system/systemd-networkd.socket' -> '/dev/null'
'/var/tmp/systemd-test.1yy2SS/root/etc/systemd/system/systemd-resolved.service' -> '/dev/null'
TEST-71-HOSTNAME RUN: test hostnamed
+ env --unset=UNIFIED_CGROUP_HIERARCHY --unset=SYSTEMD_NSPAWN_UNIFIED_HIERARCHY timeout --foreground 1200 /bin/systemd-nspawn --register=no --kill-signal=SIGKILL --directory=/var/tmp/systemd-test.1yy2SS/root --setenv=SYSTEMD_UNIT_PATH=/usr/lib/systemd/tests/testdata/testsuite-71.units:/usr/lib/systemd/tests/testdata/units: /lib/systemd/systemd systemd.unit=testsuite.target systemd.wants=testsuite-71.service systemd.wants=end.service
Spawning container root on /var/tmp/systemd-test.1yy2SS/root.
Press ^] three times within 1s to kill container.
Failed to allocate scope: Unit root.scope already exists.
E: nspawn failed with exit code 1
```
Some tests (like TEST-02) set a multiline string to $KERNEL_APPEND
(which is a valid thing to do), unfortunately we'd use only the first
line of it and throw the rest away, e.g:
```
$ printf "%s" "$x"
hello
this is a multiline
kernel command line
$ read -ra out <<< "$x"
$ printf "%s" "${out[@]}"
hello
```
Let's use readarray/mapfile instead to avoid this:
```
$ readarray out <<< "$x"
$ printf "%s" "${out[@]}"
hello
this is a multiline
kernel command line
```
When an extension image has binaries they should match the host
architecture. Currently there is no way to specify this requirement.
Introduce an ARCHITECTURE field in the extension's release file that
may be set to prevent loading on the wrong host architecture.
Since this new field is introduced late, we don't want to make
specifying it mandatory as it would break existing sysext images.
See https://github.com/systemd/systemd/issues/24061
A sysext image that merely contains static binaries has no dependency
on the host distribution and should be able to be used anywhere.
Support the special '_any' value for the ID field in the extension to
opt-out of ID and VERSION_ID/SYSEXT_LEVEL matching.
See https://github.com/systemd/systemd/issues/24061
Since the library is dlopen()ed by libpthread and required during
pthread_exit()/pthread_cancel(), let's install it explicitly if available to
avoid unexpected fails in tests. This also consolidates all related
workarounds for this library across the test scripts.
Bash allows only one handler per signal, so let's overcome this
limitation by having one dedicated EXIT signal which runs all registered
handlers from all over the place.
so we can run TEST-24 under sanitizers as well.
Also, when at it, use the 'named-fields' sfdisk format to make the code
a bit more descriptive without needing a manual.
- use test_append_files() to install additional commands
- drop use of expect
- include assert.sh and use assertions at several places
- use timeout command at several places
- always use logind-test-user
- etc
since we delete the guest journals as part of the save_journal() step in
check_result_common(), making journal inaccessible from the custom check
hooks.
Let's detect & wrap binaries which are linked against systemd DSOs and
we're running under ASan, since otherwise running such binaries ends
with:
```
==633==ASan runtime does not come first in initial library list; you should either link runtime to your application or manually preload it with LD_PRELOAD.
```
Since we unset $LD_PRELOAD in the testsuite-* units (due to another
issue), let's store the path to the ASan DSO in another env variable, so
we can easily access it in the testsuite scripts when needed.
If rngd is included in the host initrd, QEMU guests need at least one source of
entropy otherwise rngd will refuse to start. Hence this patch enables the
virtio RNG device in QEMU guests (exposed as a HW RNG device available at
/dev/hwrng).
As a safety measure, the patch limits the data sent to the guest to 1KB per
second in order to not let the guest starve the host entropy.
We used both "qemu" and "QEMU", let's use the lower-case version everywhere
since it's also the name of the binary and the version that people are
most familiar with.
The stuff under test/ is not only for the integeration tests, but also
for various other test-related stuff, so adjust the docs a bit.
