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.
Since c6552ad we now try to collect coverage even in situations where
it's basically impossible (like in test-mount-util where the whole / is
mounted as read-only). As dealing with this is not worth the trouble,
let's ignore the missing coverage errors thrown by gcov in such cases.
Add tests for enrolling and unlocking. Various cases are tested:
- Default PCR 7 policy w/o PIN, good and bad cases (wrong PCR)
- PCR 7 + PIN policy, good and bad cases (wrong PCR, wrong PIN)
- Non-default PCR 0+7 policy w/o PIN, good and bad cases (wrong PCR 0)
v2: rename test, fix tss2 library installation, fix CI failures
v3: fix ppc64, load module
IIUC, pipefail doesn't matter for a sequence of commands joined with &&, and we
don't have any pipes. And such a failing expression also does not trigger an
exit, so the set +e/set -e were noops.
It should make it easier to figure out what exactly services do there.
For example, with SYSTEMD_LOG_LEVEL=debug userdbd (v249) prints
```
varlink-5: New incoming message: {"method":"io.systemd.UserDatabase.GetUserRecord","parameters":{}}
```
before it crashes and systemd-resolved prints
```
varlink-21: New incoming message: {"method":"io.systemd.Resolve.ResolveAddress","parameters":{"address":[127,0,0,1],"flags":0,"ifindex":1000000,"family":0}}
```
and those messages are helpful (especially when scripts causing them
aren't clever enough to keep track of random stuff they send to systemd
:-))
otherwise units using `DynamicUser=yes` won't be able to write the
coverage stats (currently affecting TEST-20-MAINPIDGAMES).
`DynamicUser=yes` implies `ProtectSystem=strict` and
`ProtectHome=read-only` and can't be overridden hence we need to
utilize `ReadWritePaths=` to work around that.
If the test logs contain lines like:
```
...systemd-resolved[735885]: profiling:/systemd-meson-build/src/shared/libsystemd-shared-250.a.p/base-filesystem.c.gcda:Cannot open
```
it means we're possibly missing some coverage since gcov can't write the stats,
usually due to the sandbox being too restrictive (e.g. ProtectSystem=yes,
ProtectHome=yes) or the $BUILD_DIR being inaccessible to non-root users.
If we're built with `-Dportable=false`, the portable profiles won't get
installed into the image. Since we need only the profile files and
nothing else, let's copy them into the image explicitly in such case.
A bind mount is added directly from private on the host to the actual
destination directory, no need for the symlinks (which cannot be created
as the bind mount happens first and creates the target as an actual directory)
Fixes https://github.com/systemd/systemd/issues/22264
Wraps nspawn to be able to use pexpect. The test logs in on the console
and runs screen. In one screen window it types in shutdown commands and
checks whether a wall message was sent to the other.
19:50:59 F: Missing a shared library required by /var/tmp/systemd-test.NIPT2q/root/lib/systemd/libsystemd-core-250.so.
19:50:59 F: Run "ldd /var/tmp/systemd-test.NIPT2q/root/lib/systemd/libsystemd-core-250.so" to find out what it is.
19:50:59 F: libsystemd-shared-250.so => not found
19:50:59 F: Cannot create a test image.
Writing a byte to test10.socket is actually the root cause of issue #19154:
depending on the timing, it's possible that PID1 closes the socket before socat
(or nc, it doesn't matter which tool is actually used) tries to write that one
byte to the socket. In this case writing to the socket returns EPIPE, which
causes socat to exit(1) and subsequently make the test fail.
Since we're only interested in connecting to the socket and triggering the rate
limit of the socket, this patch removes the parts that write the single byte to
the socket, which should remove the race for good.
Since it shouldn't matter whether the test uses socat or nc, let's switch back
to nc and hence remove the sole user of socat. The exit status of nc is however
ignored because some versions might choke when the socket is closed
unexpectedly.
In order to avoid inflating the dependency list for the core
library, use dlopen when inspecting elfs, since it's only
used in two non-core executables.
so we can run TEST-46 under sanitizers once again.
`systemd-homed` runs fsck on home directories, which reports a memory
leak we're not interested in. Let's introduce an LSan suppression file
to get around this. Since the patterns in the suppression file are
matched using basic substring match[0], they're a bit cumbersome, but
should get the work one.
[0] https://github.com/google/sanitizers/wiki/AddressSanitizerLeakSanitizer#suppressions
Example leaks (as reported by TEST-46):
```
systemd-homed[1333]: =================================================================
systemd-homed[1333]: ==1333==ERROR: LeakSanitizer: detected memory leaks
systemd-homed[1333]: Direct leak of 24 byte(s) in 1 object(s) allocated from:
systemd-homed[1333]: #0 0x7f0c8facccd1 in calloc (/usr/lib/clang/12.0.1/lib/linux/libclang_rt.asan-x86_64.so+0xf4cd1)
systemd-homed[1333]: #1 0x558d9494ff67 (/usr/bin/fsck+0x3f67)
systemd-homed[1333]: Direct leak of 6 byte(s) in 1 object(s) allocated from:
systemd-homed[1333]: #0 0x7f0c8fa906c1 in strdup (/usr/lib/clang/12.0.1/lib/linux/libclang_rt.asan-x86_64.so+0xb86c1)
systemd-homed[1333]: #1 0x558d949518fd (/usr/bin/fsck+0x58fd)
systemd-homed[1333]: SUMMARY: AddressSanitizer: 30 byte(s) leaked in 2 allocation(s).
systemd-homed[1337]: ==1337==WARNING: Symbolizer was blocked from starting itself!
systemd-homed[1337]: =================================================================
systemd-homed[1337]: ==1337==ERROR: LeakSanitizer: detected memory leaks
systemd-homed[1337]: Direct leak of 67584 byte(s) in 1 object(s) allocated from:
systemd-homed[1337]: #0 0x7f01edb84b19 (/usr/lib/clang/12.0.1/lib/linux/libclang_rt.asan-x86_64.so+0xf4b19)
systemd-homed[1337]: #1 0x7f01e8326829 (/usr/bin/../lib/libLLVM-12.so+0xb46829)
systemd-homed[1337]: SUMMARY: AddressSanitizer: 67584 byte(s) leaked in 1 allocation(s).
```
With the suppression file:
```
systemd-homed[1339]: -----------------------------------------------------
systemd-homed[1339]: Suppressions used:
systemd-homed[1339]: count bytes template
systemd-homed[1339]: 2 30 /bin/fsck$
systemd-homed[1339]: -----------------------------------------------------
systemd-homed[1343]: ==1343==WARNING: Symbolizer was blocked from starting itself!
systemd-homed[1343]: -----------------------------------------------------
systemd-homed[1343]: Suppressions used:
systemd-homed[1343]: count bytes template
systemd-homed[1343]: 1 67584 /lib/libLLVM
systemd-homed[1343]: -----------------------------------------------------
```
Depending on the location of the original build dir, either ProtectHome=
or ProtectSystem= may get in the way when creating the gcov metadata
files.
Follow-up to:
* 02d7e73013
* 6c9efba677
Otherwise we miss quite a lot of coverage (mainly from logind,
hostnamed, networkd, and possibly others), since they can't write their
reports with `ProtectSystem=strict`.
If -Db_coverage=true is used at build time, then ARTIFACT_DIRECTORY/TEST-XX-FOO.coverage-info
files are created with code coverage data, and run-integration-test.sh also
merges them into ARTIFACT_DIRECTORY/merged.coverage-info since the coveralls.io
helpers accept only a single file.
