Otherwise the get_testdata_dir() call fails if the source tree is under
/root (which is usually the case in CIs).
I got bitten by this after leaving the source tree under /root but moving the
$BUILD_DIR elsewhere. This used to work by accident, as load_testdata_env()
would try to read $BUILD_DIR/systemd-runtest.env, but would fail if the
$BUILD_DIR is also under /root and fall back to SYSTEMD_TEST_DATA
(/lib/systemd/tests/testdata), which usually exist as we install the just built
revision. However, if the $BUILD_DIR is outside of /root we'd read
$BUILD_DIR/systemd-runtest.env which contains
SYSTEMD_TEST_DATA=/path/to/source/tree/test and that source tree is not visible
once we overmount /root with tmpfs making the test fail:
/* test_run_tests_unprivileged */
Successfully forked off '(test-execute-unprivileged)' as PID 10672.
Changing mount flags / (MS_REMOUNT|MS_BIND "")...
Changing mount propagation / (MS_REC|MS_SHARED "")
Mounting tmpfs (tmpfs) on /dev/shm (MS_NOSUID|MS_NODEV "")...
Mounting tmpfs (tmpfs) on /root (MS_NOSUID|MS_NODEV "")...
Mounting tmpfs (tmpfs) on /tmp (MS_NOSUID|MS_NODEV "")...
Mounting tmpfs (tmpfs) on /var/tmp (MS_NOSUID|MS_NODEV "")...
Mounting tmpfs (tmpfs) on /var/lib (MS_NOSUID|MS_NODEV "")...
Mounting tmpfs (tmpfs) on /run/test-execute-unit-dir (MS_NOSUID|MS_NODEV "")...
ERROR: $SYSTEMD_TEST_DATA directory [/root/systemd/test] not accessible: No such file or directory
Assertion 'get_testdata_dir("test-execute/", &unit_dir) >= 0' failed at src/test/test-execute.c:1306, function prepare_ns(). Aborting.
(test-execute-unprivileged) terminated by signal ABRT.
We have this very similar code in various places, and it#s not entirely
obvious (since we want a prolonged timeout for the reload), hence unify
this at one place.
When running from the build directory systemd-detect-virt might not be installed,
so tell meson to set up the PATH accordingly to point to the build directory.
Fixes https://github.com/systemd/systemd/issues/28316
So the multiple-machines tests run last to avoid a race where the
checked signal would get ignored while the stub init is still processing
the previous signals:
[ 17.380417] testsuite-13.sh[376]: + machinectl reboot long-running long-running long-running
[ 17.389888] systemd-nspawn[495]: ++ touch /reboot
[ 17.390904] testsuite-13.sh[376]: + rm -f /var/lib/machines/long-running/trap
[ 17.393937] testsuite-13.sh[376]: + machinectl kill --signal=SIGTRAP --kill-whom=leader long-running
[ 17.408905] testsuite-13.sh[376]: + timeout 10 bash -c 'while ! test -e /var/lib/machines/long-running/trap; do sleep .5; done'
[ 27.413210] testsuite-13.sh[376]: + at_exit
...
[ 27.993376] testsuite-13.sh[373]: + echo 'Subtest /usr/lib/systemd/tests/testdata/units/testsuite-13.machinectl.sh failed'
glibc does not provide clone() on ia64, only clone2. But only as a
symbol in the shared library, there's no prototype in the gblic
headers, so we have to define it, copied from the manpage.
st_dev is not the same as dev_t, and on O32 architectures like
mipsel it's an unsigned long, but dev_t is still unsigned long long,
so they don't match and compilation fails:
../src/journal/cat.c: In function ‘run’:
../src/basic/format-util.h:46:19: error: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘long unsigned int’ [-Werror=format=]
46 | # define DEV_FMT "%" PRIu64
| ^~~
../src/journal/cat.c:168:34: note: in expansion of macro ‘DEV_FMT’
168 | if (asprintf(&s, DEV_FMT ":" INO_FMT, st.st_dev, st.st_ino) < 0)
| ^~~~~~~
In file included from ../src/systemd/sd-journal.h:20,
from ../src/journal/cat.c:11:
/usr/include/inttypes.h:105:41: note: format string is defined here
105 | # define PRIu64 __PRI64_PREFIX "u"
