2010-02-03 13:03:47 +01:00
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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2012-04-12 00:20:58 +02:00
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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2010-02-03 13:03:47 +01:00
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2012-04-12 00:20:58 +02:00
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Lesser General Public License for more details.
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2010-02-03 13:03:47 +01:00
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2012-04-12 00:20:58 +02:00
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You should have received a copy of the GNU Lesser General Public License
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2010-02-03 13:03:47 +01:00
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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2010-01-20 18:26:29 +01:00
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#include <errno.h>
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2015-11-16 22:09:36 +01:00
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#include <stdio.h>
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2010-01-20 18:26:29 +01:00
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#include <string.h>
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2014-01-07 14:41:24 +01:00
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#include "bus-util.h"
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2015-11-16 22:09:36 +01:00
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#include "manager.h"
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2016-04-08 18:54:05 +02:00
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#include "rm-rf.h"
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2015-12-02 04:35:16 +01:00
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#include "test-helper.h"
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2016-04-08 18:54:05 +02:00
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#include "tests.h"
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2010-01-20 18:26:29 +01:00
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int main(int argc, char *argv[]) {
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2016-05-20 15:08:24 +02:00
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_cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
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tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
2015-11-27 19:13:45 +01:00
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_cleanup_(sd_bus_error_free) sd_bus_error err = SD_BUS_ERROR_NULL;
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2010-01-20 18:26:29 +01:00
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Manager *m = NULL;
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2010-01-26 21:39:06 +01:00
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Unit *a = NULL, *b = NULL, *c = NULL, *d = NULL, *e = NULL, *g = NULL, *h = NULL;
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2014-01-07 14:41:24 +01:00
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FILE *serial = NULL;
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FDSet *fdset = NULL;
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2010-01-20 18:26:29 +01:00
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Job *j;
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2014-01-07 14:41:24 +01:00
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int r;
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2010-01-20 18:26:29 +01:00
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tests: when running a manager object in a test, migrate to private cgroup subroot first (#6576)
Without this "meson test" will end up running all tests in the same
cgroup root, and they all will try to manage it. Which usually isn't too
bad, except when they end up clearing up each other's cgroups. This race
is hard to trigger but has caused various CI runs to fail spuriously.
With this change we simply move every test that runs a manager object
into their own private cgroup. Note that we don't clean up the cgroup at
the end, we leave that to the cgroup manager around it.
This fixes races that become visible by test runs throwing out errors
like this:
```
exec-systemcallfilter-failing.service: Passing 0 fds to service
exec-systemcallfilter-failing.service: About to execute: /bin/echo 'This should not be seen'
exec-systemcallfilter-failing.service: Forked /bin/echo as 5693
exec-systemcallfilter-failing.service: Changed dead -> start
exec-systemcallfilter-failing.service: Failed to attach to cgroup /exec-systemcallfilter-failing.service: No such file or directory
Received SIGCHLD from PID 5693 ((echo)).
Child 5693 ((echo)) died (code=exited, status=219/CGROUP)
exec-systemcallfilter-failing.service: Child 5693 belongs to exec-systemcallfilter-failing.service
exec-systemcallfilter-failing.service: Main process exited, code=exited, status=219/CGROUP
exec-systemcallfilter-failing.service: Changed start -> failed
exec-systemcallfilter-failing.service: Unit entered failed state.
exec-systemcallfilter-failing.service: Failed with result 'exit-code'.
exec-systemcallfilter-failing.service: cgroup is empty
Assertion 'service->main_exec_status.status == status_expected' failed at ../src/src/test/test-execute.c:71, function check(). Aborting.
```
BTW, I tracked this race down by using perf:
```
# perf record -e cgroup:cgroup_mkdir,cgroup_rmdir
…
# perf script
```
Thanks a lot @iaguis, @alban for helping me how to use perf for this.
Fixes #5895.
2017-08-09 15:42:49 +02:00
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enter_cgroup_subroot();
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2014-01-07 14:41:24 +01:00
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/* prepare the test */
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2017-02-15 23:37:25 +01:00
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assert_se(set_unit_path(get_testdata_dir("")) >= 0);
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2017-02-14 22:33:52 +01:00
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assert_se(runtime_dir = setup_fake_runtime_dir());
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2017-09-16 11:19:43 +02:00
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r = manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_MINIMAL, &m);
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2015-12-02 04:35:16 +01:00
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if (MANAGER_SKIP_TEST(r)) {
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2016-09-12 20:55:34 +02:00
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log_notice_errno(r, "Skipping test: manager_new: %m");
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2014-01-07 14:41:24 +01:00
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return EXIT_TEST_SKIP;
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}
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2014-10-04 23:51:45 +02:00
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assert_se(r >= 0);
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2014-01-07 14:41:24 +01:00
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assert_se(manager_startup(m, serial, fdset) >= 0);
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2010-01-20 18:26:29 +01:00
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2010-01-21 02:59:12 +01:00
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printf("Load1:\n");
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2010-07-08 02:43:18 +02:00
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assert_se(manager_load_unit(m, "a.service", NULL, NULL, &a) >= 0);
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assert_se(manager_load_unit(m, "b.service", NULL, NULL, &b) >= 0);
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assert_se(manager_load_unit(m, "c.service", NULL, NULL, &c) >= 0);
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2010-01-26 21:39:06 +01:00
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manager_dump_units(m, stdout, "\t");
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2010-01-20 18:26:29 +01:00
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printf("Test1: (Trivial)\n");
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2015-11-12 19:52:31 +01:00
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r = manager_add_job(m, JOB_START, c, JOB_REPLACE, &err, &j);
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2014-01-07 14:41:24 +01:00
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if (sd_bus_error_is_set(&err))
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log_error("error: %s: %s", err.name, err.message);
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2014-10-04 23:51:45 +02:00
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assert_se(r == 0);
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2010-01-20 18:26:29 +01:00
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manager_dump_jobs(m, stdout, "\t");
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2010-01-21 02:59:12 +01:00
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printf("Load2:\n");
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2010-01-20 18:26:29 +01:00
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manager_clear_jobs(m);
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2010-07-08 02:43:18 +02:00
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assert_se(manager_load_unit(m, "d.service", NULL, NULL, &d) >= 0);
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assert_se(manager_load_unit(m, "e.service", NULL, NULL, &e) >= 0);
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2010-01-26 21:39:06 +01:00
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manager_dump_units(m, stdout, "\t");
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2010-01-20 18:26:29 +01:00
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printf("Test2: (Cyclic Order, Unfixable)\n");
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2015-11-12 19:52:31 +01:00
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assert_se(manager_add_job(m, JOB_START, d, JOB_REPLACE, NULL, &j) == -EDEADLK);
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2010-01-20 18:26:29 +01:00
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manager_dump_jobs(m, stdout, "\t");
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2010-01-21 00:51:37 +01:00
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printf("Test3: (Cyclic Order, Fixable, Garbage Collector)\n");
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2015-11-12 19:52:31 +01:00
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assert_se(manager_add_job(m, JOB_START, e, JOB_REPLACE, NULL, &j) == 0);
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2010-01-20 18:26:29 +01:00
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manager_dump_jobs(m, stdout, "\t");
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2010-01-21 00:51:37 +01:00
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printf("Test4: (Identical transaction)\n");
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2015-11-12 19:52:31 +01:00
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assert_se(manager_add_job(m, JOB_START, e, JOB_FAIL, NULL, &j) == 0);
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2010-01-21 00:51:37 +01:00
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manager_dump_jobs(m, stdout, "\t");
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2010-01-21 02:59:12 +01:00
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printf("Load3:\n");
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2010-07-08 02:43:18 +02:00
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assert_se(manager_load_unit(m, "g.service", NULL, NULL, &g) >= 0);
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2010-01-26 21:39:06 +01:00
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manager_dump_units(m, stdout, "\t");
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2010-01-21 00:51:37 +01:00
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printf("Test5: (Colliding transaction, fail)\n");
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2015-11-12 19:52:31 +01:00
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assert_se(manager_add_job(m, JOB_START, g, JOB_FAIL, NULL, &j) == -EDEADLK);
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2010-01-21 00:51:37 +01:00
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printf("Test6: (Colliding transaction, replace)\n");
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2015-11-12 19:52:31 +01:00
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assert_se(manager_add_job(m, JOB_START, g, JOB_REPLACE, NULL, &j) == 0);
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2010-01-21 00:51:37 +01:00
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manager_dump_jobs(m, stdout, "\t");
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2011-02-21 15:32:17 +01:00
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printf("Test7: (Unmergeable job type, fail)\n");
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2015-11-12 19:52:31 +01:00
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assert_se(manager_add_job(m, JOB_STOP, g, JOB_FAIL, NULL, &j) == -EDEADLK);
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2010-01-21 02:59:12 +01:00
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printf("Test8: (Mergeable job type, fail)\n");
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2015-11-12 19:52:31 +01:00
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assert_se(manager_add_job(m, JOB_RESTART, g, JOB_FAIL, NULL, &j) == 0);
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2010-01-21 02:59:12 +01:00
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manager_dump_jobs(m, stdout, "\t");
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2011-02-21 15:32:17 +01:00
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printf("Test9: (Unmergeable job type, replace)\n");
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2015-11-12 19:52:31 +01:00
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assert_se(manager_add_job(m, JOB_STOP, g, JOB_REPLACE, NULL, &j) == 0);
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2010-01-21 02:59:12 +01:00
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manager_dump_jobs(m, stdout, "\t");
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printf("Load4:\n");
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2010-07-08 02:43:18 +02:00
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assert_se(manager_load_unit(m, "h.service", NULL, NULL, &h) >= 0);
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2010-01-26 21:39:06 +01:00
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manager_dump_units(m, stdout, "\t");
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2010-01-21 02:59:12 +01:00
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2011-02-21 15:32:17 +01:00
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printf("Test10: (Unmergeable job type of auxiliary job, fail)\n");
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2015-11-12 19:52:31 +01:00
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assert_se(manager_add_job(m, JOB_START, h, JOB_FAIL, NULL, &j) == 0);
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2010-01-21 02:59:12 +01:00
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manager_dump_jobs(m, stdout, "\t");
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2010-01-20 18:26:29 +01:00
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manager_free(m);
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return 0;
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}
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