src/test/test-watch-pid.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include "log.h"
   4 #include "manager.h"
   5 #include "rm-rf.h"
   6 #include "service.h"
   7 #include "test-helper.h"
   8 #include "tests.h"
   9
  10 int main(int argc, char *argv[]) {
  11         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
  12         _cleanup_(manager_freep) Manager *m = NULL;
  13         Unit *a, *b, *c, *u;
  14         int r;
  15
  16         test_setup_logging(LOG_DEBUG);
  17
  18         if (getuid() != 0)
  19                 return log_tests_skipped("not root");
  20         r = enter_cgroup_subroot();
  21         if (r == -ENOMEDIUM)
  22                 return log_tests_skipped("cgroupfs not available");
  23
  24         assert_se(set_unit_path(get_testdata_dir()) >= 0);
  25         assert_se(runtime_dir = setup_fake_runtime_dir());
  26
  27         assert_se(manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_BASIC, &m) >= 0);
  28         assert_se(manager_startup(m, NULL, NULL) >= 0);
  29
  30         assert_se(a = unit_new(m, sizeof(Service)));
  31         assert_se(unit_add_name(a, "a.service") >= 0);
  32         assert_se(set_isempty(a->pids));
  33
  34         assert_se(b = unit_new(m, sizeof(Service)));
  35         assert_se(unit_add_name(b, "b.service") >= 0);
  36         assert_se(set_isempty(b->pids));
  37
  38         assert_se(c = unit_new(m, sizeof(Service)));
  39         assert_se(unit_add_name(c, "c.service") >= 0);
  40         assert_se(set_isempty(c->pids));
  41
  42         assert_se(hashmap_isempty(m->watch_pids));
  43         assert_se(manager_get_unit_by_pid(m, 4711) == NULL);
  44
  45         assert_se(unit_watch_pid(a, 4711, false) >= 0);
  46         assert_se(manager_get_unit_by_pid(m, 4711) == a);
  47
  48         assert_se(unit_watch_pid(a, 4711, false) >= 0);
  49         assert_se(manager_get_unit_by_pid(m, 4711) == a);
  50
  51         assert_se(unit_watch_pid(b, 4711, false) >= 0);
  52         u = manager_get_unit_by_pid(m, 4711);
  53         assert_se(u == a || u == b);
  54
  55         assert_se(unit_watch_pid(b, 4711, false) >= 0);
  56         u = manager_get_unit_by_pid(m, 4711);
  57         assert_se(u == a || u == b);
  58
  59         assert_se(unit_watch_pid(c, 4711, false) >= 0);
  60         u = manager_get_unit_by_pid(m, 4711);
  61         assert_se(u == a || u == b || u == c);
  62
  63         assert_se(unit_watch_pid(c, 4711, false) >= 0);
  64         u = manager_get_unit_by_pid(m, 4711);
  65         assert_se(u == a || u == b || u == c);
  66
  67         unit_unwatch_pid(b, 4711);
  68         u = manager_get_unit_by_pid(m, 4711);
  69         assert_se(u == a || u == c);
  70
  71         unit_unwatch_pid(b, 4711);
  72         u = manager_get_unit_by_pid(m, 4711);
  73         assert_se(u == a || u == c);
  74
  75         unit_unwatch_pid(a, 4711);
  76         assert_se(manager_get_unit_by_pid(m, 4711) == c);
  77
  78         unit_unwatch_pid(a, 4711);
  79         assert_se(manager_get_unit_by_pid(m, 4711) == c);
  80
  81         unit_unwatch_pid(c, 4711);
  82         assert_se(manager_get_unit_by_pid(m, 4711) == NULL);
  83
  84         unit_unwatch_pid(c, 4711);
  85         assert_se(manager_get_unit_by_pid(m, 4711) == NULL);
  86
  87         return 0;
  88 }