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         log_set_max_level(LOG_DEBUG);
  17         log_parse_environment();
  18         log_open();
  19
  20         if (getuid() != 0) {
  21                 log_notice("Not running as root, skipping kernel related tests.");
  22                 return EXIT_TEST_SKIP;
  23         }
  24
  25         r = enter_cgroup_subroot();
  26         if (r == -ENOMEDIUM) {
  27                 log_notice("cgroupfs not available, skipping tests");
  28                 return EXIT_TEST_SKIP;
  29         }
  30
  31         assert_se(set_unit_path(get_testdata_dir("")) >= 0);
  32         assert_se(runtime_dir = setup_fake_runtime_dir());
  33
  34         assert_se(manager_new(UNIT_FILE_USER, true, &m) >= 0);
  35         assert_se(manager_startup(m, NULL, NULL) >= 0);
  36
  37         assert_se(a = unit_new(m, sizeof(Service)));
  38         assert_se(unit_add_name(a, "a.service") >= 0);
  39         assert_se(set_isempty(a->pids));
  40
  41         assert_se(b = unit_new(m, sizeof(Service)));
  42         assert_se(unit_add_name(b, "b.service") >= 0);
  43         assert_se(set_isempty(b->pids));
  44
  45         assert_se(c = unit_new(m, sizeof(Service)));
  46         assert_se(unit_add_name(c, "c.service") >= 0);
  47         assert_se(set_isempty(c->pids));
  48
  49         assert_se(hashmap_isempty(m->watch_pids));
  50         assert_se(manager_get_unit_by_pid(m, 4711) == NULL);
  51
  52         assert_se(unit_watch_pid(a, 4711) >= 0);
  53         assert_se(manager_get_unit_by_pid(m, 4711) == a);
  54
  55         assert_se(unit_watch_pid(a, 4711) >= 0);
  56         assert_se(manager_get_unit_by_pid(m, 4711) == a);
  57
  58         assert_se(unit_watch_pid(b, 4711) >= 0);
  59         u = manager_get_unit_by_pid(m, 4711);
  60         assert_se(u == a || u == b);
  61
  62         assert_se(unit_watch_pid(b, 4711) >= 0);
  63         u = manager_get_unit_by_pid(m, 4711);
  64         assert_se(u == a || u == b);
  65
  66         assert_se(unit_watch_pid(c, 4711) >= 0);
  67         u = manager_get_unit_by_pid(m, 4711);
  68         assert_se(u == a || u == b || u == c);
  69
  70         assert_se(unit_watch_pid(c, 4711) >= 0);
  71         u = manager_get_unit_by_pid(m, 4711);
  72         assert_se(u == a || u == b || u == c);
  73
  74         unit_unwatch_pid(b, 4711);
  75         u = manager_get_unit_by_pid(m, 4711);
  76         assert_se(u == a || u == c);
  77
  78         unit_unwatch_pid(b, 4711);
  79         u = manager_get_unit_by_pid(m, 4711);
  80         assert_se(u == a || u == c);
  81
  82         unit_unwatch_pid(a, 4711);
  83         assert_se(manager_get_unit_by_pid(m, 4711) == c);
  84
  85         unit_unwatch_pid(a, 4711);
  86         assert_se(manager_get_unit_by_pid(m, 4711) == c);
  87
  88         unit_unwatch_pid(c, 4711);
  89         assert_se(manager_get_unit_by_pid(m, 4711) == NULL);
  90
  91         unit_unwatch_pid(c, 4711);
  92         assert_se(manager_get_unit_by_pid(m, 4711) == NULL);
  93
  94         return 0;
  95 }