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 "tests.h"
   8
   9 int main(int argc, char *argv[]) {
  10         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
  11         _cleanup_(manager_freep) Manager *m = NULL;
  12         Unit *a, *b, *c, *u;
  13         int r;
  14
  15         test_setup_logging(LOG_DEBUG);
  16
  17         if (getuid() != 0)
  18                 return log_tests_skipped("not root");
  19         r = enter_cgroup_subroot(NULL);
  20         if (r == -ENOMEDIUM)
  21                 return log_tests_skipped("cgroupfs not available");
  22
  23         _cleanup_free_ char *unit_dir = NULL;
  24         assert_se(get_testdata_dir("units/", &unit_dir) >= 0);
  25         assert_se(set_unit_path(unit_dir) >= 0);
  26
  27         assert_se(runtime_dir = setup_fake_runtime_dir());
  28
  29         assert_se(manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_BASIC, &m) >= 0);
  30         assert_se(manager_startup(m, NULL, NULL) >= 0);
  31
  32         assert_se(a = unit_new(m, sizeof(Service)));
  33         assert_se(unit_add_name(a, "a.service") >= 0);
  34         assert_se(set_isempty(a->pids));
  35
  36         assert_se(b = unit_new(m, sizeof(Service)));
  37         assert_se(unit_add_name(b, "b.service") >= 0);
  38         assert_se(set_isempty(b->pids));
  39
  40         assert_se(c = unit_new(m, sizeof(Service)));
  41         assert_se(unit_add_name(c, "c.service") >= 0);
  42         assert_se(set_isempty(c->pids));
  43
  44         assert_se(hashmap_isempty(m->watch_pids));
  45         assert_se(manager_get_unit_by_pid(m, 4711) == NULL);
  46
  47         assert_se(unit_watch_pid(a, 4711, false) >= 0);
  48         assert_se(manager_get_unit_by_pid(m, 4711) == a);
  49
  50         assert_se(unit_watch_pid(a, 4711, false) >= 0);
  51         assert_se(manager_get_unit_by_pid(m, 4711) == a);
  52
  53         assert_se(unit_watch_pid(b, 4711, false) >= 0);
  54         u = manager_get_unit_by_pid(m, 4711);
  55         assert_se(u == a || u == b);
  56
  57         assert_se(unit_watch_pid(b, 4711, false) >= 0);
  58         u = manager_get_unit_by_pid(m, 4711);
  59         assert_se(u == a || u == b);
  60
  61         assert_se(unit_watch_pid(c, 4711, false) >= 0);
  62         u = manager_get_unit_by_pid(m, 4711);
  63         assert_se(u == a || u == b || u == c);
  64
  65         assert_se(unit_watch_pid(c, 4711, false) >= 0);
  66         u = manager_get_unit_by_pid(m, 4711);
  67         assert_se(u == a || u == b || u == c);
  68
  69         unit_unwatch_pid(b, 4711);
  70         u = manager_get_unit_by_pid(m, 4711);
  71         assert_se(u == a || u == c);
  72
  73         unit_unwatch_pid(b, 4711);
  74         u = manager_get_unit_by_pid(m, 4711);
  75         assert_se(u == a || u == c);
  76
  77         unit_unwatch_pid(a, 4711);
  78         assert_se(manager_get_unit_by_pid(m, 4711) == c);
  79
  80         unit_unwatch_pid(a, 4711);
  81         assert_se(manager_get_unit_by_pid(m, 4711) == c);
  82
  83         unit_unwatch_pid(c, 4711);
  84         assert_se(manager_get_unit_by_pid(m, 4711) == NULL);
  85
  86         unit_unwatch_pid(c, 4711);
  87         assert_se(manager_get_unit_by_pid(m, 4711) == NULL);
  88
  89         return 0;
  90 }