int main(int argc, char *argv[]) {
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
_cleanup_(sd_bus_track_unrefp) sd_bus_track *x = NULL, *y = NULL;
_cleanup_(sd_bus_unrefp) sd_bus *a = NULL, *b = NULL;
const char *unique;
int r;
r = sd_event_default(&event);
assert_se(r >= 0);
r = sd_bus_open_system(&a);
if (IN_SET(r, -ECONNREFUSED, -ENOENT)) {
log_info("Failed to connect to bus, skipping tests.");
return EXIT_TEST_SKIP;
}
assert_se(r >= 0);
r = sd_bus_attach_event(a, event, SD_EVENT_PRIORITY_NORMAL);
assert_se(r >= 0);
r = sd_bus_open_system(&b);
assert_se(r >= 0);
r = sd_bus_attach_event(b, event, SD_EVENT_PRIORITY_NORMAL);
assert_se(r >= 0);
/* Watch b's name from a */
r = sd_bus_track_new(a, &x, track_cb_x, NULL);
assert_se(r >= 0);
r = sd_bus_get_unique_name(b, &unique);
assert_se(r >= 0);
r = sd_bus_track_add_name(x, unique);
assert_se(r >= 0);
/* Watch's a's own name from a */
r = sd_bus_track_new(a, &y, track_cb_y, NULL);
assert_se(r >= 0);
r = sd_bus_get_unique_name(a, &unique);
assert_se(r >= 0);
r = sd_bus_track_add_name(y, unique);
assert_se(r >= 0);
/* Now make b's name disappear */
sd_bus_close(b);
r = sd_event_loop(event);
assert_se(r >= 0);
assert_se(track_cb_called_x);
assert_se(track_cb_called_y);
return 0;
}
int bus_scope_track_controller(Scope *s) {
int r;
assert(s);
if (!s->controller || s->controller_track)
return 0;
r = sd_bus_track_new(UNIT(s)->manager->api_bus, &s->controller_track, on_controller_gone, s);
if (r < 0)
return r;
r = sd_bus_track_add_name(s->controller_track, s->controller);
if (r < 0) {
s->controller_track = sd_bus_track_unref(s->controller_track);
return r;
}
return 0;
}