int main(int argc, char *argv[]) {
Context context = {};
_cleanup_event_unref_ sd_event *event = NULL;
_cleanup_bus_close_unref_ sd_bus *bus = NULL;
int r;
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
umask(0022);
mac_selinux_init("/etc");
if (argc != 1) {
log_error("This program takes no arguments.");
r = -EINVAL;
goto finish;
}
if (argc != 1) {
log_error("This program takes no arguments.");
r = -EINVAL;
goto finish;
}
r = sd_event_default(&event);
if (r < 0) {
log_error("Failed to allocate event loop: %s", strerror(-r));
goto finish;
}
sd_event_set_watchdog(event, true);
r = connect_bus(&context, event, &bus);
if (r < 0)
goto finish;
r = context_read_data(&context);
if (r < 0) {
log_error("Failed to read hostname and machine information: %s", strerror(-r));
goto finish;
}
r = bus_event_loop_with_idle(event, bus, "org.freedesktop.hostname1", DEFAULT_EXIT_USEC, NULL, NULL);
if (r < 0) {
log_error("Failed to run event loop: %s", strerror(-r));
goto finish;
}
finish:
context_free(&context);
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
static int run(int argc, char *argv[]) {
_cleanup_(context_clear) Context context = {};
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
int r;
log_setup_service();
umask(0022);
mac_selinux_init();
if (argc != 1) {
log_error("This program takes no arguments.");
return -EINVAL;
}
assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
r = sd_event_default(&event);
if (r < 0)
return log_error_errno(r, "Failed to allocate event loop: %m");
(void) sd_event_set_watchdog(event, true);
r = sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to install SIGINT handler: %m");
r = sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to install SIGTERM handler: %m");
r = connect_bus(&context, event, &bus);
if (r < 0)
return r;
r = context_read_data(&context);
if (r < 0)
return log_error_errno(r, "Failed to read hostname and machine information: %m");
r = bus_event_loop_with_idle(event, bus, "org.freedesktop.hostname1", DEFAULT_EXIT_USEC, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to run event loop: %m");
return 0;
}
