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; }