+static int nologin_timeout_handler(
+ sd_event_source *s,
+ uint64_t usec,
+ void *userdata) {
+
+ Manager *m = userdata;
+ int r;
+
+ log_info("Creating /run/nologin, blocking further logins...");
+
+ r = write_string_file("/run/nologin", "System is going down.", WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC);
+ if (r < 0)
+ log_error_errno(r, "Failed to create /run/nologin: %m");
+ else
+ m->unlink_nologin = true;
+
+ return 0;
+}
+
+static int update_schedule_file(Manager *m) {
+ _cleanup_free_ char *temp_path = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ int r;
+
+ assert(m);
+
+ r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
+
+ r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
+ if (r < 0)
+ return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
+
+ (void) fchmod(fileno(f), 0644);
+
+ fprintf(f,
+ "USEC="USEC_FMT"\n"
+ "WARN_WALL=%i\n"
+ "MODE=%s\n",
+ m->scheduled_shutdown_timeout,
+ m->enable_wall_messages,
+ m->scheduled_shutdown_type);
+
+ if (!isempty(m->wall_message)) {
+ _cleanup_free_ char *t;
+
+ t = cescape(m->wall_message);
+ if (!t) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ fprintf(f, "WALL_MESSAGE=%s\n", t);
+ }
+
+ r = fflush_and_check(f);
+ if (r < 0)
+ goto fail;
+
+ if (rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ (void) unlink(temp_path);
+ (void) unlink("/run/systemd/shutdown/scheduled");
+
+ return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
+}
+