+static int check_inhibitors(sd_bus *bus, const char *verb, const char *inhibit_what) {
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_strv_free_ char **sessions = NULL;
+ const char *what, *who, *why, *mode;
+ uint32_t uid, pid;
+ unsigned c = 0;
+ char **s;
+ int r;
+
+ assert(bus);
+
+ if (geteuid() == 0)
+ return 0;
+
+ if (!on_tty())
+ return 0;
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ "ListInhibitors",
+ NULL,
+ &reply,
+ NULL);
+ if (r < 0)
+ /* If logind is not around, then there are no inhibitors... */
+ return 0;
+
+ r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
+ _cleanup_free_ char *comm = NULL, *user = NULL;
+ _cleanup_strv_free_ char **sv = NULL;
+
+ if (!streq(mode, "block"))
+ continue;
+
+ sv = strv_split(what, ":");
+ if (!sv)
+ return log_oom();
+
+ if (!strv_contains(sv, inhibit_what))
+ continue;
+
+ get_process_comm(pid, &comm);
+ user = uid_to_name(uid);
+
+ log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".",
+ who, pid, strna(comm), strna(user), why);
+
+ c++;
+ }
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ r = sd_bus_message_exit_container(reply);
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ /* Check for current sessions */
+ sd_get_sessions(&sessions);
+ STRV_FOREACH(s, sessions) {
+ _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
+
+ if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
+ continue;
+
+ if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
+ continue;
+
+ if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
+ continue;
+
+ sd_session_get_tty(*s, &tty);
+ sd_session_get_seat(*s, &seat);
+ sd_session_get_service(*s, &service);
+ user = uid_to_name(uid);
+
+ log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
+ c++;
+ }
+
+ if (c <= 0)
+ return 0;
+
+ log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'loginctl %s -i'.", verb);
+
+ return -EPERM;
+}
+
+static int poweroff(int argc, char *argv[], void *userdata) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ sd_bus *bus = userdata;
+ int r;
+
+ assert(bus);
+
+ r = check_inhibitors(bus, "poweroff", "shutdown");
+ if (r < 0)
+ return r;
+
+ polkit_agent_open_if_enabled();
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ "PowerOff",
+ &error,
+ NULL,
+ "b", arg_ask_password);
+ if (r < 0)
+ log_error("Failed to power off: %s", bus_error_message(&error, r));
+
+ return r;
+}
+
+static int reboot(int argc, char *argv[], void *userdata) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ sd_bus *bus = userdata;
+ int r;
+
+ assert(bus);
+
+ r = check_inhibitors(bus, "reboot", "shutdown");
+ if (r < 0)
+ return r;
+
+ polkit_agent_open_if_enabled();
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ "Reboot",
+ &error,
+ NULL,
+ "b", arg_ask_password);
+ if (r < 0)
+ log_error("Failed to reboot: %s", bus_error_message(&error, r));
+
+ return r;
+}
+
+static int suspend(int argc, char *argv[], void *userdata) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ sd_bus *bus = userdata;
+ int r;
+
+ assert(bus);
+
+ r = check_inhibitors(bus, "suspend", "sleep");
+ if (r < 0)
+ return r;
+
+ polkit_agent_open_if_enabled();
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ "Suspend",
+ &error,
+ NULL,
+ "b", arg_ask_password);
+ if (r < 0)
+ log_error("Failed to suspend: %s", bus_error_message(&error, r));
+
+ return r;
+}
+
+static int hibernate(int argc, char *argv[], void *userdata) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ sd_bus *bus = userdata;
+ int r;
+
+ assert(bus);
+
+ r = check_inhibitors(bus, "hibernate", "sleep");
+ if (r < 0)
+ return r;
+
+ polkit_agent_open_if_enabled();
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ "Hibernate",
+ &error,
+ NULL,
+ "b", arg_ask_password);
+ if (r < 0)
+ log_error("Failed to hibernate: %s", bus_error_message(&error, r));
+
+ return r;
+}
+
+static int hybrid_sleep(int argc, char *argv[], void *userdata) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ sd_bus *bus = userdata;
+ int r;
+
+ assert(bus);
+
+ r = check_inhibitors(bus, "hybrid-sleep", "sleep");
+ if (r < 0)
+ return r;
+
+ polkit_agent_open_if_enabled();
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ "HybridSleep",
+ &error,
+ NULL,
+ "b", arg_ask_password);
+ if (r < 0)
+ log_error("Failed to hybrid sleep: %s", bus_error_message(&error, r));
+
+ return r;
+}
+