+ if (!dbus_message_iter_init(reply, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
+ log_error("Failed to parse reply.");
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&iter, &sub);
+
+ if (streq(interface, "org.freedesktop.systemd1.Unit")) {
+ const char *id;
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
+ log_error("Failed to parse reply.");
+ goto finish;
+ }
+
+ dbus_message_iter_get_basic(&sub, &id);
+ printf("Unit %s changed.\n", id);
+ } else {
+ uint32_t id;
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_UINT32) {
+ log_error("Failed to parse reply.");
+ goto finish;
+ }
+
+ dbus_message_iter_get_basic(&sub, &id);
+ printf("Job %u changed.\n", id);
+ }
+ }
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+ return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+
+oom:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+ return DBUS_HANDLER_RESULT_NEED_MEMORY;
+}
+
+static int monitor(DBusConnection *bus, char **args, unsigned n) {
+ DBusMessage *m = NULL, *reply = NULL;
+ DBusError error;
+ int r;
+
+ dbus_error_init(&error);
+
+ dbus_bus_add_match(bus,
+ "type='signal',"
+ "sender='org.freedesktop.systemd1',"
+ "interface='org.freedesktop.systemd1.Manager',"
+ "path='/org/freedesktop/systemd1'",
+ &error);
+
+ if (dbus_error_is_set(&error)) {
+ log_error("Failed to add match: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_bus_add_match(bus,
+ "type='signal',"
+ "sender='org.freedesktop.systemd1',"
+ "interface='org.freedesktop.systemd1.Unit',"
+ "member='Changed'",
+ &error);
+
+ if (dbus_error_is_set(&error)) {
+ log_error("Failed to add match: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_bus_add_match(bus,
+ "type='signal',"
+ "sender='org.freedesktop.systemd1',"
+ "interface='org.freedesktop.systemd1.Job',"
+ "member='Changed'",
+ &error);
+
+ if (dbus_error_is_set(&error)) {
+ log_error("Failed to add match: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ if (!dbus_connection_add_filter(bus, monitor_filter, NULL, NULL)) {
+ log_error("Failed to add filter.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "Subscribe"))) {
+ log_error("Could not allocate message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ while (dbus_connection_read_write_dispatch(bus, -1))
+ ;
+
+ r = 0;
+
+finish:
+
+ /* This is slightly dirty, since we don't undo the filter or the matches. */
+
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+
+ return r;
+}
+
+static int dump(DBusConnection *bus, char **args, unsigned n) {
+ DBusMessage *m = NULL, *reply = NULL;
+ DBusError error;
+ int r;
+ const char *text;
+
+ dbus_error_init(&error);
+
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "Dump"))) {
+ log_error("Could not allocate message.");
+ return -ENOMEM;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ if (!dbus_message_get_args(reply, &error,
+ DBUS_TYPE_STRING, &text,
+ DBUS_TYPE_INVALID)) {
+ log_error("Failed to parse reply: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ fputs(text, stdout);
+
+ r = 0;
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+
+ return r;
+}
+
+static int snapshot(DBusConnection *bus, char **args, unsigned n) {
+ DBusMessage *m = NULL, *reply = NULL;
+ DBusError error;
+ int r;
+ const char *name = "", *path, *id;
+ dbus_bool_t cleanup = FALSE;
+ DBusMessageIter iter, sub;
+ const char
+ *interface = "org.freedesktop.systemd1.Unit",
+ *property = "Id";
+
+ dbus_error_init(&error);
+
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "CreateSnapshot"))) {
+ log_error("Could not allocate message.");
+ return -ENOMEM;
+ }
+
+ if (n > 1)
+ name = args[1];
+
+ if (!dbus_message_append_args(m,
+ DBUS_TYPE_STRING, &name,
+ DBUS_TYPE_BOOLEAN, &cleanup,
+ DBUS_TYPE_INVALID)) {
+ log_error("Could not append arguments to message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ if (!dbus_message_get_args(reply, &error,
+ DBUS_TYPE_OBJECT_PATH, &path,
+ DBUS_TYPE_INVALID)) {
+ log_error("Failed to parse reply: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_unref(m);
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ path,
+ "org.freedesktop.DBus.Properties",
+ "Get"))) {
+ log_error("Could not allocate message.");
+ return -ENOMEM;
+ }
+
+ if (!dbus_message_append_args(m,
+ DBUS_TYPE_STRING, &interface,
+ DBUS_TYPE_STRING, &property,
+ DBUS_TYPE_INVALID)) {
+ log_error("Could not append arguments to message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ dbus_message_unref(reply);
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ if (!dbus_message_iter_init(reply, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&iter, &sub);
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_get_basic(&sub, &id);
+
+ if (!arg_quiet)
+ puts(id);
+ r = 0;
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+
+ return r;
+}
+
+static int delete_snapshot(DBusConnection *bus, char **args, unsigned n) {
+ DBusMessage *m = NULL, *reply = NULL;
+ int r;
+ DBusError error;
+ unsigned i;
+
+ assert(bus);
+ assert(args);
+
+ dbus_error_init(&error);
+
+ for (i = 1; i < n; i++) {
+ const char *path = NULL;
+
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "GetUnit"))) {
+ log_error("Could not allocate message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!dbus_message_append_args(m,
+ DBUS_TYPE_STRING, &args[i],
+ DBUS_TYPE_INVALID)) {
+ log_error("Could not append arguments to message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ if (!dbus_message_get_args(reply, &error,
+ DBUS_TYPE_OBJECT_PATH, &path,
+ DBUS_TYPE_INVALID)) {
+ log_error("Failed to parse reply: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_unref(m);
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ path,
+ "org.freedesktop.systemd1.Snapshot",
+ "Remove"))) {
+ log_error("Could not allocate message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ dbus_message_unref(reply);
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_unref(m);
+ dbus_message_unref(reply);
+ m = reply = NULL;
+ }
+
+ r = 0;
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+
+ return r;
+}
+
+static int clear_jobs(DBusConnection *bus, char **args, unsigned n) {
+ DBusMessage *m = NULL, *reply = NULL;
+ DBusError error;
+ int r;
+ const char *method;
+
+ dbus_error_init(&error);
+
+ if (arg_action == ACTION_RELOAD)
+ method = "Reload";
+ else if (arg_action == ACTION_REEXEC)
+ method = "Reexecute";
+ else {
+ assert(arg_action == ACTION_SYSTEMCTL);
+
+ method =
+ streq(args[0], "clear-jobs") ? "ClearJobs" :
+ streq(args[0], "daemon-reload") ? "Reload" :
+ streq(args[0], "daemon-reexec") ? "Reexecute" :
+ "Exit";
+ }
+
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ method))) {
+ log_error("Could not allocate message.");
+ return -ENOMEM;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+
+ if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
+ /* There's always a fallback possible for
+ * legacy actions. */
+ r = 0;
+ goto finish;
+ }
+
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ r = 1;
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+
+ return r;
+}
+
+static int show_enviroment(DBusConnection *bus, char **args, unsigned n) {
+ DBusMessage *m = NULL, *reply = NULL;
+ DBusError error;
+ DBusMessageIter iter, sub, sub2;
+ int r;
+ const char
+ *interface = "org.freedesktop.systemd1.Manager",
+ *property = "Environment";
+
+ dbus_error_init(&error);
+
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.DBus.Properties",
+ "Get"))) {
+ log_error("Could not allocate message.");
+ return -ENOMEM;
+ }
+
+ if (!dbus_message_append_args(m,
+ DBUS_TYPE_STRING, &interface,
+ DBUS_TYPE_STRING, &property,
+ DBUS_TYPE_INVALID)) {
+ log_error("Could not append arguments to message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ if (!dbus_message_iter_init(reply, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&iter, &sub);
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
+ dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_recurse(&sub, &sub2);
+
+ while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
+ const char *text;
+
+ if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
+ log_error("Failed to parse reply.");
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_get_basic(&sub2, &text);
+ printf("%s\n", text);
+
+ dbus_message_iter_next(&sub2);
+ }
+
+ r = 0;
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+
+ return r;
+}
+
+static int set_environment(DBusConnection *bus, char **args, unsigned n) {
+ DBusMessage *m = NULL, *reply = NULL;
+ DBusError error;
+ int r;
+ const char *method;
+ DBusMessageIter iter, sub;
+ unsigned i;
+
+ dbus_error_init(&error);
+
+ method = streq(args[0], "set-environment")
+ ? "SetEnvironment"
+ : "UnsetEnvironment";
+
+ if (!(m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ method))) {
+
+ log_error("Could not allocate message.");
+ return -ENOMEM;
+ }
+
+ dbus_message_iter_init_append(m, &iter);
+
+ if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
+ log_error("Could not append arguments to message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ for (i = 1; i < n; i++)
+ if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &args[i])) {
+ log_error("Could not append arguments to message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!dbus_message_iter_close_container(&iter, &sub)) {
+ log_error("Could not append arguments to message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to issue method call: %s", error.message);
+ r = -EIO;
+ goto finish;
+ }
+
+ r = 0;
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+
+ return r;
+}
+
+static int systemctl_help(void) {
+
+ printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+ "Send control commands to the systemd manager.\n\n"
+ " -h --help Show this help\n"
+ " -t --type=TYPE List only units of a particular type\n"
+ " -p --property=NAME Show only properties by this name\n"
+ " -a --all Show all units/properties, including dead/empty ones\n"
+ " --replace When installing a new job, replace existing conflicting ones\n"
+ " --system Connect to system bus\n"
+ " --session Connect to session bus\n"
+ " -q --quiet Suppress output\n"
+ " --no-block Do not wait until operation finished\n"
+ " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
+ "Commands:\n"
+ " list-units List units\n"
+ " start [NAME...] Start one or more units\n"
+ " stop [NAME...] Stop one or more units\n"
+ " restart [NAME...] Restart one or more units\n"
+ " reload [NAME...] Reload one or more units\n"
+ " isolate [NAME] Start one unit and stop all others\n"
+ " check [NAME...] Check whether any of the passed units are active\n"
+ " show [NAME...|JOB...] Show information about one or more units/jobs/manager\n"
+ " load [NAME...] Load one or more units\n"
+ " list-jobs List jobs\n"
+ " cancel [JOB...] Cancel one or more jobs\n"
+ " clear-jobs Cancel all jobs\n"
+ " monitor Monitor unit/job changes\n"
+ " dump Dump server status\n"
+ " snapshot [NAME] Create a snapshot\n"
+ " delete [NAME...] Remove one or more snapshots\n"
+ " daemon-reload Reload systemd manager configuration\n"
+ " daemon-reexec Reexecute systemd manager\n"
+ " daemon-exit Ask the systemd manager to quit\n"
+ " show-environment Dump environment\n"
+ " set-environment [NAME=VALUE...] Set one or more environment variables\n"
+ " unset-environment [NAME...] Unset one or more environment variables\n"
+ " halt Shut down and halt the system\n"
+ " poweroff Shut down and power-off the system\n"
+ " reboot Shut down and reboot the system\n"
+ " default Enter default mode\n"
+ " rescue Enter rescue mode\n"
+ " emergency Enter emergency mode\n",
+ program_invocation_short_name);