]> git.ipfire.org Git - thirdparty/systemd.git/blobdiff - src/systemctl/systemctl.c
util-lib: split string parsing related calls from util.[ch] into parse-util.[ch]
[thirdparty/systemd.git] / src / systemctl / systemctl.c
index e20fc1bbbb978874aa8990eebe83a8ad4bd71669..49a4b46fd429341d7f38a2f1d2258d95d3f55a05 100644 (file)
@@ -37,7 +37,6 @@
 #include "sd-daemon.h"
 #include "sd-login.h"
 
-#include "build.h"
 #include "bus-common-errors.h"
 #include "bus-error.h"
 #include "bus-message.h"
 #include "efivars.h"
 #include "env-util.h"
 #include "exit-status.h"
+#include "fd-util.h"
 #include "fileio.h"
 #include "formats-util.h"
 #include "hostname-util.h"
 #include "initreq.h"
 #include "install.h"
+#include "io-util.h"
 #include "list.h"
 #include "log.h"
 #include "logs-show.h"
 #include "macro.h"
 #include "mkdir.h"
 #include "pager.h"
+#include "parse-util.h"
 #include "path-lookup.h"
 #include "path-util.h"
 #include "process-util.h"
 #include "strv.h"
 #include "terminal-util.h"
 #include "unit-name.h"
+#include "user-util.h"
 #include "util.h"
 #include "utmp-wtmp.h"
+#include "verbs.h"
 
 static char **arg_types = NULL;
 static char **arg_states = NULL;
@@ -107,7 +111,7 @@ static UnitFilePresetMode arg_preset_mode = UNIT_FILE_PRESET_FULL;
 static char **arg_wall = NULL;
 static const char *arg_kill_who = NULL;
 static int arg_signal = SIGTERM;
-static const char *arg_root = NULL;
+static char *arg_root = NULL;
 static usec_t arg_when = 0;
 static enum action {
         _ACTION_INVALID,
@@ -134,23 +138,61 @@ static enum action {
         _ACTION_MAX
 } arg_action = ACTION_SYSTEMCTL;
 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
-static char *arg_host = NULL;
+static const char *arg_host = NULL;
 static unsigned arg_lines = 10;
 static OutputMode arg_output = OUTPUT_SHORT;
 static bool arg_plain = false;
 static bool arg_firmware_setup = false;
 static bool arg_now = false;
 
-static bool original_stdout_is_tty;
-
-static int daemon_reload(sd_bus *bus, char **args);
+static int daemon_reload(int argc, char *argv[], void* userdata);
 static int halt_now(enum action a);
 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet);
 
-static char** strv_skip_first(char **strv) {
-        if (strv_length(strv) > 0)
-                return strv + 1;
-        return NULL;
+static bool original_stdout_is_tty;
+
+typedef enum BusFocus {
+        BUS_FULL,      /* The full bus indicated via --system or --user */
+        BUS_MANAGER,   /* The manager itself, possibly directly, possibly via the bus */
+        _BUS_FOCUS_MAX
+} BusFocus;
+
+static sd_bus *busses[_BUS_FOCUS_MAX] = {};
+
+static int acquire_bus(BusFocus focus, sd_bus **ret) {
+        int r;
+
+        assert(focus < _BUS_FOCUS_MAX);
+        assert(ret);
+
+        /* We only go directly to the manager, if we are using a local transport */
+        if (arg_transport != BUS_TRANSPORT_LOCAL)
+                focus = BUS_FULL;
+
+        if (!busses[focus]) {
+                bool user;
+
+                user = arg_scope != UNIT_FILE_SYSTEM;
+
+                if (focus == BUS_MANAGER)
+                        r = bus_connect_transport_systemd(arg_transport, arg_host, user, &busses[focus]);
+                else
+                        r = bus_connect_transport(arg_transport, arg_host, user, &busses[focus]);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to connect to bus: %m");
+
+                (void) sd_bus_set_allow_interactive_authorization(busses[focus], arg_ask_password);
+        }
+
+        *ret = busses[focus];
+        return 0;
+}
+
+static void release_busses(void) {
+        BusFocus w;
+
+        for (w = 0; w < _BUS_FOCUS_MAX; w++)
+                busses[w] = sd_bus_flush_close_unref(busses[w]);
 }
 
 static void pager_open_if_enabled(void) {
@@ -230,42 +272,10 @@ static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error)
         return EXIT_FAILURE;
 }
 
-static void warn_wall(enum action a) {
-        static const char *table[_ACTION_MAX] = {
-                [ACTION_HALT]            = "The system is going down for system halt NOW!",
-                [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
-                [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
-                [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
-                [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
-                [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
-                [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
-        };
-
-        if (arg_no_wall)
-                return;
-
-        if (arg_wall) {
-                _cleanup_free_ char *p;
-
-                p = strv_join(arg_wall, " ");
-                if (!p) {
-                        log_oom();
-                        return;
-                }
-
-                if (*p) {
-                        utmp_wall(p, NULL, NULL, NULL, NULL);
-                        return;
-                }
-        }
-
-        if (!table[a])
-                return;
-
-        utmp_wall(table[a], NULL, NULL, NULL, NULL);
-}
+static bool install_client_side(void) {
 
-static bool avoid_bus(void) {
+        /* Decides when to execute enable/disable/... operations
+         * client-side rather than server-side. */
 
         if (running_in_chroot() > 0)
                 return true;
@@ -431,11 +441,11 @@ static int output_units_list(const UnitInfo *unit_infos, unsigned c) {
                 if (STR_IN_SET(u->load_state, "error", "not-found", "masked") && !arg_plain) {
                         on_loaded = ansi_highlight_red();
                         on_circle = ansi_highlight_yellow();
-                        off_loaded = off_circle = ansi_highlight_off();
+                        off_loaded = off_circle = ansi_normal();
                         circle = true;
                 } else if (streq(u->active_state, "failed") && !arg_plain) {
                         on_circle = on_active = ansi_highlight_red();
-                        off_circle = off_active = ansi_highlight_off();
+                        off_circle = off_active = ansi_normal();
                         circle = true;
                 }
 
@@ -482,10 +492,10 @@ static int output_units_list(const UnitInfo *unit_infos, unsigned c) {
                              "SUB    = The low-level unit activation state, values depend on unit type.");
                         puts(job_count ? "JOB    = Pending job for the unit.\n" : "");
                         on = ansi_highlight();
-                        off = ansi_highlight_off();
+                        off = ansi_normal();
                 } else {
                         on = ansi_highlight_red();
-                        off = ansi_highlight_off();
+                        off = ansi_normal();
                 }
 
                 if (arg_all)
@@ -652,15 +662,20 @@ static int get_unit_list_recursive(
         return c;
 }
 
-static int list_units(sd_bus *bus, char **args) {
+static int list_units(int argc, char *argv[], void *userdata) {
         _cleanup_free_ UnitInfo *unit_infos = NULL;
         _cleanup_(message_set_freep) Set *replies = NULL;
         _cleanup_strv_free_ char **machines = NULL;
+        sd_bus *bus;
         int r;
 
         pager_open_if_enabled();
 
-        r = get_unit_list_recursive(bus, strv_skip_first(args), &unit_infos, &replies, &machines);
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        r = get_unit_list_recursive(bus, strv_skip(argv, 1), &unit_infos, &replies, &machines);
         if (r < 0)
                 return r;
 
@@ -676,6 +691,10 @@ static int get_triggered_units(
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         int r;
 
+        assert(bus);
+        assert(path);
+        assert(ret);
+
         r = sd_bus_get_property_strv(
                         bus,
                         "org.freedesktop.systemd1",
@@ -684,9 +703,8 @@ static int get_triggered_units(
                         "Triggers",
                         &error,
                         ret);
-
         if (r < 0)
-                log_error("Failed to determine triggers: %s", bus_error_message(&error, r));
+                return log_error_errno(r, "Failed to determine triggers: %s", bus_error_message(&error, r));
 
         return 0;
 }
@@ -710,10 +728,8 @@ static int get_listening(
                         &error,
                         &reply,
                         "a(ss)");
-        if (r < 0) {
-                log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get list of listening sockets: %s", bus_error_message(&error, r));
 
         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
         if (r < 0)
@@ -836,12 +852,12 @@ static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
                 }
 
                 on = ansi_highlight();
-                off = ansi_highlight_off();
+                off = ansi_normal();
                 if (!arg_no_legend)
                         printf("\n");
         } else {
                 on = ansi_highlight_red();
-                off = ansi_highlight_off();
+                off = ansi_normal();
         }
 
         if (!arg_no_legend) {
@@ -853,7 +869,7 @@ static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
         return 0;
 }
 
-static int list_sockets(sd_bus *bus, char **args) {
+static int list_sockets(int argc, char *argv[], void *userdata) {
         _cleanup_(message_set_freep) Set *replies = NULL;
         _cleanup_strv_free_ char **machines = NULL;
         _cleanup_free_ UnitInfo *unit_infos = NULL;
@@ -863,10 +879,15 @@ static int list_sockets(sd_bus *bus, char **args) {
         unsigned cs = 0;
         size_t size = 0;
         int r = 0, n;
+        sd_bus *bus;
 
         pager_open_if_enabled();
 
-        n = get_unit_list_recursive(bus, strv_skip_first(args), &unit_infos, &replies, &machines);
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        n = get_unit_list_recursive(bus, strv_skip(argv, 1), &unit_infos, &replies, &machines);
         if (n < 0)
                 return n;
 
@@ -947,10 +968,8 @@ static int get_next_elapse(
                         &error,
                         't',
                         &t.monotonic);
-        if (r < 0) {
-                log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get next elapsation time: %s", bus_error_message(&error, r));
 
         r = sd_bus_get_property_trivial(
                         bus,
@@ -961,10 +980,8 @@ static int get_next_elapse(
                         &error,
                         't',
                         &t.realtime);
-        if (r < 0) {
-                log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get next elapsation time: %s", bus_error_message(&error, r));
 
         *next = t;
         return 0;
@@ -991,10 +1008,8 @@ static int get_last_trigger(
                         &error,
                         't',
                         last);
-        if (r < 0) {
-                log_error("Failed to get last trigger time: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get last trigger time: %s", bus_error_message(&error, r));
 
         return 0;
 }
@@ -1118,12 +1133,12 @@ static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
                 }
 
                 on = ansi_highlight();
-                off = ansi_highlight_off();
+                off = ansi_normal();
                 if (!arg_no_legend)
                         printf("\n");
         } else {
                 on = ansi_highlight_red();
-                off = ansi_highlight_off();
+                off = ansi_normal();
         }
 
         if (!arg_no_legend) {
@@ -1160,7 +1175,7 @@ static usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next) {
         return next_elapse;
 }
 
-static int list_timers(sd_bus *bus, char **args) {
+static int list_timers(int argc, char *argv[], void *userdata) {
         _cleanup_(message_set_freep) Set *replies = NULL;
         _cleanup_strv_free_ char **machines = NULL;
         _cleanup_free_ struct timer_info *timer_infos = NULL;
@@ -1170,11 +1185,16 @@ static int list_timers(sd_bus *bus, char **args) {
         size_t size = 0;
         int n, c = 0;
         dual_timestamp nw;
+        sd_bus *bus;
         int r = 0;
 
         pager_open_if_enabled();
 
-        n = get_unit_list_recursive(bus, strv_skip_first(args), &unit_infos, &replies, &machines);
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        n = get_unit_list_recursive(bus, strv_skip(argv, 1), &unit_infos, &replies, &machines);
         if (n < 0)
                 return n;
 
@@ -1306,10 +1326,10 @@ static void output_unit_file_list(const UnitFileList *units, unsigned c) {
                            UNIT_FILE_DISABLED,
                            UNIT_FILE_INVALID)) {
                         on  = ansi_highlight_red();
-                        off = ansi_highlight_off();
+                        off = ansi_normal();
                 } else if (u->state == UNIT_FILE_ENABLED) {
                         on  = ansi_highlight_green();
-                        off = ansi_highlight_off();
+                        off = ansi_normal();
                 } else
                         on = off = "";
 
@@ -1326,7 +1346,7 @@ static void output_unit_file_list(const UnitFileList *units, unsigned c) {
                 printf("\n%u unit files listed.\n", c);
 }
 
-static int list_unit_files(sd_bus *bus, char **args) {
+static int list_unit_files(int argc, char *argv[], void *userdata) {
         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
         _cleanup_free_ UnitFileList *units = NULL;
         UnitFileList *unit;
@@ -1338,7 +1358,7 @@ static int list_unit_files(sd_bus *bus, char **args) {
 
         pager_open_if_enabled();
 
-        if (avoid_bus()) {
+        if (install_client_side()) {
                 Hashmap *h;
                 UnitFileList *u;
                 Iterator i;
@@ -1351,8 +1371,7 @@ static int list_unit_files(sd_bus *bus, char **args) {
                 r = unit_file_get_list(arg_scope, arg_root, h);
                 if (r < 0) {
                         unit_file_list_free(h);
-                        log_error_errno(r, "Failed to get unit file list: %m");
-                        return r;
+                        return log_error_errno(r, "Failed to get unit file list: %m");
                 }
 
                 n_units = hashmap_size(h);
@@ -1364,7 +1383,7 @@ static int list_unit_files(sd_bus *bus, char **args) {
                 }
 
                 HASHMAP_FOREACH(u, h, i) {
-                        if (!output_show_unit_file(u, strv_skip_first(args)))
+                        if (!output_show_unit_file(u, strv_skip(argv, 1)))
                                 continue;
 
                         units[c++] = *u;
@@ -1375,6 +1394,11 @@ static int list_unit_files(sd_bus *bus, char **args) {
                 hashmap_free(h);
         } else {
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+                sd_bus *bus;
+
+                r = acquire_bus(BUS_MANAGER, &bus);
+                if (r < 0)
+                        return r;
 
                 r = sd_bus_call_method(
                                 bus,
@@ -1385,10 +1409,8 @@ static int list_unit_files(sd_bus *bus, char **args) {
                                 &error,
                                 &reply,
                                 NULL);
-                if (r < 0) {
-                        log_error("Failed to list unit files: %s", bus_error_message(&error, r));
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to list unit files: %s", bus_error_message(&error, r));
 
                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
                 if (r < 0)
@@ -1404,7 +1426,7 @@ static int list_unit_files(sd_bus *bus, char **args) {
                                 unit_file_state_from_string(state)
                         };
 
-                        if (output_show_unit_file(&units[c], strv_skip_first(args)))
+                        if (output_show_unit_file(&units[c], strv_skip(argv, 1)))
                                 c ++;
 
                 }
@@ -1419,7 +1441,7 @@ static int list_unit_files(sd_bus *bus, char **args) {
         qsort_safe(units, c, sizeof(UnitFileList), compare_unit_file_list);
         output_unit_file_list(units, c);
 
-        if (avoid_bus()) {
+        if (install_client_side()) {
                 for (unit = units; unit < units + c; unit++)
                         free(unit->path);
         }
@@ -1511,10 +1533,8 @@ static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, cha
                         &error,
                         &reply,
                         "s", "org.freedesktop.systemd1.Unit");
-        if (r < 0) {
-                log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get properties of %s: %s", name, bus_error_message(&error, r));
 
         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
         if (r < 0)
@@ -1618,7 +1638,7 @@ static int list_dependencies_one(
 
                         state = check_one_unit(bus, *c, "activating\0active\0reloading\0", true);
                         on = state > 0 ? ansi_highlight_green() : ansi_highlight_red();
-                        printf("%s%s%s ", on, draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
+                        printf("%s%s%s ", on, draw_special_char(DRAW_BLACK_CIRCLE), ansi_normal());
                 }
 
                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
@@ -1638,16 +1658,15 @@ static int list_dependencies_one(
         return 0;
 }
 
-static int list_dependencies(sd_bus *bus, char **args) {
+static int list_dependencies(int argc, char *argv[], void *userdata) {
         _cleanup_strv_free_ char **units = NULL;
         _cleanup_free_ char *unit = NULL;
         const char *u;
+        sd_bus *bus;
         int r;
 
-        assert(bus);
-
-        if (args[1]) {
-                r = unit_name_mangle(args[1], UNIT_NAME_NOGLOB, &unit);
+        if (argv[1]) {
+                r = unit_name_mangle(argv[1], UNIT_NAME_NOGLOB, &unit);
                 if (r < 0)
                         return log_error_errno(r, "Failed to mangle unit name: %m");
 
@@ -1657,6 +1676,10 @@ static int list_dependencies(sd_bus *bus, char **args) {
 
         pager_open_if_enabled();
 
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         puts(u);
 
         return list_dependencies_one(bus, u, 0, &units, 0);
@@ -1837,17 +1860,17 @@ static void output_machines_list(struct machine_info *machine_infos, unsigned n)
 
                 if (streq_ptr(m->state, "degraded")) {
                         on_state = ansi_highlight_red();
-                        off_state = ansi_highlight_off();
+                        off_state = ansi_normal();
                         circle = true;
                 } else if (!streq_ptr(m->state, "running")) {
                         on_state = ansi_highlight_yellow();
-                        off_state = ansi_highlight_off();
+                        off_state = ansi_normal();
                         circle = true;
                 }
 
                 if (m->n_failed_units > 0) {
                         on_failed = ansi_highlight_red();
-                        off_failed = ansi_highlight_off();
+                        off_failed = ansi_normal();
                 } else
                         on_failed = off_failed = "";
 
@@ -1872,12 +1895,11 @@ static void output_machines_list(struct machine_info *machine_infos, unsigned n)
                 printf("\n%u machines listed.\n", n);
 }
 
-static int list_machines(sd_bus *bus, char **args) {
+static int list_machines(int argc, char *argv[], void *userdata) {
         struct machine_info *machine_infos = NULL;
+        sd_bus *bus;
         int r;
 
-        assert(bus);
-
         if (geteuid() != 0) {
                 log_error("Must be root.");
                 return -EPERM;
@@ -1885,7 +1907,11 @@ static int list_machines(sd_bus *bus, char **args) {
 
         pager_open_if_enabled();
 
-        r = get_machine_list(bus, &machine_infos, strv_skip_first(args));
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        r = get_machine_list(bus, &machine_infos, strv_skip(argv, 1));
         if (r < 0)
                 return r;
 
@@ -1896,13 +1922,13 @@ static int list_machines(sd_bus *bus, char **args) {
         return 0;
 }
 
-static int get_default(sd_bus *bus, char **args) {
+static int get_default(int argc, char *argv[], void *userdata) {
         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
         _cleanup_free_ char *_path = NULL;
         const char *path;
         int r;
 
-        if (!bus || avoid_bus()) {
+        if (install_client_side()) {
                 r = unit_file_get_default(arg_scope, arg_root, &_path);
                 if (r < 0)
                         return log_error_errno(r, "Failed to get default target: %m");
@@ -1910,6 +1936,11 @@ static int get_default(sd_bus *bus, char **args) {
 
         } else {
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+                sd_bus *bus;
+
+                r = acquire_bus(BUS_MANAGER, &bus);
+                if (r < 0)
+                        return r;
 
                 r = sd_bus_call_method(
                                 bus,
@@ -1920,10 +1951,8 @@ static int get_default(sd_bus *bus, char **args) {
                                 &error,
                                 &reply,
                                 NULL);
-                if (r < 0) {
-                        log_error("Failed to get default target: %s", bus_error_message(&error, -r));
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to get default target: %s", bus_error_message(&error, r));
 
                 r = sd_bus_message_read(reply, "s", &path);
                 if (r < 0)
@@ -1949,17 +1978,21 @@ static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_cha
         }
 }
 
-static int set_default(sd_bus *bus, char **args) {
+static int set_default(int argc, char *argv[], void *userdata) {
         _cleanup_free_ char *unit = NULL;
-        UnitFileChange *changes = NULL;
-        unsigned n_changes = 0;
         int r;
 
-        r = unit_name_mangle_with_suffix(args[1], UNIT_NAME_NOGLOB, ".target", &unit);
+        assert(argc >= 2);
+        assert(argv);
+
+        r = unit_name_mangle_with_suffix(argv[1], UNIT_NAME_NOGLOB, ".target", &unit);
         if (r < 0)
                 return log_error_errno(r, "Failed to mangle unit name: %m");
 
-        if (!bus || avoid_bus()) {
+        if (install_client_side()) {
+                UnitFileChange *changes = NULL;
+                unsigned n_changes = 0;
+
                 r = unit_file_set_default(arg_scope, arg_root, unit, true, &changes, &n_changes);
                 if (r < 0)
                         return log_error_errno(r, "Failed to set default target: %m");
@@ -1967,13 +2000,19 @@ static int set_default(sd_bus *bus, char **args) {
                 if (!arg_quiet)
                         dump_unit_file_changes(changes, n_changes);
 
+                unit_file_changes_free(changes, n_changes);
                 r = 0;
         } else {
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+                sd_bus *bus;
 
                 polkit_agent_open_if_enabled();
 
+                r = acquire_bus(BUS_MANAGER, &bus);
+                if (r < 0)
+                        return r;
+
                 r = sd_bus_call_method(
                                 bus,
                                 "org.freedesktop.systemd1",
@@ -1983,10 +2022,8 @@ static int set_default(sd_bus *bus, char **args) {
                                 &error,
                                 &reply,
                                 "sb", unit, 1);
-                if (r < 0) {
-                        log_error("Failed to set default target: %s", bus_error_message(&error, -r));
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to set default target: %s", bus_error_message(&error, r));
 
                 r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, NULL, NULL);
                 if (r < 0)
@@ -1994,13 +2031,11 @@ static int set_default(sd_bus *bus, char **args) {
 
                 /* Try to reload if enabled */
                 if (!arg_no_reload)
-                        r = daemon_reload(bus, args);
+                        r = daemon_reload(argc, argv, userdata);
                 else
                         r = 0;
         }
 
-        unit_file_changes_free(changes, n_changes);
-
         return r;
 }
 
@@ -2020,7 +2055,7 @@ static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipp
         if (n == 0) {
                 if (!arg_no_legend) {
                         on = ansi_highlight_green();
-                        off = ansi_highlight_off();
+                        off = ansi_normal();
 
                         printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off);
                 }
@@ -2061,7 +2096,7 @@ static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipp
 
                 if (streq(j->state, "running")) {
                         on = ansi_highlight();
-                        off = ansi_highlight_off();
+                        off = ansi_normal();
                 } else
                         on = off = "";
 
@@ -2075,7 +2110,7 @@ static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipp
 
         if (!arg_no_legend) {
                 on = ansi_highlight();
-                off = ansi_highlight_off();
+                off = ansi_normal();
 
                 printf("\n%s%u jobs listed%s.\n", on, n, off);
         }
@@ -2085,17 +2120,24 @@ static bool output_show_job(struct job_info *job, char **patterns) {
         return strv_fnmatch_or_empty(patterns, job->name, FNM_NOESCAPE);
 }
 
-static int list_jobs(sd_bus *bus, char **args) {
+static int list_jobs(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;
         const char *name, *type, *state, *job_path, *unit_path;
         _cleanup_free_ struct job_info *jobs = NULL;
         size_t size = 0;
         unsigned c = 0;
+        sd_bus *bus;
         uint32_t id;
         int r;
         bool skipped = false;
 
+        pager_open_if_enabled();
+
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         r = sd_bus_call_method(
                         bus,
                         "org.freedesktop.systemd1",
@@ -2105,10 +2147,8 @@ static int list_jobs(sd_bus *bus, char **args) {
                         &error,
                         &reply,
                         NULL);
-        if (r < 0) {
-                log_error("Failed to list jobs: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to list jobs: %s", bus_error_message(&error, r));
 
         r = sd_bus_message_enter_container(reply, 'a', "(usssoo)");
         if (r < 0)
@@ -2117,7 +2157,7 @@ static int list_jobs(sd_bus *bus, char **args) {
         while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, &job_path, &unit_path)) > 0) {
                 struct job_info job = { id, name, type, state };
 
-                if (!output_show_job(&job, strv_skip_first(args))) {
+                if (!output_show_job(&job, strv_skip(argv, 1))) {
                         skipped = true;
                         continue;
                 }
@@ -2138,18 +2178,21 @@ static int list_jobs(sd_bus *bus, char **args) {
         return r;
 }
 
-static int cancel_job(sd_bus *bus, char **args) {
+static int cancel_job(int argc, char *argv[], void *userdata) {
+        sd_bus *bus;
         char **name;
         int r = 0;
 
-        assert(args);
-
-        if (strv_length(args) <= 1)
-                return daemon_reload(bus, args);
+        if (argc <= 1)
+                return daemon_reload(argc, argv, userdata);
 
         polkit_agent_open_if_enabled();
 
-        STRV_FOREACH(name, args+1) {
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        STRV_FOREACH(name, strv_skip(argv, 1)) {
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
                 uint32_t id;
                 int q;
@@ -2168,7 +2211,7 @@ static int cancel_job(sd_bus *bus, char **args) {
                                 NULL,
                                 "u", id);
                 if (q < 0) {
-                        log_error("Failed to cancel job %"PRIu32": %s", id, bus_error_message(&error, q));
+                        log_error_errno(q, "Failed to cancel job %"PRIu32": %s", id, bus_error_message(&error, q));
                         if (r == 0)
                                 r = q;
                 }
@@ -2221,7 +2264,7 @@ static int need_daemon_reload(sd_bus *bus, const char *unit) {
 static void warn_unit_file_changed(const char *name) {
         log_warning("%sWarning:%s %s changed on disk. Run 'systemctl%s daemon-reload' to reload units.",
                     ansi_highlight_red(),
-                    ansi_highlight_off(),
+                    ansi_normal(),
                     name,
                     arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
 }
@@ -2253,7 +2296,6 @@ static int unit_file_find_path(LookupPaths *lp, const char *unit_name, char **un
 static int unit_find_paths(
                 sd_bus *bus,
                 const char *unit_name,
-                bool avoid_bus_cache,
                 LookupPaths *lp,
                 char **fragment_path,
                 char ***dropin_paths) {
@@ -2274,7 +2316,7 @@ static int unit_find_paths(
         assert(fragment_path);
         assert(lp);
 
-        if (!avoid_bus_cache && !unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) {
+        if (!install_client_side() && !unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) {
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
                 _cleanup_bus_message_unref_ sd_bus_message *unit_load_error = NULL;
                 _cleanup_free_ char *unit = NULL;
@@ -2471,10 +2513,8 @@ static int check_triggering_units(
                         "LoadState",
                         &error,
                         &state);
-        if (r < 0) {
-                log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get load state of %s: %s", n, bus_error_message(&error, r));
 
         if (streq(state, "masked"))
                 return 0;
@@ -2487,10 +2527,8 @@ static int check_triggering_units(
                         "TriggeredBy",
                         &error,
                         &triggered_by);
-        if (r < 0) {
-                log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
 
         STRV_FOREACH(i, triggered_by) {
                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
@@ -2586,8 +2624,7 @@ static int start_unit_one(
 
                 verb = method_to_verb(method);
 
-                log_error("Failed to %s %s: %s", verb, name, bus_error_message(error, r));
-                return r;
+                return log_error_errno(r, "Failed to %s %s: %s", verb, name, bus_error_message(error, r));
         }
 
         r = sd_bus_message_read(reply, "o", &path);
@@ -2608,11 +2645,13 @@ static int start_unit_one(
 }
 
 static int expand_names(sd_bus *bus, char **names, const char* suffix, char ***ret) {
-
         _cleanup_strv_free_ char **mangled = NULL, **globs = NULL;
         char **name;
         int r, i;
 
+        assert(bus);
+        assert(ret);
+
         STRV_FOREACH(name, names) {
                 char *t;
 
@@ -2637,9 +2676,6 @@ static int expand_names(sd_bus *bus, char **names, const char* suffix, char ***r
                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
                 _cleanup_free_ UnitInfo *unit_infos = NULL;
 
-                if (!bus)
-                        return log_error_errno(EOPNOTSUPP, "Unit name globbing without bus is not implemented.");
-
                 r = get_unit_list(bus, NULL, globs, &unit_infos, 0, &reply);
                 if (r < 0)
                         return r;
@@ -2687,24 +2723,28 @@ static enum action verb_to_action(const char *verb) {
         return _ACTION_INVALID;
 }
 
-static int start_unit(sd_bus *bus, char **args) {
+static int start_unit(int argc, char *argv[], void *userdata) {
         _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
         const char *method, *mode, *one_name, *suffix = NULL;
         _cleanup_strv_free_ char **names = NULL;
+        sd_bus *bus;
         char **name;
         int r = 0;
 
-        assert(bus);
-
         ask_password_agent_open_if_enabled();
         polkit_agent_open_if_enabled();
 
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         if (arg_action == ACTION_SYSTEMCTL) {
                 enum action action;
-                method = verb_to_method(args[0]);
-                action = verb_to_action(args[0]);
 
-                if (streq(args[0], "isolate")) {
+                method = verb_to_method(argv[0]);
+                action = verb_to_action(argv[0]);
+
+                if (streq(argv[0], "isolate")) {
                         mode = "isolate";
                         suffix = ".target";
                 } else
@@ -2724,9 +2764,9 @@ static int start_unit(sd_bus *bus, char **args) {
         if (one_name)
                 names = strv_new(one_name, NULL);
         else {
-                r = expand_names(bus, args + 1, suffix, &names);
+                r = expand_names(bus, strv_skip(argv, 1), suffix, &names);
                 if (r < 0)
-                        log_error_errno(r, "Failed to expand names: %m");
+                        return log_error_errno(r, "Failed to expand names: %m");
         }
 
         if (!arg_no_block) {
@@ -2761,18 +2801,55 @@ static int start_unit(sd_bus *bus, char **args) {
         return r;
 }
 
+static int logind_set_wall_message(void) {
+#ifdef HAVE_LOGIND
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        sd_bus *bus;
+        _cleanup_free_ char *m = NULL;
+        int r;
+
+        r = acquire_bus(BUS_FULL, &bus);
+        if (r < 0)
+                return r;
+
+        m = strv_join(arg_wall, " ");
+        if (!m)
+                return log_oom();
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "SetWallMessage",
+                        &error,
+                        NULL,
+                        "sb",
+                        m,
+                        !arg_no_wall);
+
+        if (r < 0)
+                return log_warning_errno(r, "Failed to set wall message, ignoring: %s", bus_error_message(&error, r));
+
+#endif
+        return 0;
+}
+
 /* Ask systemd-logind, which might grant access to unprivileged users
  * through PolicyKit */
-static int reboot_with_logind(sd_bus *bus, enum action a) {
+static int logind_reboot(enum action a) {
 #ifdef HAVE_LOGIND
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         const char *method, *description;
+        sd_bus *bus;
         int r;
 
-        if (!bus)
-                return -EIO;
-
         polkit_agent_open_if_enabled();
+        (void) logind_set_wall_message();
+
+        r = acquire_bus(BUS_FULL, &bus);
+        if (r < 0)
+                return r;
 
         switch (a) {
 
@@ -2805,33 +2882,6 @@ static int reboot_with_logind(sd_bus *bus, enum action a) {
                 return -EINVAL;
         }
 
-        if (!strv_isempty(arg_wall)) {
-                _cleanup_free_ char *m;
-
-                m = strv_join(arg_wall, " ");
-                if (!m)
-                        return log_oom();
-
-                r = sd_bus_call_method(
-                               bus,
-                               "org.freedesktop.login1",
-                               "/org/freedesktop/login1",
-                               "org.freedesktop.login1.Manager",
-                               "SetWallMessage",
-                               &error,
-                               NULL,
-                               "sb",
-                               m,
-                               !arg_no_wall);
-
-                if (r < 0) {
-                        log_warning_errno(r, "Failed to set wall message, ignoring: %s",
-                                          bus_error_message(&error, r));
-                        sd_bus_error_free(&error);
-                }
-        }
-
-
         r = sd_bus_call_method(
                         bus,
                         "org.freedesktop.login1",
@@ -2842,27 +2892,25 @@ static int reboot_with_logind(sd_bus *bus, enum action a) {
                         NULL,
                         "b", arg_ask_password);
         if (r < 0)
-                log_error("Failed to %s via logind: %s", description, bus_error_message(&error, r));
+                return log_error_errno(r, "Failed to %s via logind: %s", description, bus_error_message(&error, r));
 
-        return r;
+        return 0;
 #else
         return -ENOSYS;
 #endif
 }
 
-static int check_inhibitors(sd_bus *bus, enum action a) {
+static int logind_check_inhibitors(enum action a) {
 #ifdef HAVE_LOGIND
         _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;
+        sd_bus *bus;
         unsigned c = 0;
         char **s;
         int r;
 
-        if (!bus)
-                return 0;
-
         if (arg_ignore_inhibitors || arg_force > 0)
                 return 0;
 
@@ -2875,6 +2923,10 @@ static int check_inhibitors(sd_bus *bus, enum action a) {
         if (!on_tty())
                 return 0;
 
+        r = acquire_bus(BUS_FULL, &bus);
+        if (r < 0)
+                return r;
+
         r = sd_bus_call_method(
                         bus,
                         "org.freedesktop.login1",
@@ -2964,10 +3016,36 @@ static int check_inhibitors(sd_bus *bus, enum action a) {
 #endif
 }
 
-static int prepare_firmware_setup(sd_bus *bus) {
+static int logind_prepare_firmware_setup(void) {
 #ifdef HAVE_LOGIND
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        sd_bus *bus;
+        int r;
+
+        r = acquire_bus(BUS_FULL, &bus);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "SetRebootToFirmwareSetup",
+                        &error,
+                        NULL,
+                        "b", true);
+        if (r < 0)
+                return log_error_errno(r, "Cannot indicate to EFI to boot into setup mode: %s", bus_error_message(&error, r));
+
+        return 0;
+#else
+        log_error("Cannot remotely indicate to EFI to boot into setup mode.");
+        return -ENOSYS;
 #endif
+}
+
+static int prepare_firmware_setup(void) {
         int r;
 
         if (!arg_firmware_setup)
@@ -2982,38 +3060,42 @@ static int prepare_firmware_setup(sd_bus *bus) {
                         return r;
         }
 
-#ifdef HAVE_LOGIND
+        return logind_prepare_firmware_setup();
+}
+
+static int set_exit_code(uint8_t code) {
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        sd_bus *bus;
+        int r;
+
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         r = sd_bus_call_method(
                         bus,
-                        "org.freedesktop.login1",
-                        "/org/freedesktop/login1",
-                        "org.freedesktop.login1.Manager",
-                        "SetRebootToFirmwareSetup",
+                        "org.freedesktop.systemd1",
+                        "/org/freedesktop/systemd1",
+                        "org.freedesktop.systemd1.Manager",
+                        "SetExitCode",
                         &error,
                         NULL,
-                        "b", true);
-        if (r < 0) {
-                log_error("Cannot indicate to EFI to boot into setup mode: %s", bus_error_message(&error, r));
-                return r;
-        }
+                        "y", code);
+        if (r < 0)
+                return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r));
 
         return 0;
-#else
-        log_error("Cannot remotely indicate to EFI to boot into setup mode.");
-        return -EINVAL;
-#endif
 }
 
-static int start_special(sd_bus *bus, char **args) {
-        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+static int start_special(int argc, char *argv[], void *userdata) {
         enum action a;
         int r;
 
-        assert(args);
+        assert(argv);
 
-        a = verb_to_action(args[0]);
+        a = verb_to_action(argv[0]);
 
-        r = check_inhibitors(bus, a);
+        r = logind_check_inhibitors(a);
         if (r < 0)
                 return r;
 
@@ -3022,39 +3104,29 @@ static int start_special(sd_bus *bus, char **args) {
                 return -EPERM;
         }
 
-        r = prepare_firmware_setup(bus);
+        r = prepare_firmware_setup();
         if (r < 0)
                 return r;
 
-        if (a == ACTION_REBOOT && args[1]) {
-                r = update_reboot_param_file(args[1]);
+        if (a == ACTION_REBOOT && argc > 1) {
+                r = update_reboot_param_file(argv[1]);
                 if (r < 0)
                         return r;
-        } else if (a == ACTION_EXIT && strv_length(args) > 1) {
-                /* If the exit code is not given on the command line, don't
-                 * reset it to zero: just keep it as it might have been set
-                 * previously. */
-                uint8_t code = 0;
 
-                r = safe_atou8(args[1], &code);
-                if (r < 0) {
-                        log_error("Invalid exit code.");
-                        return -EINVAL;
-                }
+        } else if (a == ACTION_EXIT && argc > 1) {
+                uint8_t code;
 
-                r = sd_bus_call_method(
-                                bus,
-                                "org.freedesktop.systemd1",
-                                "/org/freedesktop/systemd1",
-                                "org.freedesktop.systemd1.Manager",
-                                "SetExitCode",
-                                &error,
-                                NULL,
-                                "y", code);
-                if (r < 0) {
-                        log_error("Failed to execute operation: %s", bus_error_message(&error, r));
+                /* If the exit code is not given on the command line,
+                 * don't reset it to zero: just keep it as it might
+                 * have been set previously. */
+
+                r = safe_atou8(argv[1], &code);
+                if (r < 0)
+                        return log_error_errno(r, "Invalid exit code.");
+
+                r = set_exit_code(code);
+                if (r < 0)
                         return r;
-                }
         }
 
         if (arg_force >= 2 &&
@@ -3071,40 +3143,38 @@ static int start_special(sd_bus *bus, char **args) {
                    ACTION_REBOOT,
                    ACTION_KEXEC,
                    ACTION_EXIT))
-                return daemon_reload(bus, args);
+                return daemon_reload(argc, argv, userdata);
 
-        /* first try logind, to allow authentication with polkit */
-        if (geteuid() != 0 &&
-            IN_SET(a,
+        /* First try logind, to allow authentication with polkit */
+        if (IN_SET(a,
                    ACTION_POWEROFF,
                    ACTION_REBOOT,
                    ACTION_SUSPEND,
                    ACTION_HIBERNATE,
                    ACTION_HYBRID_SLEEP)) {
-                r = reboot_with_logind(bus, a);
+                r = logind_reboot(a);
                 if (r >= 0)
                         return r;
                 if (IN_SET(r, -EOPNOTSUPP, -EINPROGRESS))
                         /* requested operation is not supported or already in progress */
                         return r;
-                /* on all other errors, try low-level operation */
-        }
 
-        r = start_unit(bus, args);
-        if (r == EXIT_SUCCESS)
-                warn_wall(a);
+                /* On all other errors, try low-level operation */
+        }
 
-        return r;
+        return start_unit(argc, argv, userdata);
 }
 
-static int check_unit_generic(sd_bus *bus, int code, const char *good_states, char **args) {
+static int check_unit_generic(int code, const char *good_states, char **args) {
         _cleanup_strv_free_ char **names = NULL;
+        sd_bus *bus;
         char **name;
         int r;
 
-        assert(bus);
-        assert(args);
-
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         r = expand_names(bus, args, NULL, &names);
         if (r < 0)
                 return log_error_errno(r, "Failed to expand names: %m");
@@ -3122,25 +3192,27 @@ static int check_unit_generic(sd_bus *bus, int code, const char *good_states, ch
         return r;
 }
 
-static int check_unit_active(sd_bus *bus, char **args) {
+static int check_unit_active(int argc, char *argv[], void *userdata) {
         /* According to LSB: 3, "program is not running" */
-        return check_unit_generic(bus, 3, "active\0reloading\0", args + 1);
+        return check_unit_generic(3, "active\0reloading\0", strv_skip(argv, 1));
 }
 
-static int check_unit_failed(sd_bus *bus, char **args) {
-        return check_unit_generic(bus, 1, "failed\0", args + 1);
+static int check_unit_failed(int argc, char *argv[], void *userdata) {
+        return check_unit_generic(1, "failed\0", strv_skip(argv, 1));
 }
 
-static int kill_unit(sd_bus *bus, char **args) {
+static int kill_unit(int argc, char *argv[], void *userdata) {
         _cleanup_strv_free_ char **names = NULL;
         char *kill_who = NULL, **name;
+        sd_bus *bus;
         int r, q;
 
-        assert(bus);
-        assert(args);
-
         polkit_agent_open_if_enabled();
 
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         if (!arg_kill_who)
                 arg_kill_who = "all";
 
@@ -3148,9 +3220,9 @@ static int kill_unit(sd_bus *bus, char **args) {
         if (streq(arg_job_mode, "fail"))
                 kill_who = strjoina(arg_kill_who, "-fail", NULL);
 
-        r = expand_names(bus, args + 1, NULL, &names);
+        r = expand_names(bus, strv_skip(argv, 1), NULL, &names);
         if (r < 0)
-                log_error_errno(r, "Failed to expand names: %m");
+                return log_error_errno(r, "Failed to expand names: %m");
 
         STRV_FOREACH(name, names) {
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
@@ -3165,7 +3237,7 @@ static int kill_unit(sd_bus *bus, char **args) {
                                 NULL,
                                 "ssi", *names, kill_who ? kill_who : arg_kill_who, arg_signal);
                 if (q < 0) {
-                        log_error("Failed to kill unit %s: %s", *names, bus_error_message(&error, q));
+                        log_error_errno(q, "Failed to kill unit %s: %s", *names, bus_error_message(&error, q));
                         if (r == 0)
                                 r = q;
                 }
@@ -3355,10 +3427,10 @@ static void print_status_info(
 
         if (streq_ptr(i->active_state, "failed")) {
                 active_on = ansi_highlight_red();
-                active_off = ansi_highlight_off();
+                active_off = ansi_normal();
         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
                 active_on = ansi_highlight_green();
-                active_off = ansi_highlight_off();
+                active_off = ansi_normal();
         } else
                 active_on = active_off = "";
 
@@ -3374,7 +3446,7 @@ static void print_status_info(
 
         if (streq_ptr(i->load_state, "error")) {
                 on = ansi_highlight_red();
-                off = ansi_highlight_off();
+                off = ansi_normal();
         } else
                 on = off = "";
 
@@ -3455,8 +3527,8 @@ static void print_status_info(
                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
 
                 printf("Condition: start %scondition failed%s at %s%s%s\n",
-                       ansi_highlight_yellow(), ansi_highlight_off(),
-                       s2, s1 ? "; " : "", s1 ? s1 : "");
+                       ansi_highlight_yellow(), ansi_normal(),
+                       s2, s1 ? "; " : "", strempty(s1));
                 if (i->failed_condition_trigger)
                         printf("           none of the trigger conditions were met\n");
                 else if (i->failed_condition)
@@ -3471,8 +3543,8 @@ static void print_status_info(
                 s2 = format_timestamp(since2, sizeof(since2), i->assert_timestamp);
 
                 printf("   Assert: start %sassertion failed%s at %s%s%s\n",
-                       ansi_highlight_red(), ansi_highlight_off(),
-                       s2, s1 ? "; " : "", s1 ? s1 : "");
+                       ansi_highlight_red(), ansi_normal(),
+                       s2, s1 ? "; " : "", strempty(s1));
                 if (i->failed_assert_trigger)
                         printf("           none of the trigger assertions were met\n");
                 else if (i->failed_assert)
@@ -3512,7 +3584,7 @@ static void print_status_info(
                 good = is_clean_exit_lsb(p->code, p->status, NULL);
                 if (!good) {
                         on = ansi_highlight_red();
-                        off = ansi_highlight_off();
+                        off = ansi_normal();
                 } else
                         on = off = "";
 
@@ -3861,13 +3933,13 @@ static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *
 
                                 info->name = strdup(name);
                                 if (!info->name)
-                                        log_oom();
+                                        return log_oom();
 
                                 LIST_PREPEND(exec, i->exec, info);
 
                                 info = new0(ExecStatusInfo, 1);
                                 if (!info)
-                                        log_oom();
+                                        return log_oom();
                         }
 
                         if (r < 0)
@@ -4439,10 +4511,8 @@ static int get_unit_dbus_path_by_pid(
                         &error,
                         &reply,
                         "u", pid);
-        if (r < 0) {
-                log_error("Failed to get unit for PID %"PRIu32": %s", pid, bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get unit for PID %"PRIu32": %s", pid, bus_error_message(&error, r));
 
         r = sd_bus_message_read(reply, "o", &u);
         if (r < 0)
@@ -4513,10 +4583,10 @@ static int show_system_status(sd_bus *bus) {
 
         if (streq_ptr(mi.state, "degraded")) {
                 on = ansi_highlight_red();
-                off = ansi_highlight_off();
+                off = ansi_normal();
         } else if (!streq_ptr(mi.state, "running")) {
                 on = ansi_highlight_yellow();
-                off = ansi_highlight_off();
+                off = ansi_normal();
         } else
                 on = off = "";
 
@@ -4551,16 +4621,22 @@ static int show_system_status(sd_bus *bus) {
         return 0;
 }
 
-static int show(sd_bus *bus, char **args) {
-        bool show_properties, show_status, new_line = false;
+static int show(int argc, char *argv[], void *userdata) {
+        bool show_properties, show_status, show_help, new_line = false;
         bool ellipsized = false;
         int r, ret = 0;
+        sd_bus *bus;
 
-        assert(bus);
-        assert(args);
+        assert(argv);
 
-        show_properties = streq(args[0], "show");
-        show_status = streq(args[0], "status");
+        show_properties = streq(argv[0], "show");
+        show_status = streq(argv[0], "status");
+        show_help = streq(argv[0], "help");
+
+        if (show_help && argc <= 1) {
+                log_error("This command expects one or more unit names. Did you mean --help?");
+                return -EINVAL;
+        }
 
         if (show_properties)
                 pager_open_if_enabled();
@@ -4571,24 +4647,27 @@ static int show(sd_bus *bus, char **args) {
                  * be split up into many files. */
                 setrlimit_closest(RLIMIT_NOFILE, &RLIMIT_MAKE_CONST(16384));
 
-        /* If no argument is specified inspect the manager itself */
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
 
-        if (show_properties && strv_length(args) <= 1)
-                return show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line, &ellipsized);
+        /* If no argument is specified inspect the manager itself */
+        if (show_properties && argc <= 1)
+                return show_one(argv[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line, &ellipsized);
 
-        if (show_status && strv_length(args) <= 1) {
+        if (show_status && argc <= 1) {
 
                 pager_open_if_enabled();
                 show_system_status(bus);
                 new_line = true;
 
                 if (arg_all)
-                        ret = show_all(args[0], bus, false, &new_line, &ellipsized);
+                        ret = show_all(argv[0], bus, false, &new_line, &ellipsized);
         } else {
                 _cleanup_free_ char **patterns = NULL;
                 char **name;
 
-                STRV_FOREACH(name, args + 1) {
+                STRV_FOREACH(name, strv_skip(argv, 1)) {
                         _cleanup_free_ char *unit = NULL;
                         uint32_t id;
 
@@ -4611,8 +4690,7 @@ static int show(sd_bus *bus, char **args) {
                                 }
                         }
 
-                        r = show_one(args[0], bus, unit, show_properties,
-                                     &new_line, &ellipsized);
+                        r = show_one(argv[0], bus, unit, show_properties, &new_line, &ellipsized);
                         if (r < 0)
                                 return r;
                         else if (r > 0 && ret == 0)
@@ -4624,7 +4702,7 @@ static int show(sd_bus *bus, char **args) {
 
                         r = expand_names(bus, patterns, NULL, &names);
                         if (r < 0)
-                                log_error_errno(r, "Failed to expand names: %m");
+                                return log_error_errno(r, "Failed to expand names: %m");
 
                         STRV_FOREACH(name, names) {
                                 _cleanup_free_ char *unit;
@@ -4633,8 +4711,7 @@ static int show(sd_bus *bus, char **args) {
                                 if (!unit)
                                         return log_oom();
 
-                                r = show_one(args[0], bus, unit, show_properties,
-                                             &new_line, &ellipsized);
+                                r = show_one(argv[0], bus, unit, show_properties, &new_line, &ellipsized);
                                 if (r < 0)
                                         return r;
                                 else if (r > 0 && ret == 0)
@@ -4688,25 +4765,24 @@ static int cat_file(const char *filename, bool newline) {
                newline ? "\n" : "",
                ansi_highlight_blue(),
                filename,
-               ansi_highlight_off());
+               ansi_normal());
         fflush(stdout);
 
         return copy_bytes(fd, STDOUT_FILENO, (uint64_t) -1, false);
 }
 
-static int cat(sd_bus *bus, char **args) {
+static int cat(int argc, char *argv[], void *userdata) {
         _cleanup_free_ char *user_home = NULL;
         _cleanup_free_ char *user_runtime = NULL;
         _cleanup_lookup_paths_free_ LookupPaths lp = {};
         _cleanup_strv_free_ char **names = NULL;
         char **name;
-        bool first = true, avoid_bus_cache;
+        sd_bus *bus;
+        bool first = true;
         int r;
 
-        assert(args);
-
         if (arg_transport != BUS_TRANSPORT_LOCAL) {
-                log_error("Cannot remotely cat units");
+                log_error("Cannot remotely cat units.");
                 return -EINVAL;
         }
 
@@ -4714,11 +4790,13 @@ static int cat(sd_bus *bus, char **args) {
         if (r < 0)
                 return r;
 
-        r = expand_names(bus, args + 1, NULL, &names);
+        r = acquire_bus(BUS_MANAGER, &bus);
         if (r < 0)
-                return log_error_errno(r, "Failed to expand names: %m");
+                return r;
 
-        avoid_bus_cache = !bus || avoid_bus();
+        r = expand_names(bus, strv_skip(argv, 1), NULL, &names);
+        if (r < 0)
+                return log_error_errno(r, "Failed to expand names: %m");
 
         pager_open_if_enabled();
 
@@ -4727,7 +4805,7 @@ static int cat(sd_bus *bus, char **args) {
                 _cleanup_strv_free_ char **dropin_paths = NULL;
                 char **path;
 
-                r = unit_find_paths(bus, *name, avoid_bus_cache, &lp, &fragment_path, &dropin_paths);
+                r = unit_find_paths(bus, *name, &lp, &fragment_path, &dropin_paths);
                 if (r < 0)
                         return r;
                 else if (r == 0)
@@ -4754,15 +4832,20 @@ static int cat(sd_bus *bus, char **args) {
         return 0;
 }
 
-static int set_property(sd_bus *bus, char **args) {
+static int set_property(int argc, char *argv[], void *userdata) {
         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         _cleanup_free_ char *n = NULL;
+        sd_bus *bus;
         char **i;
         int r;
 
         polkit_agent_open_if_enabled();
 
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         r = sd_bus_message_new_method_call(
                         bus,
                         &m,
@@ -4773,7 +4856,7 @@ static int set_property(sd_bus *bus, char **args) {
         if (r < 0)
                 return bus_log_create_error(r);
 
-        r = unit_name_mangle(args[1], UNIT_NAME_NOGLOB, &n);
+        r = unit_name_mangle(argv[1], UNIT_NAME_NOGLOB, &n);
         if (r < 0)
                 return log_error_errno(r, "Failed to mangle unit name: %m");
 
@@ -4785,7 +4868,7 @@ static int set_property(sd_bus *bus, char **args) {
         if (r < 0)
                 return bus_log_create_error(r);
 
-        STRV_FOREACH(i, args + 2) {
+        STRV_FOREACH(i, strv_skip(argv, 2)) {
                 r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv");
                 if (r < 0)
                         return bus_log_create_error(r);
@@ -4804,25 +4887,24 @@ static int set_property(sd_bus *bus, char **args) {
                 return bus_log_create_error(r);
 
         r = sd_bus_call(bus, m, 0, &error, NULL);
-        if (r < 0) {
-                log_error("Failed to set unit properties on %s: %s", n, bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to set unit properties on %s: %s", n, bus_error_message(&error, r));
 
         return 0;
 }
 
-static int snapshot(sd_bus *bus, char **args) {
+static int snapshot(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;
         _cleanup_free_ char *n = NULL, *id = NULL;
         const char *path;
+        sd_bus *bus;
         int r;
 
         polkit_agent_open_if_enabled();
 
-        if (strv_length(args) > 1) {
-                r = unit_name_mangle_with_suffix(args[1], UNIT_NAME_NOGLOB, ".snapshot", &n);
+        if (argc > 1) {
+                r = unit_name_mangle_with_suffix(argv[1], UNIT_NAME_NOGLOB, ".snapshot", &n);
                 if (r < 0)
                         return log_error_errno(r, "Failed to generate unit name: %m");
         } else {
@@ -4831,6 +4913,10 @@ static int snapshot(sd_bus *bus, char **args) {
                         return log_oom();
         }
 
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         r = sd_bus_call_method(
                         bus,
                         "org.freedesktop.systemd1",
@@ -4840,10 +4926,8 @@ static int snapshot(sd_bus *bus, char **args) {
                         &error,
                         &reply,
                         "sb", n, false);
-        if (r < 0) {
-                log_error("Failed to create snapshot: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to create snapshot: %s", bus_error_message(&error, r));
 
         r = sd_bus_message_read(reply, "o", &path);
         if (r < 0)
@@ -4857,10 +4941,8 @@ static int snapshot(sd_bus *bus, char **args) {
                         "Id",
                         &error,
                         &id);
-        if (r < 0) {
-                log_error("Failed to get ID of snapshot: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get ID of snapshot: %s", bus_error_message(&error, r));
 
         if (!arg_quiet)
                 puts(id);
@@ -4868,18 +4950,21 @@ static int snapshot(sd_bus *bus, char **args) {
         return 0;
 }
 
-static int delete_snapshot(sd_bus *bus, char **args) {
+static int delete_snapshot(int argc, char *argv[], void *userdata) {
         _cleanup_strv_free_ char **names = NULL;
+        sd_bus *bus;
         char **name;
         int r;
 
-        assert(args);
-
         polkit_agent_open_if_enabled();
 
-        r = expand_names(bus, args + 1, ".snapshot", &names);
+        r = acquire_bus(BUS_MANAGER, &bus);
         if (r < 0)
-                log_error_errno(r, "Failed to expand names: %m");
+                return r;
+
+        r = expand_names(bus, strv_skip(argv, 1), ".snapshot", &names);
+        if (r < 0)
+                return log_error_errno(r, "Failed to expand names: %m");
 
         STRV_FOREACH(name, names) {
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
@@ -4895,7 +4980,7 @@ static int delete_snapshot(sd_bus *bus, char **args) {
                                 NULL,
                                 "s", *name);
                 if (q < 0) {
-                        log_error("Failed to remove snapshot %s: %s", *name, bus_error_message(&error, q));
+                        log_error_errno(q, "Failed to remove snapshot %s: %s", *name, bus_error_message(&error, q));
                         if (r == 0)
                                 r = q;
                 }
@@ -4904,13 +4989,18 @@ static int delete_snapshot(sd_bus *bus, char **args) {
         return r;
 }
 
-static int daemon_reload(sd_bus *bus, char **args) {
+static int daemon_reload(int argc, char *argv[], void *userdata) {
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         const char *method;
+        sd_bus *bus;
         int r;
 
         polkit_agent_open_if_enabled();
 
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         if (arg_action == ACTION_RELOAD)
                 method = "Reload";
         else if (arg_action == ACTION_REEXEC)
@@ -4919,15 +5009,15 @@ static int daemon_reload(sd_bus *bus, char **args) {
                 assert(arg_action == ACTION_SYSTEMCTL);
 
                 method =
-                        streq(args[0], "clear-jobs")    ||
-                        streq(args[0], "cancel")        ? "ClearJobs" :
-                        streq(args[0], "daemon-reexec") ? "Reexecute" :
-                        streq(args[0], "reset-failed")  ? "ResetFailed" :
-                        streq(args[0], "halt")          ? "Halt" :
-                        streq(args[0], "poweroff")      ? "PowerOff" :
-                        streq(args[0], "reboot")        ? "Reboot" :
-                        streq(args[0], "kexec")         ? "KExec" :
-                        streq(args[0], "exit")          ? "Exit" :
+                        streq(argv[0], "clear-jobs")    ||
+                        streq(argv[0], "cancel")        ? "ClearJobs" :
+                        streq(argv[0], "daemon-reexec") ? "Reexecute" :
+                        streq(argv[0], "reset-failed")  ? "ResetFailed" :
+                        streq(argv[0], "halt")          ? "Halt" :
+                        streq(argv[0], "poweroff")      ? "PowerOff" :
+                        streq(argv[0], "reboot")        ? "Reboot" :
+                        streq(argv[0], "kexec")         ? "KExec" :
+                        streq(argv[0], "exit")          ? "Exit" :
                                     /* "daemon-reload" */ "Reload";
         }
 
@@ -4949,24 +5039,29 @@ static int daemon_reload(sd_bus *bus, char **args) {
                  * reply */
                 r = 0;
         else if (r < 0)
-                log_error("Failed to execute operation: %s", bus_error_message(&error, r));
+                return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r));
 
         return r < 0 ? r : 0;
 }
 
-static int reset_failed(sd_bus *bus, char **args) {
+static int reset_failed(int argc, char *argv[], void *userdata) {
         _cleanup_strv_free_ char **names = NULL;
+        sd_bus *bus;
         char **name;
         int r, q;
 
-        if (strv_length(args) <= 1)
-                return daemon_reload(bus, args);
+        if (argc <= 1)
+                return daemon_reload(argc, argv, userdata);
 
         polkit_agent_open_if_enabled();
 
-        r = expand_names(bus, args + 1, NULL, &names);
+        r = acquire_bus(BUS_MANAGER, &bus);
         if (r < 0)
-                log_error_errno(r, "Failed to expand names: %m");
+                return r;
+
+        r = expand_names(bus, strv_skip(argv, 1), NULL, &names);
+        if (r < 0)
+                return log_error_errno(r, "Failed to expand names: %m");
 
         STRV_FOREACH(name, names) {
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
@@ -4981,7 +5076,7 @@ static int reset_failed(sd_bus *bus, char **args) {
                                 NULL,
                                 "s", *name);
                 if (q < 0) {
-                        log_error("Failed to reset failed state of unit %s: %s", *name, bus_error_message(&error, q));
+                        log_error_errno(q, "Failed to reset failed state of unit %s: %s", *name, bus_error_message(&error, q));
                         if (r == 0)
                                 r = q;
                 }
@@ -4990,14 +5085,19 @@ static int reset_failed(sd_bus *bus, char **args) {
         return r;
 }
 
-static int show_environment(sd_bus *bus, char **args) {
+static int show_environment(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;
         const char *text;
+        sd_bus *bus;
         int r;
 
         pager_open_if_enabled();
 
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         r = sd_bus_get_property(
                         bus,
                         "org.freedesktop.systemd1",
@@ -5007,10 +5107,8 @@ static int show_environment(sd_bus *bus, char **args) {
                         &error,
                         &reply,
                         "as");
-        if (r < 0) {
-                log_error("Failed to get environment: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get environment: %s", bus_error_message(&error, r));
 
         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s");
         if (r < 0)
@@ -5028,23 +5126,27 @@ static int show_environment(sd_bus *bus, char **args) {
         return 0;
 }
 
-static int switch_root(sd_bus *bus, char **args) {
+static int switch_root(int argc, char *argv[], void *userdata) {
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         _cleanup_free_ char *cmdline_init = NULL;
         const char *root, *init;
-        unsigned l;
+        sd_bus *bus;
         int r;
 
-        l = strv_length(args);
-        if (l < 2 || l > 3) {
+        if (arg_transport != BUS_TRANSPORT_LOCAL) {
+                log_error("Cannot switch root remotely.");
+                return -EINVAL;
+        }
+
+        if (argc < 2 || argc > 3) {
                 log_error("Wrong number of arguments.");
                 return -EINVAL;
         }
 
-        root = args[1];
+        root = argv[1];
 
-        if (l >= 3)
-                init = args[2];
+        if (argc >= 3)
+                init = argv[2];
         else {
                 r = parse_env_file("/proc/cmdline", WHITESPACE,
                                    "init", &cmdline_init,
@@ -5070,6 +5172,10 @@ static int switch_root(sd_bus *bus, char **args) {
                         init = NULL;
         }
 
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         log_debug("Switching root - root: %s; init: %s", root, strna(init));
 
         r = sd_bus_call_method(
@@ -5081,26 +5187,29 @@ static int switch_root(sd_bus *bus, char **args) {
                         &error,
                         NULL,
                         "ss", root, init);
-        if (r < 0) {
-                log_error("Failed to switch root: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to switch root: %s", bus_error_message(&error, r));
 
         return 0;
 }
 
-static int set_environment(sd_bus *bus, char **args) {
+static int set_environment(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 *m = NULL;
         const char *method;
+        sd_bus *bus;
         int r;
 
-        assert(bus);
-        assert(args);
+        assert(argc > 1);
+        assert(argv);
 
         polkit_agent_open_if_enabled();
 
-        method = streq(args[0], "set-environment")
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        method = streq(argv[0], "set-environment")
                 ? "SetEnvironment"
                 : "UnsetEnvironment";
 
@@ -5114,29 +5223,29 @@ static int set_environment(sd_bus *bus, char **args) {
         if (r < 0)
                 return bus_log_create_error(r);
 
-        r = sd_bus_message_append_strv(m, args + 1);
+        r = sd_bus_message_append_strv(m, strv_skip(argv, 1));
         if (r < 0)
                 return bus_log_create_error(r);
 
         r = sd_bus_call(bus, m, 0, &error, NULL);
-        if (r < 0) {
-                log_error("Failed to set environment: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to set environment: %s", bus_error_message(&error, r));
 
         return 0;
 }
 
-static int import_environment(sd_bus *bus, char **args) {
+static int import_environment(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 *m = NULL;
+        sd_bus *bus;
         int r;
 
-        assert(bus);
-        assert(args);
-
         polkit_agent_open_if_enabled();
 
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         r = sd_bus_message_new_method_call(
                         bus,
                         &m,
@@ -5147,7 +5256,7 @@ static int import_environment(sd_bus *bus, char **args) {
         if (r < 0)
                 return bus_log_create_error(r);
 
-        if (strv_isempty(args + 1))
+        if (argc < 2)
                 r = sd_bus_message_append_strv(m, environ);
         else {
                 char **a, **b;
@@ -5156,7 +5265,7 @@ static int import_environment(sd_bus *bus, char **args) {
                 if (r < 0)
                         return bus_log_create_error(r);
 
-                STRV_FOREACH(a, args + 1) {
+                STRV_FOREACH(a, strv_skip(argv, 1)) {
 
                         if (!env_name_is_valid(*a)) {
                                 log_error("Not a valid environment variable name: %s", *a);
@@ -5184,10 +5293,8 @@ static int import_environment(sd_bus *bus, char **args) {
                 return bus_log_create_error(r);
 
         r = sd_bus_call(bus, m, 0, &error, NULL);
-        if (r < 0) {
-                log_error("Failed to import environment: %s", bus_error_message(&error, r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to import environment: %s", bus_error_message(&error, r));
 
         return 0;
 }
@@ -5290,13 +5397,13 @@ static int enable_sysv_units(const char *verb, char **args) {
                         (void) reset_signal_mask();
 
                         execv(argv[0], (char**) argv);
-                        log_error("Failed to execute %s: %m", argv[0]);
+                        log_error_errno(r, "Failed to execute %s: %m", argv[0]);
                         _exit(EXIT_FAILURE);
                 }
 
                 j = wait_for_terminate(pid, &status);
                 if (j < 0) {
-                        log_error_errno(r, "Failed to wait for child: %m");
+                        log_error_errno(j, "Failed to wait for child: %m");
                         return j;
                 }
 
@@ -5366,18 +5473,18 @@ static int mangle_names(char **original_names, char ***mangled_names) {
         return 0;
 }
 
-static int enable_unit(sd_bus *bus, char **args) {
+static int enable_unit(int argc, char *argv[], void *userdata) {
         _cleanup_strv_free_ char **names = NULL;
-        const char *verb = args[0];
+        const char *verb = argv[0];
         UnitFileChange *changes = NULL;
         unsigned n_changes = 0;
         int carries_install_info = -1;
         int r;
 
-        if (!args[1])
+        if (!argv[1])
                 return 0;
 
-        r = mangle_names(args+1, &names);
+        r = mangle_names(strv_skip(argv, 1), &names);
         if (r < 0)
                 return r;
 
@@ -5390,7 +5497,7 @@ static int enable_unit(sd_bus *bus, char **args) {
         if (strv_isempty(names))
                 return 0;
 
-        if (!bus || avoid_bus()) {
+        if (install_client_side()) {
                 if (streq(verb, "enable")) {
                         r = unit_file_enable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
                         carries_install_info = r;
@@ -5426,9 +5533,14 @@ static int enable_unit(sd_bus *bus, char **args) {
                 int expect_carries_install_info = false;
                 bool send_force = true, send_preset_mode = false;
                 const char *method;
+                sd_bus *bus;
 
                 polkit_agent_open_if_enabled();
 
+                r = acquire_bus(BUS_MANAGER, &bus);
+                if (r < 0)
+                        return r;
+
                 if (streq(verb, "enable")) {
                         method = "EnableUnitFiles";
                         expect_carries_install_info = true;
@@ -5488,10 +5600,8 @@ static int enable_unit(sd_bus *bus, char **args) {
                 }
 
                 r = sd_bus_call(bus, m, 0, &error, &reply);
-                if (r < 0) {
-                        log_error("Failed to execute operation: %s", bus_error_message(&error, r));
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r));
 
                 if (expect_carries_install_info) {
                         r = sd_bus_message_read(reply, "b", &carries_install_info);
@@ -5505,7 +5615,7 @@ static int enable_unit(sd_bus *bus, char **args) {
 
                 /* Try to reload if enabled */
                 if (!arg_no_reload)
-                        r = daemon_reload(bus, args);
+                        r = daemon_reload(argc, argv, userdata);
                 else
                         r = 0;
         }
@@ -5521,16 +5631,21 @@ static int enable_unit(sd_bus *bus, char **args) {
                             "3) A unit may be started when needed via activation (socket, path, timer,\n"
                             "   D-Bus, udev, scripted systemctl call, ...).\n");
 
-        if (arg_now && n_changes > 0 && STR_IN_SET(args[0], "enable", "disable", "mask")) {
+        if (arg_now && n_changes > 0 && STR_IN_SET(argv[0], "enable", "disable", "mask")) {
                 char *new_args[n_changes + 2];
+                sd_bus *bus;
                 unsigned i;
 
-                new_args[0] = streq(args[0], "enable") ? (char *)"start" : (char *)"stop";
+                r = acquire_bus(BUS_MANAGER, &bus);
+                if (r < 0)
+                        return r;
+
+                new_args[0] = (char*) (streq(argv[0], "enable") ? "start" : "stop");
                 for (i = 0; i < n_changes; i++)
                         new_args[i + 1] = basename(changes[i].path);
                 new_args[i + 1] = NULL;
 
-                r = start_unit(bus, new_args);
+                r = start_unit(strv_length(new_args), new_args, userdata);
         }
 
 finish:
@@ -5539,21 +5654,21 @@ finish:
         return r;
 }
 
-static int add_dependency(sd_bus *bus, char **args) {
+static int add_dependency(int argc, char *argv[], void *userdata) {
         _cleanup_strv_free_ char **names = NULL;
         _cleanup_free_ char *target = NULL;
-        const char *verb = args[0];
+        const char *verb = argv[0];
         UnitDependency dep;
         int r = 0;
 
-        if (!args[1])
+        if (!argv[1])
                 return 0;
 
-        r = unit_name_mangle_with_suffix(args[1], UNIT_NAME_NOGLOB, ".target", &target);
+        r = unit_name_mangle_with_suffix(argv[1], UNIT_NAME_NOGLOB, ".target", &target);
         if (r < 0)
                 return log_error_errno(r, "Failed to mangle unit name: %m");
 
-        r = mangle_names(args+2, &names);
+        r = mangle_names(strv_skip(argv, 2), &names);
         if (r < 0)
                 return r;
 
@@ -5564,7 +5679,7 @@ static int add_dependency(sd_bus *bus, char **args) {
         else
                 assert_not_reached("Unknown verb");
 
-        if (!bus || avoid_bus()) {
+        if (install_client_side()) {
                 UnitFileChange *changes = NULL;
                 unsigned n_changes = 0;
 
@@ -5581,9 +5696,14 @@ static int add_dependency(sd_bus *bus, char **args) {
         } else {
                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+                sd_bus *bus;
 
                 polkit_agent_open_if_enabled();
 
+                r = acquire_bus(BUS_MANAGER, &bus);
+                if (r < 0)
+                        return r;
+
                 r = sd_bus_message_new_method_call(
                                 bus,
                                 &m,
@@ -5603,17 +5723,15 @@ static int add_dependency(sd_bus *bus, char **args) {
                         return bus_log_create_error(r);
 
                 r = sd_bus_call(bus, m, 0, &error, &reply);
-                if (r < 0) {
-                        log_error("Failed to execute operation: %s", bus_error_message(&error, r));
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r));
 
                 r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, NULL, NULL);
                 if (r < 0)
                         return r;
 
                 if (!arg_no_reload)
-                        r = daemon_reload(bus, args);
+                        r = daemon_reload(argc, argv, userdata);
                 else
                         r = 0;
         }
@@ -5621,12 +5739,12 @@ static int add_dependency(sd_bus *bus, char **args) {
         return r;
 }
 
-static int preset_all(sd_bus *bus, char **args) {
+static int preset_all(int argc, char *argv[], void *userdata) {
         UnitFileChange *changes = NULL;
         unsigned n_changes = 0;
         int r;
 
-        if (!bus || avoid_bus()) {
+        if (install_client_side()) {
 
                 r = unit_file_preset_all(arg_scope, arg_runtime, arg_root, arg_preset_mode, arg_force, &changes, &n_changes);
                 if (r < 0) {
@@ -5642,9 +5760,14 @@ static int preset_all(sd_bus *bus, char **args) {
         } else {
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+                sd_bus *bus;
 
                 polkit_agent_open_if_enabled();
 
+                r = acquire_bus(BUS_MANAGER, &bus);
+                if (r < 0)
+                        return r;
+
                 r = sd_bus_call_method(
                                 bus,
                                 "org.freedesktop.systemd1",
@@ -5657,17 +5780,15 @@ static int preset_all(sd_bus *bus, char **args) {
                                 unit_file_preset_mode_to_string(arg_preset_mode),
                                 arg_runtime,
                                 arg_force);
-                if (r < 0) {
-                        log_error("Failed to execute operation: %s", bus_error_message(&error, r));
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r));
 
                 r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, NULL, NULL);
                 if (r < 0)
                         return r;
 
                 if (!arg_no_reload)
-                        r = daemon_reload(bus, args);
+                        r = daemon_reload(argc, argv, userdata);
                 else
                         r = 0;
         }
@@ -5678,25 +5799,24 @@ finish:
         return r;
 }
 
-static int unit_is_enabled(sd_bus *bus, char **args) {
+static int unit_is_enabled(int argc, char *argv[], void *userdata) {
 
-        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         _cleanup_strv_free_ char **names = NULL;
         bool enabled;
         char **name;
         int r;
 
-        r = mangle_names(args+1, &names);
+        r = mangle_names(strv_skip(argv, 1), &names);
         if (r < 0)
                 return r;
 
-        r = enable_sysv_units(args[0], names);
+        r = enable_sysv_units(argv[0], names);
         if (r < 0)
                 return r;
 
         enabled = r > 0;
 
-        if (!bus || avoid_bus()) {
+        if (install_client_side()) {
 
                 STRV_FOREACH(name, names) {
                         UnitFileState state;
@@ -5717,6 +5837,13 @@ static int unit_is_enabled(sd_bus *bus, char **args) {
                 }
 
         } else {
+                _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+                sd_bus *bus;
+
+                r = acquire_bus(BUS_MANAGER, &bus);
+                if (r < 0)
+                        return r;
+
                 STRV_FOREACH(name, names) {
                         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
                         const char *s;
@@ -5730,10 +5857,8 @@ static int unit_is_enabled(sd_bus *bus, char **args) {
                                         &error,
                                         &reply,
                                         "s", *name);
-                        if (r < 0) {
-                                log_error("Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r));
-                                return r;
-                        }
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r));
 
                         r = sd_bus_message_read(reply, "s", &s);
                         if (r < 0)
@@ -5750,10 +5875,21 @@ static int unit_is_enabled(sd_bus *bus, char **args) {
         return !enabled;
 }
 
-static int is_system_running(sd_bus *bus, char **args) {
+static int is_system_running(int argc, char *argv[], void *userdata) {
         _cleanup_free_ char *state = NULL;
+        sd_bus *bus;
         int r;
 
+        if (arg_transport == BUS_TRANSPORT_LOCAL && !sd_booted()) {
+                if (!arg_quiet)
+                        puts("offline");
+                return EXIT_FAILURE;
+        }
+
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
         r = sd_bus_get_property_string(
                         bus,
                         "org.freedesktop.systemd1",
@@ -5775,7 +5911,7 @@ static int is_system_running(sd_bus *bus, char **args) {
 }
 
 static int create_edit_temp_file(const char *new_path, const char *original_path, char **ret_tmp_fn) {
-        char *t;
+        _cleanup_free_ char *t = NULL;
         int r;
 
         assert(new_path);
@@ -5787,27 +5923,21 @@ static int create_edit_temp_file(const char *new_path, const char *original_path
                 return log_error_errno(r, "Failed to determine temporary filename for \"%s\": %m", new_path);
 
         r = mkdir_parents(new_path, 0755);
-        if (r < 0) {
-                log_error_errno(r, "Failed to create directories for \"%s\": %m", new_path);
-                free(t);
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to create directories for \"%s\": %m", new_path);
 
         r = copy_file(original_path, t, 0, 0644, 0);
         if (r == -ENOENT) {
+
                 r = touch(t);
-                if (r < 0) {
-                        log_error_errno(r, "Failed to create temporary file \"%s\": %m", t);
-                        free(t);
-                        return r;
-                }
-        } else if (r < 0) {
-                log_error_errno(r, "Failed to copy \"%s\" to \"%s\": %m", original_path, t);
-                free(t);
-                return r;
-        }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to create temporary file \"%s\": %m", t);
+
+        } else if (r < 0)
+                return log_error_errno(r, "Failed to copy \"%s\" to \"%s\": %m", original_path, t);
 
         *ret_tmp_fn = t;
+        t = NULL;
 
         return 0;
 }
@@ -5815,6 +5945,9 @@ static int create_edit_temp_file(const char *new_path, const char *original_path
 static int get_file_to_edit(const char *name, const char *user_home, const char *user_runtime, char **ret_path) {
         _cleanup_free_ char *path = NULL, *path2 = NULL, *run = NULL;
 
+        assert(name);
+        assert(ret_path);
+
         switch (arg_scope) {
                 case UNIT_FILE_SYSTEM:
                         path = path_join(arg_root, SYSTEM_CONFIG_UNIT_PATH, name);
@@ -5845,12 +5978,16 @@ static int get_file_to_edit(const char *name, const char *user_home, const char
                 return log_oom();
 
         if (arg_runtime) {
-                if (access(path, F_OK) >= 0)
-                        return log_error_errno(EEXIST, "Refusing to create \"%s\" because it would be overridden by \"%s\" anyway.",
-                                               run, path);
-                if (path2 && access(path2, F_OK) >= 0)
-                        return log_error_errno(EEXIST, "Refusing to create \"%s\" because it would be overridden by \"%s\" anyway.",
-                                               run, path2);
+                if (access(path, F_OK) >= 0) {
+                        log_error("Refusing to create \"%s\" because it would be overridden by \"%s\" anyway.", run, path);
+                        return -EEXIST;
+                }
+
+                if (path2 && access(path2, F_OK) >= 0) {
+                        log_error("Refusing to create \"%s\" because it would be overridden by \"%s\" anyway.", run, path2);
+                        return -EEXIST;
+                }
+
                 *ret_path = run;
                 run = NULL;
         } else {
@@ -5862,8 +5999,7 @@ static int get_file_to_edit(const char *name, const char *user_home, const char
 }
 
 static int unit_file_create_dropin(const char *unit_name, const char *user_home, const char *user_runtime, char **ret_new_path, char **ret_tmp_path) {
-        char *tmp_new_path, *ending;
-        char *tmp_tmp_path;
+        char *tmp_new_path, *tmp_tmp_path, *ending;
         int r;
 
         assert(unit_name);
@@ -5895,8 +6031,7 @@ static int unit_file_create_copy(
                 char **ret_new_path,
                 char **ret_tmp_path) {
 
-        char *tmp_new_path;
-        char *tmp_tmp_path;
+        char *tmp_new_path, *tmp_tmp_path;
         int r;
 
         assert(fragment_path);
@@ -5943,10 +6078,8 @@ static int run_editor(char **paths) {
         assert(paths);
 
         pid = fork();
-        if (pid < 0) {
-                log_error_errno(errno, "Failed to fork: %m");
-                return -errno;
-        }
+        if (pid < 0)
+                return log_error_errno(errno, "Failed to fork: %m");
 
         if (pid == 0) {
                 const char **args;
@@ -6004,7 +6137,7 @@ static int run_editor(char **paths) {
                          * failing.
                          */
                         if (errno != ENOENT) {
-                                log_error("Failed to execute %s: %m", editor);
+                                log_error_errno(errno, "Failed to execute %s: %m", editor);
                                 _exit(EXIT_FAILURE);
                         }
                 }
@@ -6017,14 +6150,13 @@ static int run_editor(char **paths) {
         if (r < 0)
                 return log_error_errno(r, "Failed to wait for child: %m");
 
-        return r;
+        return 0;
 }
 
 static int find_paths_to_edit(sd_bus *bus, char **names, char ***paths) {
         _cleanup_free_ char *user_home = NULL;
         _cleanup_free_ char *user_runtime = NULL;
         _cleanup_lookup_paths_free_ LookupPaths lp = {};
-        bool avoid_bus_cache;
         char **name;
         int r;
 
@@ -6035,13 +6167,11 @@ static int find_paths_to_edit(sd_bus *bus, char **names, char ***paths) {
         if (r < 0)
                 return r;
 
-        avoid_bus_cache = !bus || avoid_bus();
-
         STRV_FOREACH(name, names) {
                 _cleanup_free_ char *path = NULL;
                 char *new_path, *tmp_path;
 
-                r = unit_find_paths(bus, *name, avoid_bus_cache, &lp, &path, NULL);
+                r = unit_find_paths(bus, *name, &lp, &path, NULL);
                 if (r < 0)
                         return r;
                 else if (r == 0)
@@ -6067,25 +6197,28 @@ static int find_paths_to_edit(sd_bus *bus, char **names, char ***paths) {
         return 0;
 }
 
-static int edit(sd_bus *bus, char **args) {
+static int edit(int argc, char *argv[], void *userdata) {
         _cleanup_strv_free_ char **names = NULL;
         _cleanup_strv_free_ char **paths = NULL;
         char **original, **tmp;
+        sd_bus *bus;
         int r;
 
-        assert(args);
-
         if (!on_tty()) {
-                log_error("Cannot edit units if not on a tty");
+                log_error("Cannot edit units if not on a tty.");
                 return -EINVAL;
         }
 
         if (arg_transport != BUS_TRANSPORT_LOCAL) {
-                log_error("Cannot remotely edit units");
+                log_error("Cannot edit units remotely.");
                 return -EINVAL;
         }
 
-        r = expand_names(bus, args + 1, NULL, &names);
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        r = expand_names(bus, strv_skip(argv, 1), NULL, &names);
         if (r < 0)
                 return log_error_errno(r, "Failed to expand names: %m");
 
@@ -6101,13 +6234,14 @@ static int edit(sd_bus *bus, char **args) {
                 goto end;
 
         STRV_FOREACH_PAIR(original, tmp, paths) {
-                /* If the temporary file is empty we ignore it.
-                 * It's useful if the user wants to cancel its modification
+                /* If the temporary file is empty we ignore it.  It's
+                 * useful if the user wants to cancel its modification
                  */
                 if (null_or_empty_path(*tmp)) {
-                        log_warning("Editing \"%s\" canceled: temporary file is empty", *original);
+                        log_warning("Editing \"%s\" canceled: temporary file is empty.", *original);
                         continue;
                 }
+
                 r = rename(*tmp, *original);
                 if (r < 0) {
                         r = log_error_errno(errno, "Failed to rename \"%s\" to \"%s\": %m", *tmp, *original);
@@ -6115,12 +6249,14 @@ static int edit(sd_bus *bus, char **args) {
                 }
         }
 
-        if (!arg_no_reload && bus && !avoid_bus())
-                r = daemon_reload(bus, args);
+        r = 0;
+
+        if (!arg_no_reload && !install_client_side())
+                r = daemon_reload(argc, argv, userdata);
 
 end:
         STRV_FOREACH_PAIR(original, tmp, paths)
-                unlink_noerrno(*tmp);
+                (void) unlink(*tmp);
 
         return r;
 }
@@ -6314,15 +6450,90 @@ static void runlevel_help(void) {
 
 static void help_types(void) {
         int i;
-        const char *t;
 
         if (!arg_no_legend)
                 puts("Available unit types:");
-        for (i = 0; i < _UNIT_TYPE_MAX; i++) {
-                t = unit_type_to_string(i);
-                if (t)
-                        puts(t);
-        }
+        for (i = 0; i < _UNIT_TYPE_MAX; i++)
+                puts(unit_type_to_string(i));
+}
+
+static void help_states(void) {
+        int i;
+
+        if (!arg_no_legend)
+                puts("Available unit load states:");
+        for (i = 0; i < _UNIT_LOAD_STATE_MAX; i++)
+                puts(unit_load_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable unit active states:");
+        for (i = 0; i < _UNIT_ACTIVE_STATE_MAX; i++)
+                puts(unit_active_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable automount unit substates:");
+        for (i = 0; i < _AUTOMOUNT_STATE_MAX; i++)
+                puts(automount_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable busname unit substates:");
+        for (i = 0; i < _BUSNAME_STATE_MAX; i++)
+                puts(busname_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable device unit substates:");
+        for (i = 0; i < _DEVICE_STATE_MAX; i++)
+                puts(device_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable mount unit substates:");
+        for (i = 0; i < _MOUNT_STATE_MAX; i++)
+                puts(mount_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable path unit substates:");
+        for (i = 0; i < _PATH_STATE_MAX; i++)
+                puts(path_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable scope unit substates:");
+        for (i = 0; i < _SCOPE_STATE_MAX; i++)
+                puts(scope_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable service unit substates:");
+        for (i = 0; i < _SERVICE_STATE_MAX; i++)
+                puts(service_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable slice unit substates:");
+        for (i = 0; i < _SLICE_STATE_MAX; i++)
+                puts(slice_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable snapshot unit substates:");
+        for (i = 0; i < _SNAPSHOT_STATE_MAX; i++)
+                puts(snapshot_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable socket unit substates:");
+        for (i = 0; i < _SOCKET_STATE_MAX; i++)
+                puts(socket_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable swap unit substates:");
+        for (i = 0; i < _SWAP_STATE_MAX; i++)
+                puts(swap_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable target unit substates:");
+        for (i = 0; i < _TARGET_STATE_MAX; i++)
+                puts(target_state_to_string(i));
+
+        if (!arg_no_legend)
+                puts("\nAvailable timer unit substates:");
+        for (i = 0; i < _TIMER_STATE_MAX; i++)
+                puts(timer_state_to_string(i));
 }
 
 static int systemctl_parse_argv(int argc, char *argv[]) {
@@ -6405,7 +6616,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                 {}
         };
 
-        int c;
+        int c, r;
 
         assert(argc >= 0);
         assert(argv);
@@ -6422,9 +6633,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         return 0;
 
                 case ARG_VERSION:
-                        puts(PACKAGE_STRING);
-                        puts(SYSTEMD_FEATURES);
-                        return 0;
+                        return version();
 
                 case 't': {
                         const char *word, *state;
@@ -6443,7 +6652,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                                 }
 
                                 if (unit_type_from_string(type) >= 0) {
-                                        if (strv_push(&arg_types, type))
+                                        if (strv_push(&arg_types, type) < 0)
                                                 return log_oom();
                                         type = NULL;
                                         continue;
@@ -6453,7 +6662,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                                  * load states, but let's support this
                                  * in --types= too for compatibility
                                  * with old versions */
-                                if (unit_load_state_from_string(optarg) >= 0) {
+                                if (unit_load_state_from_string(type) >= 0) {
                                         if (strv_push(&arg_states, type) < 0)
                                                 return log_oom();
                                         type = NULL;
@@ -6564,7 +6773,9 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         break;
 
                 case ARG_ROOT:
-                        arg_root = optarg;
+                        r = parse_path_argument_and_warn(optarg, true, &arg_root);
+                        if (r < 0)
+                                return r;
                         break;
 
                 case 'l':
@@ -6598,7 +6809,8 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         break;
 
                 case 's':
-                        if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
+                        arg_signal = signal_from_string_try_harder(optarg);
+                        if (arg_signal < 0) {
                                 log_error("Failed to parse signal string %s.", optarg);
                                 return -EINVAL;
                         }
@@ -6654,14 +6866,21 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         size_t size;
 
                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
-                                char *s;
+                                _cleanup_free_ char *s = NULL;
 
                                 s = strndup(word, size);
                                 if (!s)
                                         return log_oom();
 
-                                if (strv_consume(&arg_states, s) < 0)
+                                if (streq(s, "help")) {
+                                        help_states();
+                                        return 0;
+                                }
+
+                                if (strv_push(&arg_states, s) < 0)
                                         return log_oom();
+
+                                s = NULL;
                         }
                         break;
                 }
@@ -6800,7 +7019,7 @@ static int halt_parse_argv(int argc, char *argv[]) {
         return 1;
 }
 
-static int parse_time_spec(const char *t, usec_t *_u) {
+static int parse_shutdown_time_spec(const char *t, usec_t *_u) {
         assert(t);
         assert(_u);
 
@@ -6866,12 +7085,13 @@ static int shutdown_parse_argv(int argc, char *argv[]) {
                 {}
         };
 
+        char **wall = NULL;
         int c, r;
 
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "HPrhkKt:afFc", options, NULL)) >= 0)
+        while ((c = getopt_long(argc, argv, "HPrhkKtafFc", options, NULL)) >= 0)
                 switch (c) {
 
                 case ARG_HELP:
@@ -6929,7 +7149,7 @@ static int shutdown_parse_argv(int argc, char *argv[]) {
                 }
 
         if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) {
-                r = parse_time_spec(argv[optind], &arg_when);
+                r = parse_shutdown_time_spec(argv[optind], &arg_when);
                 if (r < 0) {
                         log_error("Failed to parse time specification: %s", argv[optind]);
                         return r;
@@ -6939,10 +7159,16 @@ static int shutdown_parse_argv(int argc, char *argv[]) {
 
         if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN)
                 /* No time argument for shutdown cancel */
-                arg_wall = argv + optind;
+                wall = argv + optind;
         else if (argc > optind + 1)
                 /* We skip the time argument */
-                arg_wall = argv + optind + 1;
+                wall = argv + optind + 1;
+
+        if (wall) {
+                arg_wall = strv_copy(wall);
+                if (!arg_wall)
+                        return log_oom();
+        }
 
         optind = argc;
 
@@ -7006,8 +7232,7 @@ static int telinit_parse_argv(int argc, char *argv[]) {
                 }
 
         if (optind >= argc) {
-                log_error("%s: required argument missing.",
-                          program_invocation_short_name);
+                log_error("%s: required argument missing.", program_invocation_short_name);
                 return -EINVAL;
         }
 
@@ -7142,7 +7367,7 @@ _pure_ static int action_to_runlevel(void) {
 }
 
 static int talk_initctl(void) {
-
+#ifdef HAVE_SYSV_COMPAT
         struct init_request request = {
                 .magic = INIT_MAGIC,
                 .sleeptime  = 0,
@@ -7164,8 +7389,7 @@ static int talk_initctl(void) {
                 if (errno == ENOENT)
                         return 0;
 
-                log_error_errno(errno, "Failed to open "INIT_FIFO": %m");
-                return -errno;
+                return log_error_errno(errno, "Failed to open "INIT_FIFO": %m");
         }
 
         r = loop_write(fd, &request, sizeof(request), false);
@@ -7173,177 +7397,91 @@ static int talk_initctl(void) {
                 return log_error_errno(r, "Failed to write to "INIT_FIFO": %m");
 
         return 1;
+#else
+        return 0;
+#endif
 }
 
-static int systemctl_main(sd_bus *bus, int argc, char *argv[], int bus_error) {
-
-        static const struct {
-                const char* verb;
-                const enum {
-                        MORE,
-                        LESS,
-                        EQUAL
-                } argc_cmp;
-                const int argc;
-                int (* const dispatch)(sd_bus *bus, char **args);
-                const enum {
-                        NOBUS = 1,
-                        FORCE,
-                } bus;
-        } verbs[] = {
-                { "list-units",            MORE,  0, list_units        },
-                { "list-unit-files",       MORE,  1, list_unit_files,  NOBUS },
-                { "list-sockets",          MORE,  1, list_sockets      },
-                { "list-timers",           MORE,  1, list_timers       },
-                { "list-jobs",             MORE,  1, list_jobs         },
-                { "list-machines",         MORE,  1, list_machines     },
-                { "clear-jobs",            EQUAL, 1, daemon_reload     },
-                { "cancel",                MORE,  2, cancel_job        },
-                { "start",                 MORE,  2, start_unit        },
-                { "stop",                  MORE,  2, start_unit        },
-                { "condstop",              MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
-                { "reload",                MORE,  2, start_unit        },
-                { "restart",               MORE,  2, start_unit        },
-                { "try-restart",           MORE,  2, start_unit        },
-                { "reload-or-restart",     MORE,  2, start_unit        },
-                { "reload-or-try-restart", MORE,  2, start_unit        },
-                { "force-reload",          MORE,  2, start_unit        }, /* For compatibility with SysV */
-                { "condreload",            MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
-                { "condrestart",           MORE,  2, start_unit        }, /* For compatibility with RH */
-                { "isolate",               EQUAL, 2, start_unit        },
-                { "kill",                  MORE,  2, kill_unit         },
-                { "is-active",             MORE,  2, check_unit_active },
-                { "check",                 MORE,  2, check_unit_active },
-                { "is-failed",             MORE,  2, check_unit_failed },
-                { "show",                  MORE,  1, show              },
-                { "cat",                   MORE,  2, cat,              NOBUS },
-                { "status",                MORE,  1, show              },
-                { "help",                  MORE,  2, show              },
-                { "snapshot",              LESS,  2, snapshot          },
-                { "delete",                MORE,  2, delete_snapshot   },
-                { "daemon-reload",         EQUAL, 1, daemon_reload     },
-                { "daemon-reexec",         EQUAL, 1, daemon_reload     },
-                { "show-environment",      EQUAL, 1, show_environment  },
-                { "set-environment",       MORE,  2, set_environment   },
-                { "unset-environment",     MORE,  2, set_environment   },
-                { "import-environment",    MORE,  1, import_environment},
-                { "halt",                  EQUAL, 1, start_special,    FORCE },
-                { "poweroff",              EQUAL, 1, start_special,    FORCE },
-                { "reboot",                MORE,  1, start_special,    FORCE },
-                { "kexec",                 EQUAL, 1, start_special     },
-                { "suspend",               EQUAL, 1, start_special     },
-                { "hibernate",             EQUAL, 1, start_special     },
-                { "hybrid-sleep",          EQUAL, 1, start_special     },
-                { "default",               EQUAL, 1, start_special     },
-                { "rescue",                EQUAL, 1, start_special     },
-                { "emergency",             EQUAL, 1, start_special     },
-                { "exit",                  LESS,  2, start_special     },
-                { "reset-failed",          MORE,  1, reset_failed      },
-                { "enable",                MORE,  2, enable_unit,      NOBUS },
-                { "disable",               MORE,  2, enable_unit,      NOBUS },
-                { "is-enabled",            MORE,  2, unit_is_enabled,  NOBUS },
-                { "reenable",              MORE,  2, enable_unit,      NOBUS },
-                { "preset",                MORE,  2, enable_unit,      NOBUS },
-                { "preset-all",            EQUAL, 1, preset_all,       NOBUS },
-                { "mask",                  MORE,  2, enable_unit,      NOBUS },
-                { "unmask",                MORE,  2, enable_unit,      NOBUS },
-                { "link",                  MORE,  2, enable_unit,      NOBUS },
-                { "switch-root",           MORE,  2, switch_root       },
-                { "list-dependencies",     LESS,  2, list_dependencies },
-                { "set-default",           EQUAL, 2, set_default,      NOBUS },
-                { "get-default",           EQUAL, 1, get_default,      NOBUS },
-                { "set-property",          MORE,  3, set_property      },
-                { "is-system-running",     EQUAL, 1, is_system_running },
-                { "add-wants",             MORE,  3, add_dependency,   NOBUS },
-                { "add-requires",          MORE,  3, add_dependency,   NOBUS },
-                { "edit",                  MORE,  2, edit,             NOBUS },
+static int systemctl_main(int argc, char *argv[]) {
+
+        static const Verb verbs[] = {
+                { "list-units",            VERB_ANY, VERB_ANY, VERB_DEFAULT, list_units        },
+                { "list-unit-files",       VERB_ANY, VERB_ANY, 0,            list_unit_files   },
+                { "list-sockets",          VERB_ANY, VERB_ANY, 0,            list_sockets      },
+                { "list-timers",           VERB_ANY, VERB_ANY, 0,            list_timers       },
+                { "list-jobs",             VERB_ANY, VERB_ANY, 0,            list_jobs         },
+                { "list-machines",         VERB_ANY, VERB_ANY, 0,            list_machines     },
+                { "clear-jobs",            VERB_ANY, 1,        0,            daemon_reload     },
+                { "cancel",                2,        VERB_ANY, 0,            cancel_job        },
+                { "start",                 2,        VERB_ANY, 0,            start_unit        },
+                { "stop",                  2,        VERB_ANY, 0,            start_unit        },
+                { "condstop",              2,        VERB_ANY, 0,            start_unit        }, /* For compatibility with ALTLinux */
+                { "reload",                2,        VERB_ANY, 0,            start_unit        },
+                { "restart",               2,        VERB_ANY, 0,            start_unit        },
+                { "try-restart",           2,        VERB_ANY, 0,            start_unit        },
+                { "reload-or-restart",     2,        VERB_ANY, 0,            start_unit        },
+                { "reload-or-try-restart", 2,        VERB_ANY, 0,            start_unit        },
+                { "force-reload",          2,        VERB_ANY, 0,            start_unit        }, /* For compatibility with SysV */
+                { "condreload",            2,        VERB_ANY, 0,            start_unit        }, /* For compatibility with ALTLinux */
+                { "condrestart",           2,        VERB_ANY, 0,            start_unit        }, /* For compatibility with RH */
+                { "isolate",               2,        2,        0,            start_unit        },
+                { "kill",                  2,        VERB_ANY, 0,            kill_unit         },
+                { "is-active",             2,        VERB_ANY, 0,            check_unit_active },
+                { "check",                 2,        VERB_ANY, 0,            check_unit_active },
+                { "is-failed",             2,        VERB_ANY, 0,            check_unit_failed },
+                { "show",                  VERB_ANY, VERB_ANY, 0,            show              },
+                { "cat",                   2,        VERB_ANY, 0,            cat               },
+                { "status",                VERB_ANY, VERB_ANY, 0,            show              },
+                { "help",                  VERB_ANY, VERB_ANY, 0,            show              },
+                { "snapshot",              VERB_ANY, 2,        0,            snapshot          },
+                { "delete",                2,        VERB_ANY, 0,            delete_snapshot   },
+                { "daemon-reload",         VERB_ANY, 1,        0,            daemon_reload     },
+                { "daemon-reexec",         VERB_ANY, 1,        0,            daemon_reload     },
+                { "show-environment",      VERB_ANY, 1,        0,            show_environment  },
+                { "set-environment",       2,        VERB_ANY, 0,            set_environment   },
+                { "unset-environment",     2,        VERB_ANY, 0,            set_environment   },
+                { "import-environment",    VERB_ANY, VERB_ANY, 0,            import_environment},
+                { "halt",                  VERB_ANY, 1,        0,            start_special     },
+                { "poweroff",              VERB_ANY, 1,        0,            start_special     },
+                { "reboot",                VERB_ANY, 2,        0,            start_special     },
+                { "kexec",                 VERB_ANY, 1,        0,            start_special     },
+                { "suspend",               VERB_ANY, 1,        0,            start_special     },
+                { "hibernate",             VERB_ANY, 1,        0,            start_special     },
+                { "hybrid-sleep",          VERB_ANY, 1,        0,            start_special     },
+                { "default",               VERB_ANY, 1,        0,            start_special     },
+                { "rescue",                VERB_ANY, 1,        0,            start_special     },
+                { "emergency",             VERB_ANY, 1,        0,            start_special     },
+                { "exit",                  VERB_ANY, 2,        0,            start_special     },
+                { "reset-failed",          VERB_ANY, VERB_ANY, 0,            reset_failed      },
+                { "enable",                2,        VERB_ANY, 0,            enable_unit       },
+                { "disable",               2,        VERB_ANY, 0,            enable_unit       },
+                { "is-enabled",            2,        VERB_ANY, 0,            unit_is_enabled   },
+                { "reenable",              2,        VERB_ANY, 0,            enable_unit       },
+                { "preset",                2,        VERB_ANY, 0,            enable_unit       },
+                { "preset-all",            VERB_ANY, 1,        0,            preset_all        },
+                { "mask",                  2,        VERB_ANY, 0,            enable_unit       },
+                { "unmask",                2,        VERB_ANY, 0,            enable_unit       },
+                { "link",                  2,        VERB_ANY, 0,            enable_unit       },
+                { "switch-root",           2,        VERB_ANY, 0,            switch_root       },
+                { "list-dependencies",     VERB_ANY, 2,        0,            list_dependencies },
+                { "set-default",           2,        2,        0,            set_default       },
+                { "get-default",           VERB_ANY, 1,        0,            get_default,      },
+                { "set-property",          3,        VERB_ANY, 0,            set_property      },
+                { "is-system-running",     VERB_ANY, 1,        0,            is_system_running },
+                { "add-wants",             3,        VERB_ANY, 0,            add_dependency    },
+                { "add-requires",          3,        VERB_ANY, 0,            add_dependency    },
+                { "edit",                  2,        VERB_ANY, 0,            edit              },
                 {}
-        }, *verb = verbs;
-
-        int left;
-
-        assert(argc >= 0);
-        assert(argv);
-
-        left = argc - optind;
-
-        /* Special rule: no arguments (left == 0) means "list-units" */
-        if (left > 0) {
-                if (streq(argv[optind], "help") && !argv[optind+1]) {
-                        log_error("This command expects one or more "
-                                  "unit names. Did you mean --help?");
-                        return -EINVAL;
-                }
-
-                for (; verb->verb; verb++)
-                        if (streq(argv[optind], verb->verb))
-                                goto found;
-
-                log_error("Unknown operation '%s'.", argv[optind]);
-                return -EINVAL;
-        }
-found:
-
-        switch (verb->argc_cmp) {
-
-        case EQUAL:
-                if (left != verb->argc) {
-                        log_error("Invalid number of arguments.");
-                        return -EINVAL;
-                }
-
-                break;
-
-        case MORE:
-                if (left < verb->argc) {
-                        log_error("Too few arguments.");
-                        return -EINVAL;
-                }
-
-                break;
-
-        case LESS:
-                if (left > verb->argc) {
-                        log_error("Too many arguments.");
-                        return -EINVAL;
-                }
-
-                break;
-
-        default:
-                assert_not_reached("Unknown comparison operator.");
-        }
-
-        /* Require a bus connection for all operations but
-         * enable/disable */
-        if (verb->bus == NOBUS) {
-                if (!bus && !avoid_bus()) {
-                        log_error_errno(bus_error, "Failed to get D-Bus connection: %m");
-                        return -EIO;
-                }
-
-        } else {
-                if (running_in_chroot() > 0) {
-                        log_info("Running in chroot, ignoring request.");
-                        return 0;
-                }
-
-                if ((verb->bus != FORCE || arg_force <= 0) && !bus) {
-                        log_error_errno(bus_error, "Failed to get D-Bus connection: %m");
-                        return -EIO;
-                }
-        }
+        };
 
-        return verb->dispatch(bus, argv + optind);
+        return dispatch_verb(argc, argv, verbs, NULL);
 }
 
-static int reload_with_fallback(sd_bus *bus) {
+static int reload_with_fallback(void) {
 
-        if (bus) {
-                /* First, try systemd via D-Bus. */
-                if (daemon_reload(bus, NULL) >= 0)
-                        return 0;
-        }
+        /* First, try systemd via D-Bus. */
+        if (daemon_reload(0, NULL, NULL) >= 0)
+                return 0;
 
         /* Nothing else worked, so let's try signals */
         assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
@@ -7354,25 +7492,19 @@ static int reload_with_fallback(sd_bus *bus) {
         return 0;
 }
 
-static int start_with_fallback(sd_bus *bus) {
+static int start_with_fallback(void) {
 
-        if (bus) {
-                /* First, try systemd via D-Bus. */
-                if (start_unit(bus, NULL) >= 0)
-                        goto done;
-        }
+        /* First, try systemd via D-Bus. */
+        if (start_unit(0, NULL, NULL) >= 0)
+                return 0;
 
         /* Nothing else worked, so let's try
          * /dev/initctl */
         if (talk_initctl() > 0)
-                goto done;
+                return 0;
 
         log_error("Failed to talk to init daemon.");
         return -EIO;
-
-done:
-        warn_wall(arg_action);
-        return 0;
 }
 
 static int halt_now(enum action a) {
@@ -7380,22 +7512,22 @@ static int halt_now(enum action a) {
         /* The kernel will automaticall flush ATA disks and suchlike
          * on reboot(), but the file systems need to be synce'd
          * explicitly in advance. */
-        sync();
+        (void) sync();
 
         /* Make sure C-A-D is handled by the kernel from this point
          * on... */
-        reboot(RB_ENABLE_CAD);
+        (void) reboot(RB_ENABLE_CAD);
 
         switch (a) {
 
         case ACTION_HALT:
                 log_info("Halting.");
-                reboot(RB_HALT_SYSTEM);
+                (void) reboot(RB_HALT_SYSTEM);
                 return -errno;
 
         case ACTION_POWEROFF:
                 log_info("Powering off.");
-                reboot(RB_POWER_OFF);
+                (void) reboot(RB_POWER_OFF);
                 return -errno;
 
         case ACTION_KEXEC:
@@ -7404,12 +7536,11 @@ static int halt_now(enum action a) {
 
                 if (read_one_line_file(REBOOT_PARAM_FILE, &param) >= 0) {
                         log_info("Rebooting with argument '%s'.", param);
-                        syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
-                                LINUX_REBOOT_CMD_RESTART2, param);
+                        (void) syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, param);
                 }
 
                 log_info("Rebooting.");
-                reboot(RB_AUTOBOOT);
+                (void) reboot(RB_AUTOBOOT);
                 return -errno;
         }
 
@@ -7418,17 +7549,77 @@ static int halt_now(enum action a) {
         }
 }
 
-static int halt_main(sd_bus *bus) {
+static int logind_schedule_shutdown(void) {
+
+#ifdef HAVE_LOGIND
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        char date[FORMAT_TIMESTAMP_MAX];
+        const char *action;
+        sd_bus *bus;
         int r;
 
-        r = check_inhibitors(bus, arg_action);
+        (void) logind_set_wall_message();
+
+        r = acquire_bus(BUS_FULL, &bus);
         if (r < 0)
                 return r;
 
+        switch (arg_action) {
+        case ACTION_HALT:
+                action = "halt";
+                break;
+        case ACTION_POWEROFF:
+                action = "poweroff";
+                break;
+        case ACTION_KEXEC:
+                action = "kexec";
+                break;
+        case ACTION_EXIT:
+                action = "exit";
+                break;
+        case ACTION_REBOOT:
+        default:
+                action = "reboot";
+                break;
+        }
+
+        if (arg_dry)
+                action = strjoina("dry-", action);
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "ScheduleShutdown",
+                        &error,
+                        NULL,
+                        "st",
+                        action,
+                        arg_when);
+        if (r < 0)
+                return log_warning_errno(r, "Failed to call ScheduleShutdown in logind, proceeding with immediate shutdown: %s", bus_error_message(&error, r));
+
+        log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.", format_timestamp(date, sizeof(date), arg_when));
+        return 0;
+#else
+        log_error("Cannot schedule shutdown without logind support, proceeding with immediate shutdown.");
+        return -ENOSYS;
+#endif
+}
+
+static int halt_main(void) {
+        int r;
+
+        r = logind_check_inhibitors(arg_action);
+        if (r < 0)
+                return r;
+
+        if (arg_when > 0)
+                return logind_schedule_shutdown();
+
         if (geteuid() != 0) {
-                if (arg_when > 0 ||
-                    arg_dry ||
-                    arg_force > 0) {
+                if (arg_dry || arg_force > 0) {
                         log_error("Must be root.");
                         return -EPERM;
                 }
@@ -7436,101 +7627,21 @@ static int halt_main(sd_bus *bus) {
                 /* Try logind if we are a normal user and no special
                  * mode applies. Maybe PolicyKit allows us to shutdown
                  * the machine. */
-                if (IN_SET(arg_action,
-                           ACTION_POWEROFF,
-                           ACTION_REBOOT)) {
-                        r = reboot_with_logind(bus, arg_action);
+                if (IN_SET(arg_action, ACTION_POWEROFF, ACTION_REBOOT)) {
+                        r = logind_reboot(arg_action);
                         if (r >= 0)
                                 return r;
                         if (IN_SET(r, -EOPNOTSUPP, -EINPROGRESS))
-                                /* requested operation is not supported or already in progress */
+                                /* requested operation is not
+                                 * supported on the local system or
+                                 * already in progress */
                                 return r;
                         /* on all other errors, try low-level operation */
                 }
         }
 
-        if (arg_when > 0) {
-                _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-                _cleanup_bus_flush_close_unref_ sd_bus *b = NULL;
-                _cleanup_free_ char *m = NULL;
-                const char *action;
-
-                assert(geteuid() == 0);
-
-                if (avoid_bus()) {
-                        log_error("Unable to perform operation without bus connection.");
-                        return -ENOSYS;
-                }
-
-                r = sd_bus_open_system(&b);
-                if (r < 0)
-                        return log_error_errno(r, "Unable to open system bus: %m");
-
-                m = strv_join(arg_wall, " ");
-                if (!m)
-                        return log_oom();
-
-                r = sd_bus_call_method(
-                               b,
-                               "org.freedesktop.login1",
-                               "/org/freedesktop/login1",
-                               "org.freedesktop.login1.Manager",
-                               "SetWallMessage",
-                               &error,
-                               NULL,
-                               "sb",
-                               m,
-                               !arg_no_wall);
-
-                if (r < 0) {
-                        log_warning_errno(r, "Failed to set wall message, ignoring: %s",
-                                          bus_error_message(&error, r));
-                        sd_bus_error_free(&error);
-                }
-
-                switch (arg_action) {
-                case ACTION_HALT:
-                        action = "halt";
-                        break;
-                case ACTION_POWEROFF:
-                        action = "poweroff";
-                        break;
-                case ACTION_KEXEC:
-                        action = "kexec";
-                        break;
-                default:
-                        action = "reboot";
-                        break;
-                }
-
-                if (arg_dry)
-                        action = strjoina("dry-", action);
-
-                r = sd_bus_call_method(
-                                b,
-                                "org.freedesktop.login1",
-                                "/org/freedesktop/login1",
-                                "org.freedesktop.login1.Manager",
-                                "ScheduleShutdown",
-                                &error,
-                                NULL,
-                                "st",
-                                action,
-                                arg_when);
-                if (r < 0)
-                        log_warning_errno(r, "Failed to call ScheduleShutdown in logind, proceeding with immediate shutdown: %s",
-                                          bus_error_message(&error, r));
-                else {
-                        char date[FORMAT_TIMESTAMP_MAX];
-
-                        log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
-                                 format_timestamp(date, sizeof(date), arg_when));
-                        return 0;
-                }
-        }
-
         if (!arg_dry && !arg_force)
-                return start_with_fallback(bus);
+                return start_with_fallback();
 
         assert(geteuid() == 0);
 
@@ -7548,9 +7659,7 @@ static int halt_main(sd_bus *bus) {
                 return 0;
 
         r = halt_now(arg_action);
-        log_error_errno(r, "Failed to reboot: %m");
-
-        return r;
+        return log_error_errno(r, "Failed to reboot: %m");
 }
 
 static int runlevel_main(void) {
@@ -7569,8 +7678,37 @@ static int runlevel_main(void) {
         return 0;
 }
 
+static int logind_cancel_shutdown(void) {
+#ifdef HAVE_LOGIND
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        sd_bus *bus;
+        int r;
+
+        r = acquire_bus(BUS_FULL, &bus);
+        if (r < 0)
+                return r;
+
+        (void) logind_set_wall_message();
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "CancelScheduledShutdown",
+                        &error,
+                        NULL, NULL);
+        if (r < 0)
+                return log_warning_errno(r, "Failed to talk to logind, shutdown hasn't been cancelled: %s", bus_error_message(&error, r));
+
+        return 0;
+#else
+        log_error("Not compiled with logind support, cannot cancel scheduled shutdowns.");
+        return -ENOSYS;
+#endif
+}
+
 int main(int argc, char*argv[]) {
-        _cleanup_bus_flush_close_unref_ sd_bus *bus = NULL;
         int r;
 
         setlocale(LC_ALL, "");
@@ -7586,39 +7724,26 @@ int main(int argc, char*argv[]) {
         if (r <= 0)
                 goto finish;
 
-        /* /sbin/runlevel doesn't need to communicate via D-Bus, so
-         * let's shortcut this */
-        if (arg_action == ACTION_RUNLEVEL) {
-                r = runlevel_main();
-                goto finish;
-        }
-
         if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
                 log_info("Running in chroot, ignoring request.");
                 r = 0;
                 goto finish;
         }
 
-        if (!avoid_bus())
-                r = bus_open_transport_systemd(arg_transport, arg_host, arg_scope != UNIT_FILE_SYSTEM, &bus);
-
-        if (bus)
-                sd_bus_set_allow_interactive_authorization(bus, arg_ask_password);
-
         /* systemctl_main() will print an error message for the bus
          * connection, but only if it needs to */
 
         switch (arg_action) {
 
         case ACTION_SYSTEMCTL:
-                r = systemctl_main(bus, argc, argv, r);
+                r = systemctl_main(argc, argv);
                 break;
 
         case ACTION_HALT:
         case ACTION_POWEROFF:
         case ACTION_REBOOT:
         case ACTION_KEXEC:
-                r = halt_main(bus);
+                r = halt_main();
                 break;
 
         case ACTION_RUNLEVEL2:
@@ -7628,69 +7753,22 @@ int main(int argc, char*argv[]) {
         case ACTION_RESCUE:
         case ACTION_EMERGENCY:
         case ACTION_DEFAULT:
-                r = start_with_fallback(bus);
+                r = start_with_fallback();
                 break;
 
         case ACTION_RELOAD:
         case ACTION_REEXEC:
-                r = reload_with_fallback(bus);
+                r = reload_with_fallback();
                 break;
 
-        case ACTION_CANCEL_SHUTDOWN: {
-                _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-                _cleanup_bus_flush_close_unref_ sd_bus *b = NULL;
-                _cleanup_free_ char *m = NULL;
-
-                if (avoid_bus()) {
-                        log_error("Unable to perform operation without bus connection.");
-                        return -ENOSYS;
-                }
-
-                r = sd_bus_open_system(&b);
-                if (r < 0)
-                        return log_error_errno(r, "Unable to open system bus: %m");
-
-                if (arg_wall) {
-                        m = strv_join(arg_wall, " ");
-                        if (!m) {
-                                r = log_oom();
-                                goto finish;
-                        }
-                }
-
-                r = sd_bus_call_method(
-                               b,
-                               "org.freedesktop.login1",
-                               "/org/freedesktop/login1",
-                               "org.freedesktop.login1.Manager",
-                               "SetWallMessage",
-                               &error,
-                               NULL,
-                               "sb",
-                               m,
-                               !arg_no_wall);
-
-                if (r < 0) {
-                        log_warning_errno(r, "Failed to set wall message, ignoring: %s",
-                                          bus_error_message(&error, r));
-                        sd_bus_error_free(&error);
-                }
-
-                r = sd_bus_call_method(
-                                b,
-                                "org.freedesktop.login1",
-                                "/org/freedesktop/login1",
-                                "org.freedesktop.login1.Manager",
-                                "CancelScheduledShutdown",
-                                &error,
-                                NULL, NULL);
-                if (r < 0)
-                        log_warning_errno(r, "Failed to talk to logind, shutdown hasn't been cancelled: %s",
-                                          bus_error_message(&error, r));
+        case ACTION_CANCEL_SHUTDOWN:
+                r = logind_cancel_shutdown();
                 break;
-        }
 
         case ACTION_RUNLEVEL:
+                r = runlevel_main();
+                break;
+
         case _ACTION_INVALID:
         default:
                 assert_not_reached("Unknown action");
@@ -7705,5 +7783,10 @@ finish:
         strv_free(arg_states);
         strv_free(arg_properties);
 
+        strv_free(arg_wall);
+        free(arg_root);
+
+        release_busses();
+
         return r < 0 ? EXIT_FAILURE : r;
 }