chiark / gitweb /
systemctl: show unit file preset state in "systemctl status" output"
[elogind.git] / src / systemctl / systemctl.c
index 56f5084ad99068e9f35c5b019f2d402eb09a0b0e..74af7727941f94fdf48a34a2c97ccf0286643c64 100644 (file)
 #include "logs-show.h"
 #include "socket-util.h"
 #include "fileio.h"
+#include "copy.h"
 #include "env-util.h"
 #include "bus-util.h"
 #include "bus-message.h"
 #include "bus-error.h"
 #include "bus-errors.h"
+#include "copy.h"
+#include "mkdir.h"
 
 static char **arg_types = NULL;
 static char **arg_states = NULL;
@@ -137,23 +140,6 @@ static unsigned arg_lines = 10;
 static OutputMode arg_output = OUTPUT_SHORT;
 static bool arg_plain = false;
 
-static const struct {
-        const char *verb;
-        const char *method;
-} unit_actions[] = {
-        { "start",                 "StartUnit" },
-        { "stop",                  "StopUnit" },
-        { "condstop",              "StopUnit" },
-        { "reload",                "ReloadUnit" },
-        { "restart",               "RestartUnit" },
-        { "try-restart",           "TryRestartUnit" },
-        { "condrestart",           "TryRestartUnit" },
-        { "reload-or-restart",     "ReloadOrRestartUnit" },
-        { "reload-or-try-restart", "ReloadOrTryRestartUnit" },
-        { "condreload",            "ReloadOrTryRestartUnit" },
-        { "force-reload",          "ReloadOrTryRestartUnit" }
-};
-
 static bool original_stdout_is_tty;
 
 static int daemon_reload(sd_bus *bus, char **args);
@@ -318,21 +304,37 @@ static int compare_unit_info(const void *a, const void *b) {
 }
 
 static bool output_show_unit(const UnitInfo *u, char **patterns) {
-        const char *dot;
-
         if (!strv_isempty(patterns)) {
                 char **pattern;
 
                 STRV_FOREACH(pattern, patterns)
                         if (fnmatch(*pattern, u->id, FNM_NOESCAPE) == 0)
-                                return true;
+                                goto next;
                 return false;
         }
 
-        return (!arg_types || ((dot = strrchr(u->id, '.')) &&
-                               strv_find(arg_types, dot+1))) &&
-                (arg_all || !(streq(u->active_state, "inactive")
-                              || u->following[0]) || u->job_id > 0);
+next:
+        if (arg_types) {
+                const char *dot;
+
+                dot = strrchr(u->id, '.');
+                if (!dot)
+                        return false;
+
+                if (!strv_find(arg_types, dot+1))
+                        return false;
+        }
+
+        if (arg_all)
+                return true;
+
+        if (u->job_id > 0)
+                return true;
+
+        if (streq(u->active_state, "inactive") || u->following[0])
+                return false;
+
+        return true;
 }
 
 static int output_units_list(const UnitInfo *unit_infos, unsigned c) {
@@ -456,7 +458,7 @@ static int output_units_list(const UnitInfo *unit_infos, unsigned c) {
                 }
 
                 if (circle_len > 0)
-                        printf("%s%s%s", on_circle, circle ? draw_special_char(DRAW_BLACK_CIRCLE) : "  ", off_circle);
+                        printf("%s%s%s ", on_circle, circle ? draw_special_char(DRAW_BLACK_CIRCLE) : " ", off_circle);
 
                 printf("%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
                        on_active, id_len, id, off_active,
@@ -594,7 +596,7 @@ static int get_unit_list_recursive(
         assert(_unit_infos);
         assert(_machines);
 
-        replies = set_new(NULL, NULL);
+        replies = set_new(NULL);
         if (!replies)
                 return log_oom();
 
@@ -617,12 +619,12 @@ static int get_unit_list_recursive(
                         return r;
 
                 STRV_FOREACH(i, machines) {
-                        _cleanup_bus_unref_ sd_bus *container = NULL;
+                        _cleanup_bus_close_unref_ sd_bus *container = NULL;
                         int k;
 
                         r = sd_bus_open_system_container(&container, *i);
                         if (r < 0) {
-                                log_error("Failed to connect to container %s: %s", *i, strerror(-r));
+                                log_error_errno(r, "Failed to connect to container %s: %m", *i);
                                 continue;
                         }
 
@@ -1142,7 +1144,7 @@ static usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next) {
         assert(nw);
         assert(next);
 
-        if (next->monotonic != (usec_t) -1 && next->monotonic > 0) {
+        if (next->monotonic != USEC_INFINITY && next->monotonic > 0) {
                 usec_t converted;
 
                 if (next->monotonic > nw->monotonic)
@@ -1150,7 +1152,7 @@ static usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next) {
                 else
                         converted = nw->realtime - (nw->monotonic - next->monotonic);
 
-                if (next->realtime != (usec_t) -1 && next->realtime > 0)
+                if (next->realtime != USEC_INFINITY && next->realtime > 0)
                         next_elapse = MIN(converted, next->realtime);
                 else
                         next_elapse = converted;
@@ -1248,18 +1250,33 @@ static int compare_unit_file_list(const void *a, const void *b) {
 }
 
 static bool output_show_unit_file(const UnitFileList *u, char **patterns) {
-        const char *dot;
-
         if (!strv_isempty(patterns)) {
                 char **pattern;
 
                 STRV_FOREACH(pattern, patterns)
                         if (fnmatch(*pattern, basename(u->path), FNM_NOESCAPE) == 0)
-                                return true;
+                                goto next;
                 return false;
         }
 
-        return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
+next:
+        if (!strv_isempty(arg_types)) {
+                const char *dot;
+
+                dot = strrchr(u->path, '.');
+                if (!dot)
+                        return false;
+
+                if (!strv_find(arg_types, dot+1))
+                        return false;
+        }
+
+        if (!strv_isempty(arg_states)) {
+                if (!strv_find(arg_states, unit_file_state_to_string(u->state)))
+                        return false;
+        }
+
+        return true;
 }
 
 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
@@ -1338,20 +1355,21 @@ static int list_unit_files(sd_bus *bus, char **args) {
                 Iterator i;
                 unsigned n_units;
 
-                h = hashmap_new(string_hash_func, string_compare_func);
+                h = hashmap_new(&string_hash_ops);
                 if (!h)
                         return log_oom();
 
                 r = unit_file_get_list(arg_scope, arg_root, h);
                 if (r < 0) {
                         unit_file_list_free(h);
-                        log_error("Failed to get unit file list: %s", strerror(-r));
+                        log_error_errno(r, "Failed to get unit file list: %m");
                         return r;
                 }
 
                 n_units = hashmap_size(h);
+
                 units = new(UnitFileList, n_units);
-                if (!units) {
+                if (!units && n_units > 0) {
                         unit_file_list_free(h);
                         return log_oom();
                 }
@@ -1407,14 +1425,13 @@ static int list_unit_files(sd_bus *bus, char **args) {
                         return bus_log_parse_error(r);
         }
 
-        if (c > 0) {
-                qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
-                output_unit_file_list(units, c);
-        }
+        qsort_safe(units, c, sizeof(UnitFileList), compare_unit_file_list);
+        output_unit_file_list(units, c);
 
-        if (avoid_bus())
+        if (avoid_bus()) {
                 for (unit = units; unit < units + c; unit++)
                         free(unit->path);
+        }
 
         return 0;
 }
@@ -1465,11 +1482,13 @@ static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, cha
                                        "RequiresOverridable\0"
                                        "Requisite\0"
                                        "RequisiteOverridable\0"
-                                       "Wants\0",
+                                       "Wants\0"
+                                       "BindsTo\0",
                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
                                        "RequiredByOverridable\0"
                                        "WantedBy\0"
-                                       "PartOf\0",
+                                       "PartOf\0"
+                                       "BoundBy\0",
                 [DEPENDENCY_AFTER]   = "After\0",
                 [DEPENDENCY_BEFORE]  = "Before\0",
         };
@@ -1688,7 +1707,7 @@ static int compare_machine_info(const void *a, const void *b) {
 }
 
 static int get_machine_properties(sd_bus *bus, struct machine_info *mi) {
-        _cleanup_bus_unref_ sd_bus *container = NULL;
+        _cleanup_bus_close_unref_ sd_bus *container = NULL;
         int r;
 
         assert(mi);
@@ -1889,10 +1908,8 @@ static int get_default(sd_bus *bus, char **args) {
 
         if (!bus || avoid_bus()) {
                 r = unit_file_get_default(arg_scope, arg_root, &_path);
-                if (r < 0) {
-                        log_error("Failed to get default target: %s", strerror(-r));
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to get default target: %m");
                 path = _path;
 
         } else {
@@ -1928,9 +1945,9 @@ static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_cha
 
         for (i = 0; i < n_changes; i++) {
                 if (changes[i].type == UNIT_FILE_SYMLINK)
-                        log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
+                        log_info("Created symlink from %s to %s.", changes[i].path, changes[i].source);
                 else
-                        log_info("rm '%s'", changes[i].path);
+                        log_info("Removed symlink %s.", changes[i].path);
         }
 }
 
@@ -1945,9 +1962,9 @@ static int deserialize_and_dump_unit_file_changes(sd_bus_message *m) {
         while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
                 if (!arg_quiet) {
                         if (streq(type, "symlink"))
-                                log_info("ln -s '%s' '%s'", source, path);
+                                log_info("Created symlink from %s to %s.", path, source);
                         else
-                                log_info("rm '%s'", path);
+                                log_info("Removed symlink %s.", path);
                 }
         }
         if (r < 0)
@@ -1972,28 +1989,36 @@ static int set_default(sd_bus *bus, char **args) {
 
         if (!bus || avoid_bus()) {
                 r = unit_file_set_default(arg_scope, arg_root, unit, true, &changes, &n_changes);
-                if (r < 0) {
-                        log_error("Failed to set default target: %s", strerror(-r));
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to set default target: %m");
 
                 if (!arg_quiet)
                         dump_unit_file_changes(changes, n_changes);
 
                 r = 0;
         } else {
-                _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+                _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 
-                r = sd_bus_call_method(
+                r = sd_bus_message_new_method_call(
                                 bus,
+                                &m,
                                 "org.freedesktop.systemd1",
                                 "/org/freedesktop/systemd1",
                                 "org.freedesktop.systemd1.Manager",
-                                "SetDefaultTarget",
-                                &error,
-                                &reply,
-                                "sb", unit, true);
+                                "SetDefaultTarget");
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                r = sd_bus_message_append(m, "sb", unit, 1);
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                r = sd_bus_call(bus, m, 0, &error, &reply);
                 if (r < 0) {
                         log_error("Failed to set default target: %s", bus_error_message(&error, -r));
                         return r;
@@ -2160,6 +2185,7 @@ static int list_jobs(sd_bus *bus, char **args) {
 static int cancel_job(sd_bus *bus, char **args) {
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         char **name;
+        int r = 0;
 
         assert(args);
 
@@ -2167,31 +2193,41 @@ static int cancel_job(sd_bus *bus, char **args) {
                 return daemon_reload(bus, args);
 
         STRV_FOREACH(name, args+1) {
+                _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
                 uint32_t id;
-                int r;
+                int q;
 
-                r = safe_atou32(*name, &id);
-                if (r < 0) {
-                        log_error("Failed to parse job id \"%s\": %s", *name, strerror(-r));
-                        return r;
-                }
+                q = safe_atou32(*name, &id);
+                if (q < 0)
+                        return log_error_errno(q, "Failed to parse job id \"%s\": %m", *name);
 
-                r = sd_bus_call_method(
+                q = sd_bus_message_new_method_call(
                                 bus,
+                                &m,
                                 "org.freedesktop.systemd1",
                                 "/org/freedesktop/systemd1",
                                 "org.freedesktop.systemd1.Manager",
-                                "CancelJob",
-                                &error,
-                                NULL,
-                                "u", id);
-                if (r < 0) {
-                        log_error("Failed to cancel job %u: %s", (unsigned) id, bus_error_message(&error, r));
-                        return r;
+                                "CancelJob");
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+                if (q < 0)
+                        return bus_log_create_error(1);
+
+                q = sd_bus_message_append(m, "u", id);
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_call(bus, m, 0, &error, NULL);
+                if (q < 0) {
+                        log_error("Failed to cancel job %"PRIu32": %s", id, bus_error_message(&error, q));
+                        if (r == 0)
+                                r = q;
                 }
         }
 
-        return 0;
+        return r;
 }
 
 static int need_daemon_reload(sd_bus *bus, const char *unit) {
@@ -2350,9 +2386,19 @@ static int check_wait_response(WaitData *d) {
                 else if (streq(d->result, "canceled"))
                         log_error("Job for %s canceled.", strna(d->name));
                 else if (streq(d->result, "dependency"))
-                        log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d->name));
-                else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
-                        log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d->name), strna(d->name));
+                        log_error("A dependency job for %s failed. See 'journalctl -xe' for details.", strna(d->name));
+                else if (!streq(d->result, "done") && !streq(d->result, "skipped")) {
+                        if (d->name) {
+                                bool quotes;
+
+                                quotes = chars_intersect(d->name, SHELL_NEED_QUOTES);
+
+                                log_error("Job for %s failed. See \"systemctl status %s%s%s\" and \"journalctl -xe\" for details.",
+                                          d->name,
+                                          quotes ? "'" : "", d->name, quotes ? "'" : "");
+                        } else
+                                log_error("Job failed. See \"journalctl -xe\" for details.");
+                }
         }
 
         if (streq(d->result, "timeout"))
@@ -2381,10 +2427,8 @@ static int wait_for_jobs(sd_bus *bus, Set *s) {
 
         while (!set_isempty(s)) {
                 q = bus_process_wait(bus);
-                if (q < 0) {
-                        log_error("Failed to wait for response: %s", strerror(-r));
-                        return q;
-                }
+                if (q < 0)
+                        return log_error_errno(q, "Failed to wait for response: %m");
 
                 if (d.result) {
                         q = check_wait_response(&d);
@@ -2510,10 +2554,8 @@ static int check_triggering_units(
 
         STRV_FOREACH(i, triggered_by) {
                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
-                if (r < 0) {
-                        log_error("Failed to check unit: %s", strerror(-r));
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Failed to check unit: %m");
 
                 if (r == 0)
                         continue;
@@ -2529,6 +2571,23 @@ static int check_triggering_units(
         return 0;
 }
 
+static const struct {
+        const char *verb;
+        const char *method;
+} unit_actions[] = {
+        { "start",                 "StartUnit" },
+        { "stop",                  "StopUnit" },
+        { "condstop",              "StopUnit" },
+        { "reload",                "ReloadUnit" },
+        { "restart",               "RestartUnit" },
+        { "try-restart",           "TryRestartUnit" },
+        { "condrestart",           "TryRestartUnit" },
+        { "reload-or-restart",     "ReloadOrRestartUnit" },
+        { "reload-or-try-restart", "ReloadOrTryRestartUnit" },
+        { "condreload",            "ReloadOrTryRestartUnit" },
+        { "force-reload",          "ReloadOrTryRestartUnit" }
+};
+
 static const char *verb_to_method(const char *verb) {
        uint i;
 
@@ -2557,7 +2616,7 @@ static int start_unit_one(
                 sd_bus_error *error,
                 Set *s) {
 
-        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+        _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
         const char *path;
         int r;
 
@@ -2567,15 +2626,26 @@ static int start_unit_one(
         assert(error);
 
         log_debug("Calling manager for %s on %s, %s", method, name, mode);
-        r = sd_bus_call_method(
+
+        r = sd_bus_message_new_method_call(
                         bus,
+                        &m,
                         "org.freedesktop.systemd1",
                         "/org/freedesktop/systemd1",
                         "org.freedesktop.systemd1.Manager",
-                        method,
-                        error,
-                        &reply,
-                        "ss", name, mode);
+                        method);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_append(m, "ss", name, mode);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_call(bus, m, 0, error, &reply);
         if (r < 0) {
                 const char *verb;
 
@@ -2694,7 +2764,7 @@ static enum action verb_to_action(const char *verb) {
 static int start_unit(sd_bus *bus, char **args) {
         _cleanup_set_free_free_ Set *s = NULL;
         _cleanup_strv_free_ char **names = NULL;
-        const char *method, *mode, *one_name;
+        const char *method, *mode, *one_name, *suffix = NULL;
         char **name;
         int r = 0;
 
@@ -2707,8 +2777,11 @@ static int start_unit(sd_bus *bus, char **args) {
                 method = verb_to_method(args[0]);
                 action = verb_to_action(args[0]);
 
-                mode = streq(args[0], "isolate") ? "isolate" :
-                       action_table[action].mode ?: arg_job_mode;
+                if (streq(args[0], "isolate")) {
+                        mode = "isolate";
+                        suffix = ".target";
+                } else
+                        mode = action_table[action].mode ?: arg_job_mode;
 
                 one_name = action_table[action].target;
         } else {
@@ -2724,19 +2797,17 @@ 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, NULL, &names);
+                r = expand_names(bus, args + 1, suffix, &names);
                 if (r < 0)
-                        log_error("Failed to expand names: %s", strerror(-r));
+                        log_error_errno(r, "Failed to expand names: %m");
         }
 
         if (!arg_no_block) {
                 r = enable_wait_for_jobs(bus);
-                if (r < 0) {
-                        log_error("Could not watch jobs: %s", strerror(-r));
-                        return r;
-                }
+                if (r < 0)
+                        return log_error_errno(r, "Could not watch jobs: %m");
 
-                s = set_new(string_hash_func, string_compare_func);
+                s = set_new(&string_hash_ops);
                 if (!s)
                         return log_oom();
         }
@@ -2814,7 +2885,7 @@ static int reboot_with_logind(sd_bus *bus, enum action a) {
                         method,
                         &error,
                         NULL,
-                        "b", true);
+                        "b", arg_ask_password);
         if (r < 0)
                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
 
@@ -2993,10 +3064,8 @@ static int check_unit_generic(sd_bus *bus, int code, const char *good_states, ch
         assert(args);
 
         r = expand_names(bus, args, NULL, &names);
-        if (r < 0) {
-                log_error("Failed to expand names: %s", strerror(-r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to expand names: %m");
 
         STRV_FOREACH(name, names) {
                 int state;
@@ -3034,21 +3103,32 @@ static int kill_unit(sd_bus *bus, char **args) {
 
         r = expand_names(bus, args + 1, NULL, &names);
         if (r < 0)
-                log_error("Failed to expand names: %s", strerror(-r));
+                log_error_errno(r, "Failed to expand names: %m");
 
         STRV_FOREACH(name, names) {
-                q = sd_bus_call_method(
+                _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+
+                q = sd_bus_message_new_method_call(
                                 bus,
+                                &m,
                                 "org.freedesktop.systemd1",
                                 "/org/freedesktop/systemd1",
                                 "org.freedesktop.systemd1.Manager",
-                                "KillUnit",
-                                &error,
-                                NULL,
-                                "ssi", *names, arg_kill_who, arg_signal);
+                                "KillUnit");
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_message_append(m, "ssi", *names, arg_kill_who, arg_signal);
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_call(bus, m, 0, &error, NULL);
                 if (q < 0) {
-                        log_error("Failed to kill unit %s: %s",
-                                  *names, bus_error_message(&error, r));
+                        log_error("Failed to kill unit %s: %s", *names, bus_error_message(&error, q));
                         if (r == 0)
                                 r = q;
                 }
@@ -3141,6 +3221,7 @@ typedef struct UnitStatusInfo {
         const char *active_state;
         const char *sub_state;
         const char *unit_file_state;
+        const char *unit_file_preset;
 
         const char *description;
         const char *following;
@@ -3170,6 +3251,7 @@ typedef struct UnitStatusInfo {
         const char *status_text;
         const char *pid_file;
         bool running:1;
+        int status_errno;
 
         usec_t start_timestamp;
         usec_t exit_timestamp;
@@ -3181,7 +3263,14 @@ typedef struct UnitStatusInfo {
         bool failed_condition_trigger;
         bool failed_condition_negate;
         const char *failed_condition;
-        const char *failed_condition_param;
+        const char *failed_condition_parameter;
+
+        usec_t assert_timestamp;
+        bool assert_result;
+        bool failed_assert_trigger;
+        bool failed_assert_negate;
+        const char *failed_assert;
+        const char *failed_assert_parameter;
 
         /* Socket */
         unsigned n_accepted;
@@ -3256,7 +3345,10 @@ static void print_status_info(
         if (i->load_error)
                 printf("   Loaded: %s%s%s (Reason: %s)\n",
                        on, strna(i->load_state), off, i->load_error);
-        else if (path && i->unit_file_state)
+        else if (path && !isempty(i->unit_file_state) && !isempty(i->unit_file_preset))
+                printf("   Loaded: %s%s%s (%s; %s; vendor preset: %s)\n",
+                       on, strna(i->load_state), off, path, i->unit_file_state, i->unit_file_preset);
+        else if (path && !isempty(i->unit_file_state))
                 printf("   Loaded: %s%s%s (%s; %s)\n",
                        on, strna(i->load_state), off, path, i->unit_file_state);
         else if (path)
@@ -3325,7 +3417,8 @@ static void print_status_info(
                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
 
-                printf("           start condition failed at %s%s%s\n",
+                printf("Condition: start %scondition failed%s at %s%s%s\n",
+                       ansi_highlight_yellow(), ansi_highlight_off(),
                        s2, s1 ? "; " : "", s1 ? s1 : "");
                 if (i->failed_condition_trigger)
                         printf("           none of the trigger conditions were met\n");
@@ -3333,7 +3426,23 @@ static void print_status_info(
                         printf("           %s=%s%s was not met\n",
                                i->failed_condition,
                                i->failed_condition_negate ? "!" : "",
-                               i->failed_condition_param);
+                               i->failed_condition_parameter);
+        }
+
+        if (!i->assert_result && i->assert_timestamp > 0) {
+                s1 = format_timestamp_relative(since1, sizeof(since1), i->assert_timestamp);
+                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 : "");
+                if (i->failed_assert_trigger)
+                        printf("           none of the trigger assertions were met\n");
+                else if (i->failed_assert)
+                        printf("           %s=%s%s was not met\n",
+                               i->failed_assert,
+                               i->failed_assert_negate ? "!" : "",
+                               i->failed_assert_parameter);
         }
 
         if (i->sysfs_path)
@@ -3398,7 +3507,7 @@ static void print_status_info(
 
         if (i->main_pid > 0 || i->control_pid > 0) {
                 if (i->main_pid > 0) {
-                        printf(" Main PID: %u", (unsigned) i->main_pid);
+                        printf(" Main PID: "PID_FMT, i->main_pid);
 
                         if (i->running) {
                                 _cleanup_free_ char *comm = NULL;
@@ -3429,7 +3538,7 @@ static void print_status_info(
                 if (i->control_pid > 0) {
                         _cleanup_free_ char *c = NULL;
 
-                        printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
+                        printf(" %8s: "PID_FMT, i->main_pid ? "" : " Control", i->control_pid);
 
                         get_process_comm(i->control_pid, &c);
                         if (c)
@@ -3441,6 +3550,8 @@ static void print_status_info(
 
         if (i->status_text)
                 printf("   Status: \"%s\"\n", i->status_text);
+        if (i->status_errno > 0)
+                printf("    Error: %i (%s)\n", i->status_errno, strerror(i->status_errno));
 
         if (i->control_group &&
             (i->main_pid > 0 || i->control_pid > 0 ||
@@ -3500,50 +3611,11 @@ static void show_unit_help(UnitStatusInfo *i) {
                 return;
         }
 
-        STRV_FOREACH(p, i->documentation) {
-
-                if (startswith(*p, "man:")) {
-                        const char *args[4] = { "man", NULL, NULL, NULL };
-                        _cleanup_free_ char *page = NULL, *section = NULL;
-                        char *e = NULL;
-                        pid_t pid;
-                        size_t k;
-
-                        k = strlen(*p);
-
-                        if ((*p)[k-1] == ')')
-                                e = strrchr(*p, '(');
-
-                        if (e) {
-                                page = strndup((*p) + 4, e - *p - 4);
-                                section = strndup(e + 1, *p + k - e - 2);
-                                if (!page || !section) {
-                                        log_oom();
-                                        return;
-                                }
-
-                                args[1] = section;
-                                args[2] = page;
-                        } else
-                                args[1] = *p + 4;
-
-                        pid = fork();
-                        if (pid < 0) {
-                                log_error("Failed to fork: %m");
-                                continue;
-                        }
-
-                        if (pid == 0) {
-                                /* Child */
-                                execvp(args[0], (char**) args);
-                                log_error("Failed to execute man: %m");
-                                _exit(EXIT_FAILURE);
-                        }
-
-                        wait_for_terminate(pid, NULL);
-                } else
+        STRV_FOREACH(p, i->documentation)
+                if (startswith(*p, "man:"))
+                        show_man_page(*p + 4, false);
+                else
                         log_info("Can't show: %s", *p);
-        }
 }
 
 static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *i, const char *contents) {
@@ -3601,6 +3673,8 @@ static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *
                                 i->following = s;
                         else if (streq(name, "UnitFileState"))
                                 i->unit_file_state = s;
+                        else if (streq(name, "UnitFilePreset"))
+                                i->unit_file_preset = s;
                         else if (streq(name, "Result"))
                                 i->result = s;
                 }
@@ -3621,6 +3695,8 @@ static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *
                         i->need_daemon_reload = b;
                 else if (streq(name, "ConditionResult"))
                         i->condition_result = b;
+                else if (streq(name, "AssertResult"))
+                        i->assert_result = b;
 
                 break;
         }
@@ -3661,6 +3737,8 @@ static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *
                         i->exit_code = (int) j;
                 else if (streq(name, "ExecMainStatus"))
                         i->exit_status = (int) j;
+                else if (streq(name, "StatusErrno"))
+                        i->status_errno = (int) j;
 
                 break;
         }
@@ -3688,6 +3766,8 @@ static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *
                         i->active_exit_timestamp = (usec_t) u;
                 else if (streq(name, "ConditionTimestamp"))
                         i->condition_timestamp = (usec_t) u;
+                else if (streq(name, "AssertTimestamp"))
+                        i->assert_timestamp = (usec_t) u;
 
                 break;
         }
@@ -3780,7 +3860,32 @@ static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *
                                         i->failed_condition = cond;
                                         i->failed_condition_trigger = trigger;
                                         i->failed_condition_negate = negate;
-                                        i->failed_condition_param = param;
+                                        i->failed_condition_parameter = param;
+                                }
+                        }
+                        if (r < 0)
+                                return bus_log_parse_error(r);
+
+                        r = sd_bus_message_exit_container(m);
+                        if (r < 0)
+                                return bus_log_parse_error(r);
+
+                } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Asserts")) {
+                        const char *cond, *param;
+                        int trigger, negate;
+                        int32_t state;
+
+                        r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sbbsi)");
+                        if (r < 0)
+                                return bus_log_parse_error(r);
+
+                        while ((r = sd_bus_message_read(m, "(sbbsi)", &cond, &trigger, &negate, &param, &state)) > 0) {
+                                log_debug("%s %d %d %s %d", cond, trigger, negate, param, state);
+                                if (state < 0 && (!trigger || !i->failed_assert)) {
+                                        i->failed_assert = cond;
+                                        i->failed_assert_trigger = trigger;
+                                        i->failed_assert_negate = negate;
+                                        i->failed_assert_parameter = param;
                                 }
                         }
                         if (r < 0)
@@ -3852,7 +3957,7 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
                                 return bus_log_parse_error(r);
 
                         if (u > 0)
-                                printf("%s=%u\n", name, (unsigned) u);
+                                printf("%s=%"PRIu32"\n", name, u);
                         else if (arg_all)
                                 printf("%s=\n", name);
 
@@ -4023,14 +4128,14 @@ static int print_property(const char *name, sd_bus_message *m, const char *conte
 
                                 tt = strv_join(info.argv, " ");
 
-                                printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
+                                printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid="PID_FMT" ; code=%s ; status=%i%s%s }\n",
                                        name,
                                        strna(info.path),
                                        strna(tt),
                                        yes_no(info.ignore),
                                        strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
                                        strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
-                                       (unsigned) info. pid,
+                                       info.pid,
                                        sigchld_code_to_string(info.code),
                                        info.status,
                                        info.code == CLD_EXITED ? "" : "/",
@@ -4327,10 +4432,8 @@ static int show_system_status(sd_bus *bus) {
                 return log_oom();
 
         r = bus_map_all_properties(bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", machine_info_property_map, &mi);
-        if (r < 0) {
-                log_error("Failed to read server status: %s", strerror(-r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to read server status: %m");
 
         if (streq_ptr(mi.state, "degraded")) {
                 on = ansi_highlight_red();
@@ -4447,7 +4550,7 @@ static int show(sd_bus *bus, char **args) {
 
                         r = expand_names(bus, patterns, NULL, &names);
                         if (r < 0)
-                                log_error("Failed to expand names: %s", strerror(-r));
+                                log_error_errno(r, "Failed to expand names: %m");
 
                         STRV_FOREACH(name, names) {
                                 _cleanup_free_ char *unit;
@@ -4473,7 +4576,6 @@ static int show(sd_bus *bus, char **args) {
 }
 
 static int cat(sd_bus *bus, char **args) {
-        _cleanup_free_ char *unit = NULL;
         _cleanup_strv_free_ char **names = NULL;
         char **name;
         bool first = true;
@@ -4484,14 +4586,14 @@ static int cat(sd_bus *bus, char **args) {
 
         r = expand_names(bus, args + 1, NULL, &names);
         if (r < 0)
-                log_error("Failed to expand names: %s", strerror(-r));
+                log_error_errno(r, "Failed to expand names: %m");
 
         pager_open_if_enabled();
 
         STRV_FOREACH(name, names) {
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
                 _cleanup_strv_free_ char **dropin_paths = NULL;
-                _cleanup_free_ char *fragment_path = NULL;
+                _cleanup_free_ char *fragment_path = NULL, *unit = NULL;
                 char **path;
 
                 unit = unit_dbus_path_from_name(*name);
@@ -4540,9 +4642,9 @@ static int cat(sd_bus *bus, char **args) {
                                ansi_highlight_off());
                         fflush(stdout);
 
-                        r = sendfile_full(STDOUT_FILENO, fragment_path);
+                        r = copy_file_fd(fragment_path, STDOUT_FILENO);
                         if (r < 0) {
-                                log_warning("Failed to cat %s: %s", fragment_path, strerror(-r));
+                                log_warning_errno(r, "Failed to cat %s: %m", fragment_path);
                                 continue;
                         }
                 }
@@ -4555,9 +4657,9 @@ static int cat(sd_bus *bus, char **args) {
                                ansi_highlight_off());
                         fflush(stdout);
 
-                        r = sendfile_full(STDOUT_FILENO, *path);
+                        r = copy_file_fd(*path, STDOUT_FILENO);
                         if (r < 0) {
-                                log_warning("Failed to cat %s: %s", *path, strerror(-r));
+                                log_warning_errno(r, "Failed to cat %s: %m", *path);
                                 continue;
                         }
                 }
@@ -4583,6 +4685,10 @@ static int set_property(sd_bus *bus, char **args) {
         if (r < 0)
                 return bus_log_create_error(r);
 
+        r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+        if (r < 0)
+                return bus_log_create_error(r);
+
         n = unit_name_mangle(args[1], MANGLE_NOGLOB);
         if (!n)
                 return log_oom();
@@ -4624,7 +4730,7 @@ static int set_property(sd_bus *bus, char **args) {
 
 static int snapshot(sd_bus *bus, char **args) {
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-        _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+        _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
         _cleanup_free_ char *n = NULL, *id = NULL;
         const char *path;
         int r;
@@ -4636,15 +4742,25 @@ static int snapshot(sd_bus *bus, char **args) {
         if (!n)
                 return log_oom();
 
-        r = sd_bus_call_method(
+        r = sd_bus_message_new_method_call(
                         bus,
+                        &m,
                         "org.freedesktop.systemd1",
                         "/org/freedesktop/systemd1",
                         "org.freedesktop.systemd1.Manager",
-                        "CreateSnapshot",
-                        &error,
-                        &reply,
-                        "sb", n, false);
+                        "CreateSnapshot");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_append(m, "sb", n, false);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_call(bus, m, 0, &error, &reply);
         if (r < 0) {
                 log_error("Failed to create snapshot: %s", bus_error_message(&error, r));
                 return r;
@@ -4677,27 +4793,39 @@ static int delete_snapshot(sd_bus *bus, char **args) {
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         _cleanup_strv_free_ char **names = NULL;
         char **name;
-        int r, q;
+        int r;
 
         assert(args);
 
         r = expand_names(bus, args + 1, ".snapshot", &names);
         if (r < 0)
-                log_error("Failed to expand names: %s", strerror(-r));
+                log_error_errno(r, "Failed to expand names: %m");
 
         STRV_FOREACH(name, names) {
-                q = sd_bus_call_method(
+                _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+                int q;
+
+                q = sd_bus_message_new_method_call(
                                 bus,
+                                &m,
                                 "org.freedesktop.systemd1",
                                 "/org/freedesktop/systemd1",
                                 "org.freedesktop.systemd1.Manager",
-                                "RemoveSnapshot",
-                                &error,
-                                NULL,
-                                "s", *name);
+                                "RemoveSnapshot");
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_message_append(m, "s", *name);
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_call(bus, m, 0, &error, NULL);
                 if (q < 0) {
-                        log_error("Failed to remove snapshot %s: %s",
-                                  *name, bus_error_message(&error, r));
+                        log_error("Failed to remove snapshot %s: %s", *name, bus_error_message(&error, q));
                         if (r == 0)
                                 r = q;
                 }
@@ -4708,6 +4836,7 @@ static int delete_snapshot(sd_bus *bus, char **args) {
 
 static int daemon_reload(sd_bus *bus, char **args) {
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
         const char *method;
         int r;
 
@@ -4731,16 +4860,21 @@ static int daemon_reload(sd_bus *bus, char **args) {
                                     /* "daemon-reload" */ "Reload";
         }
 
-        r = sd_bus_call_method(
+        r = sd_bus_message_new_method_call(
                         bus,
+                        &m,
                         "org.freedesktop.systemd1",
                         "/org/freedesktop/systemd1",
                         "org.freedesktop.systemd1.Manager",
-                        method,
-                        &error,
-                        NULL,
-                        NULL);
+                        method);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+        if (r < 0)
+                return bus_log_create_error(r);
 
+        r = sd_bus_call(bus, m, 0, &error, NULL);
         if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
                 /* There's always a fallback possible for
                  * legacy actions. */
@@ -4766,21 +4900,32 @@ static int reset_failed(sd_bus *bus, char **args) {
 
         r = expand_names(bus, args + 1, NULL, &names);
         if (r < 0)
-                log_error("Failed to expand names: %s", strerror(-r));
+                log_error_errno(r, "Failed to expand names: %m");
 
         STRV_FOREACH(name, names) {
-                q = sd_bus_call_method(
+                _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+
+                q = sd_bus_message_new_method_call(
                                 bus,
+                                &m,
                                 "org.freedesktop.systemd1",
                                 "/org/freedesktop/systemd1",
                                 "org.freedesktop.systemd1.Manager",
-                                "ResetFailedUnit",
-                                &error,
-                                NULL,
-                                "s", *name);
+                                "ResetFailedUnit");
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_message_append(m, "s", *name);
+                if (q < 0)
+                        return bus_log_create_error(q);
+
+                q = sd_bus_call(bus, m, 0, &error, NULL);
                 if (q < 0) {
-                        log_error("Failed to reset failed state of unit %s: %s",
-                                  *name, bus_error_message(&error, r));
+                        log_error("Failed to reset failed state of unit %s: %s", *name, bus_error_message(&error, q));
                         if (r == 0)
                                 r = q;
                 }
@@ -4849,7 +4994,7 @@ static int switch_root(sd_bus *bus, char **args) {
                                    "init", &cmdline_init,
                                    NULL);
                 if (r < 0)
-                        log_debug("Failed to parse /proc/cmdline: %s", strerror(-r));
+                        log_debug_errno(r, "Failed to parse /proc/cmdline: %m");
 
                 init = cmdline_init;
         }
@@ -4861,7 +5006,7 @@ static int switch_root(sd_bus *bus, char **args) {
                 const char *root_systemd_path = NULL, *root_init_path = NULL;
 
                 root_systemd_path = strappenda(root, "/" SYSTEMD_BINARY_PATH);
-                root_init_path = strappenda3(root, "/", init);
+                root_init_path = strappenda(root, "/", init);
 
                 /* If the passed init is actually the same as the
                  * systemd binary, then let's suppress it. */
@@ -4911,7 +5056,11 @@ 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_set_allow_interactive_authorization(m, arg_ask_password);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_append_strv(m, args + 1);
         if (r < 0)
                 return bus_log_create_error(r);
 
@@ -4942,6 +5091,10 @@ static int import_environment(sd_bus *bus, char **args) {
         if (r < 0)
                 return bus_log_create_error(r);
 
+        r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+        if (r < 0)
+                return bus_log_create_error(r);
+
         if (strv_isempty(args + 1))
                 r = sd_bus_message_append_strv(m, environ);
         else {
@@ -5032,15 +5185,9 @@ static int enable_sysv_units(const char *verb, char **args) {
                 STRV_FOREACH(k, paths.unit_path) {
                         _cleanup_free_ char *path = NULL;
 
-                        if (!isempty(arg_root))
-                                asprintf(&path, "%s/%s/%s", arg_root, *k, name);
-                        else
-                                asprintf(&path, "%s/%s", *k, name);
-
-                        if (!path) {
-                                r = log_oom();
-                                goto finish;
-                        }
+                        path = path_join(arg_root, *k, name);
+                        if (!path)
+                                return log_oom();
 
                         found_native = access(path, F_OK) >= 0;
                         if (found_native)
@@ -5050,14 +5197,9 @@ static int enable_sysv_units(const char *verb, char **args) {
                 if (found_native)
                         continue;
 
-                if (!isempty(arg_root))
-                        asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
-                else
-                        asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
-                if (!p) {
-                        r = log_oom();
-                        goto finish;
-                }
+                p = path_join(arg_root, SYSTEM_SYSVINIT_PATH, name);
+                if (!p)
+                        return log_oom();
 
                 p[strlen(p) - strlen(".service")] = 0;
                 found_sysv = access(p, F_OK) >= 0;
@@ -5079,19 +5221,15 @@ static int enable_sysv_units(const char *verb, char **args) {
                 argv[c] = NULL;
 
                 l = strv_join((char**)argv, " ");
-                if (!l) {
-                        r = log_oom();
-                        goto finish;
-                }
+                if (!l)
+                        return log_oom();
 
                 log_info("Executing %s", l);
 
                 pid = fork();
-                if (pid < 0) {
-                        log_error("Failed to fork: %m");
-                        r = -errno;
-                        goto finish;
-                } else if (pid == 0) {
+                if (pid < 0)
+                        return log_error_errno(errno, "Failed to fork: %m");
+                else if (pid == 0) {
                         /* Child */
 
                         execv(argv[0], (char**) argv);
@@ -5100,9 +5238,8 @@ static int enable_sysv_units(const char *verb, char **args) {
 
                 j = wait_for_terminate(pid, &status);
                 if (j < 0) {
-                        log_error("Failed to wait for child: %s", strerror(-r));
-                        r = j;
-                        goto finish;
+                        log_error_errno(r, "Failed to wait for child: %m");
+                        return j;
                 }
 
                 if (status.si_code == CLD_EXITED) {
@@ -5116,17 +5253,12 @@ static int enable_sysv_units(const char *verb, char **args) {
                                                 puts("disabled");
                                 }
 
-                        } else if (status.si_status != 0) {
-                                r = -EINVAL;
-                                goto finish;
-                        }
-                } else {
-                        r = -EPROTO;
-                        goto finish;
-                }
+                        } else if (status.si_status != 0)
+                                return -EINVAL;
+                } else
+                        return -EPROTO;
         }
 
-finish:
         /* Drop all SysV units */
         for (f = 0, t = 0; args[f]; f++) {
 
@@ -5220,7 +5352,7 @@ static int enable_unit(sd_bus *bus, char **args) {
                         assert_not_reached("Unknown verb");
 
                 if (r < 0) {
-                        log_error("Operation failed: %s", strerror(-r));
+                        log_error_errno(r, "Operation failed: %m");
                         goto finish;
                 }
 
@@ -5273,6 +5405,10 @@ static int enable_unit(sd_bus *bus, char **args) {
                 if (r < 0)
                         return bus_log_create_error(r);
 
+                r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+                if (r < 0)
+                        return bus_log_create_error(r);
+
                 r = sd_bus_message_append_strv(m, names);
                 if (r < 0)
                         return bus_log_create_error(r);
@@ -5333,6 +5469,90 @@ finish:
         return r;
 }
 
+static int add_dependency(sd_bus *bus, char **args) {
+        _cleanup_strv_free_ char **names = NULL;
+        _cleanup_free_ char *target = NULL;
+        const char *verb = args[0];
+        UnitDependency dep;
+        int r = 0;
+
+        if (!args[1])
+                return 0;
+
+        target = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".target");
+        if (!target)
+                return log_oom();
+
+        r = mangle_names(args+2, &names);
+        if (r < 0)
+                return r;
+
+        if (streq(verb, "add-wants"))
+                dep = UNIT_WANTS;
+        else if (streq(verb, "add-requires"))
+                dep = UNIT_REQUIRES;
+        else
+                assert_not_reached("Unknown verb");
+
+        if (!bus || avoid_bus()) {
+                UnitFileChange *changes = NULL;
+                unsigned n_changes = 0;
+
+                r = unit_file_add_dependency(arg_scope, arg_runtime, arg_root, names, target, dep, arg_force, &changes, &n_changes);
+
+                if (r < 0)
+                        return log_error_errno(r, "Can't add dependency: %m");
+
+                if (!arg_quiet)
+                        dump_unit_file_changes(changes, n_changes);
+
+                unit_file_changes_free(changes, n_changes);
+
+        } else {
+                _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
+                _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+
+                r = sd_bus_message_new_method_call(
+                                bus,
+                                &m,
+                                "org.freedesktop.systemd1",
+                                "/org/freedesktop/systemd1",
+                                "org.freedesktop.systemd1.Manager",
+                                "AddDependencyUnitFiles");
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                r = sd_bus_message_append_strv(m, names);
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                r = sd_bus_message_append(m, "ssbb", target, unit_dependency_to_string(dep), arg_runtime, arg_force);
+                if (r < 0)
+                        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;
+                }
+
+                r = deserialize_and_dump_unit_file_changes(reply);
+                if (r < 0)
+                        return r;
+
+                if (!arg_no_reload)
+                        r = daemon_reload(bus, args);
+                else
+                        r = 0;
+        }
+
+        return r;
+}
+
 static int preset_all(sd_bus *bus, char **args) {
         UnitFileChange *changes = NULL;
         unsigned n_changes = 0;
@@ -5342,7 +5562,7 @@ static int preset_all(sd_bus *bus, char **args) {
 
                 r = unit_file_preset_all(arg_scope, arg_runtime, arg_root, arg_preset_mode, arg_force, &changes, &n_changes);
                 if (r < 0) {
-                        log_error("Operation failed: %s", strerror(-r));
+                        log_error_errno(r, "Operation failed: %m");
                         goto finish;
                 }
 
@@ -5352,21 +5572,33 @@ static int preset_all(sd_bus *bus, char **args) {
                 r = 0;
 
         } else {
-                _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+                _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 
-                r = sd_bus_call_method(
+                r = sd_bus_message_new_method_call(
                                 bus,
+                                &m,
                                 "org.freedesktop.systemd1",
                                 "/org/freedesktop/systemd1",
                                 "org.freedesktop.systemd1.Manager",
-                                "PresetAllUnitFiles",
-                                &error,
-                                &reply,
+                                "PresetAllUnitFiles");
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                r = sd_bus_message_append(
+                                m,
                                 "sbb",
                                 unit_file_preset_mode_to_string(arg_preset_mode),
                                 arg_runtime,
                                 arg_force);
+                if (r < 0)
+                        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;
@@ -5412,14 +5644,13 @@ static int unit_is_enabled(sd_bus *bus, char **args) {
                         UnitFileState state;
 
                         state = unit_file_get_state(arg_scope, arg_root, *name);
-                        if (state < 0) {
-                                log_error("Failed to get unit file state for %s: %s", *name, strerror(-state));
-                                return state;
-                        }
+                        if (state < 0)
+                                return log_error_errno(state, "Failed to get unit file state for %s: %m", *name);
 
                         if (state == UNIT_FILE_ENABLED ||
                             state == UNIT_FILE_ENABLED_RUNTIME ||
-                            state == UNIT_FILE_STATIC)
+                            state == UNIT_FILE_STATIC ||
+                            state == UNIT_FILE_INDIRECT)
                                 enabled = true;
 
                         if (!arg_quiet)
@@ -5449,9 +5680,7 @@ static int unit_is_enabled(sd_bus *bus, char **args) {
                         if (r < 0)
                                 return bus_log_parse_error(r);
 
-                        if (streq(s, "enabled") ||
-                            streq(s, "enabled-runtime") ||
-                            streq(s, "static"))
+                        if (STR_IN_SET(s, "enabled", "enabled-runtime", "static", "indirect"))
                                 enabled = true;
 
                         if (!arg_quiet)
@@ -5462,7 +5691,541 @@ static int unit_is_enabled(sd_bus *bus, char **args) {
         return !enabled;
 }
 
-static int systemctl_help(void) {
+static int is_system_running(sd_bus *bus, char **args) {
+        _cleanup_free_ char *state = NULL;
+        int r;
+
+        r = sd_bus_get_property_string(
+                        bus,
+                        "org.freedesktop.systemd1",
+                        "/org/freedesktop/systemd1",
+                        "org.freedesktop.systemd1.Manager",
+                        "SystemState",
+                        NULL,
+                        &state);
+        if (r < 0) {
+                if (!arg_quiet)
+                        puts("unknown");
+                return 0;
+        }
+
+        if (!arg_quiet)
+                puts(state);
+
+        return streq(state, "running") ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+
+static int unit_file_find_path(LookupPaths *lp, const char *unit_name, char **unit_path) {
+        char **p;
+
+        assert(lp);
+        assert(unit_name);
+        assert(unit_path);
+
+        STRV_FOREACH(p, lp->unit_path) {
+                char *path;
+
+                path = path_join(arg_root, *p, unit_name);
+                if (!path)
+                        return log_oom();
+
+                if (access(path, F_OK) == 0) {
+                        *unit_path = path;
+                        return 1;
+                }
+
+                free(path);
+        }
+
+        return 0;
+}
+
+static int create_edit_temp_file(const char *new_path, const char *original_path, char **ret_tmp_fn) {
+        int r;
+        char *t;
+
+        assert(new_path);
+        assert(original_path);
+        assert(ret_tmp_fn);
+
+        t = tempfn_random(new_path);
+        if (!t)
+                return log_oom();
+
+        r = mkdir_parents(new_path, 0755);
+        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);
+        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;
+        }
+
+        *ret_tmp_fn = t;
+
+        return 0;
+}
+
+static int get_drop_in_to_edit(const char *unit_name, const char *user_home, const char *user_runtime, char **ret_path) {
+        char *tmp_new_path;
+        char *tmp;
+
+        assert(unit_name);
+        assert(ret_path);
+
+        switch (arg_scope) {
+                case UNIT_FILE_SYSTEM:
+                        tmp = strappenda(arg_runtime ? "/run/systemd/system/" : SYSTEM_CONFIG_UNIT_PATH "/", unit_name, ".d/override.conf");
+                        break;
+                case UNIT_FILE_GLOBAL:
+                        tmp = strappenda(arg_runtime ? "/run/systemd/user/" : USER_CONFIG_UNIT_PATH "/", unit_name, ".d/override.conf");
+                        break;
+                case UNIT_FILE_USER:
+                        assert(user_home);
+                        assert(user_runtime);
+
+                        tmp = strappenda(arg_runtime ? user_runtime : user_home, "/", unit_name, ".d/override.conf");
+                        break;
+                default:
+                        assert_not_reached("Invalid scope");
+        }
+
+        tmp_new_path = path_join(arg_root, tmp, NULL);
+        if (!tmp_new_path)
+                return log_oom();
+
+        *ret_path = tmp_new_path;
+
+        return 0;
+}
+
+static int unit_file_create_drop_in(const char *unit_name, const char *user_home, const char *user_runtime, char **ret_new_path, char **ret_tmp_path) {
+        char *tmp_new_path;
+        char *tmp_tmp_path;
+        int r;
+
+        assert(unit_name);
+        assert(ret_new_path);
+        assert(ret_tmp_path);
+
+        r = get_drop_in_to_edit(unit_name, user_home, user_runtime, &tmp_new_path);
+        if (r < 0)
+                return r;
+
+        r = create_edit_temp_file(tmp_new_path, tmp_new_path, &tmp_tmp_path);
+        if (r < 0) {
+                free(tmp_new_path);
+                return r;
+        }
+
+        *ret_new_path = tmp_new_path;
+        *ret_tmp_path = tmp_tmp_path;
+
+        return 0;
+}
+
+static bool unit_is_editable(const char *unit_name, const char *fragment_path, const char *user_home) {
+        bool editable = true;
+        const char *invalid_path;
+
+        assert(unit_name);
+
+        if (!arg_runtime)
+                return true;
+
+        switch (arg_scope) {
+                case UNIT_FILE_SYSTEM:
+                        if (path_startswith(fragment_path, "/etc/systemd/system")) {
+                                editable = false;
+                                invalid_path = "/etc/systemd/system";
+                        } else if (path_startswith(fragment_path, SYSTEM_CONFIG_UNIT_PATH)) {
+                                editable = false;
+                                invalid_path = SYSTEM_CONFIG_UNIT_PATH;
+                        }
+                        break;
+                case UNIT_FILE_GLOBAL:
+                        if (path_startswith(fragment_path, "/etc/systemd/user")) {
+                                editable = false;
+                                invalid_path = "/etc/systemd/user";
+                        } else if (path_startswith(fragment_path, USER_CONFIG_UNIT_PATH)) {
+                                editable = false;
+                                invalid_path = USER_CONFIG_UNIT_PATH;
+                        }
+                        break;
+                case UNIT_FILE_USER:
+                        assert(user_home);
+
+                        if (path_startswith(fragment_path, "/etc/systemd/user")) {
+                                editable = false;
+                                invalid_path = "/etc/systemd/user";
+                        } else if (path_startswith(fragment_path, USER_CONFIG_UNIT_PATH)) {
+                                editable = false;
+                                invalid_path = USER_CONFIG_UNIT_PATH;
+                        } else if (path_startswith(fragment_path, user_home)) {
+                                editable = false;
+                                invalid_path = user_home;
+                        }
+                        break;
+                default:
+                        assert_not_reached("Invalid scope");
+        }
+
+        if (!editable)
+                log_error("%s ignored: cannot temporarily edit units from %s", unit_name, invalid_path);
+
+        return editable;
+}
+
+static int get_copy_to_edit(const char *unit_name, const char *fragment_path, const char *user_home, const char *user_runtime, char **ret_path) {
+        char *tmp_new_path;
+
+        assert(unit_name);
+        assert(ret_path);
+
+        if (!unit_is_editable(unit_name, fragment_path, user_home))
+                return -EINVAL;
+
+        switch (arg_scope) {
+                case UNIT_FILE_SYSTEM:
+                        tmp_new_path = path_join(arg_root, arg_runtime ? "/run/systemd/system/" : SYSTEM_CONFIG_UNIT_PATH, unit_name);
+                        break;
+                case UNIT_FILE_GLOBAL:
+                        tmp_new_path = path_join(arg_root, arg_runtime ? "/run/systemd/user/" : USER_CONFIG_UNIT_PATH, unit_name);
+                        break;
+                case UNIT_FILE_USER:
+                        assert(user_home);
+                        assert(user_runtime);
+
+                        tmp_new_path = path_join(arg_root, arg_runtime ? user_runtime : user_home, unit_name);
+                        break;
+                default:
+                        assert_not_reached("Invalid scope");
+        }
+        if (!tmp_new_path)
+                return log_oom();
+
+        *ret_path = tmp_new_path;
+
+        return 0;
+}
+
+static int unit_file_create_copy(const char *unit_name,
+                                 const char *fragment_path,
+                                 const char *user_home,
+                                 const char *user_runtime,
+                                 char **ret_new_path,
+                                 char **ret_tmp_path) {
+        char *tmp_new_path;
+        char *tmp_tmp_path;
+        int r;
+
+        assert(fragment_path);
+        assert(unit_name);
+        assert(ret_new_path);
+        assert(ret_tmp_path);
+
+        r = get_copy_to_edit(unit_name, fragment_path, user_home, user_runtime, &tmp_new_path);
+        if (r < 0)
+                return r;
+
+        if (!path_equal(fragment_path, tmp_new_path) && access(tmp_new_path, F_OK) == 0) {
+                char response;
+
+                r = ask_char(&response, "yn", "%s already exists, are you sure to overwrite it with %s? [(y)es, (n)o] ", tmp_new_path, fragment_path);
+                if (r < 0) {
+                        free(tmp_new_path);
+                        return r;
+                }
+                if (response != 'y') {
+                        log_warning("%s ignored", unit_name);
+                        free(tmp_new_path);
+                        return -1;
+                }
+        }
+
+        r = create_edit_temp_file(tmp_new_path, fragment_path, &tmp_tmp_path);
+        if (r < 0) {
+                log_error_errno(r, "Failed to create temporary file for %s: %m", tmp_new_path);
+                free(tmp_new_path);
+                return r;
+        }
+
+        *ret_new_path = tmp_new_path;
+        *ret_tmp_path = tmp_tmp_path;
+
+        return 0;
+}
+
+static int run_editor(char **paths) {
+        pid_t pid;
+        int r;
+
+        assert(paths);
+
+        pid = fork();
+        if (pid < 0) {
+                log_error_errno(errno, "Failed to fork: %m");
+                return -errno;
+        }
+
+        if (pid == 0) {
+                const char **args;
+                char **backup_editors = STRV_MAKE("nano", "vim", "vi");
+                char *editor;
+                char **tmp_path, **original_path, **p;
+                unsigned i = 1;
+                size_t argc;
+
+                argc = strv_length(paths)/2 + 1;
+                args = newa(const char*, argc + 1);
+
+                args[0] = NULL;
+                STRV_FOREACH_PAIR(original_path, tmp_path, paths) {
+                        args[i] = *tmp_path;
+                        i++;
+                }
+                args[argc] = NULL;
+
+                /* SYSTEMD_EDITOR takes precedence over EDITOR which takes precedence over VISUAL
+                 * If neither SYSTEMD_EDITOR nor EDITOR nor VISUAL are present,
+                 * we try to execute well known editors
+                 */
+                editor = getenv("SYSTEMD_EDITOR");
+                if (!editor)
+                        editor = getenv("EDITOR");
+                if (!editor)
+                        editor = getenv("VISUAL");
+
+                if (!isempty(editor)) {
+                        args[0] = editor;
+                        execvp(editor, (char* const*) args);
+                }
+
+                STRV_FOREACH(p, backup_editors) {
+                        args[0] = *p;
+                        execvp(*p, (char* const*) args);
+                        /* We do not fail if the editor doesn't exist
+                         * because we want to try each one of them before
+                         * failing.
+                         */
+                        if (errno != ENOENT) {
+                                log_error("Failed to execute %s: %m", editor);
+                                _exit(EXIT_FAILURE);
+                        }
+                }
+
+                log_error("Cannot edit unit(s): No editor available. Please set either SYSTEMD_EDITOR or EDITOR or VISUAL environment variable");
+                _exit(EXIT_FAILURE);
+        }
+
+        r = wait_for_terminate_and_warn("editor", pid, true);
+        if (r < 0)
+                return log_error_errno(r, "Failed to wait for child: %m");
+
+        return r;
+}
+
+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;
+        char **name;
+        int r;
+
+        assert(names);
+        assert(paths);
+
+        if (arg_scope == UNIT_FILE_USER) {
+                r = user_config_home(&user_home);
+                if (r < 0)
+                        return log_oom();
+                else if (r == 0) {
+                        log_error("Cannot edit units for the user instance: home directory unknown");
+                        return -1;
+                }
+
+                r = user_runtime_dir(&user_runtime);
+                if (r < 0)
+                        return log_oom();
+                else if (r == 0) {
+                        log_error("Cannot edit units for the user instance: runtime directory unknown");
+                        return -1;
+                }
+        }
+
+        if (!bus || avoid_bus()) {
+                _cleanup_lookup_paths_free_ LookupPaths lp = {};
+
+                /* If there is no bus, we try to find the units by testing each available directory
+                 * according to the scope.
+                 */
+                r = lookup_paths_init(&lp,
+                                arg_scope == UNIT_FILE_SYSTEM ? SYSTEMD_SYSTEM : SYSTEMD_USER,
+                                arg_scope == UNIT_FILE_USER,
+                                arg_root,
+                                NULL, NULL, NULL);
+                if (r < 0) {
+                        log_error_errno(r, "Failed get lookup paths: %m");
+                        return r;
+                }
+
+                STRV_FOREACH(name, names) {
+                        _cleanup_free_ char *path = NULL;
+                        char *new_path, *tmp_path;
+
+                        r = unit_file_find_path(&lp, *name, &path);
+                        if (r < 0)
+                                return r;
+                        if (r == 0) {
+                                log_warning("%s ignored: not found", *name);
+                                continue;
+                        }
+
+                        if (arg_full)
+                                r = unit_file_create_copy(*name, path, user_home, user_runtime, &new_path, &tmp_path);
+                        else
+                                r = unit_file_create_drop_in(*name, user_home, user_runtime, &new_path, &tmp_path);
+
+                        if (r < 0)
+                                continue;
+
+                        r = strv_push(paths, new_path);
+                        if (r < 0)
+                                return log_oom();
+
+                        r = strv_push(paths, tmp_path);
+                        if (r < 0)
+                                return log_oom();
+                }
+        } else {
+                STRV_FOREACH(name, names) {
+                        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+                        _cleanup_free_ char *fragment_path = NULL;
+                        _cleanup_free_ char *unit = NULL;
+                        char *new_path, *tmp_path;
+
+                        unit = unit_dbus_path_from_name(*name);
+                        if (!unit)
+                                return log_oom();
+
+                        if (need_daemon_reload(bus, *name) > 0) {
+                                log_warning("%s ignored: unit file changed on disk. Run 'systemctl%s daemon-reload'.",
+                                        *name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
+                                continue;
+                        }
+
+                        r = sd_bus_get_property_string(
+                                        bus,
+                                        "org.freedesktop.systemd1",
+                                        unit,
+                                        "org.freedesktop.systemd1.Unit",
+                                        "FragmentPath",
+                                        &error,
+                                        &fragment_path);
+                        if (r < 0) {
+                                log_warning("Failed to get FragmentPath: %s", bus_error_message(&error, r));
+                                continue;
+                        }
+
+                        if (isempty(fragment_path)) {
+                                log_warning("%s ignored: not found", *name);
+                                continue;
+                        }
+
+                        if (arg_full)
+                                r = unit_file_create_copy(*name, fragment_path, user_home, user_runtime, &new_path, &tmp_path);
+                        else
+                                r = unit_file_create_drop_in(*name, user_home, user_runtime, &new_path, &tmp_path);
+                        if (r < 0)
+                                continue;
+
+                        r = strv_push(paths, new_path);
+                        if (r < 0)
+                                return log_oom();
+
+                        r = strv_push(paths, tmp_path);
+                        if (r < 0)
+                                return log_oom();
+                }
+        }
+
+        return 0;
+}
+
+static int edit(sd_bus *bus, char **args) {
+        _cleanup_strv_free_ char **names = NULL;
+        _cleanup_strv_free_ char **paths = NULL;
+        char **original, **tmp;
+        int r;
+
+        assert(args);
+
+        if (!on_tty()) {
+                log_error("Cannot edit units if we are not on a tty");
+                return -EINVAL;
+        }
+
+        if (arg_transport != BUS_TRANSPORT_LOCAL) {
+                log_error("Cannot remotely edit units");
+                return -EINVAL;
+        }
+
+        r = expand_names(bus, args + 1, NULL, &names);
+        if (r < 0)
+                return log_error_errno(r, "Failed to expand names: %m");
+
+        if (!names) {
+                log_error("No unit name found by expanding names");
+                return -ENOENT;
+        }
+
+        r = find_paths_to_edit(bus, names, &paths);
+        if (r < 0)
+                return r;
+
+        if (strv_isempty(paths)) {
+                log_error("Cannot find any units to edit");
+                return -ENOENT;
+        }
+
+        r = run_editor(paths);
+        if (r < 0)
+                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 (null_or_empty_path(*tmp)) {
+                        log_warning("Edition of %s canceled: temporary file empty", *original);
+                        continue;
+                }
+                r = rename(*tmp, *original);
+                if (r < 0) {
+                        r = log_error_errno(errno, "Failed to rename %s to %s: %m", *tmp, *original);
+                        goto end;
+                }
+        }
+
+        if (!arg_no_reload && bus && !avoid_bus())
+                r = daemon_reload(bus, args);
+
+end:
+        STRV_FOREACH_PAIR(original, tmp, paths)
+                unlink_noerrno(*tmp);
+
+        return r;
+}
+
+static void systemctl_help(void) {
 
         pager_open_if_enabled();
 
@@ -5554,8 +6317,14 @@ static int systemctl_help(void) {
                "  unmask NAME...                  Unmask one or more units\n"
                "  link PATH...                    Link one or more units files into\n"
                "                                  the search path\n"
+               "  add-wants TARGET NAME...        Add 'Wants' dependency for the target\n"
+               "                                  on specified one or more units\n"
+               "  add-requires TARGET NAME...     Add 'Requires' dependency for the target\n"
+               "                                  on specified one or more units\n"
                "  get-default                     Get the name of the default target\n"
-               "  set-default NAME                Set the default target\n\n"
+               "  set-default NAME                Set the default target\n"
+               "  edit NAME...                    Edit one or more unit files\n"
+               "\n"
                "Machine Commands:\n"
                "  list-machines [PATTERN...]      List local containers and host\n\n"
                "Job Commands:\n"
@@ -5573,6 +6342,7 @@ static int systemctl_help(void) {
                "  daemon-reload                   Reload systemd manager configuration\n"
                "  daemon-reexec                   Reexecute systemd manager\n\n"
                "System Commands:\n"
+               "  is-system-running               Check whether system is fully running\n"
                "  default                         Enter system default mode\n"
                "  rescue                          Enter system rescue mode\n"
                "  emergency                       Enter system emergency mode\n"
@@ -5586,12 +6356,9 @@ static int systemctl_help(void) {
                "  hibernate                       Hibernate the system\n"
                "  hybrid-sleep                    Hibernate and suspend the system\n",
                program_invocation_short_name);
-
-        return 0;
 }
 
-static int halt_help(void) {
-
+static void halt_help(void) {
         printf("%s [OPTIONS...]%s\n\n"
                "%s the system.\n\n"
                "     --help      Show this help\n"
@@ -5607,12 +6374,9 @@ static int halt_help(void) {
                arg_action == ACTION_REBOOT   ? "Reboot" :
                arg_action == ACTION_POWEROFF ? "Power off" :
                                                "Halt");
-
-        return 0;
 }
 
-static int shutdown_help(void) {
-
+static void shutdown_help(void) {
         printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
                "Shut down the system.\n\n"
                "     --help      Show this help\n"
@@ -5624,12 +6388,9 @@ static int shutdown_help(void) {
                "     --no-wall   Don't send wall message before halt/power-off/reboot\n"
                "  -c             Cancel a pending shutdown\n",
                program_invocation_short_name);
-
-        return 0;
 }
 
-static int telinit_help(void) {
-
+static void telinit_help(void) {
         printf("%s [OPTIONS...] {COMMAND}\n\n"
                "Send control commands to the init daemon.\n\n"
                "     --help      Show this help\n"
@@ -5642,32 +6403,26 @@ static int telinit_help(void) {
                "  q, Q           Reload init daemon configuration\n"
                "  u, U           Reexecute init daemon\n",
                program_invocation_short_name);
-
-        return 0;
 }
 
-static int runlevel_help(void) {
-
+static void runlevel_help(void) {
         printf("%s [OPTIONS...]\n\n"
                "Prints the previous and current runlevel of the init system.\n\n"
                "     --help      Show this help\n",
                program_invocation_short_name);
-
-        return 0;
 }
 
-static int help_types(void) {
+static void help_types(void) {
         int i;
         const char *t;
 
-        puts("Available unit types:");
+        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);
         }
-
-        return 0;
 }
 
 static int systemctl_parse_argv(int argc, char *argv[]) {
@@ -5749,12 +6504,13 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "ht:p:alqfs:H:M:n:o:ir", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "ht:p:alqfs:H:M:n:o:ir", options, NULL)) >= 0)
 
                 switch (c) {
 
                 case 'h':
-                        return systemctl_help();
+                        systemctl_help();
+                        return 0;
 
                 case ARG_VERSION:
                         puts(PACKAGE_STRING);
@@ -5762,7 +6518,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         return 0;
 
                 case 't': {
-                        char *word, *state;
+                        const char *word, *state;
                         size_t size;
 
                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
@@ -5811,7 +6567,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                                 if (!arg_properties)
                                         return log_oom();
                         } else {
-                                char *word, *state;
+                                const char *word, *state;
                                 size_t size;
 
                                 FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
@@ -5981,7 +6737,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         break;
 
                 case ARG_STATE: {
-                        char *word, *state;
+                        const char *word, *state;
                         size_t size;
 
                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
@@ -6022,7 +6778,6 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                 default:
                         assert_not_reached("Unhandled option");
                 }
-        }
 
         if (arg_transport != BUS_TRANSPORT_LOCAL && arg_scope != UNIT_FILE_SYSTEM) {
                 log_error("Cannot access user instance remotely.");
@@ -6062,11 +6817,12 @@ static int halt_parse_argv(int argc, char *argv[]) {
                 if (runlevel == '0' || runlevel == '6')
                         arg_force = 2;
 
-        while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0)
                 switch (c) {
 
                 case ARG_HELP:
-                        return halt_help();
+                        halt_help();
+                        return 0;
 
                 case ARG_HALT:
                         arg_action = ACTION_HALT;
@@ -6109,7 +6865,6 @@ static int halt_parse_argv(int argc, char *argv[]) {
                 default:
                         assert_not_reached("Unhandled option");
                 }
-        }
 
         if (arg_action == ACTION_REBOOT && (argc == optind || argc == optind + 1)) {
                 r = update_reboot_param_file(argc == optind + 1 ? argv[optind] : NULL);
@@ -6194,11 +6949,12 @@ static int shutdown_parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0)
                 switch (c) {
 
                 case ARG_HELP:
-                        return shutdown_help();
+                        shutdown_help();
+                        return 0;
 
                 case 'H':
                         arg_action = ACTION_HALT;
@@ -6247,7 +7003,6 @@ static int shutdown_parse_argv(int argc, char *argv[]) {
                 default:
                         assert_not_reached("Unhandled option");
                 }
-        }
 
         if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) {
                 r = parse_time_spec(argv[optind], &arg_when);
@@ -6308,11 +7063,12 @@ static int telinit_parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0)
                 switch (c) {
 
                 case ARG_HELP:
-                        return telinit_help();
+                        telinit_help();
+                        return 0;
 
                 case ARG_NO_WALL:
                         arg_no_wall = true;
@@ -6324,10 +7080,10 @@ static int telinit_parse_argv(int argc, char *argv[]) {
                 default:
                         assert_not_reached("Unhandled option");
                 }
-        }
 
         if (optind >= argc) {
-                telinit_help();
+                log_error("%s: required argument missing.",
+                          program_invocation_short_name);
                 return -EINVAL;
         }
 
@@ -6373,11 +7129,12 @@ static int runlevel_parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0)
                 switch (c) {
 
                 case ARG_HELP:
-                        return runlevel_help();
+                        runlevel_help();
+                        return 0;
 
                 case '?':
                         return -EINVAL;
@@ -6385,7 +7142,6 @@ static int runlevel_parse_argv(int argc, char *argv[]) {
                 default:
                         assert_not_reached("Unhandled option");
                 }
-        }
 
         if (optind < argc) {
                 log_error("Too many arguments.");
@@ -6484,14 +7240,14 @@ static int talk_initctl(void) {
                 if (errno == ENOENT)
                         return 0;
 
-                log_error("Failed to open "INIT_FIFO": %m");
+                log_error_errno(errno, "Failed to open "INIT_FIFO": %m");
                 return -errno;
         }
 
         errno = 0;
         r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
         if (r) {
-                log_error("Failed to write to "INIT_FIFO": %m");
+                log_error_errno(errno, "Failed to write to "INIT_FIFO": %m");
                 return errno > 0 ? -errno : -EIO;
         }
 
@@ -6576,6 +7332,10 @@ static int systemctl_main(sd_bus *bus, int argc, char *argv[], int bus_error) {
                 { "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 },
                 {}
         }, *verb = verbs;
 
@@ -6637,7 +7397,7 @@ found:
          * enable/disable */
         if (verb->bus == NOBUS) {
                 if (!bus && !avoid_bus()) {
-                        log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
+                        log_error_errno(bus_error, "Failed to get D-Bus connection: %m");
                         return -EIO;
                 }
 
@@ -6648,7 +7408,7 @@ found:
                 }
 
                 if ((verb->bus != FORCE || arg_force <= 0) && !bus) {
-                        log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
+                        log_error_errno(bus_error, "Failed to get D-Bus connection: %m");
                         return -EIO;
                 }
         }
@@ -6712,10 +7472,8 @@ static int reload_with_fallback(sd_bus *bus) {
         /* Nothing else worked, so let's try signals */
         assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
 
-        if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
-                log_error("kill() failed: %m");
-                return -errno;
-        }
+        if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0)
+                return log_error_errno(errno, "kill() failed: %m");
 
         return 0;
 }
@@ -6743,8 +7501,13 @@ done:
 
 static int halt_now(enum action a) {
 
-/* Make sure C-A-D is handled by the kernel from this
-         * point on... */
+        /* The kernel will automaticall flush ATA disks and suchlike
+         * on reboot(), but the file systems need to be synce'd
+         * explicitly in advance. */
+        sync();
+
+        /* Make sure C-A-D is handled by the kernel from this point
+         * on... */
         reboot(RB_ENABLE_CAD);
 
         switch (a) {
@@ -6821,7 +7584,7 @@ static int halt_main(sd_bus *bus) {
                                    m);
 
                 if (r < 0)
-                        log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
+                        log_warning_errno(r, "Failed to talk to shutdownd, proceeding with immediate shutdown: %m");
                 else {
                         char date[FORMAT_TIMESTAMP_MAX];
 
@@ -6840,7 +7603,7 @@ static int halt_main(sd_bus *bus) {
                 else {
                         r = utmp_put_shutdown();
                         if (r < 0)
-                                log_warning("Failed to write utmp record: %s", strerror(-r));
+                                log_warning_errno(r, "Failed to write utmp record: %m");
                 }
         }
 
@@ -6848,7 +7611,7 @@ static int halt_main(sd_bus *bus) {
                 return 0;
 
         r = halt_now(arg_action);
-        log_error("Failed to reboot: %s", strerror(-r));
+        log_error_errno(r, "Failed to reboot: %m");
 
         return r;
 }
@@ -6870,7 +7633,7 @@ static int runlevel_main(void) {
 }
 
 int main(int argc, char*argv[]) {
-        _cleanup_bus_unref_ sd_bus *bus = NULL;
+        _cleanup_bus_close_unref_ sd_bus *bus = NULL;
         int r;
 
         setlocale(LC_ALL, "");
@@ -6946,7 +7709,7 @@ int main(int argc, char*argv[]) {
 
                 r = send_shutdownd(arg_when, SD_SHUTDOWN_NONE, false, !arg_no_wall, m);
                 if (r < 0)
-                        log_warning("Failed to talk to shutdownd, shutdown hasn't been cancelled: %s", strerror(-r));
+                        log_warning_errno(r, "Failed to talk to shutdownd, shutdown hasn't been cancelled: %m");
                 break;
         }