chiark / gitweb /
systemctl: introduce reset-maintenance command
[elogind.git] / src / systemctl.c
index a9a975ee8188648ceb775d5b3ce0e6e1bc801986..acb89a5a8767719027acaf279dd5d3f47dbd9652 100644 (file)
 #include "strv.h"
 #include "dbus-common.h"
 #include "cgroup-show.h"
+#include "cgroup-util.h"
+#include "list.h"
 
 static const char *arg_type = NULL;
 static const char *arg_property = NULL;
 static bool arg_all = false;
-static bool arg_replace = false;
+static bool arg_fail = false;
 static bool arg_session = false;
 static bool arg_no_block = false;
 static bool arg_immediate = false;
@@ -57,7 +59,7 @@ static bool arg_no_wall = false;
 static bool arg_dry = false;
 static bool arg_quiet = false;
 static char **arg_wall = NULL;
-enum action {
+static enum action {
         ACTION_INVALID,
         ACTION_SYSTEMCTL,
         ACTION_HALT,
@@ -75,6 +77,11 @@ enum action {
         ACTION_RUNLEVEL,
         _ACTION_MAX
 } arg_action = ACTION_SYSTEMCTL;
+static enum dot {
+        DOT_ALL,
+        DOT_ORDER,
+        DOT_REQUIRE
+} arg_dot = DOT_ALL;
 
 static bool private_bus = false;
 
@@ -181,10 +188,11 @@ static int list_units(DBusConnection *bus, char **args, unsigned n) {
 
         dbus_message_iter_recurse(&iter, &sub);
 
-        printf("%-45s %-6s %-12s %-12s %-15s %s\n", "UNIT", "LOAD", "ACTIVE", "SUB", "JOB", "DESCRIPTION");
+        if (isatty(STDOUT_FILENO))
+                printf("%-45s %-6s %-12s %-12s %-15s %s\n", "UNIT", "LOAD", "ACTIVE", "SUB", "JOB", "DESCRIPTION");
 
         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
-                const char *id, *description, *load_state, *active_state, *sub_state, *unit_state, *job_type, *job_path, *dot;
+                const char *id, *description, *load_state, *active_state, *sub_state, *unit_path, *job_type, *job_path, *dot;
                 uint32_t job_id;
 
                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
@@ -200,7 +208,7 @@ static int list_units(DBusConnection *bus, char **args, unsigned n) {
                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
-                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_state, true) < 0 ||
+                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0 ||
                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &job_id, true) < 0 ||
                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &job_type, true) < 0 ||
                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, false) < 0) {
@@ -211,7 +219,7 @@ static int list_units(DBusConnection *bus, char **args, unsigned n) {
 
                 if ((!arg_type || ((dot = strrchr(id, '.')) &&
                                    streq(dot+1, arg_type))) &&
-                    (arg_all || !streq(active_state, "inactive"))) {
+                    (arg_all || !streq(active_state, "inactive") || job_id > 0)) {
 
                         int a = 0, b = 0;
 
@@ -221,7 +229,7 @@ static int list_units(DBusConnection *bus, char **args, unsigned n) {
                         printf("%-45s %-6s %-12s %-12s%n", id, load_state, active_state, sub_state, &a);
 
                         if (job_id != 0)
-                                printf(" %-15s%n", job_type, &b);
+                                printf(" => %-12s%n", job_type, &b);
                         else
                                 b = 1 + 15;
 
@@ -242,10 +250,258 @@ static int list_units(DBusConnection *bus, char **args, unsigned n) {
                 dbus_message_iter_next(&sub);
         }
 
-        if (arg_all)
-                printf("\n%u units listed.\n", k);
-        else
-                printf("\n%u live units listed. Pass --all to see dead units, too.\n", k);
+        if (isatty(STDOUT_FILENO)) {
+
+                printf("\nLOAD   = Load State, reflects whether the unit configuration was properly loaded.\n"
+                       "ACTIVE = Active State, the high-level unit activation state, i.e. generalization of the substate.\n"
+                       "SUB    = Substate, the low-level unit activation state, possible values depend on unit type.\n"
+                       "JOB    = Job, shows pending jobs for the unit.\n");
+
+                if (arg_all)
+                        printf("\n%u units listed.\n", k);
+                else
+                        printf("\n%u units listed. Pass --all to see inactive units, too.\n", k);
+        }
+
+        r = 0;
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        if (reply)
+                dbus_message_unref(reply);
+
+        dbus_error_free(&error);
+
+        return r;
+}
+
+static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
+        static const char * const colors[] = {
+                "Requires",              "[color=\"black\"]",
+                "RequiresOverridable",   "[color=\"black\"]",
+                "Requisite",             "[color=\"darkblue\"]",
+                "RequisiteOverridable",  "[color=\"darkblue\"]",
+                "Wants",                 "[color=\"darkgrey\"]",
+                "Conflicts",             "[color=\"red\"]",
+                "After",                 "[color=\"green\"]"
+        };
+
+        const char *c = NULL;
+        unsigned i;
+
+        assert(name);
+        assert(prop);
+        assert(iter);
+
+        for (i = 0; i < ELEMENTSOF(colors); i += 2)
+                if (streq(colors[i], prop)) {
+                        c = colors[i+1];
+                        break;
+                }
+
+        if (!c)
+                return 0;
+
+        if (arg_dot != DOT_ALL)
+                if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
+                        return 0;
+
+        switch (dbus_message_iter_get_arg_type(iter)) {
+
+        case DBUS_TYPE_ARRAY:
+
+                if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
+                        DBusMessageIter sub;
+
+                        dbus_message_iter_recurse(iter, &sub);
+
+                        while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+                                const char *s;
+
+                                assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
+                                dbus_message_iter_get_basic(&sub, &s);
+                                printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
+
+                                dbus_message_iter_next(&sub);
+                        }
+
+                        return 0;
+                }
+        }
+
+        return 0;
+}
+
+static int dot_one(DBusConnection *bus, const char *name, const char *path) {
+        DBusMessage *m = NULL, *reply = NULL;
+        const char *interface = "org.freedesktop.systemd1.Unit";
+        int r;
+        DBusError error;
+        DBusMessageIter iter, sub, sub2, sub3;
+
+        assert(bus);
+        assert(path);
+
+        dbus_error_init(&error);
+
+        if (!(m = dbus_message_new_method_call(
+                              "org.freedesktop.systemd1",
+                              path,
+                              "org.freedesktop.DBus.Properties",
+                              "GetAll"))) {
+                log_error("Could not allocate message.");
+                r = -ENOMEM;
+                goto finish;
+        }
+
+        if (!dbus_message_append_args(m,
+                                      DBUS_TYPE_STRING, &interface,
+                                      DBUS_TYPE_INVALID)) {
+                log_error("Could not append arguments to message.");
+                r = -ENOMEM;
+                goto finish;
+        }
+
+        if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+                log_error("Failed to issue method call: %s", error.message);
+                r = -EIO;
+                goto finish;
+        }
+
+        if (!dbus_message_iter_init(reply, &iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
+            dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY)  {
+                log_error("Failed to parse reply.");
+                r = -EIO;
+                goto finish;
+        }
+
+        dbus_message_iter_recurse(&iter, &sub);
+
+        while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+                const char *prop;
+
+                if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
+                        log_error("Failed to parse reply.");
+                        r = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_iter_recurse(&sub, &sub2);
+
+                if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
+                        log_error("Failed to parse reply.");
+                        r = -EIO;
+                        goto finish;
+                }
+
+                if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT)  {
+                        log_error("Failed to parse reply.");
+                        r = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_iter_recurse(&sub2, &sub3);
+
+                if (dot_one_property(name, prop, &sub3)) {
+                        log_error("Failed to parse reply.");
+                        r = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_iter_next(&sub);
+        }
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        if (reply)
+                dbus_message_unref(reply);
+
+        dbus_error_free(&error);
+
+        return r;
+}
+
+static int dot(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL, *reply = NULL;
+        DBusError error;
+        int r;
+        DBusMessageIter iter, sub, sub2;
+
+        dbus_error_init(&error);
+
+        assert(bus);
+
+        if (!(m = dbus_message_new_method_call(
+                              "org.freedesktop.systemd1",
+                              "/org/freedesktop/systemd1",
+                              "org.freedesktop.systemd1.Manager",
+                              "ListUnits"))) {
+                log_error("Could not allocate message.");
+                return -ENOMEM;
+        }
+
+        if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+                log_error("Failed to issue method call: %s", error.message);
+                r = -EIO;
+                goto finish;
+        }
+
+        if (!dbus_message_iter_init(reply, &iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
+            dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
+                log_error("Failed to parse reply.");
+                r = -EIO;
+                goto finish;
+        }
+
+        printf("digraph systemd {\n");
+
+        dbus_message_iter_recurse(&iter, &sub);
+        while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+                const char *id, *description, *load_state, *active_state, *sub_state, *unit_path;
+
+                if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
+                        log_error("Failed to parse reply.");
+                        r = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_iter_recurse(&sub, &sub2);
+
+                if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
+                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
+                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
+                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
+                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
+                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
+                        log_error("Failed to parse reply.");
+                        r = -EIO;
+                        goto finish;
+                }
+
+                if ((r = dot_one(bus, id, unit_path)) < 0)
+                        goto finish;
+
+                /* printf("\t\"%s\";\n", id); */
+                dbus_message_iter_next(&sub);
+        }
+
+        printf("}\n");
+
+        log_info("   Color legend: black     = Requires\n"
+                 "                 dark blue = Requisite\n"
+                 "                 dark grey = Wants\n"
+                 "                 red       = Conflicts\n"
+                 "                 green     = After\n");
+
+        if (isatty(fileno(stdout)))
+                log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
+                           "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
 
         r = 0;
 
@@ -490,6 +746,77 @@ finish:
         return r;
 }
 
+static bool unit_need_daemon_reload(DBusConnection *bus, const char *unit) {
+        DBusMessage *m, *reply;
+        dbus_bool_t b = FALSE;
+        DBusMessageIter iter, sub;
+        const char
+                *interface = "org.freedesktop.systemd1.Unit",
+                *property = "NeedDaemonReload",
+                *path;
+
+        /* We ignore all errors here, since this is used to show a warning only */
+
+        if (!(m = dbus_message_new_method_call(
+                              "org.freedesktop.systemd1",
+                              "/org/freedesktop/systemd1",
+                              "org.freedesktop.systemd1.Manager",
+                              "GetUnit")))
+                goto finish;
+
+        if (!dbus_message_append_args(m,
+                                      DBUS_TYPE_STRING, &unit,
+                                      DBUS_TYPE_INVALID))
+                goto finish;
+
+        if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
+                goto finish;
+
+        if (!dbus_message_get_args(reply, NULL,
+                                   DBUS_TYPE_OBJECT_PATH, &path,
+                                   DBUS_TYPE_INVALID))
+                goto finish;
+
+        dbus_message_unref(m);
+        if (!(m = dbus_message_new_method_call(
+                              "org.freedesktop.systemd1",
+                              path,
+                              "org.freedesktop.DBus.Properties",
+                              "Get")))
+                goto finish;
+
+        if (!dbus_message_append_args(m,
+                                      DBUS_TYPE_STRING, &interface,
+                                      DBUS_TYPE_STRING, &property,
+                                      DBUS_TYPE_INVALID)) {
+                goto finish;
+        }
+
+        dbus_message_unref(reply);
+        if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
+                goto finish;
+
+        if (!dbus_message_iter_init(reply, &iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
+                goto finish;
+
+        dbus_message_iter_recurse(&iter, &sub);
+
+        if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
+                goto finish;
+
+        dbus_message_iter_get_basic(&sub, &b);
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        if (reply)
+                dbus_message_unref(reply);
+
+        return b;
+}
+
 typedef struct WaitData {
         Set *set;
         bool failed;
@@ -608,6 +935,7 @@ static int start_unit_one(
 
         DBusMessage *m = NULL, *reply = NULL;
         DBusError error;
+        const char *path;
         int r;
 
         assert(bus);
@@ -651,18 +979,21 @@ static int start_unit_one(
                 goto finish;
         }
 
+        if (!dbus_message_get_args(reply, &error,
+                                   DBUS_TYPE_OBJECT_PATH, &path,
+                                   DBUS_TYPE_INVALID)) {
+                log_error("Failed to parse reply: %s", error.message);
+                r = -EIO;
+                goto finish;
+        }
+
+        if (unit_need_daemon_reload(bus, name))
+                log_warning("Unit file of created job changed on disk, 'systemctl %s daemon-reload' recommended.",
+                            arg_session ? "--session" : "--system");
+
         if (!arg_no_block) {
-                const char *path;
                 char *p;
 
-                if (!dbus_message_get_args(reply, &error,
-                                           DBUS_TYPE_OBJECT_PATH, &path,
-                                           DBUS_TYPE_INVALID)) {
-                        log_error("Failed to parse reply: %s", error.message);
-                        r = -EIO;
-                        goto finish;
-                }
-
                 if (!(p = strdup(path))) {
                         log_error("Failed to duplicate path.");
                         r = -ENOMEM;
@@ -718,7 +1049,7 @@ static int start_unit(DBusConnection *bus, char **args, unsigned n) {
                 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
                 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
                 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
-                [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_SERVICE,
+                [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET,
                 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET
         };
 
@@ -731,17 +1062,20 @@ static int start_unit(DBusConnection *bus, char **args, unsigned n) {
 
         if (arg_action == ACTION_SYSTEMCTL) {
                 method =
-                        streq(args[0], "stop")    ? "StopUnit" :
-                        streq(args[0], "reload")  ? "ReloadUnit" :
-                        streq(args[0], "restart") ? "RestartUnit" :
-                                                    "StartUnit";
+                        streq(args[0], "stop")                  ? "StopUnit" :
+                        streq(args[0], "reload")                ? "ReloadUnit" :
+                        streq(args[0], "restart")               ? "RestartUnit" :
+                        streq(args[0], "try-restart")           ? "TryRestartUnit" :
+                        streq(args[0], "reload-or-restart")     ? "ReloadOrRestartUnit" :
+                        streq(args[0], "reload-or-try-restart") ? "ReloadOrTryRestartUnit" :
+                                                                  "StartUnit";
 
                 mode =
                         (streq(args[0], "isolate") ||
                          streq(args[0], "rescue")  ||
                          streq(args[0], "emergency")) ? "isolate" :
-                                          arg_replace ? "replace" :
-                                                        "fail";
+                                             arg_fail ? "fail" :
+                                                        "replace";
 
                 one_name = table[verb_to_action(args[0])];
 
@@ -792,12 +1126,17 @@ finish:
 }
 
 static int start_special(DBusConnection *bus, char **args, unsigned n) {
+        int r;
+
         assert(bus);
         assert(args);
 
-        warn_wall(verb_to_action(args[0]));
+        r = start_unit(bus, args, n);
+
+        if (r >= 0)
+                warn_wall(verb_to_action(args[0]));
 
-        return start_unit(bus, args, n);
+        return r;
 }
 
 static int check_unit(DBusConnection *bus, char **args, unsigned n) {
@@ -922,6 +1261,100 @@ finish:
         return r;
 }
 
+typedef struct ExecStatusInfo {
+        char *path;
+        char **argv;
+
+        bool ignore;
+
+        usec_t start_timestamp;
+        usec_t exit_timestamp;
+        pid_t pid;
+        int code;
+        int status;
+
+        LIST_FIELDS(struct ExecStatusInfo, exec);
+} ExecStatusInfo;
+
+static void exec_status_info_free(ExecStatusInfo *i) {
+        assert(i);
+
+        free(i->path);
+        strv_free(i->argv);
+        free(i);
+}
+
+static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
+        uint64_t start_timestamp, exit_timestamp;
+        DBusMessageIter sub2, sub3;
+        const char*path;
+        unsigned n;
+        uint32_t pid;
+        int32_t code, status;
+        dbus_bool_t ignore;
+
+        assert(i);
+        assert(i);
+
+        if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
+                return -EIO;
+
+        dbus_message_iter_recurse(sub, &sub2);
+
+        if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
+                return -EIO;
+
+        if (!(i->path = strdup(path)))
+                return -ENOMEM;
+
+        if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
+            dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
+                return -EIO;
+
+        n = 0;
+        dbus_message_iter_recurse(&sub2, &sub3);
+        while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
+                assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
+                dbus_message_iter_next(&sub3);
+                n++;
+        }
+
+
+        if (!(i->argv = new0(char*, n+1)))
+                return -ENOMEM;
+
+        n = 0;
+        dbus_message_iter_recurse(&sub2, &sub3);
+        while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
+                const char *s;
+
+                assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
+                dbus_message_iter_get_basic(&sub3, &s);
+                dbus_message_iter_next(&sub3);
+
+                if (!(i->argv[n++] = strdup(s)))
+                        return -ENOMEM;
+        }
+
+        if (!dbus_message_iter_next(&sub2) ||
+            bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
+            bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
+            bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
+            bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
+            bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
+            bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
+                return -EIO;
+
+        i->ignore = ignore;
+        i->start_timestamp = (usec_t) start_timestamp;
+        i->exit_timestamp = (usec_t) exit_timestamp;
+        i->pid = (pid_t) pid;
+        i->code = code;
+        i->status = status;
+
+        return 0;
+}
+
 typedef struct UnitStatusInfo {
         const char *id;
         const char *load_state;
@@ -933,6 +1366,8 @@ typedef struct UnitStatusInfo {
         const char *fragment_path;
         const char *default_control_group;
 
+        bool need_daemon_reload;
+
         /* Service */
         pid_t main_pid;
         pid_t control_pid;
@@ -947,6 +1382,7 @@ typedef struct UnitStatusInfo {
         /* Socket */
         unsigned n_accepted;
         unsigned n_connections;
+        bool accept;
 
         /* Device */
         const char *sysfs_path;
@@ -956,9 +1392,13 @@ typedef struct UnitStatusInfo {
 
         /* Swap */
         const char *what;
+
+        LIST_HEAD(ExecStatusInfo, exec);
 } UnitStatusInfo;
 
 static void print_status_info(UnitStatusInfo *i) {
+        ExecStatusInfo *p;
+
         assert(i);
 
         /* This shows pretty information about a unit. See
@@ -978,14 +1418,23 @@ static void print_status_info(UnitStatusInfo *i) {
         else
                 printf("\t  Loaded: %s\n", strna(i->load_state));
 
-        if (streq_ptr(i->active_state, "maintenance"))
-                printf("\t  Active: " ANSI_HIGHLIGHT_ON "%s (%s)" ANSI_HIGHLIGHT_OFF "\n",
-                       strna(i->active_state),
-                       strna(i->sub_state));
-        else
-                printf("\t  Active: %s (%s)\n",
-                       strna(i->active_state),
-                       strna(i->sub_state));
+        if (streq_ptr(i->active_state, "maintenance")) {
+                        if (streq_ptr(i->active_state, i->sub_state))
+                                printf("\t  Active: " ANSI_HIGHLIGHT_ON "%s" ANSI_HIGHLIGHT_OFF "\n",
+                                       strna(i->active_state));
+                        else
+                                printf("\t  Active: " ANSI_HIGHLIGHT_ON "%s (%s)" ANSI_HIGHLIGHT_OFF "\n",
+                                       strna(i->active_state),
+                                       strna(i->sub_state));
+        } else {
+                if (streq_ptr(i->active_state, i->sub_state))
+                        printf("\t  Active: %s\n",
+                               strna(i->active_state));
+                else
+                        printf("\t  Active: %s (%s)\n",
+                               strna(i->active_state),
+                               strna(i->sub_state));
+        }
 
         if (i->sysfs_path)
                 printf("\t  Device: %s\n", i->sysfs_path);
@@ -994,17 +1443,41 @@ static void print_status_info(UnitStatusInfo *i) {
         else if (i->what)
                 printf("\t    What: %s\n", i->what);
 
-        if (i->status_text)
-                printf("\t  Status: \"%s\"\n", i->status_text);
-
-        if (i->id && endswith(i->id, ".socket"))
+        if (i->accept)
                 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
 
+        LIST_FOREACH(exec, p, i->exec) {
+                char *t;
+
+                /* Only show exited processes here */
+                if (p->code == 0)
+                        continue;
+
+                t = strv_join(p->argv, " ");
+                printf("\t  Exited: %u (%s, code=%s, ", p->pid, strna(t), sigchld_code_to_string(p->code));
+                free(t);
+
+                if (p->code == CLD_EXITED)
+                        printf("status=%i", p->status);
+                else
+                        printf("signal=%s", signal_to_string(p->status));
+                printf(")\n");
+
+                if (i->main_pid == p->pid &&
+                    i->start_timestamp == p->start_timestamp &&
+                    i->exit_timestamp == p->start_timestamp)
+                        /* Let's not show this twice */
+                        i->main_pid = 0;
+
+                if (p->pid == i->control_pid)
+                        i->control_pid = 0;
+        }
+
         if (i->main_pid > 0 || i->control_pid > 0) {
                 printf("\t");
 
                 if (i->main_pid > 0) {
-                        printf(" Process: %u", (unsigned) i->main_pid);
+                        printf("    Main: %u", (unsigned) i->main_pid);
 
                         if (i->running) {
                                 char *t = NULL;
@@ -1019,7 +1492,7 @@ static void print_status_info(UnitStatusInfo *i) {
                                 if (i->exit_code == CLD_EXITED)
                                         printf("status=%i", i->exit_status);
                                 else
-                                        printf("signal=%s", strsignal(i->exit_status));
+                                        printf("signal=%s", signal_to_string(i->exit_status));
                                 printf(")");
                         }
                 }
@@ -1042,6 +1515,9 @@ static void print_status_info(UnitStatusInfo *i) {
                 printf("\n");
         }
 
+        if (i->status_text)
+                printf("\t  Status: \"%s\"\n", i->status_text);
+
         if (i->default_control_group) {
                 unsigned c;
 
@@ -1052,8 +1528,12 @@ static void print_status_info(UnitStatusInfo *i) {
                 else
                         c = 0;
 
-                show_cgroup_recursive(i->default_control_group, "\t\t  ", c);
+                show_cgroup_by_path(i->default_control_group, "\t\t  ", c);
         }
+
+        if (i->need_daemon_reload)
+                printf("\n" ANSI_HIGHLIGHT_ON "Warning:" ANSI_HIGHLIGHT_OFF " Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
+                       arg_session ? "--session" : "--system");
 }
 
 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
@@ -1093,6 +1573,19 @@ static int status_property(const char *name, DBusMessageIter *iter, UnitStatusIn
                 break;
         }
 
+        case DBUS_TYPE_BOOLEAN: {
+                dbus_bool_t b;
+
+                dbus_message_iter_get_basic(iter, &b);
+
+                if (streq(name, "Accept"))
+                        i->accept = b;
+                else if (streq(name, "NeedDaemonReload"))
+                        i->need_daemon_reload = b;
+
+                break;
+        }
+
         case DBUS_TYPE_UINT32: {
                 uint32_t u;
 
@@ -1141,6 +1634,34 @@ static int status_property(const char *name, DBusMessageIter *iter, UnitStatusIn
 
                 break;
         }
+
+        case DBUS_TYPE_ARRAY: {
+
+                if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
+                    startswith(name, "Exec")) {
+                        DBusMessageIter sub;
+
+                        dbus_message_iter_recurse(iter, &sub);
+                        while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
+                                ExecStatusInfo *info;
+                                int r;
+
+                                if (!(info = new0(ExecStatusInfo, 1)))
+                                        return -ENOMEM;
+
+                                if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
+                                        free(info);
+                                        return r;
+                                }
+
+                                LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
+
+                                dbus_message_iter_next(&sub);
+                        }
+                }
+
+                break;
+        }
         }
 
         return 0;
@@ -1254,7 +1775,6 @@ static int print_property(const char *name, DBusMessageIter *iter) {
                         bool space = false;
 
                         dbus_message_iter_recurse(iter, &sub);
-
                         if (arg_all ||
                             dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
                                 printf("%s=", name);
@@ -1274,11 +1794,11 @@ static int print_property(const char *name, DBusMessageIter *iter) {
                         }
 
                         return 0;
+
                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_BYTE) {
                         DBusMessageIter sub;
 
                         dbus_message_iter_recurse(iter, &sub);
-
                         if (arg_all ||
                             dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
                                 printf("%s=", name);
@@ -1297,11 +1817,11 @@ static int print_property(const char *name, DBusMessageIter *iter) {
                         }
 
                         return 0;
+
                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
                         DBusMessageIter sub, sub2;
 
                         dbus_message_iter_recurse(iter, &sub);
-
                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
                                 const char *type, *path;
 
@@ -1315,11 +1835,11 @@ static int print_property(const char *name, DBusMessageIter *iter) {
                         }
 
                         return 0;
+
                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
                         DBusMessageIter sub, sub2;
 
                         dbus_message_iter_recurse(iter, &sub);
-
                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
                                 const char *base;
                                 uint64_t value, next_elapse;
@@ -1341,59 +1861,39 @@ static int print_property(const char *name, DBusMessageIter *iter) {
                         }
 
                         return 0;
-                } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
 
-                        DBusMessageIter sub, sub2, sub3;
+                } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
+                        DBusMessageIter sub;
 
                         dbus_message_iter_recurse(iter, &sub);
-
                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
-                                const char *path;
-                                uint64_t start_time, exit_time;
-                                uint32_t pid;
-                                int32_t code, status;
-
-                                dbus_message_iter_recurse(&sub, &sub2);
-
-                                if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
-                                        continue;
-
-                                if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
-                                    dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
-                                        continue;
-
-                                printf("%s={ path=%s ; argv[]=", name, path);
-
-                                dbus_message_iter_recurse(&sub2, &sub3);
-
-                                while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
-                                        const char *s;
-
-                                        assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
-                                        dbus_message_iter_get_basic(&sub3, &s);
-                                        printf("%s ", s);
-                                        dbus_message_iter_next(&sub3);
-                                }
-
-                                if (dbus_message_iter_next(&sub2) &&
-                                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_time, true) >= 0 &&
-                                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_time, true) >= 0 &&
-                                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) >= 0 &&
-                                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) >= 0 &&
-                                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) >= 0) {
+                                ExecStatusInfo info;
 
+                                zero(info);
+                                if (exec_status_info_deserialize(&sub, &info) >= 0) {
                                         char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
+                                        char *t;
+
+                                        t = strv_join(info.argv, " ");
+
+                                        printf("%s={ path=%s ; argv[]=%s ; ignore=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
+                                               name,
+                                               strna(info.path),
+                                               strna(t),
+                                               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,
+                                               sigchld_code_to_string(info.code),
+                                               info.status,
+                                               info.code == CLD_EXITED ? "" : "/",
+                                               strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
 
-                                        printf("; start=%s ; stop=%s ; pid=%u ; code=%s ; status=%i/%s",
-                                               strna(format_timestamp(timestamp1, sizeof(timestamp1), start_time)),
-                                               strna(format_timestamp(timestamp2, sizeof(timestamp2), exit_time)),
-                                               (unsigned) pid,
-                                               sigchld_code_to_string(code),
-                                               status,
-                                               strempty(code == CLD_EXITED ? NULL : strsignal(status)));
+                                        free(t);
                                 }
 
-                                printf(" }\n");
+                                free(info.path);
+                                strv_free(info.argv);
 
                                 dbus_message_iter_next(&sub);
                         }
@@ -1417,6 +1917,7 @@ static int show_one(DBusConnection *bus, const char *path, bool show_properties,
         DBusError error;
         DBusMessageIter iter, sub, sub2, sub3;
         UnitStatusInfo info;
+        ExecStatusInfo *p;
 
         assert(bus);
         assert(path);
@@ -1506,6 +2007,11 @@ static int show_one(DBusConnection *bus, const char *path, bool show_properties,
         if (!show_properties)
                 print_status_info(&info);
 
+        while ((p = info.exec)) {
+                LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
+                exec_status_info_free(p);
+        }
+
         r = 0;
 
 finish:
@@ -2133,10 +2639,11 @@ static int clear_jobs(DBusConnection *bus, char **args, unsigned n) {
                 assert(arg_action == ACTION_SYSTEMCTL);
 
                 method =
-                        streq(args[0], "clear-jobs")    ? "ClearJobs" :
-                        streq(args[0], "daemon-reload") ? "Reload" :
-                        streq(args[0], "daemon-reexec") ? "Reexecute" :
-                                                          "Exit";
+                        streq(args[0], "clear-jobs")        ? "ClearJobs" :
+                        streq(args[0], "daemon-reload")     ? "Reload" :
+                        streq(args[0], "daemon-reexec")     ? "Reexecute" :
+                        streq(args[0], "reset-maintenance") ? "ResetMaintenance" :
+                                                              "Exit";
         }
 
         if (!(m = dbus_message_new_method_call(
@@ -2176,6 +2683,63 @@ finish:
         return r;
 }
 
+static int reset_maintenance(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL, *reply = NULL;
+        unsigned i;
+        int r;
+        DBusError error;
+
+        assert(bus);
+        dbus_error_init(&error);
+
+        if (n <= 1)
+                return clear_jobs(bus, args, n);
+
+        for (i = 1; i < n; i++) {
+
+                if (!(m = dbus_message_new_method_call(
+                                      "org.freedesktop.systemd1",
+                                      "/org/freedesktop/systemd1",
+                                      "org.freedesktop.systemd1.Manager",
+                                      "ResetMaintenanceUnit"))) {
+                        log_error("Could not allocate message.");
+                        r = -ENOMEM;
+                        goto finish;
+                }
+
+                if (!dbus_message_append_args(m,
+                                              DBUS_TYPE_STRING, args + i,
+                                              DBUS_TYPE_INVALID)) {
+                        log_error("Could not append arguments to message.");
+                        r = -ENOMEM;
+                        goto finish;
+                }
+
+                if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+                        log_error("Failed to issue method call: %s", error.message);
+                        r = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_unref(m);
+                dbus_message_unref(reply);
+                m = reply = NULL;
+        }
+
+        r = 0;
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        if (reply)
+                dbus_message_unref(reply);
+
+        dbus_error_free(&error);
+
+        return r;
+}
+
 static int show_enviroment(DBusConnection *bus, char **args, unsigned n) {
         DBusMessage *m = NULL, *reply = NULL;
         DBusError error;
@@ -2326,14 +2890,17 @@ finish:
 static int systemctl_help(void) {
 
         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
-               "Send control commands to the systemd manager.\n\n"
+               "Send control commands to or query the systemd manager.\n\n"
                "  -h --help          Show this help\n"
                "  -t --type=TYPE     List only units of a particular type\n"
                "  -p --property=NAME Show only properties by this name\n"
                "  -a --all           Show all units/properties, including dead/empty ones\n"
-               "     --replace       When installing a new job, replace existing conflicting ones\n"
+               "     --fail          When installing a new job, fail if conflicting jobs are\n"
+               "                     pending\n"
                "     --system        Connect to system bus\n"
                "     --session       Connect to session bus\n"
+               "     --order         When generating graph for dot, show only order\n"
+               "     --require        When generating graph for dot, show only requirement\n"
                "  -q --quiet         Suppress output\n"
                "     --no-block      Do not wait until operation finished\n"
                "     --no-wall       Don't send wall message before halt/power-off/reboot\n\n"
@@ -2341,18 +2908,27 @@ static int systemctl_help(void) {
                "  list-units                      List units\n"
                "  start [NAME...]                 Start one or more units\n"
                "  stop [NAME...]                  Stop one or more units\n"
-               "  restart [NAME...]               Restart one or more units\n"
                "  reload [NAME...]                Reload one or more units\n"
+               "  restart [NAME...]               Start or restart one or more units\n"
+               "  try-restart [NAME...]           Restart one or more units if active\n"
+               "  reload-or-restart [NAME...]     Reload one or more units is possible,\n"
+               "                                  otherwise start or restart\n"
+               "  reload-or-try-restart [NAME...] Reload one or more units is possible,\n"
+               "                                  otherwise restart if active\n"
                "  isolate [NAME]                  Start one unit and stop all others\n"
-               "  check [NAME...]                 Check whether any of the passed units are active\n"
+               "  check [NAME...]                 Check whether units are active\n"
                "  status [NAME...]                Show status of one or more units\n"
-               "  show [NAME...|JOB...]           Show properties of one or more units/jobs/manager\n"
+               "  show [NAME...|JOB...]           Show properties of one or more\n"
+               "                                  units/jobs/manager\n"
+               "  reset-maintenance [NAME...]     Reset maintenance state for all, one\n"
+               "                                  or more units\n"
                "  load [NAME...]                  Load one or more units\n"
                "  list-jobs                       List jobs\n"
                "  cancel [JOB...]                 Cancel one or more jobs\n"
                "  clear-jobs                      Cancel all jobs\n"
                "  monitor                         Monitor unit/job changes\n"
                "  dump                            Dump server status\n"
+               "  dot                             Dump dependency graph for dot(1)\n"
                "  snapshot [NAME]                 Create a snapshot\n"
                "  delete [NAME...]                Remove one or more snapshots\n"
                "  daemon-reload                   Reload systemd manager configuration\n"
@@ -2364,9 +2940,9 @@ static int systemctl_help(void) {
                "  halt                            Shut down and halt the system\n"
                "  poweroff                        Shut down and power-off the system\n"
                "  reboot                          Shut down and reboot the system\n"
-               "  default                         Enter default mode\n"
-               "  rescue                          Enter rescue mode\n"
-               "  emergency                       Enter emergency mode\n",
+               "  rescue                          Enter system rescue mode\n"
+               "  emergency                       Enter system emergency mode\n"
+               "  default                         Enter system default mode\n",
                program_invocation_short_name);
 
         return 0;
@@ -2440,11 +3016,13 @@ static int runlevel_help(void) {
 static int systemctl_parse_argv(int argc, char *argv[]) {
 
         enum {
-                ARG_REPLACE = 0x100,
+                ARG_FAIL = 0x100,
                 ARG_SESSION,
                 ARG_SYSTEM,
                 ARG_NO_BLOCK,
-                ARG_NO_WALL
+                ARG_NO_WALL,
+                ARG_ORDER,
+                ARG_REQUIRE
         };
 
         static const struct option options[] = {
@@ -2452,12 +3030,14 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                 { "type",      required_argument, NULL, 't'          },
                 { "property",  required_argument, NULL, 'p'          },
                 { "all",       no_argument,       NULL, 'a'          },
-                { "replace",   no_argument,       NULL, ARG_REPLACE  },
+                { "fail",      no_argument,       NULL, ARG_FAIL     },
                 { "session",   no_argument,       NULL, ARG_SESSION  },
                 { "system",    no_argument,       NULL, ARG_SYSTEM   },
                 { "no-block",  no_argument,       NULL, ARG_NO_BLOCK },
                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL  },
                 { "quiet",     no_argument,       NULL, 'q'          },
+                { "order",     no_argument,       NULL, ARG_ORDER    },
+                { "require",   no_argument,       NULL, ARG_REQUIRE  },
                 { NULL,        0,                 NULL, 0            }
         };
 
@@ -2491,8 +3071,8 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         arg_all = true;
                         break;
 
-                case ARG_REPLACE:
-                        arg_replace = true;
+                case ARG_FAIL:
+                        arg_fail = true;
                         break;
 
                 case ARG_SESSION:
@@ -2511,6 +3091,14 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         arg_no_wall = true;
                         break;
 
+                case ARG_ORDER:
+                        arg_dot = DOT_ORDER;
+                        break;
+
+                case ARG_REQUIRE:
+                        arg_dot = DOT_REQUIRE;
+                        break;
+
                 case 'q':
                         arg_quiet = true;
                         break;
@@ -2897,7 +3485,7 @@ static int talk_upstart(void) {
         if (utmp_get_runlevel(&previous, NULL) < 0)
                 previous = 'N';
 
-        if (!(bus = dbus_connection_open("unix:abstract=/com/ubuntu/upstart", &error))) {
+        if (!(bus = dbus_connection_open_private("unix:abstract=/com/ubuntu/upstart", &error))) {
                 if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
                         r = 0;
                         goto finish;
@@ -2961,8 +3549,10 @@ finish:
         if (reply)
                 dbus_message_unref(reply);
 
-        if (bus)
+        if (bus) {
+                dbus_connection_close(bus);
                 dbus_connection_unref(bus);
+        }
 
         dbus_error_free(&error);
 
@@ -3025,12 +3615,16 @@ static int systemctl_main(DBusConnection *bus, int argc, char *argv[]) {
                 { "stop",              MORE,  2, start_unit      },
                 { "reload",            MORE,  2, start_unit      },
                 { "restart",           MORE,  2, start_unit      },
+                { "try-restart",       MORE,  2, start_unit      },
+                { "reload-or-restart", MORE,  2, start_unit      },
+                { "reload-or-try-restart", MORE, 2, start_unit   },
                 { "isolate",           EQUAL, 2, start_unit      },
                 { "check",             MORE,  2, check_unit      },
                 { "show",              MORE,  1, show            },
                 { "status",            MORE,  2, show            },
                 { "monitor",           EQUAL, 1, monitor         },
                 { "dump",              EQUAL, 1, dump            },
+                { "dot",               EQUAL, 1, dot             },
                 { "snapshot",          LESS,  2, snapshot        },
                 { "delete",            MORE,  2, delete_snapshot },
                 { "daemon-reload",     EQUAL, 1, clear_jobs      },
@@ -3044,7 +3638,8 @@ static int systemctl_main(DBusConnection *bus, int argc, char *argv[]) {
                 { "reboot",            EQUAL, 1, start_special   },
                 { "default",           EQUAL, 1, start_special   },
                 { "rescue",            EQUAL, 1, start_special   },
-                { "emergency",         EQUAL, 1, start_special   }
+                { "emergency",         EQUAL, 1, start_special   },
+                { "reset-maintenance", MORE,  1, reset_maintenance },
         };
 
         int left;
@@ -3131,32 +3726,40 @@ static int reload_with_fallback(DBusConnection *bus) {
 static int start_with_fallback(DBusConnection *bus) {
         int r;
 
-        warn_wall(arg_action);
 
         if (bus) {
                 /* First, try systemd via D-Bus. */
                 if ((r = start_unit(bus, NULL, 0)) > 0)
-                        return 0;
+                        goto done;
 
                 /* Hmm, talking to systemd via D-Bus didn't work. Then
                  * let's try to talk to Upstart via D-Bus. */
                 if ((r = talk_upstart()) > 0)
-                        return 0;
+                        goto done;
         }
 
         /* Nothing else worked, so let's try
          * /dev/initctl */
         if ((r = talk_initctl()) != 0)
-                return 0;
+                goto done;
 
         log_error("Failed to talk to init daemon.");
         return -EIO;
+
+done:
+        warn_wall(arg_action);
+        return 0;
 }
 
 static int halt_main(DBusConnection *bus) {
         int r;
 
-        if (!arg_immediate)
+        if (geteuid() != 0) {
+                log_error("Must to be root.");
+                return -EPERM;
+        }
+
+        if (!arg_dry && !arg_immediate)
                 return start_with_fallback(bus);
 
         if (!arg_no_wtmp)
@@ -3280,8 +3883,10 @@ int main(int argc, char*argv[]) {
 
 finish:
 
-        if (bus)
+        if (bus) {
+                dbus_connection_close(bus);
                 dbus_connection_unref(bus);
+        }
 
         dbus_error_free(&error);