chiark / gitweb /
journal: fix field retrieval by name
[elogind.git] / src / loginctl.c
index 022f69e7eb909568f7afcbf0e9e4c3213d09bfee..1be47c8dde9b8a3340c251a947ebbf49d5a3a2f6 100644 (file)
@@ -24,6 +24,7 @@
 #include <errno.h>
 #include <string.h>
 #include <getopt.h>
+#include <pwd.h>
 
 #include "log.h"
 #include "util.h"
 #include "pager.h"
 #include "dbus-common.h"
 #include "build.h"
+#include "strv.h"
+#include "cgroup-show.h"
+#include "sysfs-show.h"
 
+static char **arg_property = NULL;
+static bool arg_all = false;
 static bool arg_no_pager = false;
+static const char *arg_kill_who = NULL;
+static int arg_signal = SIGTERM;
 static enum transport {
         TRANSPORT_NORMAL,
         TRANSPORT_SSH,
@@ -56,6 +64,8 @@ static bool on_tty(void) {
 }
 
 static void pager_open_if_enabled(void) {
+
+        /* Cache result before we open the pager */
         on_tty();
 
         if (!arg_no_pager)
@@ -323,207 +333,1580 @@ finish:
         return r;
 }
 
-static int help(void) {
+typedef struct SessionStatusInfo {
+        const char *id;
+        uid_t uid;
+        const char *name;
+        usec_t timestamp;
+        const char *control_group;
+        int vtnr;
+        const char *seat;
+        const char *tty;
+        const char *display;
+        bool remote;
+        const char *remote_host;
+        const char *remote_user;
+        const char *service;
+        pid_t leader;
+        const char *type;
+        bool active;
+} SessionStatusInfo;
+
+typedef struct UserStatusInfo {
+        uid_t uid;
+        const char *name;
+        usec_t timestamp;
+        const char *control_group;
+        const char *state;
+        char **sessions;
+        const char *display;
+} UserStatusInfo;
+
+typedef struct SeatStatusInfo {
+        const char *id;
+        const char *active_session;
+        char **sessions;
+} SeatStatusInfo;
+
+static void print_session_status_info(SessionStatusInfo *i) {
+        char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;
+        char since2[FORMAT_TIMESTAMP_MAX], *s2;
+        assert(i);
+
+        printf("%s - ", strna(i->id));
+
+        if (i->name)
+                printf("%s (%u)\n", i->name, (unsigned) i->uid);
+        else
+                printf("%u\n", (unsigned) i->uid);
 
-        printf("%s [OPTIONS...] {COMMAND} ...\n\n"
-               "Send control commands to or query the login manager.\n\n"
-               "  -h --help           Show this help\n"
-               "     --version        Show package version\n"
-               "  -H --host=[user@]host\n"
-               "                      Show information for remote host\n"
-               "  -P --privileged     Acquire privileges before execution\n"
-               "     --no-pager       Do not pipe output into a pager.\n"
-               "Commands:\n"
-               "  list-sessions                   List sessions\n"
-               "  list-users                      List users\n"
-               "  list-seats                      List seats\n",
-               program_invocation_short_name);
+        s1 = format_timestamp_pretty(since1, sizeof(since1), i->timestamp);
+        s2 = format_timestamp(since2, sizeof(since2), i->timestamp);
 
-        return 0;
-}
+        if (s1)
+                printf("\t   Since: %s; %s\n", s2, s1);
+        else if (s2)
+                printf("\t   Since: %s\n", s2);
 
-static int parse_argv(int argc, char *argv[]) {
+        if (i->leader > 0) {
+                char *t = NULL;
 
-        enum {
-                ARG_VERSION = 0x100,
-                ARG_NO_PAGER
-        };
+                printf("\t  Leader: %u", (unsigned) i->leader);
 
-        static const struct option options[] = {
-                { "help",      no_argument,       NULL, 'h'           },
-                { "version",   no_argument,       NULL, ARG_VERSION   },
-                { "no-pager",  no_argument,       NULL, ARG_NO_PAGER  },
-                { "host",      required_argument, NULL, 'H'           },
-                { "privileged",no_argument,       NULL, 'P'           },
-                { NULL,        0,                 NULL, 0             }
-        };
+                get_process_comm(i->leader, &t);
+                if (t) {
+                        printf(" (%s)", t);
+                        free(t);
+                }
 
-        int c;
+                printf("\n");
+        }
 
-        assert(argc >= 0);
-        assert(argv);
+        if (i->seat) {
+                printf("\t    Seat: %s", i->seat);
 
-        while ((c = getopt_long(argc, argv, "hH:P", options, NULL)) >= 0) {
+                if (i->vtnr > 0)
+                        printf("; vc%i", i->vtnr);
 
-                switch (c) {
+                printf("\n");
+        }
 
-                case 'h':
-                        help();
-                        return 0;
+        if (i->tty)
+                printf("\t     TTY: %s\n", i->tty);
+        else if (i->display)
+                printf("\t Display: %s\n", i->display);
 
-                case ARG_VERSION:
-                        puts(PACKAGE_STRING);
-                        puts(DISTRIBUTION);
-                        puts(SYSTEMD_FEATURES);
-                        return 0;
+        if (i->remote_host && i->remote_user)
+                printf("\t  Remote: %s@%s\n", i->remote_user, i->remote_host);
+        else if (i->remote_host)
+                printf("\t  Remote: %s\n", i->remote_host);
+        else if (i->remote_user)
+                printf("\t  Remote: user %s\n", i->remote_user);
+        else if (i->remote)
+                printf("\t  Remote: Yes\n");
 
-                case ARG_NO_PAGER:
-                        arg_no_pager = true;
-                        break;
+        if (i->service) {
+                printf("\t Service: %s", i->service);
 
-                case 'P':
-                        arg_transport = TRANSPORT_POLKIT;
-                        break;
+                if (i->type)
+                        printf("; type %s", i->type);
 
-                case 'H':
-                        arg_transport = TRANSPORT_SSH;
-                        arg_host = optarg;
-                        break;
+                printf("\n");
+        } else if (i->type)
+                printf("\t    Type: %s\n", i->type);
 
-                case '?':
-                        return -EINVAL;
+        printf("\t  Active: %s\n", yes_no(i->active));
 
-                default:
-                        log_error("Unknown option code %c", c);
-                        return -EINVAL;
+        if (i->control_group) {
+                unsigned c;
+
+                printf("\t  CGroup: %s\n", i->control_group);
+
+                if (arg_transport != TRANSPORT_SSH) {
+                        c = columns();
+                        if (c > 18)
+                                c -= 18;
+                        else
+                                c = 0;
+
+                        show_cgroup_by_path(i->control_group, "\t\t  ", c);
                 }
         }
-
-        return 1;
 }
 
-static int loginctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
+static void print_user_status_info(UserStatusInfo *i) {
+        char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;
+        char since2[FORMAT_TIMESTAMP_MAX], *s2;
+        assert(i);
 
-        static const struct {
-                const char* verb;
-                const enum {
-                        MORE,
-                        LESS,
-                        EQUAL
-                } argc_cmp;
-                const int argc;
-                int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
-        } verbs[] = {
-                { "list-sessions",         LESS,   1, list_sessions    },
-                { "list-users",            EQUAL,  1, list_users       },
-                { "list-seats",            EQUAL,  1, list_seats       },
-        };
+        if (i->name)
+                printf("%s (%u)\n", i->name, (unsigned) i->uid);
+        else
+                printf("%u\n", (unsigned) i->uid);
 
-        int left;
-        unsigned i;
+        s1 = format_timestamp_pretty(since1, sizeof(since1), i->timestamp);
+        s2 = format_timestamp(since2, sizeof(since2), i->timestamp);
 
-        assert(argc >= 0);
-        assert(argv);
-        assert(error);
+        if (s1)
+                printf("\t   Since: %s; %s\n", s2, s1);
+        else if (s2)
+                printf("\t   Since: %s\n", s2);
 
-        left = argc - optind;
+        if (!isempty(i->state))
+                printf("\t   State: %s\n", i->state);
 
-        if (left <= 0)
-                /* Special rule: no arguments means "list-sessions" */
-                i = 0;
-        else {
-                if (streq(argv[optind], "help")) {
-                        help();
-                        return 0;
+        if (!strv_isempty(i->sessions)) {
+                char **l;
+                printf("\tSessions:");
+
+                STRV_FOREACH(l, i->sessions) {
+                        if (streq_ptr(*l, i->display))
+                                printf(" *%s", *l);
+                        else
+                                printf(" %s", *l);
                 }
 
-                for (i = 0; i < ELEMENTSOF(verbs); i++)
-                        if (streq(argv[optind], verbs[i].verb))
-                                break;
+                printf("\n");
+        }
 
-                if (i >= ELEMENTSOF(verbs)) {
-                        log_error("Unknown operation %s", argv[optind]);
-                        return -EINVAL;
+        if (i->control_group) {
+                unsigned c;
+
+                printf("\t  CGroup: %s\n", i->control_group);
+
+                if (arg_transport != TRANSPORT_SSH) {
+                        c = columns();
+                        if (c > 18)
+                                c -= 18;
+                        else
+                                c = 0;
+
+                        show_cgroup_by_path(i->control_group, "\t\t  ", c);
                 }
         }
+}
 
-        switch (verbs[i].argc_cmp) {
+static void print_seat_status_info(SeatStatusInfo *i) {
+        assert(i);
 
-        case EQUAL:
-                if (left != verbs[i].argc) {
-                        log_error("Invalid number of arguments.");
-                        return -EINVAL;
+        printf("%s\n", strna(i->id));
+
+        if (!strv_isempty(i->sessions)) {
+                char **l;
+                printf("\tSessions:");
+
+                STRV_FOREACH(l, i->sessions) {
+                        if (streq_ptr(*l, i->active_session))
+                                printf(" *%s", *l);
+                        else
+                                printf(" %s", *l);
                 }
 
+                printf("\n");
+        }
+
+        if (arg_transport != TRANSPORT_SSH) {
+                unsigned c;
+
+                c = columns();
+                if (c > 21)
+                        c -= 21;
+                else
+                        c = 0;
+
+                printf("\t Devices:\n");
+
+                show_sysfs(i->id, "\t\t  ", c);
+        }
+}
+
+static int status_property_session(const char *name, DBusMessageIter *iter, SessionStatusInfo *i) {
+        assert(name);
+        assert(iter);
+        assert(i);
+
+        switch (dbus_message_iter_get_arg_type(iter)) {
+
+        case DBUS_TYPE_STRING: {
+                const char *s;
+
+                dbus_message_iter_get_basic(iter, &s);
+
+                if (!isempty(s)) {
+                        if (streq(name, "Id"))
+                                i->id = s;
+                        else if (streq(name, "Name"))
+                                i->name = s;
+                        else if (streq(name, "ControlGroupPath"))
+                                i->control_group = s;
+                        else if (streq(name, "TTY"))
+                                i->tty = s;
+                        else if (streq(name, "Display"))
+                                i->display = s;
+                        else if (streq(name, "RemoteHost"))
+                                i->remote_host = s;
+                        else if (streq(name, "RemoteUser"))
+                                i->remote_user = s;
+                        else if (streq(name, "Service"))
+                                i->service = s;
+                        else if (streq(name, "Type"))
+                                i->type = s;
+                }
                 break;
+        }
 
-        case MORE:
-                if (left < verbs[i].argc) {
-                        log_error("Too few arguments.");
-                        return -EINVAL;
+        case DBUS_TYPE_UINT32: {
+                uint32_t u;
+
+                dbus_message_iter_get_basic(iter, &u);
+
+                if (streq(name, "VTNr"))
+                        i->vtnr = (int) u;
+                else if (streq(name, "Leader"))
+                        i->leader = (pid_t) u;
+
+                break;
+        }
+
+        case DBUS_TYPE_BOOLEAN: {
+                dbus_bool_t b;
+
+                dbus_message_iter_get_basic(iter, &b);
+
+                if (streq(name, "Remote"))
+                        i->remote = b;
+                else if (streq(name, "Active"))
+                        i->active = b;
+
+                break;
+        }
+
+        case DBUS_TYPE_UINT64: {
+                uint64_t u;
+
+                dbus_message_iter_get_basic(iter, &u);
+
+                if (streq(name, "Timestamp"))
+                        i->timestamp = (usec_t) u;
+
+                break;
+        }
+
+        case DBUS_TYPE_STRUCT: {
+                DBusMessageIter sub;
+
+                dbus_message_iter_recurse(iter, &sub);
+
+                if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "User")) {
+                        uint32_t u;
+
+                        dbus_message_iter_get_basic(&sub, &u);
+                        i->uid = (uid_t) u;
+
+                } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Seat")) {
+                        const char *s;
+
+                        dbus_message_iter_get_basic(&sub, &s);
+
+                        if (!isempty(s))
+                                i->seat = s;
                 }
 
                 break;
+        }
+        }
 
-        case LESS:
-                if (left > verbs[i].argc) {
-                        log_error("Too many arguments.");
-                        return -EINVAL;
+        return 0;
+}
+
+static int status_property_user(const char *name, DBusMessageIter *iter, UserStatusInfo *i) {
+        assert(name);
+        assert(iter);
+        assert(i);
+
+        switch (dbus_message_iter_get_arg_type(iter)) {
+
+        case DBUS_TYPE_STRING: {
+                const char *s;
+
+                dbus_message_iter_get_basic(iter, &s);
+
+                if (!isempty(s)) {
+                        if (streq(name, "Name"))
+                                i->name = s;
+                        else if (streq(name, "ControlGroupPath"))
+                                i->control_group = s;
+                        else if (streq(name, "State"))
+                                i->state = s;
                 }
+                break;
+        }
+
+        case DBUS_TYPE_UINT32: {
+                uint32_t u;
+
+                dbus_message_iter_get_basic(iter, &u);
+
+                if (streq(name, "UID"))
+                        i->uid = (uid_t) u;
 
                 break;
+        }
 
-        default:
-                assert_not_reached("Unknown comparison operator.");
+        case DBUS_TYPE_UINT64: {
+                uint64_t u;
+
+                dbus_message_iter_get_basic(iter, &u);
+
+                if (streq(name, "Timestamp"))
+                        i->timestamp = (usec_t) u;
+
+                break;
         }
 
-        if (!bus) {
-                log_error("Failed to get D-Bus connection: %s", error->message);
-                return -EIO;
+        case DBUS_TYPE_STRUCT: {
+                DBusMessageIter sub;
+
+                dbus_message_iter_recurse(iter, &sub);
+
+                if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Display")) {
+                        const char *s;
+
+                        dbus_message_iter_get_basic(&sub, &s);
+
+                        if (!isempty(s))
+                                i->display = s;
+                }
+
+                break;
         }
 
-        return verbs[i].dispatch(bus, argv + optind, left);
+        case DBUS_TYPE_ARRAY: {
+
+                if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Sessions")) {
+                        DBusMessageIter sub, sub2;
+
+                        dbus_message_iter_recurse(iter, &sub);
+                        while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
+                                const char *id;
+                                const char *path;
+
+                                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_OBJECT_PATH, &path, false) >= 0) {
+                                        char **l;
+
+                                        l = strv_append(i->sessions, id);
+                                        if (!l)
+                                                return -ENOMEM;
+
+                                        strv_free(i->sessions);
+                                        i->sessions = l;
+                                }
+
+                                dbus_message_iter_next(&sub);
+                        }
+
+                        return 0;
+                }
+        }
+        }
+
+        return 0;
 }
 
-int main(int argc, char*argv[]) {
-        int r, retval = EXIT_FAILURE;
-        DBusConnection *bus = NULL;
-        DBusError error;
+static int status_property_seat(const char *name, DBusMessageIter *iter, SeatStatusInfo *i) {
+        assert(name);
+        assert(iter);
+        assert(i);
 
-        dbus_error_init(&error);
+        switch (dbus_message_iter_get_arg_type(iter)) {
 
-        log_parse_environment();
-        log_open();
+        case DBUS_TYPE_STRING: {
+                const char *s;
 
-        r = parse_argv(argc, argv);
-        if (r < 0)
-                goto finish;
-        else if (r == 0) {
-                retval = EXIT_SUCCESS;
-                goto finish;
+                dbus_message_iter_get_basic(iter, &s);
+
+                if (!isempty(s)) {
+                        if (streq(name, "Id"))
+                                i->id = s;
+                }
+                break;
         }
 
-        if (arg_transport == TRANSPORT_NORMAL)
-                bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
-        else if (arg_transport == TRANSPORT_POLKIT)
-                bus_connect_system_polkit(&bus, &error);
-        else if (arg_transport == TRANSPORT_SSH)
-                bus_connect_system_ssh(NULL, arg_host, &bus, &error);
-        else
-                assert_not_reached("Uh, invalid transport...");
+        case DBUS_TYPE_STRUCT: {
+                DBusMessageIter sub;
 
-        r = loginctl_main(bus, argc, argv, &error);
-        retval = r < 0 ? EXIT_FAILURE : r;
+                dbus_message_iter_recurse(iter, &sub);
 
-finish:
-        if (bus) {
-                dbus_connection_flush(bus);
-                dbus_connection_close(bus);
-                dbus_connection_unref(bus);
+                if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "ActiveSession")) {
+                        const char *s;
+
+                        dbus_message_iter_get_basic(&sub, &s);
+
+                        if (!isempty(s))
+                                i->active_session = s;
+                }
+
+                break;
         }
 
-        dbus_error_free(&error);
-        dbus_shutdown();
+        case DBUS_TYPE_ARRAY: {
+
+                if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Sessions")) {
+                        DBusMessageIter sub, sub2;
+
+                        dbus_message_iter_recurse(iter, &sub);
+                        while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
+                                const char *id;
+                                const char *path;
+
+                                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_OBJECT_PATH, &path, false) >= 0) {
+                                        char **l;
+
+                                        l = strv_append(i->sessions, id);
+                                        if (!l)
+                                                return -ENOMEM;
+
+                                        strv_free(i->sessions);
+                                        i->sessions = l;
+                                }
+
+                                dbus_message_iter_next(&sub);
+                        }
+
+                        return 0;
+                }
+        }
+        }
+
+        return 0;
+}
+
+static int print_property(const char *name, DBusMessageIter *iter) {
+        assert(name);
+        assert(iter);
+
+        if (arg_property && !strv_find(arg_property, name))
+                return 0;
+
+        switch (dbus_message_iter_get_arg_type(iter)) {
+
+        case DBUS_TYPE_STRUCT: {
+                DBusMessageIter sub;
+
+                dbus_message_iter_recurse(iter, &sub);
+
+                if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING &&
+                    (streq(name, "Display") || streq(name, "ActiveSession"))) {
+                        const char *s;
+
+                        dbus_message_iter_get_basic(&sub, &s);
+
+                        if (arg_all || !isempty(s))
+                                printf("%s=%s\n", name, s);
+                        return 0;
+                }
+                break;
+        }
+
+        case DBUS_TYPE_ARRAY:
+
+                if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Sessions")) {
+                        DBusMessageIter sub, sub2;
+                        bool found = false;
+
+                        dbus_message_iter_recurse(iter, &sub);
+                        while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
+                                const char *id;
+                                const char *path;
+
+                                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_OBJECT_PATH, &path, false) >= 0) {
+                                        if (found)
+                                                printf(" %s", id);
+                                        else {
+                                                printf("%s=%s", name, id);
+                                                found = true;
+                                        }
+                                }
+
+                                dbus_message_iter_next(&sub);
+                        }
+
+                        if (!found && arg_all)
+                                printf("%s=\n", name);
+                        else if (found)
+                                printf("\n");
+
+                        return 0;
+                }
+
+                break;
+        }
+
+        if (generic_print_property(name, iter, arg_all) > 0)
+                return 0;
+
+        if (arg_all)
+                printf("%s=[unprintable]\n", name);
+
+        return 0;
+}
+
+static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
+        DBusMessage *m = NULL, *reply = NULL;
+        const char *interface = "";
+        int r;
+        DBusError error;
+        DBusMessageIter iter, sub, sub2, sub3;
+        SessionStatusInfo session_info;
+        UserStatusInfo user_info;
+        SeatStatusInfo seat_info;
+
+        assert(bus);
+        assert(path);
+        assert(new_line);
+
+        zero(session_info);
+        zero(user_info);
+        zero(seat_info);
+
+        dbus_error_init(&error);
+
+        m = dbus_message_new_method_call(
+                        "org.freedesktop.login1",
+                        path,
+                        "org.freedesktop.DBus.Properties",
+                        "GetAll");
+        if (!m) {
+                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;
+        }
+
+        reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+        if (!reply) {
+                log_error("Failed to issue method call: %s", bus_error_message(&error));
+                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);
+
+        if (*new_line)
+                printf("\n");
+
+        *new_line = true;
+
+        while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+                const char *name;
+
+                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, &name, 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 (show_properties)
+                        r = print_property(name, &sub3);
+                else if (strstr(verb, "session"))
+                        r = status_property_session(name, &sub3, &session_info);
+                else if (strstr(verb, "user"))
+                        r = status_property_user(name, &sub3, &user_info);
+                else
+                        r = status_property_seat(name, &sub3, &seat_info);
+
+                if (r < 0) {
+                        log_error("Failed to parse reply.");
+                        r = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_iter_next(&sub);
+        }
+
+        if (!show_properties) {
+                if (strstr(verb, "session"))
+                        print_session_status_info(&session_info);
+                else if (strstr(verb, "user"))
+                        print_user_status_info(&user_info);
+                else
+                        print_seat_status_info(&seat_info);
+        }
+
+        strv_free(seat_info.sessions);
+        strv_free(user_info.sessions);
+
+        r = 0;
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        if (reply)
+                dbus_message_unref(reply);
+
+        dbus_error_free(&error);
+
+        return r;
+}
+
+static int show(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL, *reply = NULL;
+        int r, ret = 0;
+        DBusError error;
+        unsigned i;
+        bool show_properties, new_line = false;
+
+        assert(bus);
+        assert(args);
+
+        dbus_error_init(&error);
+
+        show_properties = !strstr(args[0], "status");
+
+        if (show_properties)
+                pager_open_if_enabled();
+
+        if (show_properties && n <= 1) {
+                /* If not argument is specified inspect the manager
+                 * itself */
+
+                ret = show_one(args[0], bus, "/org/freedesktop/login1", show_properties, &new_line);
+                goto finish;
+        }
+
+        for (i = 1; i < n; i++) {
+                const char *path = NULL;
+
+                if (strstr(args[0], "session")) {
+
+                        m = dbus_message_new_method_call(
+                                        "org.freedesktop.login1",
+                                        "/org/freedesktop/login1",
+                                        "org.freedesktop.login1.Manager",
+                                        "GetSession");
+                        if (!m) {
+                                log_error("Could not allocate message.");
+                                ret = -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.");
+                                ret = -ENOMEM;
+                                goto finish;
+                        }
+
+                } else if (strstr(args[0], "user")) {
+                        uid_t uid;
+                        uint32_t u;
+
+                        ret = get_user_creds((const char**) (args+i), &uid, NULL, NULL);
+                        if (ret < 0) {
+                                log_error("User %s unknown.", args[i]);
+                                goto finish;
+                        }
+
+                        m = dbus_message_new_method_call(
+                                        "org.freedesktop.login1",
+                                        "/org/freedesktop/login1",
+                                        "org.freedesktop.login1.Manager",
+                                        "GetUser");
+                        if (!m) {
+                                log_error("Could not allocate message.");
+                                ret = -ENOMEM;
+                                goto finish;
+                        }
+
+                        u = (uint32_t) uid;
+                        if (!dbus_message_append_args(m,
+                                                      DBUS_TYPE_UINT32, &u,
+                                                      DBUS_TYPE_INVALID)) {
+                                log_error("Could not append arguments to message.");
+                                ret = -ENOMEM;
+                                goto finish;
+                        }
+                } else {
+
+                        m = dbus_message_new_method_call(
+                                        "org.freedesktop.login1",
+                                        "/org/freedesktop/login1",
+                                        "org.freedesktop.login1.Manager",
+                                        "GetSeat");
+                        if (!m) {
+                                log_error("Could not allocate message.");
+                                ret = -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.");
+                                ret = -ENOMEM;
+                                goto finish;
+                        }
+                }
+
+                reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+                if (!reply) {
+                        log_error("Failed to issue method call: %s", bus_error_message(&error));
+                        ret = -EIO;
+                        goto finish;
+                }
+
+                if (!dbus_message_get_args(reply, &error,
+                                           DBUS_TYPE_OBJECT_PATH, &path,
+                                           DBUS_TYPE_INVALID)) {
+                        log_error("Failed to parse reply: %s", bus_error_message(&error));
+                        ret = -EIO;
+                        goto finish;
+                }
+
+                r = show_one(args[0], bus, path, show_properties, &new_line);
+                if (r != 0)
+                        ret = r;
+
+                dbus_message_unref(m);
+                dbus_message_unref(reply);
+                m = reply = NULL;
+        }
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        if (reply)
+                dbus_message_unref(reply);
+
+        dbus_error_free(&error);
+
+        return ret;
+}
+
+static int activate(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL;
+        int ret = 0;
+        DBusError error;
+        unsigned i;
+
+        assert(bus);
+        assert(args);
+
+        dbus_error_init(&error);
+
+        for (i = 1; i < n; i++) {
+                DBusMessage *reply;
+
+                m = dbus_message_new_method_call(
+                                "org.freedesktop.login1",
+                                "/org/freedesktop/login1",
+                                "org.freedesktop.login1.Manager",
+                                streq(args[0], "lock-session")      ? "LockSession" :
+                                streq(args[0], "unlock-session")    ? "UnlockSession" :
+                                streq(args[0], "terminate-session") ? "TerminateSession" :
+                                                                      "ActivateSession");
+                if (!m) {
+                        log_error("Could not allocate message.");
+                        ret = -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.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+                if (!reply) {
+                        log_error("Failed to issue method call: %s", bus_error_message(&error));
+                        ret = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_unref(m);
+                dbus_message_unref(reply);
+                m = reply = NULL;
+        }
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        dbus_error_free(&error);
+
+        return ret;
+}
+
+static int kill_session(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL;
+        int ret = 0;
+        DBusError error;
+        unsigned i;
+
+        assert(bus);
+        assert(args);
+
+        dbus_error_init(&error);
+
+        if (!arg_kill_who)
+                arg_kill_who = "all";
+
+        for (i = 1; i < n; i++) {
+                DBusMessage *reply;
+
+                m = dbus_message_new_method_call(
+                                "org.freedesktop.login1",
+                                "/org/freedesktop/login1",
+                                "org.freedesktop.login1.Manager",
+                                "KillSession");
+                if (!m) {
+                        log_error("Could not allocate message.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                if (!dbus_message_append_args(m,
+                                              DBUS_TYPE_STRING, &args[i],
+                                              DBUS_TYPE_STRING, &arg_kill_who,
+                                              DBUS_TYPE_INT32, arg_signal,
+                                              DBUS_TYPE_INVALID)) {
+                        log_error("Could not append arguments to message.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+                if (!reply) {
+                        log_error("Failed to issue method call: %s", bus_error_message(&error));
+                        ret = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_unref(m);
+                dbus_message_unref(reply);
+                m = reply = NULL;
+        }
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        dbus_error_free(&error);
+
+        return ret;
+}
+
+static int enable_linger(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL;
+        int ret = 0;
+        DBusError error;
+        unsigned i;
+        dbus_bool_t b, interactive = true;
+
+        assert(bus);
+        assert(args);
+
+        dbus_error_init(&error);
+
+        b = streq(args[0], "enable-linger");
+
+        for (i = 1; i < n; i++) {
+                DBusMessage *reply;
+                uint32_t u;
+                uid_t uid;
+
+                m = dbus_message_new_method_call(
+                                "org.freedesktop.login1",
+                                "/org/freedesktop/login1",
+                                "org.freedesktop.login1.Manager",
+                                "SetUserLinger");
+                if (!m) {
+                        log_error("Could not allocate message.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                ret = get_user_creds((const char**) (args+i), &uid, NULL, NULL);
+                if (ret < 0) {
+                        log_error("Failed to resolve user %s: %s", args[i], strerror(-ret));
+                        goto finish;
+                }
+
+                u = (uint32_t) uid;
+                if (!dbus_message_append_args(m,
+                                              DBUS_TYPE_UINT32, &u,
+                                              DBUS_TYPE_BOOLEAN, &b,
+                                              DBUS_TYPE_BOOLEAN, &interactive,
+                                              DBUS_TYPE_INVALID)) {
+                        log_error("Could not append arguments to message.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+                if (!reply) {
+                        log_error("Failed to issue method call: %s", bus_error_message(&error));
+                        ret = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_unref(m);
+                dbus_message_unref(reply);
+                m = reply = NULL;
+        }
+
+        ret = 0;
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        dbus_error_free(&error);
+
+        return ret;
+}
+
+static int terminate_user(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL;
+        int ret = 0;
+        DBusError error;
+        unsigned i;
+
+        assert(bus);
+        assert(args);
+
+        dbus_error_init(&error);
+
+        for (i = 1; i < n; i++) {
+                uint32_t u;
+                uid_t uid;
+                DBusMessage *reply;
+
+                m = dbus_message_new_method_call(
+                                "org.freedesktop.login1",
+                                "/org/freedesktop/login1",
+                                "org.freedesktop.login1.Manager",
+                                "TerminateUser");
+                if (!m) {
+                        log_error("Could not allocate message.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                ret = get_user_creds((const char**) (args+i), &uid, NULL, NULL);
+                if (ret < 0) {
+                        log_error("Failed to look up user %s: %s", args[i], strerror(-ret));
+                        goto finish;
+                }
+
+                u = (uint32_t) uid;
+                if (!dbus_message_append_args(m,
+                                              DBUS_TYPE_UINT32, &u,
+                                              DBUS_TYPE_INVALID)) {
+                        log_error("Could not append arguments to message.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+                if (!reply) {
+                        log_error("Failed to issue method call: %s", bus_error_message(&error));
+                        ret = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_unref(m);
+                dbus_message_unref(reply);
+                m = reply = NULL;
+        }
+
+        ret = 0;
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        dbus_error_free(&error);
+
+        return ret;
+}
+
+static int kill_user(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL;
+        int ret = 0;
+        DBusError error;
+        unsigned i;
+
+        assert(bus);
+        assert(args);
+
+        dbus_error_init(&error);
+
+        if (!arg_kill_who)
+                arg_kill_who = "all";
+
+        for (i = 1; i < n; i++) {
+                DBusMessage *reply;
+                uid_t uid;
+                uint32_t u;
+
+                m = dbus_message_new_method_call(
+                                "org.freedesktop.login1",
+                                "/org/freedesktop/login1",
+                                "org.freedesktop.login1.Manager",
+                                "KillUser");
+                if (!m) {
+                        log_error("Could not allocate message.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                ret = get_user_creds((const char**) (args+i), &uid, NULL, NULL);
+                if (ret < 0) {
+                        log_error("Failed to look up user %s: %s", args[i], strerror(-ret));
+                        goto finish;
+                }
+
+                u = (uint32_t) uid;
+                if (!dbus_message_append_args(m,
+                                              DBUS_TYPE_UINT32, &u,
+                                              DBUS_TYPE_INT32, arg_signal,
+                                              DBUS_TYPE_INVALID)) {
+                        log_error("Could not append arguments to message.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+                if (!reply) {
+                        log_error("Failed to issue method call: %s", bus_error_message(&error));
+                        ret = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_unref(m);
+                dbus_message_unref(reply);
+                m = reply = NULL;
+        }
+
+        ret = 0;
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        dbus_error_free(&error);
+
+        return ret;
+}
+
+static int attach(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL;
+        int ret = 0;
+        DBusError error;
+        unsigned i;
+        dbus_bool_t interactive = true;
+
+        assert(bus);
+        assert(args);
+
+        dbus_error_init(&error);
+
+        for (i = 2; i < n; i++) {
+                DBusMessage *reply;
+
+                m = dbus_message_new_method_call(
+                                "org.freedesktop.login1",
+                                "/org/freedesktop/login1",
+                                "org.freedesktop.login1.Manager",
+                                "AttachDevice");
+                if (!m) {
+                        log_error("Could not allocate message.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                if (!dbus_message_append_args(m,
+                                              DBUS_TYPE_STRING, &args[1],
+                                              DBUS_TYPE_STRING, &args[i],
+                                              DBUS_TYPE_BOOLEAN, &interactive,
+                                              DBUS_TYPE_INVALID)) {
+                        log_error("Could not append arguments to message.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+                if (!reply) {
+                        log_error("Failed to issue method call: %s", bus_error_message(&error));
+                        ret = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_unref(m);
+                dbus_message_unref(reply);
+                m = reply = NULL;
+        }
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        dbus_error_free(&error);
+
+        return ret;
+}
+
+static int flush_devices(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL, *reply = NULL;
+        int ret = 0;
+        DBusError error;
+        dbus_bool_t interactive = true;
+
+        assert(bus);
+        assert(args);
+
+        dbus_error_init(&error);
+
+        m = dbus_message_new_method_call(
+                        "org.freedesktop.login1",
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        "FlushDevices");
+        if (!m) {
+                log_error("Could not allocate message.");
+                ret = -ENOMEM;
+                goto finish;
+        }
+
+        if (!dbus_message_append_args(m,
+                                      DBUS_TYPE_BOOLEAN, &interactive,
+                                      DBUS_TYPE_INVALID)) {
+                log_error("Could not append arguments to message.");
+                ret = -ENOMEM;
+                goto finish;
+        }
+
+        reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+        if (!reply) {
+                log_error("Failed to issue method call: %s", bus_error_message(&error));
+                ret = -EIO;
+                goto finish;
+        }
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        if (reply)
+                dbus_message_unref(reply);
+
+        dbus_error_free(&error);
+
+        return ret;
+}
+
+static int terminate_seat(DBusConnection *bus, char **args, unsigned n) {
+        DBusMessage *m = NULL;
+        int ret = 0;
+        DBusError error;
+        unsigned i;
+
+        assert(bus);
+        assert(args);
+
+        dbus_error_init(&error);
+
+        for (i = 1; i < n; i++) {
+                DBusMessage *reply;
+
+                m = dbus_message_new_method_call(
+                                "org.freedesktop.login1",
+                                "/org/freedesktop/login1",
+                                "org.freedesktop.login1.Manager",
+                                "TerminateSeat");
+                if (!m) {
+                        log_error("Could not allocate message.");
+                        ret = -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.");
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+
+                reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+                if (!reply) {
+                        log_error("Failed to issue method call: %s", bus_error_message(&error));
+                        ret = -EIO;
+                        goto finish;
+                }
+
+                dbus_message_unref(m);
+                dbus_message_unref(reply);
+                m = reply = NULL;
+        }
+
+finish:
+        if (m)
+                dbus_message_unref(m);
+
+        dbus_error_free(&error);
+
+        return ret;
+}
+
+static int help(void) {
+
+        printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+               "Send control commands to or query the login manager.\n\n"
+               "  -h --help           Show this help\n"
+               "     --version        Show package version\n"
+               "  -p --property=NAME  Show only properties by this name\n"
+               "  -a --all            Show all properties, including empty ones\n"
+               "     --kill-who=WHO   Who to send signal to\n"
+               "  -s --signal=SIGNAL  Which signal to send\n"
+               "  -H --host=[USER@]HOST\n"
+               "                      Show information for remote host\n"
+               "  -P --privileged     Acquire privileges before execution\n"
+               "     --no-pager       Do not pipe output into a pager\n\n"
+               "Commands:\n"
+               "  list-sessions                   List sessions\n"
+               "  session-status [ID...]          Show session status\n"
+               "  show-session [ID...]            Show properties of one or more sessions\n"
+               "  activate [ID]                   Activate a session\n"
+               "  lock-session [ID...]            Screen lock one or more sessions\n"
+               "  unlock-session [ID...]          Screen unlock one or more sessions\n"
+               "  terminate-session [ID...]       Terminate one or more sessions\n"
+               "  kill-session [ID...]            Send signal to processes of a session\n"
+               "  list-users                      List users\n"
+               "  user-status [USER...]           Show user status\n"
+               "  show-user [USER...]             Show properties of one or more users\n"
+               "  enable-linger [USER...]         Enable linger state of one or more users\n"
+               "  disable-linger [USER...]        Disable linger state of one or more users\n"
+               "  terminate-user [USER...]        Terminate all sessions of one or more users\n"
+               "  kill-user [USER...]             Send signal to processes of a user\n"
+               "  list-seats                      List seats\n"
+               "  seat-status [NAME...]           Show seat status\n"
+               "  show-seat [NAME...]             Show properties of one or more seats\n"
+               "  attach [NAME] [DEVICE...]       Attach one or more devices to a seat\n"
+               "  flush-devices                   Flush all device associations\n"
+               "  terminate-seat [NAME...]        Terminate all sessions on one or more seats\n",
+               program_invocation_short_name);
+
+        return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+        enum {
+                ARG_VERSION = 0x100,
+                ARG_NO_PAGER,
+                ARG_KILL_WHO
+        };
+
+        static const struct option options[] = {
+                { "help",      no_argument,       NULL, 'h'           },
+                { "version",   no_argument,       NULL, ARG_VERSION   },
+                { "property",  required_argument, NULL, 'p'           },
+                { "all",       no_argument,       NULL, 'a'           },
+                { "no-pager",  no_argument,       NULL, ARG_NO_PAGER  },
+                { "kill-who",  required_argument, NULL, ARG_KILL_WHO  },
+                { "signal",    required_argument, NULL, 's'           },
+                { "host",      required_argument, NULL, 'H'           },
+                { "privileged",no_argument,       NULL, 'P'           },
+                { NULL,        0,                 NULL, 0             }
+        };
+
+        int c;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        while ((c = getopt_long(argc, argv, "hp:as:H:P", options, NULL)) >= 0) {
+
+                switch (c) {
+
+                case 'h':
+                        help();
+                        return 0;
+
+                case ARG_VERSION:
+                        puts(PACKAGE_STRING);
+                        puts(DISTRIBUTION);
+                        puts(SYSTEMD_FEATURES);
+                        return 0;
+
+                case 'p': {
+                        char **l;
+
+                        l = strv_append(arg_property, optarg);
+                        if (!l)
+                                return -ENOMEM;
+
+                        strv_free(arg_property);
+                        arg_property = l;
+
+                        /* If the user asked for a particular
+                         * property, show it to him, even if it is
+                         * empty. */
+                        arg_all = true;
+                        break;
+                }
+
+                case 'a':
+                        arg_all = true;
+                        break;
+
+                case ARG_NO_PAGER:
+                        arg_no_pager = true;
+                        break;
+
+                case ARG_KILL_WHO:
+                        arg_kill_who = optarg;
+                        break;
+
+                case 's':
+                        arg_signal = signal_from_string_try_harder(optarg);
+                        if (arg_signal < 0) {
+                                log_error("Failed to parse signal string %s.", optarg);
+                                return -EINVAL;
+                        }
+                        break;
+
+                case 'P':
+                        arg_transport = TRANSPORT_POLKIT;
+                        break;
+
+                case 'H':
+                        arg_transport = TRANSPORT_SSH;
+                        arg_host = optarg;
+                        break;
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        log_error("Unknown option code %c", c);
+                        return -EINVAL;
+                }
+        }
+
+        return 1;
+}
+
+static int loginctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
+
+        static const struct {
+                const char* verb;
+                const enum {
+                        MORE,
+                        LESS,
+                        EQUAL
+                } argc_cmp;
+                const int argc;
+                int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
+        } verbs[] = {
+                { "list-sessions",         LESS,   1, list_sessions    },
+                { "session-status",        MORE,   2, show             },
+                { "show-session",          MORE,   1, show             },
+                { "activate",              EQUAL,  2, activate         },
+                { "lock-session",          MORE,   2, activate         },
+                { "unlock-session",        MORE,   2, activate         },
+                { "terminate-session",     MORE,   2, activate         },
+                { "kill-session",          MORE,   2, kill_session     },
+                { "list-users",            EQUAL,  1, list_users       },
+                { "user-status",           MORE,   2, show             },
+                { "show-user",             MORE,   1, show             },
+                { "enable-linger",         MORE,   2, enable_linger    },
+                { "disable-linger",        MORE,   2, enable_linger    },
+                { "terminate-user",        MORE,   2, terminate_user   },
+                { "kill-user",             MORE,   2, kill_user        },
+                { "list-seats",            EQUAL,  1, list_seats       },
+                { "seat-status",           MORE,   2, show             },
+                { "show-seat",             MORE,   1, show             },
+                { "attach",                MORE,   3, attach           },
+                { "flush-devices",         EQUAL,  1, flush_devices    },
+                { "terminate-seat",        MORE,   2, terminate_seat   },
+        };
+
+        int left;
+        unsigned i;
+
+        assert(argc >= 0);
+        assert(argv);
+        assert(error);
+
+        left = argc - optind;
+
+        if (left <= 0)
+                /* Special rule: no arguments means "list-sessions" */
+                i = 0;
+        else {
+                if (streq(argv[optind], "help")) {
+                        help();
+                        return 0;
+                }
+
+                for (i = 0; i < ELEMENTSOF(verbs); i++)
+                        if (streq(argv[optind], verbs[i].verb))
+                                break;
+
+                if (i >= ELEMENTSOF(verbs)) {
+                        log_error("Unknown operation %s", argv[optind]);
+                        return -EINVAL;
+                }
+        }
+
+        switch (verbs[i].argc_cmp) {
+
+        case EQUAL:
+                if (left != verbs[i].argc) {
+                        log_error("Invalid number of arguments.");
+                        return -EINVAL;
+                }
+
+                break;
+
+        case MORE:
+                if (left < verbs[i].argc) {
+                        log_error("Too few arguments.");
+                        return -EINVAL;
+                }
+
+                break;
+
+        case LESS:
+                if (left > verbs[i].argc) {
+                        log_error("Too many arguments.");
+                        return -EINVAL;
+                }
+
+                break;
+
+        default:
+                assert_not_reached("Unknown comparison operator.");
+        }
+
+        if (!bus) {
+                log_error("Failed to get D-Bus connection: %s", error->message);
+                return -EIO;
+        }
+
+        return verbs[i].dispatch(bus, argv + optind, left);
+}
+
+int main(int argc, char*argv[]) {
+        int r, retval = EXIT_FAILURE;
+        DBusConnection *bus = NULL;
+        DBusError error;
+
+        dbus_error_init(&error);
+
+        log_parse_environment();
+        log_open();
+
+        r = parse_argv(argc, argv);
+        if (r < 0)
+                goto finish;
+        else if (r == 0) {
+                retval = EXIT_SUCCESS;
+                goto finish;
+        }
+
+        if (arg_transport == TRANSPORT_NORMAL)
+                bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
+        else if (arg_transport == TRANSPORT_POLKIT)
+                bus_connect_system_polkit(&bus, &error);
+        else if (arg_transport == TRANSPORT_SSH)
+                bus_connect_system_ssh(NULL, arg_host, &bus, &error);
+        else
+                assert_not_reached("Uh, invalid transport...");
+
+        r = loginctl_main(bus, argc, argv, &error);
+        retval = r < 0 ? EXIT_FAILURE : r;
+
+finish:
+        if (bus) {
+                dbus_connection_flush(bus);
+                dbus_connection_close(bus);
+                dbus_connection_unref(bus);
+        }
+
+        dbus_error_free(&error);
+        dbus_shutdown();
+
+        strv_free(arg_property);
 
         pager_close();