Fork of Original Code Base: anongit.freedesktop.org/systemd

This is the initial fork of the code base from freedsktop.org.
The code is provided here as a reference of the initial starting
point and for possible future checkouts after a large portion
of this code is removed.

Merge git://anongit.freedesktop.org/systemd/systemd

1 files changed, 887 insertions, 0 deletions

diff --git a/src/core/dbus-unit.c b/src/core/dbus-unit.c
new file mode 100644
index 0000000000..83ee018ff3
--- /dev/null
+++ b/src/core/dbus-unit.c
@@ -0,0 +1,887 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+
+#include "dbus.h"
+#include "log.h"
+#include "dbus-unit.h"
+#include "bus-errors.h"
+#include "dbus-common.h"
+#include "selinux-access.h"
+
+const char bus_unit_interface[] _introspect_("Unit") = BUS_UNIT_INTERFACE;
+
+#define INVALIDATING_PROPERTIES                 \
+        "LoadState\0"                           \
+        "ActiveState\0"                         \
+        "SubState\0"                            \
+        "InactiveExitTimestamp\0"               \
+        "ActiveEnterTimestamp\0"                \
+        "ActiveExitTimestamp\0"                 \
+        "InactiveEnterTimestamp\0"              \
+        "Job\0"                                 \
+        "NeedDaemonReload\0"
+
+static int bus_unit_append_names(DBusMessageIter *i, const char *property, void *data) {
+        char *t;
+        Iterator j;
+        DBusMessageIter sub;
+        Unit *u = data;
+
+        if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub))
+                return -ENOMEM;
+
+        SET_FOREACH(t, u->names, j)
+                if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &t))
+                        return -ENOMEM;
+
+        if (!dbus_message_iter_close_container(i, &sub))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_following(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data, *f;
+        const char *d;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        f = unit_following(u);
+        d = f ? f->id : "";
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_dependencies(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u;
+        Iterator j;
+        DBusMessageIter sub;
+        Set *s = data;
+
+        if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub))
+                return -ENOMEM;
+
+        SET_FOREACH(u, s, j)
+                if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &u->id))
+                        return -ENOMEM;
+
+        if (!dbus_message_iter_close_container(i, &sub))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_description(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        const char *d;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        d = unit_description(u);
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_unit_append_load_state, unit_load_state, UnitLoadState);
+
+static int bus_unit_append_active_state(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        const char *state;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        state = unit_active_state_to_string(unit_active_state(u));
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_sub_state(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        const char *state;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        state = unit_sub_state_to_string(u);
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_file_state(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        const char *state;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        state = strempty(unit_file_state_to_string(unit_get_unit_file_state(u)));
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_can_start(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        dbus_bool_t b;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        b = unit_can_start(u) &&
+                !u->refuse_manual_start;
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_can_stop(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        dbus_bool_t b;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        /* On the lower levels we assume that every unit we can start
+         * we can also stop */
+
+        b = unit_can_start(u) &&
+                !u->refuse_manual_stop;
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_can_reload(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        dbus_bool_t b;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        b = unit_can_reload(u);
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_can_isolate(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        dbus_bool_t b;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        b = unit_can_isolate(u) &&
+                !u->refuse_manual_start;
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_job(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        DBusMessageIter sub;
+        char *p;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
+                return -ENOMEM;
+
+        if (u->job) {
+
+                if (!(p = job_dbus_path(u->job)))
+                        return -ENOMEM;
+
+                if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &u->job->id) ||
+                    !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
+                        free(p);
+                        return -ENOMEM;
+                }
+        } else {
+                uint32_t id = 0;
+
+                /* No job, so let's fill in some placeholder
+                 * data. Since we need to fill in a valid path we
+                 * simple point to ourselves. */
+
+                if (!(p = unit_dbus_path(u)))
+                        return -ENOMEM;
+
+                if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &id) ||
+                    !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
+                        free(p);
+                        return -ENOMEM;
+                }
+        }
+
+        free(p);
+
+        if (!dbus_message_iter_close_container(i, &sub))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_default_cgroup(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        char *t;
+        CGroupBonding *cgb;
+        bool success;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        if ((cgb = unit_get_default_cgroup(u))) {
+                if (!(t = cgroup_bonding_to_string(cgb)))
+                        return -ENOMEM;
+        } else
+                t = (char*) "";
+
+        success = dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t);
+
+        if (cgb)
+                free(t);
+
+        return success ? 0 : -ENOMEM;
+}
+
+static int bus_unit_append_cgroups(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        CGroupBonding *cgb;
+        DBusMessageIter sub;
+
+        if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub))
+                return -ENOMEM;
+
+        LIST_FOREACH(by_unit, cgb, u->cgroup_bondings) {
+                char *t;
+                bool success;
+
+                if (!(t = cgroup_bonding_to_string(cgb)))
+                        return -ENOMEM;
+
+                success = dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &t);
+                free(t);
+
+                if (!success)
+                        return -ENOMEM;
+        }
+
+        if (!dbus_message_iter_close_container(i, &sub))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_cgroup_attrs(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        CGroupAttribute *a;
+        DBusMessageIter sub, sub2;
+
+        if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sss)", &sub))
+                return -ENOMEM;
+
+        LIST_FOREACH(by_unit, a, u->cgroup_attributes) {
+                char *v = NULL;
+                bool success;
+
+                if (a->map_callback)
+                        a->map_callback(a->controller, a->name, a->value, &v);
+
+                success =
+                        dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) &&
+                        dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &a->controller) &&
+                        dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &a->name) &&
+                        dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, v ? &v : &a->value) &&
+                        dbus_message_iter_close_container(&sub, &sub2);
+
+                free(v);
+
+                if (!success)
+                        return -ENOMEM;
+        }
+
+        if (!dbus_message_iter_close_container(i, &sub))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_need_daemon_reload(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        dbus_bool_t b;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        b = unit_need_daemon_reload(u);
+
+        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int bus_unit_append_load_error(DBusMessageIter *i, const char *property, void *data) {
+        Unit *u = data;
+        const char *name, *message;
+        DBusMessageIter sub;
+
+        assert(i);
+        assert(property);
+        assert(u);
+
+        if (u->load_error != 0) {
+                name = bus_errno_to_dbus(u->load_error);
+                message = strempty(strerror(-u->load_error));
+        } else
+                name = message = "";
+
+        if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub) ||
+            !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &name) ||
+            !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &message) ||
+            !dbus_message_iter_close_container(i, &sub))
+                return -ENOMEM;
+
+        return 0;
+}
+
+static DBusHandlerResult bus_unit_message_dispatch(Unit *u, DBusConnection *connection, DBusMessage *message) {
+        _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+        DBusError error;
+        JobType job_type = _JOB_TYPE_INVALID;
+        bool reload_if_possible = false;
+        int r;
+
+        dbus_error_init(&error);
+
+        if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Start"))
+                job_type = JOB_START;
+        else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Stop"))
+                job_type = JOB_STOP;
+        else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Reload"))
+                job_type = JOB_RELOAD;
+        else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Restart"))
+                job_type = JOB_RESTART;
+        else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "TryRestart"))
+                job_type = JOB_TRY_RESTART;
+        else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ReloadOrRestart")) {
+                reload_if_possible = true;
+                job_type = JOB_RESTART;
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ReloadOrTryRestart")) {
+                reload_if_possible = true;
+                job_type = JOB_TRY_RESTART;
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Kill")) {
+                const char *swho;
+                int32_t signo;
+                KillWho who;
+
+                if (!dbus_message_get_args(
+                                    message,
+                                    &error,
+                                    DBUS_TYPE_STRING, &swho,
+                                    DBUS_TYPE_INT32, &signo,
+                                    DBUS_TYPE_INVALID))
+                        return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+                if (isempty(swho))
+                        who = KILL_ALL;
+                else {
+                        who = kill_who_from_string(swho);
+                        if (who < 0)
+                                return bus_send_error_reply(connection, message, &error, -EINVAL);
+                }
+
+                if (signo <= 0 || signo >= _NSIG)
+                        return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+                SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "stop");
+
+                r = unit_kill(u, who, signo, &error);
+                if (r < 0)
+                        return bus_send_error_reply(connection, message, &error, r);
+
+                reply = dbus_message_new_method_return(message);
+                if (!reply)
+                        goto oom;
+
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ResetFailed")) {
+
+                SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "reload");
+
+                unit_reset_failed(u);
+
+                reply = dbus_message_new_method_return(message);
+                if (!reply)
+                        goto oom;
+
+        } else if (UNIT_VTABLE(u)->bus_message_handler)
+                return UNIT_VTABLE(u)->bus_message_handler(u, connection, message);
+        else
+                return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+
+        if (job_type != _JOB_TYPE_INVALID) {
+                const char *smode;
+                JobMode mode;
+
+                if (!dbus_message_get_args(
+                                    message,
+                                    &error,
+                                    DBUS_TYPE_STRING, &smode,
+                                    DBUS_TYPE_INVALID))
+                        return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+                mode = job_mode_from_string(smode);
+                if (mode < 0) {
+                        dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
+                        return bus_send_error_reply(connection, message, &error, -EINVAL);
+                }
+
+                return bus_unit_queue_job(connection, message, u, job_type, mode, reload_if_possible);
+        }
+
+        if (reply)
+                if (!dbus_connection_send(connection, reply, NULL))
+                        goto oom;
+
+        return DBUS_HANDLER_RESULT_HANDLED;
+
+oom:
+        dbus_error_free(&error);
+        return DBUS_HANDLER_RESULT_NEED_MEMORY;
+}
+
+static DBusHandlerResult bus_unit_message_handler(DBusConnection *connection, DBusMessage  *message, void *data) {
+        Manager *m = data;
+        Unit *u;
+        int r;
+        _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+        DBusError error;
+
+        assert(connection);
+        assert(message);
+        assert(m);
+
+        dbus_error_init(&error);
+
+        if (streq(dbus_message_get_path(message), "/org/freedesktop/systemd1/unit")) {
+                /* Be nice to gdbus and return introspection data for our mid-level paths */
+
+                SELINUX_ACCESS_CHECK(connection, message, "status");
+
+                if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
+                        char *introspection = NULL;
+                        FILE *f;
+                        Iterator i;
+                        const char *k;
+                        size_t size;
+
+                        reply = dbus_message_new_method_return(message);
+                        if (!reply)
+                                goto oom;
+
+                        /* We roll our own introspection code here, instead of
+                         * relying on bus_default_message_handler() because we
+                         * need to generate our introspection string
+                         * dynamically. */
+
+                        f = open_memstream(&introspection, &size);
+                        if (!f)
+                                goto oom;
+
+                        fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
+                              "<node>\n", f);
+
+                        fputs(BUS_INTROSPECTABLE_INTERFACE, f);
+                        fputs(BUS_PEER_INTERFACE, f);
+
+                        HASHMAP_FOREACH_KEY(u, k, m->units, i) {
+                                char *p;
+
+                                if (k != u->id)
+                                        continue;
+
+                                p = bus_path_escape(k);
+                                if (!p) {
+                                        fclose(f);
+                                        free(introspection);
+                                        goto oom;
+                                }
+
+                                fprintf(f, "<node name=\"%s\"/>", p);
+                                free(p);
+                        }
+
+                        fputs("</node>\n", f);
+
+                        if (ferror(f)) {
+                                fclose(f);
+                                free(introspection);
+                                goto oom;
+                        }
+
+                        fclose(f);
+
+                        if (!introspection)
+                                goto oom;
+
+                        if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
+                                free(introspection);
+                                goto oom;
+                        }
+
+                        free(introspection);
+
+                        if (!dbus_connection_send(connection, reply, NULL))
+                                goto oom;
+
+                        return DBUS_HANDLER_RESULT_HANDLED;
+                }
+
+                return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+        }
+
+        r = manager_load_unit_from_dbus_path(m, dbus_message_get_path(message), &error, &u);
+        if (r == -ENOMEM)
+                goto oom;
+        if (r < 0)
+                return bus_send_error_reply(connection, message, &error, r);
+
+        return bus_unit_message_dispatch(u, connection, message);
+
+oom:
+        dbus_error_free(&error);
+
+        return DBUS_HANDLER_RESULT_NEED_MEMORY;
+}
+
+const DBusObjectPathVTable bus_unit_vtable = {
+        .message_function = bus_unit_message_handler
+};
+
+void bus_unit_send_change_signal(Unit *u) {
+        char *p = NULL;
+        DBusMessage *m = NULL;
+
+        assert(u);
+
+        if (u->in_dbus_queue) {
+                LIST_REMOVE(Unit, dbus_queue, u->manager->dbus_unit_queue, u);
+                u->in_dbus_queue = false;
+        }
+
+        if (!u->id)
+                return;
+
+        if (!bus_has_subscriber(u->manager)) {
+                u->sent_dbus_new_signal = true;
+                return;
+        }
+
+        if (!(p = unit_dbus_path(u)))
+                goto oom;
+
+        if (u->sent_dbus_new_signal) {
+                /* Send a properties changed signal. First for the
+                 * specific type, then for the generic unit. The
+                 * clients may rely on this order to get atomic
+                 * behavior if needed. */
+
+                if (UNIT_VTABLE(u)->bus_invalidating_properties) {
+
+                        if (!(m = bus_properties_changed_new(p,
+                                                             UNIT_VTABLE(u)->bus_interface,
+                                                             UNIT_VTABLE(u)->bus_invalidating_properties)))
+                                goto oom;
+
+                        if (bus_broadcast(u->manager, m) < 0)
+                                goto oom;
+
+                        dbus_message_unref(m);
+                }
+
+                if (!(m = bus_properties_changed_new(p, "org.freedesktop.systemd1.Unit", INVALIDATING_PROPERTIES)))
+                        goto oom;
+
+        } else {
+                /* Send a new signal */
+
+                if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitNew")))
+                        goto oom;
+
+                if (!dbus_message_append_args(m,
+                                              DBUS_TYPE_STRING, &u->id,
+                                              DBUS_TYPE_OBJECT_PATH, &p,
+                                              DBUS_TYPE_INVALID))
+                        goto oom;
+        }
+
+        if (bus_broadcast(u->manager, m) < 0)
+                goto oom;
+
+        free(p);
+        dbus_message_unref(m);
+
+        u->sent_dbus_new_signal = true;
+
+        return;
+
+oom:
+        free(p);
+
+        if (m)
+                dbus_message_unref(m);
+
+        log_error("Failed to allocate unit change/new signal.");
+}
+
+void bus_unit_send_removed_signal(Unit *u) {
+        char *p = NULL;
+        DBusMessage *m = NULL;
+
+        assert(u);
+
+        if (!bus_has_subscriber(u->manager))
+                return;
+
+        if (!u->sent_dbus_new_signal)
+                bus_unit_send_change_signal(u);
+
+        if (!u->id)
+                return;
+
+        if (!(p = unit_dbus_path(u)))
+                goto oom;
+
+        if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitRemoved")))
+                goto oom;
+
+        if (!dbus_message_append_args(m,
+                                      DBUS_TYPE_STRING, &u->id,
+                                      DBUS_TYPE_OBJECT_PATH, &p,
+                                      DBUS_TYPE_INVALID))
+                goto oom;
+
+        if (bus_broadcast(u->manager, m) < 0)
+                goto oom;
+
+        free(p);
+        dbus_message_unref(m);
+
+        return;
+
+oom:
+        free(p);
+
+        if (m)
+                dbus_message_unref(m);
+
+        log_error("Failed to allocate unit remove signal.");
+}
+
+DBusHandlerResult bus_unit_queue_job(
+                DBusConnection *connection,
+                DBusMessage *message,
+                Unit *u,
+                JobType type,
+                JobMode mode,
+                bool reload_if_possible) {
+
+        _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+        _cleanup_free_ char *path = NULL;
+        Job *j;
+        JobBusClient *cl;
+        DBusError error;
+        int r;
+
+        assert(connection);
+        assert(message);
+        assert(u);
+        assert(type >= 0 && type < _JOB_TYPE_MAX);
+        assert(mode >= 0 && mode < _JOB_MODE_MAX);
+
+        dbus_error_init(&error);
+
+        if (reload_if_possible && unit_can_reload(u)) {
+                if (type == JOB_RESTART)
+                        type = JOB_RELOAD_OR_START;
+                else if (type == JOB_TRY_RESTART)
+                        type = JOB_RELOAD;
+        }
+
+        SELINUX_UNIT_ACCESS_CHECK(u, connection, message,
+                                  (type == JOB_START || type == JOB_RESTART || type == JOB_TRY_RESTART) ? "start" :
+                                  type == JOB_STOP ? "stop" : "reload");
+
+        if (type == JOB_STOP && u->load_state == UNIT_ERROR && unit_active_state(u) == UNIT_INACTIVE) {
+                dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
+                return bus_send_error_reply(connection, message, &error, -EPERM);
+        }
+
+        if ((type == JOB_START && u->refuse_manual_start) ||
+            (type == JOB_STOP && u->refuse_manual_stop) ||
+            ((type == JOB_RESTART || type == JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop))) {
+                dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, unit %s may be requested by dependency only.", u->id);
+                return bus_send_error_reply(connection, message, &error, -EPERM);
+        }
+
+        r = manager_add_job(u->manager, type, u, mode, true, &error, &j);
+        if (r < 0)
+                return bus_send_error_reply(connection, message, &error, r);
+
+        cl = job_bus_client_new(connection, bus_message_get_sender_with_fallback(message));
+        if (!cl)
+                goto oom;
+
+        LIST_PREPEND(JobBusClient, client, j->bus_client_list, cl);
+
+        reply = dbus_message_new_method_return(message);
+        if (!reply)
+                goto oom;
+
+        path = job_dbus_path(j);
+        if (!path)
+                goto oom;
+
+        if (!dbus_message_append_args(
+                            reply,
+                            DBUS_TYPE_OBJECT_PATH, &path,
+                            DBUS_TYPE_INVALID))
+                goto oom;
+
+        if (!dbus_connection_send(connection, reply, NULL))
+                goto oom;
+
+        return DBUS_HANDLER_RESULT_HANDLED;
+
+oom:
+        dbus_error_free(&error);
+
+        return DBUS_HANDLER_RESULT_NEED_MEMORY;
+}
+
+const BusProperty bus_unit_properties[] = {
+        { "Id",                   bus_property_append_string,         "s", offsetof(Unit, id),                                         true },
+        { "Names",                bus_unit_append_names,             "as", 0 },
+        { "Following",            bus_unit_append_following,          "s", 0 },
+        { "Requires",             bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_REQUIRES]),                true },
+        { "RequiresOverridable",  bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_REQUIRES_OVERRIDABLE]),    true },
+        { "Requisite",            bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_REQUISITE]),               true },
+        { "RequisiteOverridable", bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_REQUISITE_OVERRIDABLE]),   true },
+        { "Wants",                bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_WANTS]),                   true },
+        { "BindsTo",              bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_BINDS_TO]),                true },
+        { "PartOf",               bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_PART_OF]),                 true },
+        { "RequiredBy",           bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_REQUIRED_BY]),             true },
+        { "RequiredByOverridable",bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_REQUIRED_BY_OVERRIDABLE]), true },
+        { "WantedBy",             bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_WANTED_BY]),               true },
+        { "BoundBy",              bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_BOUND_BY]),                true },
+        { "ConsistsOf",           bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_CONSISTS_OF]),             true },
+        { "Conflicts",            bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_CONFLICTS]),               true },
+        { "ConflictedBy",         bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]),           true },
+        { "Before",               bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_BEFORE]),                  true },
+        { "After",                bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_AFTER]),                   true },
+        { "OnFailure",            bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_ON_FAILURE]),              true },
+        { "Triggers",             bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_TRIGGERS]),                true },
+        { "TriggeredBy",          bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]),            true },
+        { "PropagatesReloadTo",   bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]),    true },
+        { "ReloadPropagatedFrom", bus_unit_append_dependencies,      "as", offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]),  true },
+        { "RequiresMountsFor",    bus_property_append_strv,          "as", offsetof(Unit, requires_mounts_for),                        true },
+        { "Documentation",        bus_property_append_strv,          "as", offsetof(Unit, documentation),                              true },
+        { "Description",          bus_unit_append_description,        "s", 0 },
+        { "LoadState",            bus_unit_append_load_state,         "s", offsetof(Unit, load_state)                         },
+        { "ActiveState",          bus_unit_append_active_state,       "s", 0 },
+        { "SubState",             bus_unit_append_sub_state,          "s", 0 },
+        { "FragmentPath",         bus_property_append_string,         "s", offsetof(Unit, fragment_path),                              true },
+        { "SourcePath",           bus_property_append_string,         "s", offsetof(Unit, source_path),                                true },
+        { "UnitFileState",        bus_unit_append_file_state,         "s", 0 },
+        { "InactiveExitTimestamp",bus_property_append_usec,           "t", offsetof(Unit, inactive_exit_timestamp.realtime)   },
+        { "InactiveExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, inactive_exit_timestamp.monotonic)  },
+        { "ActiveEnterTimestamp", bus_property_append_usec,           "t", offsetof(Unit, active_enter_timestamp.realtime)    },
+        { "ActiveEnterTimestampMonotonic", bus_property_append_usec,  "t", offsetof(Unit, active_enter_timestamp.monotonic)   },
+        { "ActiveExitTimestamp",  bus_property_append_usec,           "t", offsetof(Unit, active_exit_timestamp.realtime)     },
+        { "ActiveExitTimestampMonotonic",  bus_property_append_usec,  "t", offsetof(Unit, active_exit_timestamp.monotonic)    },
+        { "InactiveEnterTimestamp", bus_property_append_usec,         "t", offsetof(Unit, inactive_enter_timestamp.realtime)  },
+        { "InactiveEnterTimestampMonotonic",bus_property_append_usec, "t", offsetof(Unit, inactive_enter_timestamp.monotonic) },
+        { "CanStart",             bus_unit_append_can_start,          "b", 0 },
+        { "CanStop",              bus_unit_append_can_stop,           "b", 0 },
+        { "CanReload",            bus_unit_append_can_reload,         "b", 0 },
+        { "CanIsolate",           bus_unit_append_can_isolate,        "b", 0 },
+        { "Job",                  bus_unit_append_job,             "(uo)", 0 },
+        { "StopWhenUnneeded",     bus_property_append_bool,           "b", offsetof(Unit, stop_when_unneeded)                 },
+        { "RefuseManualStart",    bus_property_append_bool,           "b", offsetof(Unit, refuse_manual_start)                },
+        { "RefuseManualStop",     bus_property_append_bool,           "b", offsetof(Unit, refuse_manual_stop)                 },
+        { "AllowIsolate",         bus_property_append_bool,           "b", offsetof(Unit, allow_isolate)                      },
+        { "DefaultDependencies",  bus_property_append_bool,           "b", offsetof(Unit, default_dependencies)               },
+        { "OnFailureIsolate",     bus_property_append_bool,           "b", offsetof(Unit, on_failure_isolate)                 },
+        { "IgnoreOnIsolate",      bus_property_append_bool,           "b", offsetof(Unit, ignore_on_isolate)                  },
+        { "IgnoreOnSnapshot",     bus_property_append_bool,           "b", offsetof(Unit, ignore_on_snapshot)                 },
+        { "DefaultControlGroup",  bus_unit_append_default_cgroup,     "s", 0 },
+        { "ControlGroup",         bus_unit_append_cgroups,           "as", 0 },
+        { "ControlGroupAttributes", bus_unit_append_cgroup_attrs,"a(sss)", 0 },
+        { "NeedDaemonReload",     bus_unit_append_need_daemon_reload, "b", 0 },
+        { "JobTimeoutUSec",       bus_property_append_usec,           "t", offsetof(Unit, job_timeout)                        },
+        { "ConditionTimestamp",   bus_property_append_usec,           "t", offsetof(Unit, condition_timestamp.realtime)       },
+        { "ConditionTimestampMonotonic", bus_property_append_usec,    "t", offsetof(Unit, condition_timestamp.monotonic)      },
+        { "ConditionResult",      bus_property_append_bool,           "b", offsetof(Unit, condition_result)                   },
+        { "LoadError",            bus_unit_append_load_error,      "(ss)", 0 },
+        { NULL, }
+};