chiark / gitweb /
logind: add infrastructure to keep track of machines, and move to slices
[elogind.git] / src / login / logind-dbus.c
index a7647e3c80a971c9482e1d74b274ecf7a7460376..631006924f9f6082ed00034976155d19d90fe2f3 100644 (file)
 #include "path-util.h"
 #include "polkit.h"
 #include "special.h"
+#include "sleep-config.h"
 #include "systemd/sd-id128.h"
 #include "systemd/sd-messages.h"
+#include "fileio-label.h"
+#include "label.h"
+#include "utf8.h"
+#include "unit-name.h"
 
 #define BUS_MANAGER_INTERFACE                                           \
         " <interface name=\"org.freedesktop.login1.Manager\">\n"        \
         "   <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n"          \
         "   <arg name=\"user\" type=\"o\" direction=\"out\"/>\n"        \
         "  </method>\n"                                                 \
+        "  <method name=\"GetUserByPID\">\n"                            \
+        "   <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n"          \
+        "   <arg name=\"user\" type=\"o\" direction=\"out\"/>\n"        \
+        "  </method>\n"                                                 \
         "  <method name=\"GetSeat\">\n"                                 \
         "   <arg name=\"id\" type=\"s\" direction=\"in\"/>\n"           \
         "   <arg name=\"seat\" type=\"o\" direction=\"out\"/>\n"        \
         "  </method>\n"                                                 \
+        "  <method name=\"GetMachine\">\n"                              \
+        "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
+        "   <arg name=\"machine\" type=\"o\" direction=\"out\"/>\n"     \
+        "  </method>\n"                                                 \
+        "  <method name=\"GetMachineByPID\">\n"                         \
+        "   <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n"          \
+        "   <arg name=\"machine\" type=\"o\" direction=\"out\"/>\n"     \
+        "  </method>\n"                                                 \
         "  <method name=\"ListSessions\">\n"                            \
         "   <arg name=\"sessions\" type=\"a(susso)\" direction=\"out\"/>\n" \
         "  </method>\n"                                                 \
         "  <method name=\"ListSeats\">\n"                               \
         "   <arg name=\"seats\" type=\"a(so)\" direction=\"out\"/>\n"   \
         "  </method>\n"                                                 \
+        "  <method name=\"ListMachines\">\n"                            \
+        "   <arg name=\"machines\" type=\"a(ssso)\" direction=\"out\"/>\n" \
+        "  </method>\n"                                                 \
         "  <method name=\"CreateSession\">\n"                           \
         "   <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n"          \
         "   <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n"       \
-        "   <arg name=\"sevice\" type=\"s\" direction=\"in\"/>\n"       \
+        "   <arg name=\"service\" type=\"s\" direction=\"in\"/>\n"      \
         "   <arg name=\"type\" type=\"s\" direction=\"in\"/>\n"         \
         "   <arg name=\"class\" type=\"s\" direction=\"in\"/>\n"        \
         "   <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n"         \
         "  <method name=\"ReleaseSession\">\n"                          \
         "   <arg name=\"id\" type=\"s\" direction=\"in\"/>\n"           \
         "  </method>\n"                                                 \
+        "  <method name=\"CreateMachine\">\n"                           \
+        "   <arg name=\"name\" type=\"s\" direction=\"in\"/>\n"         \
+        "   <arg name=\"id\" type=\"ay\" direction=\"in\"/>\n"          \
+        "   <arg name=\"service\" type=\"s\" direction=\"in\"/>\n"      \
+        "   <arg name=\"class\" type=\"s\" direction=\"in\"/>\n"        \
+        "   <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n"       \
+        "   <arg name=\"slice\" type=\"s\" direction=\"in\"/>\n"        \
+        "   <arg name=\"root_directory\" type=\"s\" direction=\"in\"/>\n" \
+        "   <arg name=\"path\" type=\"o\" direction=\"out\"/>\n"        \
+        "  </method>\n"                                                 \
         "  <method name=\"ActivateSession\">\n"                         \
         "   <arg name=\"id\" type=\"s\" direction=\"in\"/>\n"           \
         "  </method>\n"                                                 \
         "   <arg name=\"id\" type=\"s\" direction=\"in\"/>\n"           \
         "  </method>\n"                                                 \
         "  <method name=\"LockSessions\"/>\n"                           \
+        "  <method name=\"UnlockSessions\"/>\n"                         \
         "  <method name=\"KillSession\">\n"                             \
         "   <arg name=\"id\" type=\"s\" direction=\"in\"/>\n"           \
         "   <arg name=\"who\" type=\"s\" direction=\"in\"/>\n"          \
         "  <method name=\"TerminateSeat\">\n"                           \
         "   <arg name=\"id\" type=\"s\" direction=\"in\"/>\n"           \
         "  </method>\n"                                                 \
+        "  <method name=\"TerminateMachine\">\n"                        \
+        "   <arg name=\"id\" type=\"s\" direction=\"in\"/>\n"           \
+        "  </method>\n"                                                 \
         "  <method name=\"SetUserLinger\">\n"                           \
         "   <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n"          \
         "   <arg name=\"b\" type=\"b\" direction=\"in\"/>\n"            \
         "  <method name=\"Hibernate\">\n"                               \
         "   <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n"  \
         "  </method>\n"                                                 \
+        "  <method name=\"HybridSleep\">\n"                             \
+        "   <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n"  \
+        "  </method>\n"                                                 \
         "  <method name=\"CanPowerOff\">\n"                             \
         "   <arg name=\"result\" type=\"s\" direction=\"out\"/>\n"      \
         "  </method>\n"                                                 \
         "  <method name=\"CanHibernate\">\n"                            \
         "   <arg name=\"result\" type=\"s\" direction=\"out\"/>\n"      \
         "  </method>\n"                                                 \
+        "  <method name=\"CanHybridSleep\">\n"                          \
+        "   <arg name=\"result\" type=\"s\" direction=\"out\"/>\n"      \
+        "  </method>\n"                                                 \
         "  <method name=\"Inhibit\">\n"                                 \
         "   <arg name=\"what\" type=\"s\" direction=\"in\"/>\n"         \
         "   <arg name=\"who\" type=\"s\" direction=\"in\"/>\n"          \
         "   <arg name=\"id\" type=\"s\"/>\n"                            \
         "   <arg name=\"path\" type=\"o\"/>\n"                          \
         "  </signal>\n"                                                 \
+        "  <signal name=\"MachineNew\">\n"                              \
+        "   <arg name=\"machine\" type=\"s\"/>\n"                       \
+        "   <arg name=\"path\" type=\"o\"/>\n"                          \
+        "  </signal>\n"                                                 \
+        "  <signal name=\"MachineRemoved\">\n"                          \
+        "   <arg name=\"machine\" type=\"s\"/>\n"                       \
+        "   <arg name=\"path\" type=\"o\"/>\n"                          \
+        "  </signal>\n"                                                 \
         "  <signal name=\"PrepareForShutdown\">\n"                      \
         "   <arg name=\"active\" type=\"b\"/>\n"                        \
         "  </signal>\n"                                                 \
         "  <signal name=\"PrepareForSleep\">\n"                         \
         "   <arg name=\"active\" type=\"b\"/>\n"                        \
         "  </signal>\n"                                                 \
-        "  <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
         "  <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \
         "  <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \
         "  <property name=\"NAutoVTs\" type=\"u\" access=\"read\"/>\n" \
         "  <property name=\"HandleSuspendKey\" type=\"s\" access=\"read\"/>\n" \
         "  <property name=\"HandleHibernateKey\" type=\"s\" access=\"read\"/>\n" \
         "  <property name=\"HandleLidSwitch\" type=\"s\" access=\"read\"/>\n" \
+        "  <property name=\"IdleAction\" type=\"s\" access=\"read\"/>\n" \
+        "  <property name=\"IdleActionUSec\" type=\"t\" access=\"read\"/>\n" \
         "  <property name=\"PreparingForShutdown\" type=\"b\" access=\"read\"/>\n" \
         "  <property name=\"PreparingForSleep\" type=\"b\" access=\"read\"/>\n" \
         " </interface>\n"
@@ -288,30 +337,30 @@ static int bus_manager_append_preparing(DBusMessageIter *i, const char *property
         assert(property);
 
         if (streq(property, "PreparingForShutdown"))
-                b = !!(m->delayed_what & INHIBIT_SHUTDOWN);
+                b = !!(m->action_what & INHIBIT_SHUTDOWN);
         else
-                b = !!(m->delayed_what & INHIBIT_SLEEP);
+                b = !!(m->action_what & INHIBIT_SLEEP);
 
         dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b);
         return 0;
 }
 
 static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMessage **_reply) {
-        Session *session = NULL;
-        User *user = NULL;
-        const char *type, *class, *seat, *tty, *display, *remote_user, *remote_host, *service;
+        const char *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *service;
         uint32_t uid, leader, audit_id = 0;
         dbus_bool_t remote, kill_processes, exists;
-        char **controllers = NULL, **reset_controllers = NULL;
+        _cleanup_strv_free_ char **controllers = NULL, **reset_controllers = NULL;
+        _cleanup_free_ char *cgroup = NULL, *id = NULL, *p = NULL;
         SessionType t;
         SessionClass c;
-        Seat *s;
         DBusMessageIter iter;
         int r;
-        char *id = NULL, *p;
         uint32_t vtnr = 0;
-        int fifo_fd = -1;
-        DBusMessage *reply = NULL;
+        _cleanup_close_ int fifo_fd = -1;
+        _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+        Session *session = NULL;
+        User *user = NULL;
+        Seat *seat = NULL;
         bool b;
 
         assert(m);
@@ -330,8 +379,7 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
 
         dbus_message_iter_get_basic(&iter, &leader);
 
-        if (leader <= 0 ||
-            !dbus_message_iter_next(&iter) ||
+        if (!dbus_message_iter_next(&iter) ||
             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
                 return -EINVAL;
 
@@ -342,31 +390,38 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
                 return -EINVAL;
 
         dbus_message_iter_get_basic(&iter, &type);
-        t = session_type_from_string(type);
+        if (isempty(type))
+                t = _SESSION_TYPE_INVALID;
+        else {
+                t = session_type_from_string(type);
+                if (t < 0)
+                        return -EINVAL;
+        }
 
-        if (t < 0 ||
-            !dbus_message_iter_next(&iter) ||
+        if (!dbus_message_iter_next(&iter) ||
             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
                 return -EINVAL;
 
         dbus_message_iter_get_basic(&iter, &class);
         if (isempty(class))
-                c = SESSION_USER;
-        else
+                c = _SESSION_CLASS_INVALID;
+        else {
                 c = session_class_from_string(class);
+                if (c < 0)
+                        return -EINVAL;
+        }
 
-        if (c < 0 ||
-            !dbus_message_iter_next(&iter) ||
+        if (!dbus_message_iter_next(&iter) ||
             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
                 return -EINVAL;
 
-        dbus_message_iter_get_basic(&iter, &seat);
+        dbus_message_iter_get_basic(&iter, &cseat);
 
-        if (isempty(seat))
-                s = NULL;
+        if (isempty(cseat))
+                seat = NULL;
         else {
-                s = hashmap_get(m->seats, seat);
-                if (!s)
+                seat = hashmap_get(m->seats, cseat);
+                if (!seat)
                         return -ENOENT;
         }
 
@@ -385,9 +440,9 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
         if (tty_is_vc(tty)) {
                 int v;
 
-                if (!s)
-                        s = m->vtconsole;
-                else if (s != m->vtconsole)
+                if (!seat)
+                        seat = m->vtconsole;
+                else if (seat != m->vtconsole)
                         return -EINVAL;
 
                 v = vtnr_from_tty(tty);
@@ -401,19 +456,17 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
                         return -EINVAL;
         } else if (tty_is_console(tty)) {
 
-                if (!s)
-                        s = m->vtconsole;
-                else if (s != m->vtconsole)
+                if (!seat)
+                        seat = m->vtconsole;
+                else if (seat != m->vtconsole)
                         return -EINVAL;
 
                 if (vtnr != 0)
                         return -EINVAL;
+        }
 
-        } else if (!isempty(tty) && s && seat_is_vtconsole(s))
-                return -EINVAL;
-
-        if (s) {
-                if (seat_can_multi_session(s)) {
+        if (seat) {
+                if (seat_can_multi_session(seat)) {
                         if (vtnr > 63)
                                 return -EINVAL;
                 } else {
@@ -432,6 +485,22 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN)
                 return -EINVAL;
 
+        if (t == _SESSION_TYPE_INVALID) {
+                if (!isempty(display))
+                        t = SESSION_X11;
+                else if (!isempty(tty))
+                        t = SESSION_TTY;
+                else
+                        t = SESSION_UNSPECIFIED;
+        }
+
+        if (c == _SESSION_CLASS_INVALID) {
+                if (!isempty(display) || !isempty(tty))
+                        c = SESSION_USER;
+                else
+                        c = SESSION_BACKGROUND;
+        }
+
         dbus_message_iter_get_basic(&iter, &remote);
 
         if (!dbus_message_iter_next(&iter) ||
@@ -455,8 +524,7 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
         if (r < 0)
                 return -EINVAL;
 
-        if (strv_contains(controllers, "systemd") ||
-            !dbus_message_iter_next(&iter) ||
+        if (!dbus_message_iter_next(&iter) ||
             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING) {
                 r = -EINVAL;
@@ -467,8 +535,7 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
         if (r < 0)
                 goto fail;
 
-        if (strv_contains(reset_controllers, "systemd") ||
-            !dbus_message_iter_next(&iter) ||
+        if (!dbus_message_iter_next(&iter) ||
             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) {
                 r = -EINVAL;
                 goto fail;
@@ -476,78 +543,90 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
 
         dbus_message_iter_get_basic(&iter, &kill_processes);
 
-        r = manager_add_user_by_uid(m, uid, &user);
+        if (leader <= 0) {
+                leader = bus_get_unix_process_id(m->bus, dbus_message_get_sender(message), NULL);
+                if (leader == 0)
+                        return -EINVAL;
+        }
+
+        r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, leader, &cgroup);
         if (r < 0)
                 goto fail;
 
-        audit_session_from_pid(leader, &audit_id);
-
-        if (audit_id > 0) {
-                asprintf(&id, "%lu", (unsigned long) audit_id);
+        r = manager_get_session_by_cgroup(m, cgroup, &session);
+        if (r < 0)
+                goto fail;
 
-                if (!id) {
-                        r = -ENOMEM;
+        if (session) {
+                fifo_fd = session_create_fifo(session);
+                if (fifo_fd < 0) {
+                        r = fifo_fd;
                         goto fail;
                 }
 
-                session = hashmap_get(m->sessions, id);
+                /* Session already exists, client is probably
+                 * something like "su" which changes uid but
+                 * is still the same audit session */
 
-                if (session) {
-                        free(id);
+                reply = dbus_message_new_method_return(message);
+                if (!reply) {
+                        r = -ENOMEM;
+                        goto fail;
+                }
 
-                        fifo_fd = session_create_fifo(session);
-                        if (fifo_fd < 0) {
-                                r = fifo_fd;
-                                goto fail;
-                        }
+                p = session_bus_path(session);
+                if (!p) {
+                        r = -ENOMEM;
+                        goto fail;
+                }
 
-                        /* Session already exists, client is probably
-                         * something like "su" which changes uid but
-                         * is still the same audit session */
+                cseat = session->seat ? session->seat->id : "";
+                vtnr = session->vtnr;
+                exists = true;
 
-                        reply = dbus_message_new_method_return(message);
-                        if (!reply) {
-                                r = -ENOMEM;
-                                goto fail;
-                        }
+                b = dbus_message_append_args(
+                                reply,
+                                DBUS_TYPE_STRING, &session->id,
+                                DBUS_TYPE_OBJECT_PATH, &p,
+                                DBUS_TYPE_STRING, &session->user->runtime_path,
+                                DBUS_TYPE_UNIX_FD, &fifo_fd,
+                                DBUS_TYPE_STRING, &cseat,
+                                DBUS_TYPE_UINT32, &vtnr,
+                                DBUS_TYPE_BOOLEAN, &exists,
+                                DBUS_TYPE_INVALID);
+                if (!b) {
+                        r = -ENOMEM;
+                        goto fail;
+                }
 
-                        p = session_bus_path(session);
-                        if (!p) {
-                                r = -ENOMEM;
-                                goto fail;
-                        }
+                *_reply = reply;
+                reply = NULL;
 
-                        seat = session->seat ? session->seat->id : "";
-                        vtnr = session->vtnr;
-                        exists = true;
-
-                        b = dbus_message_append_args(
-                                        reply,
-                                        DBUS_TYPE_STRING, &session->id,
-                                        DBUS_TYPE_OBJECT_PATH, &p,
-                                        DBUS_TYPE_STRING, &session->user->runtime_path,
-                                        DBUS_TYPE_UNIX_FD, &fifo_fd,
-                                        DBUS_TYPE_STRING, &seat,
-                                        DBUS_TYPE_UINT32, &vtnr,
-                                        DBUS_TYPE_BOOLEAN, &exists,
-                                        DBUS_TYPE_INVALID);
-                        free(p);
+                return 0;
+        }
 
-                        if (!b) {
-                                r = -ENOMEM;
-                                goto fail;
-                        }
+        audit_session_from_pid(leader, &audit_id);
+        if (audit_id > 0) {
+                /* Keep our session IDs and the audit session IDs in sync */
 
-                        close_nointr_nofail(fifo_fd);
-                        *_reply = reply;
+                if (asprintf(&id, "%lu", (unsigned long) audit_id) < 0) {
+                        r = -ENOMEM;
+                        goto fail;
+                }
 
-                        strv_free(controllers);
-                        strv_free(reset_controllers);
+                /* Wut? There's already a session by this name and we
+                 * didn't find it above? Weird, then let's not trust
+                 * the audit data and let's better register a new
+                 * ID */
+                if (hashmap_get(m->sessions, id)) {
+                        audit_id = 0;
 
-                        return 0;
+                        free(id);
+                        id = NULL;
                 }
+        }
 
-        } else {
+        if (!id) {
                 do {
                         free(id);
                         id = NULL;
@@ -560,21 +639,26 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
                 } while (hashmap_get(m->sessions, id));
         }
 
-        r = manager_add_session(m, user, id, &session);
-        free(id);
+        r = manager_add_user_by_uid(m, uid, &user);
         if (r < 0)
                 goto fail;
 
+        r = manager_add_session(m, id, &session);
+        if (r < 0)
+                goto fail;
+
+        session_set_user(session, user);
+
         session->leader = leader;
         session->audit_id = audit_id;
         session->type = t;
         session->class = c;
         session->remote = remote;
-        session->controllers = controllers;
-        session->reset_controllers = reset_controllers;
         session->kill_processes = kill_processes;
         session->vtnr = vtnr;
 
+        session->controllers = cg_shorten_controllers(controllers);
+        session->reset_controllers = cg_shorten_controllers(reset_controllers);
         controllers = reset_controllers = NULL;
 
         if (!isempty(tty)) {
@@ -623,8 +707,8 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
                 goto fail;
         }
 
-        if (s) {
-                r = seat_attach_session(s, session);
+        if (seat) {
+                r = seat_attach_session(seat, session);
                 if (r < 0)
                         goto fail;
         }
@@ -645,7 +729,7 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
                 goto fail;
         }
 
-        seat = s ? s->id : "";
+        cseat = seat ? seat->id : "";
         exists = false;
         b = dbus_message_append_args(
                         reply,
@@ -653,42 +737,215 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess
                         DBUS_TYPE_OBJECT_PATH, &p,
                         DBUS_TYPE_STRING, &session->user->runtime_path,
                         DBUS_TYPE_UNIX_FD, &fifo_fd,
-                        DBUS_TYPE_STRING, &seat,
+                        DBUS_TYPE_STRING, &cseat,
                         DBUS_TYPE_UINT32, &vtnr,
                         DBUS_TYPE_BOOLEAN, &exists,
                         DBUS_TYPE_INVALID);
-        free(p);
 
         if (!b) {
                 r = -ENOMEM;
                 goto fail;
         }
 
-        close_nointr_nofail(fifo_fd);
         *_reply = reply;
+        reply = NULL;
 
         return 0;
 
 fail:
-        strv_free(controllers);
-        strv_free(reset_controllers);
-
         if (session)
                 session_add_to_gc_queue(session);
 
         if (user)
                 user_add_to_gc_queue(user);
 
-        if (fifo_fd >= 0)
-                close_nointr_nofail(fifo_fd);
+        return r;
+}
+
+static bool valid_machine_name(const char *p) {
+        size_t l;
+
+        if (!filename_is_safe(p))
+                return false;
+
+        if (!ascii_is_valid(p))
+                return false;
+
+        l = strlen(p);
+
+        if (l < 1 || l> 64)
+                return false;
+
+        return true;
+}
+
+static int bus_manager_create_machine(
+                Manager *manager,
+                DBusMessage *message,
+                DBusMessage **_reply) {
+
+        const char *name, *service, *class, *slice, *root_directory;
+        _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+        _cleanup_free_ char *p = NULL;
+        DBusMessageIter iter, sub;
+        MachineClass c;
+        uint32_t leader;
+        sd_id128_t id;
+        dbus_bool_t b;
+        Machine *m;
+        int n, r;
+        void *v;
+
+        assert(manager);
+        assert(message);
+        assert(_reply);
+
+        if (!dbus_message_iter_init(message, &iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+                return -EINVAL;
 
-        if (reply)
-                dbus_message_unref(reply);
+        dbus_message_iter_get_basic(&iter, &name);
+
+        if (!valid_machine_name(name) ||
+            !dbus_message_iter_next(&iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
+            dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_BYTE)
+                return -EINVAL;
+
+        dbus_message_iter_recurse(&iter, &sub);
+        dbus_message_iter_get_fixed_array(&sub, &v, &n);
+
+        if (n == 0)
+                id = SD_ID128_NULL;
+        else if (n == 16)
+                memcpy(&id, v, n);
+        else
+                return -EINVAL;
+
+        if (!dbus_message_iter_next(&iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+                return -EINVAL;
+
+        dbus_message_iter_get_basic(&iter, &service);
+
+        if (!dbus_message_iter_next(&iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+                return -EINVAL;
+
+        dbus_message_iter_get_basic(&iter, &class);
+
+        if (isempty(class))
+                c = _MACHINE_CLASS_INVALID;
+        else {
+                c = machine_class_from_string(class);
+                if (c < 0)
+                        return -EINVAL;
+        }
+
+        if (!dbus_message_iter_next(&iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
+                return -EINVAL;
+
+        dbus_message_iter_get_basic(&iter, &leader);
+        if (!dbus_message_iter_next(&iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+                return -EINVAL;
+
+        dbus_message_iter_get_basic(&iter, &slice);
+        if (!(isempty(slice) || (unit_name_is_valid(slice, false) && endswith(slice, ".slice"))) ||
+            !dbus_message_iter_next(&iter) ||
+            dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+                return -EINVAL;
+
+        dbus_message_iter_get_basic(&iter, &root_directory);
+
+        if (!(isempty(root_directory) || path_is_absolute(root_directory)))
+                return -EINVAL;
+
+        if (hashmap_get(manager->machines, name))
+                return -EEXIST;
+
+        if (leader <= 0) {
+                leader = bus_get_unix_process_id(manager->bus, dbus_message_get_sender(message), NULL);
+                if (leader == 0)
+                        return -EINVAL;
+        }
+
+        r = manager_add_machine(manager, name, &m);
+        if (r < 0)
+                goto fail;
+
+        m->leader = leader;
+        m->class = c;
+        m->id = id;
+
+        if (!isempty(service)) {
+                m->service = strdup(service);
+                if (!m->service) {
+                        r = -ENOMEM;
+                        goto fail;
+                }
+        }
+
+        if (!isempty(slice)) {
+                m->slice = strdup(slice);
+                if (!m->slice) {
+                        r = -ENOMEM;
+                        goto fail;
+                }
+        }
+
+        if (!isempty(root_directory)) {
+                m->root_directory = strdup(root_directory);
+                if (!m->root_directory) {
+                        r = -ENOMEM;
+                        goto fail;
+                }
+        }
+
+        r = machine_start(m);
+        if (r < 0)
+                goto fail;
+
+        reply = dbus_message_new_method_return(message);
+        if (!reply) {
+                r = -ENOMEM;
+                goto fail;
+        }
+
+        p = machine_bus_path(m);
+        if (!p) {
+                r = -ENOMEM;
+                goto fail;
+        }
+
+        b = dbus_message_append_args(
+                        reply,
+                        DBUS_TYPE_OBJECT_PATH, &p,
+                        DBUS_TYPE_INVALID);
+        if (!b) {
+                r = -ENOMEM;
+                goto fail;
+        }
+
+        *_reply = reply;
+        reply = NULL;
+        return 0;
+
+fail:
+        if (m)
+                machine_add_to_gc_queue(m);
 
         return r;
 }
 
-static int bus_manager_inhibit(Manager *m, DBusConnection *connection, DBusMessage *message, DBusError *error, DBusMessage **_reply) {
+static int bus_manager_inhibit(
+                Manager *m,
+                DBusConnection *connection,
+                DBusMessage *message,
+                DBusError *error,
+                DBusMessage **_reply) {
+
         Inhibitor *i = NULL;
         char *id = NULL;
         const char *who, *why, *what, *mode;
@@ -697,7 +954,7 @@ static int bus_manager_inhibit(Manager *m, DBusConnection *connection, DBusMessa
         InhibitMode mm;
         unsigned long ul;
         int r, fifo_fd = -1;
-        DBusMessage *reply = NULL;
+        _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
 
         assert(m);
         assert(connection);
@@ -735,6 +992,15 @@ static int bus_manager_inhibit(Manager *m, DBusConnection *connection, DBusMessa
                 goto fail;
         }
 
+        /* Don't allow taking delay locks while we are already
+         * executing the operation. We shouldn't create the impression
+         * that the lock was successful if the machine is about to go
+         * down/suspend any moment. */
+        if (m->action_what & w) {
+                r = -EALREADY;
+                goto fail;
+        }
+
         r = verify_polkit(connection, message,
                           w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
                           w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
@@ -809,6 +1075,7 @@ static int bus_manager_inhibit(Manager *m, DBusConnection *connection, DBusMessa
 
         close_nointr_nofail(fifo_fd);
         *_reply = reply;
+        reply = NULL;
 
         inhibitor_start(i);
 
@@ -821,9 +1088,6 @@ fail:
         if (fifo_fd >= 0)
                 close_nointr_nofail(fifo_fd);
 
-        if (reply)
-                dbus_message_unref(reply);
-
         return r;
 }
 
@@ -865,7 +1129,7 @@ static int trigger_device(Manager *m, struct udev_device *d) {
                         goto finish;
                 }
 
-                write_one_line_file(t, "change");
+                write_string_file(t, "change");
                 free(t);
         }
 
@@ -880,7 +1144,7 @@ finish:
 
 static int attach_device(Manager *m, const char *seat, const char *sysfs) {
         struct udev_device *d;
-        char *rule = NULL, *file = NULL;
+        _cleanup_free_ char *rule = NULL, *file = NULL;
         const char *id_for_seat;
         int r;
 
@@ -914,16 +1178,14 @@ static int attach_device(Manager *m, const char *seat, const char *sysfs) {
         }
 
         mkdir_p_label("/etc/udev/rules.d", 0755);
-        r = write_one_line_file_atomic(file, rule);
+        label_init("/etc");
+        r = write_string_file_atomic_label(file, rule);
         if (r < 0)
                 goto finish;
 
         r = trigger_device(m, d);
 
 finish:
-        free(rule);
-        free(file);
-
         if (d)
                 udev_device_unref(d);
 
@@ -931,7 +1193,7 @@ finish:
 }
 
 static int flush_devices(Manager *m) {
-        DIR *d;
+        _cleanup_closedir_ DIR *d;
 
         assert(m);
 
@@ -956,8 +1218,6 @@ static int flush_devices(Manager *m) {
                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
                                 log_warning("Failed to unlink %s: %m", de->d_name);
                 }
-
-                closedir(d);
         }
 
         return trigger_device(m, NULL);
@@ -972,75 +1232,115 @@ static int have_multiple_sessions(
 
         assert(m);
 
-        /* Check for other users' sessions. Greeter sessions do not count. */
+        /* Check for other users' sessions. Greeter sessions do not
+         * count, and non-login sessions do not count either. */
         HASHMAP_FOREACH(session, m->sessions, i)
-                if (session->class == SESSION_USER && session->user->uid != uid)
+                if (session->class == SESSION_USER &&
+                    session->user->uid != uid)
                         return true;
 
         return false;
 }
 
-static int send_start_unit(DBusConnection *connection, const char *unit_name, DBusError *error) {
-        const char *mode = "replace";
+static int bus_manager_log_shutdown(
+                Manager *m,
+                InhibitWhat w,
+                const char *unit_name) {
+
+        const char *p, *q;
 
+        assert(m);
         assert(unit_name);
 
-        return bus_method_call_with_reply (
-                        connection,
+        if (w != INHIBIT_SHUTDOWN)
+                return 0;
+
+        if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
+                p = "MESSAGE=System is powering down.";
+                q = "SHUTDOWN=power-off";
+        } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
+                p = "MESSAGE=System is halting.";
+                q = "SHUTDOWN=halt";
+        } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
+                p = "MESSAGE=System is rebooting.";
+                q = "SHUTDOWN=reboot";
+        } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
+                p = "MESSAGE=System is rebooting with kexec.";
+                q = "SHUTDOWN=kexec";
+        } else {
+                p = "MESSAGE=System is shutting down.";
+                q = NULL;
+        }
+
+        return log_struct(LOG_NOTICE, MESSAGE_ID(SD_MESSAGE_SHUTDOWN),
+                          p,
+                          q, NULL);
+}
+
+static int execute_shutdown_or_sleep(
+                Manager *m,
+                InhibitWhat w,
+                const char *unit_name,
+                DBusError *error) {
+
+        _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+        const char *mode = "replace-irreversibly", *p;
+        int r;
+        char *c;
+
+        assert(m);
+        assert(w >= 0);
+        assert(w < _INHIBIT_WHAT_MAX);
+        assert(unit_name);
+
+        bus_manager_log_shutdown(m, w, unit_name);
+
+        r = bus_method_call_with_reply(
+                        m->bus,
                         "org.freedesktop.systemd1",
                         "/org/freedesktop/systemd1",
                         "org.freedesktop.systemd1.Manager",
                         "StartUnit",
-                        NULL,
-                        NULL,
+                        &reply,
+                        error,
                         DBUS_TYPE_STRING, &unit_name,
                         DBUS_TYPE_STRING, &mode,
                         DBUS_TYPE_INVALID);
-}
-
-static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
-        static const char * const signal_name[_INHIBIT_WHAT_MAX] = {
-                [INHIBIT_SHUTDOWN] = "PrepareForShutdown",
-                [INHIBIT_SLEEP] = "PrepareForSleep"
-        };
-
-        dbus_bool_t active = _active;
-        DBusMessage *message;
-        int r = 0;
+        if (r < 0)
+                return r;
 
-        assert(m);
-        assert(w >= 0);
-        assert(w < _INHIBIT_WHAT_MAX);
-        assert(signal_name[w]);
+        if (!dbus_message_get_args(
+                            reply,
+                            error,
+                            DBUS_TYPE_OBJECT_PATH, &p,
+                            DBUS_TYPE_INVALID))
+                return -EINVAL;
 
-        message = dbus_message_new_signal("/org/freedesktop/login1", "org.freedesktop.login1.Manager", signal_name[w]);
-        if (!message)
+        c = strdup(p);
+        if (!c)
                 return -ENOMEM;
 
-        if (!dbus_message_append_args(message, DBUS_TYPE_BOOLEAN, &active, DBUS_TYPE_INVALID) ||
-            !dbus_connection_send(m->bus, message, NULL))
-                r = -ENOMEM;
+        m->action_unit = unit_name;
+        free(m->action_job);
+        m->action_job = c;
+        m->action_what = w;
 
-        dbus_message_unref(message);
-        return r;
+        return 0;
 }
 
-static int delay_shutdown_or_sleep(Manager *m, InhibitWhat w, const char *unit_name) {
+static int delay_shutdown_or_sleep(
+                Manager *m,
+                InhibitWhat w,
+                const char *unit_name) {
+
         assert(m);
         assert(w >= 0);
         assert(w < _INHIBIT_WHAT_MAX);
+        assert(unit_name);
 
-        /* Tell everybody to prepare for shutdown/sleep */
-        send_prepare_for(m, w, true);
-
-        /* Update timestamp for timeout */
-        if (!m->delayed_unit)
-                m->delayed_timestamp = now(CLOCK_MONOTONIC);
-
-        /* Remember what we want to do, possibly overriding what kind
-         * of unit we previously queued. */
-        m->delayed_unit = unit_name;
-        m->delayed_what = w;
+        m->action_timestamp = now(CLOCK_MONOTONIC);
+        m->action_unit = unit_name;
+        m->action_what = w;
 
         return 0;
 }
@@ -1053,13 +1353,13 @@ static int bus_manager_can_shutdown_or_sleep(
                 const char *action,
                 const char *action_multiple_sessions,
                 const char *action_ignore_inhibit,
-                const char *sleep_type,
+                const char *sleep_verb,
                 DBusError *error,
                 DBusMessage **_reply) {
 
         bool multiple_sessions, challenge, blocked, b;
-        const char *result;
-        DBusMessage *reply = NULL;
+        const char *result = NULL;
+        _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
         int r;
         unsigned long ul;
 
@@ -1074,11 +1374,10 @@ static int bus_manager_can_shutdown_or_sleep(
         assert(error);
         assert(_reply);
 
-        if (sleep_type) {
-                r = can_sleep(sleep_type);
+        if (sleep_verb) {
+                r = can_sleep(sleep_verb);
                 if (r < 0)
                         return r;
-
                 if (r == 0) {
                         result = "na";
                         goto finish;
@@ -1147,48 +1446,37 @@ finish:
                         reply,
                         DBUS_TYPE_STRING, &result,
                         DBUS_TYPE_INVALID);
-        if (!b) {
-                dbus_message_unref(reply);
+        if (!b)
                 return -ENOMEM;
-        }
 
         *_reply = reply;
+        reply = NULL;
         return 0;
 }
 
-static int bus_manager_log_shutdown(
-                Manager *m,
-                InhibitWhat w,
-                const char *unit_name) {
+static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
+        static const char * const signal_name[_INHIBIT_WHAT_MAX] = {
+                [INHIBIT_SHUTDOWN] = "PrepareForShutdown",
+                [INHIBIT_SLEEP] = "PrepareForSleep"
+        };
 
-        const char *p, *q;
+        dbus_bool_t active = _active;
+        _cleanup_dbus_message_unref_ DBusMessage *message = NULL;
 
         assert(m);
-        assert(unit_name);
-
-        if (w != INHIBIT_SHUTDOWN)
-                return 0;
+        assert(w >= 0);
+        assert(w < _INHIBIT_WHAT_MAX);
+        assert(signal_name[w]);
 
-        if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
-                p = "MESSAGE=System is powering down.";
-                q = "SHUTDOWN=power-off";
-        } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
-                p = "MESSAGE=System is halting.";
-                q = "SHUTDOWN=halt";
-        } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
-                p = "MESSAGE=System is rebooting.";
-                q = "SHUTDOWN=reboot";
-        } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
-                p = "MESSAGE=System is rebooting with kexec.";
-                q = "SHUTDOWN=kexec";
-        } else {
-                p = "MESSAGE=System is shutting down.";
-                q = NULL;
-        }
+        message = dbus_message_new_signal("/org/freedesktop/login1", "org.freedesktop.login1.Manager", signal_name[w]);
+        if (!message)
+                return -ENOMEM;
 
-        return log_struct(LOG_NOTICE, MESSAGE_ID(SD_MESSAGE_SHUTDOWN),
-                          p,
-                          q, NULL);
+        if (!dbus_message_append_args(message, DBUS_TYPE_BOOLEAN, &active, DBUS_TYPE_INVALID) ||
+            !dbus_connection_send(m->bus, message, NULL))
+                return -ENOMEM;
+
+        return 0;
 }
 
 int bus_manager_shutdown_or_sleep_now_or_later(
@@ -1204,6 +1492,10 @@ int bus_manager_shutdown_or_sleep_now_or_later(
         assert(unit_name);
         assert(w >= 0);
         assert(w <= _INHIBIT_WHAT_MAX);
+        assert(!m->action_job);
+
+        /* Tell everybody to prepare for shutdown/sleep */
+        send_prepare_for(m, w, true);
 
         delayed =
                 m->inhibit_delay_max > 0 &&
@@ -1213,13 +1505,10 @@ int bus_manager_shutdown_or_sleep_now_or_later(
                 /* Shutdown is delayed, keep in mind what we
                  * want to do, and start a timeout */
                 r = delay_shutdown_or_sleep(m, w, unit_name);
-        else {
-                bus_manager_log_shutdown(m, w, unit_name);
-
+        else
                 /* Shutdown is not delayed, execute it
                  * immediately */
-                r = send_start_unit(m->bus, unit_name, error);
-        }
+                r = execute_shutdown_or_sleep(m, w, unit_name, error);
 
         return r;
 }
@@ -1233,7 +1522,7 @@ static int bus_manager_do_shutdown_or_sleep(
                 const char *action,
                 const char *action_multiple_sessions,
                 const char *action_ignore_inhibit,
-                const char *sleep_type,
+                const char *sleep_verb,
                 DBusError *error,
                 DBusMessage **_reply) {
 
@@ -1255,6 +1544,10 @@ static int bus_manager_do_shutdown_or_sleep(
         assert(error);
         assert(_reply);
 
+        /* Don't allow multiple jobs being executed at the same time */
+        if (m->action_what)
+                return -EALREADY;
+
         if (!dbus_message_get_args(
                             message,
                             error,
@@ -1262,8 +1555,8 @@ static int bus_manager_do_shutdown_or_sleep(
                             DBUS_TYPE_INVALID))
                 return -EINVAL;
 
-        if (sleep_type) {
-                r = can_sleep(sleep_type);
+        if (sleep_verb) {
+                r = can_sleep(sleep_verb);
                 if (r < 0)
                         return r;
 
@@ -1312,10 +1605,9 @@ static int bus_manager_do_shutdown_or_sleep(
         return 0;
 }
 
-static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_handle_button, handle_button, HandleButton);
+static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_handle_action, handle_action, HandleAction);
 
 static const BusProperty bus_login_manager_properties[] = {
-        { "ControlGroupHierarchy",  bus_property_append_string,         "s",  offsetof(Manager, cgroup_path),        true },
         { "Controllers",            bus_property_append_strv,           "as", offsetof(Manager, controllers),        true },
         { "ResetControllers",       bus_property_append_strv,           "as", offsetof(Manager, reset_controllers),  true },
         { "NAutoVTs",               bus_property_append_unsigned,       "u",  offsetof(Manager, n_autovts)           },
@@ -1328,10 +1620,12 @@ static const BusProperty bus_login_manager_properties[] = {
         { "BlockInhibited",         bus_manager_append_inhibited,       "s",  0 },
         { "DelayInhibited",         bus_manager_append_inhibited,       "s",  0 },
         { "InhibitDelayMaxUSec",    bus_property_append_usec,           "t",  offsetof(Manager, inhibit_delay_max)   },
-        { "HandlePowerKey",         bus_manager_append_handle_button,   "s",  offsetof(Manager, handle_power_key)    },
-        { "HandleSuspendKey",       bus_manager_append_handle_button,   "s",  offsetof(Manager, handle_suspend_key)  },
-        { "HandleHibernateKey",     bus_manager_append_handle_button,   "s",  offsetof(Manager, handle_hibernate_key)},
-        { "HandleLidSwitch",        bus_manager_append_handle_button,   "s",  offsetof(Manager, handle_lid_switch)   },
+        { "HandlePowerKey",         bus_manager_append_handle_action,   "s",  offsetof(Manager, handle_power_key)    },
+        { "HandleSuspendKey",       bus_manager_append_handle_action,   "s",  offsetof(Manager, handle_suspend_key)  },
+        { "HandleHibernateKey",     bus_manager_append_handle_action,   "s",  offsetof(Manager, handle_hibernate_key)},
+        { "HandleLidSwitch",        bus_manager_append_handle_action,   "s",  offsetof(Manager, handle_lid_switch)   },
+        { "IdleAction",             bus_manager_append_handle_action,   "s",  offsetof(Manager, idle_action)         },
+        { "IdleActionUSec",         bus_property_append_usec,           "t",  offsetof(Manager, idle_action_usec) },
         { "PreparingForShutdown",   bus_manager_append_preparing,       "b",  0 },
         { "PreparingForSleep",      bus_manager_append_preparing,       "b",  0 },
         { NULL, }
@@ -1345,7 +1639,7 @@ static DBusHandlerResult manager_message_handler(
         Manager *m = userdata;
 
         DBusError error;
-        DBusMessage *reply = NULL;
+        _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
         int r;
 
         assert(connection);
@@ -1456,6 +1750,107 @@ static DBusHandlerResult manager_message_handler(
                 if (!b)
                         goto oom;
 
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUserByPID")) {
+                uint32_t pid;
+                char *p;
+                User *user;
+                bool b;
+
+                if (!dbus_message_get_args(
+                                    message,
+                                    &error,
+                                    DBUS_TYPE_UINT32, &pid,
+                                    DBUS_TYPE_INVALID))
+                        return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+                r = manager_get_user_by_pid(m, pid, &user);
+                if (r <= 0)
+                        return bus_send_error_reply(connection, message, NULL, r < 0 ? r : -ENOENT);
+
+                reply = dbus_message_new_method_return(message);
+                if (!reply)
+                        goto oom;
+
+                p = user_bus_path(user);
+                if (!p)
+                        goto oom;
+
+                b = dbus_message_append_args(
+                                reply,
+                                DBUS_TYPE_OBJECT_PATH, &p,
+                                DBUS_TYPE_INVALID);
+                free(p);
+
+                if (!b)
+                        goto oom;
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetMachine")) {
+                Machine *machine;
+                const char *name;
+                char *p;
+                bool b;
+
+                if (!dbus_message_get_args(
+                                    message,
+                                    &error,
+                                    DBUS_TYPE_STRING, &name,
+                                    DBUS_TYPE_INVALID))
+                        return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+                machine = hashmap_get(m->machines, name);
+                if (!machine)
+                        return bus_send_error_reply(connection, message, &error, -ENOENT);
+
+                reply = dbus_message_new_method_return(message);
+                if (!reply)
+                        goto oom;
+
+                p = machine_bus_path(machine);
+                if (!p)
+                        goto oom;
+
+                b = dbus_message_append_args(
+                                reply,
+                                DBUS_TYPE_OBJECT_PATH, &p,
+                                DBUS_TYPE_INVALID);
+                free(p);
+
+                if (!b)
+                        goto oom;
+
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetMachineByPID")) {
+                uint32_t pid;
+                char *p;
+                Machine *machine;
+                bool b;
+
+                if (!dbus_message_get_args(
+                                    message,
+                                    &error,
+                                    DBUS_TYPE_UINT32, &pid,
+                                    DBUS_TYPE_INVALID))
+                        return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+                r = manager_get_machine_by_pid(m, pid, &machine);
+                if (r <= 0)
+                        return bus_send_error_reply(connection, message, NULL, r < 0 ? r : -ENOENT);
+
+                reply = dbus_message_new_method_return(message);
+                if (!reply)
+                        goto oom;
+
+                p = machine_bus_path(machine);
+                if (!p)
+                        goto oom;
+
+                b = dbus_message_append_args(
+                                reply,
+                                DBUS_TYPE_OBJECT_PATH, &p,
+                                DBUS_TYPE_INVALID);
+                free(p);
+
+                if (!b)
+                        goto oom;
+
         } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSeat")) {
                 const char *name;
                 char *p;
@@ -1538,7 +1933,6 @@ static DBusHandlerResult manager_message_handler(
                         goto oom;
 
         } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListUsers")) {
-                char *p;
                 User *user;
                 Iterator i;
                 DBusMessageIter iter, sub;
@@ -1553,6 +1947,7 @@ static DBusHandlerResult manager_message_handler(
                         goto oom;
 
                 HASHMAP_FOREACH(user, m->users, i) {
+                        _cleanup_free_ char *p = NULL;
                         DBusMessageIter sub2;
                         uint32_t uid;
 
@@ -1572,8 +1967,6 @@ static DBusHandlerResult manager_message_handler(
                                 goto oom;
                         }
 
-                        free(p);
-
                         if (!dbus_message_iter_close_container(&sub, &sub2))
                                 goto oom;
                 }
@@ -1582,7 +1975,6 @@ static DBusHandlerResult manager_message_handler(
                         goto oom;
 
         } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSeats")) {
-                char *p;
                 Seat *seat;
                 Iterator i;
                 DBusMessageIter iter, sub;
@@ -1597,6 +1989,7 @@ static DBusHandlerResult manager_message_handler(
                         goto oom;
 
                 HASHMAP_FOREACH(seat, m->seats, i) {
+                        _cleanup_free_ char *p = NULL;
                         DBusMessageIter sub2;
 
                         if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
@@ -1612,8 +2005,6 @@ static DBusHandlerResult manager_message_handler(
                                 goto oom;
                         }
 
-                        free(p);
-
                         if (!dbus_message_iter_close_container(&sub, &sub2))
                                 goto oom;
                 }
@@ -1665,6 +2056,49 @@ static DBusHandlerResult manager_message_handler(
                 if (!dbus_message_iter_close_container(&iter, &sub))
                         goto oom;
 
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListMachines")) {
+                Machine *machine;
+                Iterator i;
+                DBusMessageIter iter, sub;
+
+                reply = dbus_message_new_method_return(message);
+                if (!reply)
+                        goto oom;
+
+                dbus_message_iter_init_append(reply, &iter);
+
+                if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssso)", &sub))
+                        goto oom;
+
+                HASHMAP_FOREACH(machine, m->machines, i) {
+                        _cleanup_free_ char *p = NULL;
+                        DBusMessageIter sub2;
+                        const char *class;
+
+                        if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
+                                goto oom;
+
+                        p = machine_bus_path(machine);
+                        if (!p)
+                                goto oom;
+
+                        class = strempty(machine_class_to_string(machine->class));
+
+                        if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &machine->name) ||
+                            !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &class) ||
+                            !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &machine->service) ||
+                            !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
+                                free(p);
+                                goto oom;
+                        }
+
+                        if (!dbus_message_iter_close_container(&sub, &sub2))
+                                goto oom;
+                }
+
+                if (!dbus_message_iter_close_container(&iter, &sub))
+                        goto oom;
+
         } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Inhibit")) {
 
                 r = bus_manager_inhibit(m, connection, message, &error, &reply);
@@ -1684,6 +2118,11 @@ static DBusHandlerResult manager_message_handler(
 
                 if (r < 0)
                         return bus_send_error_reply(connection, message, NULL, r);
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CreateMachine")) {
+
+                r = bus_manager_create_machine(m, message, &reply);
+                if (r < 0)
+                        return bus_send_error_reply(connection, message, NULL, r);
 
         } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ReleaseSession")) {
                 const char *name;
@@ -1784,7 +2223,7 @@ static DBusHandlerResult manager_message_handler(
 
                 session = hashmap_get(m->sessions, name);
                 if (!session)
-                        return bus_send_error_reply(connection, message, &error, -ENOENT);
+                        return bus_send_error_reply(connection, message, NULL, -ENOENT);
 
                 if (session_send_lock(session, streq(dbus_message_get_member(message), "LockSession")) < 0)
                         goto oom;
@@ -1793,13 +2232,12 @@ static DBusHandlerResult manager_message_handler(
                 if (!reply)
                         goto oom;
 
-        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "LockSessions")) {
-                Session *session;
-                Iterator i;
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "LockSessions") ||
+                   dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "UnlockSessions")) {
 
-                HASHMAP_FOREACH(session, m->sessions, i)
-                        if (session_send_lock(session, true) < 0)
-                                goto oom;
+                r = session_send_lock_all(m, streq(dbus_message_get_member(message), "LockSessions"));
+                if (r < 0)
+                        bus_send_error_reply(connection, message, NULL, r);
 
                 reply = dbus_message_new_method_return(message);
                 if (!reply)
@@ -1872,6 +2310,45 @@ static DBusHandlerResult manager_message_handler(
                 if (!reply)
                         goto oom;
 
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillMachine")) {
+                const char *swho;
+                int32_t signo;
+                KillWho who;
+                const char *name;
+                Machine *machine;
+
+                if (!dbus_message_get_args(
+                                    message,
+                                    &error,
+                                    DBUS_TYPE_STRING, &name,
+                                    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);
+
+                machine = hashmap_get(m->machines, name);
+                if (!machine)
+                        return bus_send_error_reply(connection, message, &error, -ENOENT);
+
+                r = machine_kill(machine, who, signo);
+                if (r < 0)
+                        return bus_send_error_reply(connection, message, NULL, r);
+
+                reply = dbus_message_new_method_return(message);
+                if (!reply)
+                        goto oom;
+
         } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSession")) {
                 const char *name;
                 Session *session;
@@ -1941,6 +2418,29 @@ static DBusHandlerResult manager_message_handler(
                 if (!reply)
                         goto oom;
 
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateMachine")) {
+                const char *name;
+                Machine *machine;
+
+                if (!dbus_message_get_args(
+                                    message,
+                                    &error,
+                                    DBUS_TYPE_STRING, &name,
+                                    DBUS_TYPE_INVALID))
+                        return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+                machine = hashmap_get(m->machines, name);
+                if (!machine)
+                        return bus_send_error_reply(connection, message, &error, -ENOENT);
+
+                r = machine_stop(machine);
+                if (r < 0)
+                        return bus_send_error_reply(connection, message, NULL, r);
+
+                reply = dbus_message_new_method_return(message);
+                if (!reply)
+                        goto oom;
+
         } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "SetUserLinger")) {
                 uint32_t uid;
                 struct passwd *pw;
@@ -2090,7 +2590,7 @@ static DBusHandlerResult manager_message_handler(
                                 "org.freedesktop.login1.suspend",
                                 "org.freedesktop.login1.suspend-multiple-sessions",
                                 "org.freedesktop.login1.suspend-ignore-inhibit",
-                                "mem",
+                                "suspend",
                                 &error, &reply);
                 if (r < 0)
                         return bus_send_error_reply(connection, message, &error, r);
@@ -2102,7 +2602,20 @@ static DBusHandlerResult manager_message_handler(
                                 "org.freedesktop.login1.hibernate",
                                 "org.freedesktop.login1.hibernate-multiple-sessions",
                                 "org.freedesktop.login1.hibernate-ignore-inhibit",
-                                "disk",
+                                "hibernate",
+                                &error, &reply);
+                if (r < 0)
+                        return bus_send_error_reply(connection, message, &error, r);
+
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "HybridSleep")) {
+                r = bus_manager_do_shutdown_or_sleep(
+                                m, connection, message,
+                                SPECIAL_HYBRID_SLEEP_TARGET,
+                                INHIBIT_SLEEP,
+                                "org.freedesktop.login1.hibernate",
+                                "org.freedesktop.login1.hibernate-multiple-sessions",
+                                "org.freedesktop.login1.hibernate-ignore-inhibit",
+                                "hybrid-sleep",
                                 &error, &reply);
                 if (r < 0)
                         return bus_send_error_reply(connection, message, &error, r);
@@ -2138,7 +2651,7 @@ static DBusHandlerResult manager_message_handler(
                                 "org.freedesktop.login1.suspend",
                                 "org.freedesktop.login1.suspend-multiple-sessions",
                                 "org.freedesktop.login1.suspend-ignore-inhibit",
-                                "mem",
+                                "suspend",
                                 &error, &reply);
                 if (r < 0)
                         return bus_send_error_reply(connection, message, &error, r);
@@ -2150,7 +2663,19 @@ static DBusHandlerResult manager_message_handler(
                                 "org.freedesktop.login1.hibernate",
                                 "org.freedesktop.login1.hibernate-multiple-sessions",
                                 "org.freedesktop.login1.hibernate-ignore-inhibit",
-                                "disk",
+                                "hibernate",
+                                &error, &reply);
+                if (r < 0)
+                        return bus_send_error_reply(connection, message, &error, r);
+
+        } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanHybridSleep")) {
+                r = bus_manager_can_shutdown_or_sleep(
+                                m, connection, message,
+                                INHIBIT_SLEEP,
+                                "org.freedesktop.login1.hibernate",
+                                "org.freedesktop.login1.hibernate-multiple-sessions",
+                                "org.freedesktop.login1.hibernate-ignore-inhibit",
+                                "hybrid-sleep",
                                 &error, &reply);
                 if (r < 0)
                         return bus_send_error_reply(connection, message, &error, r);
@@ -2227,18 +2752,13 @@ static DBusHandlerResult manager_message_handler(
         }
 
         if (reply) {
-                if (!dbus_connection_send(connection, reply, NULL))
-                        goto oom;
-
-                dbus_message_unref(reply);
+                if (!bus_maybe_send_reply(connection, message, reply))
+                                goto oom;
         }
 
         return DBUS_HANDLER_RESULT_HANDLED;
 
 oom:
-        if (reply)
-                dbus_message_unref(reply);
-
         dbus_error_free(&error);
 
         return DBUS_HANDLER_RESULT_NEED_MEMORY;
@@ -2271,6 +2791,30 @@ DBusHandlerResult bus_message_filter(
                         log_error("Failed to parse Released message: %s", bus_error_message(&error));
                 else
                         manager_cgroup_notify_empty(m, cgroup);
+
+        } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
+                uint32_t id;
+                const char *path, *result, *unit;
+
+                if (!dbus_message_get_args(message, &error,
+                                           DBUS_TYPE_UINT32, &id,
+                                           DBUS_TYPE_OBJECT_PATH, &path,
+                                           DBUS_TYPE_STRING, &unit,
+                                           DBUS_TYPE_STRING, &result,
+                                           DBUS_TYPE_INVALID))
+                        log_error("Failed to parse JobRemoved message: %s", bus_error_message(&error));
+
+                else if (m->action_job && streq(m->action_job, path)) {
+                        log_info("Operation finished.");
+
+                        /* Tell people that they now may take a lock again */
+                        send_prepare_for(m, m->action_what, false);
+
+                        free(m->action_job);
+                        m->action_job = NULL;
+                        m->action_unit = NULL;
+                        m->action_what = 0;
+                }
         }
 
         dbus_error_free(&error);
@@ -2279,62 +2823,51 @@ DBusHandlerResult bus_message_filter(
 }
 
 int manager_send_changed(Manager *manager, const char *properties) {
-        DBusMessage *m;
-        int r = -ENOMEM;
+        _cleanup_dbus_message_unref_ DBusMessage *m = NULL;
 
         assert(manager);
 
-        m = bus_properties_changed_new("/org/freedesktop/login1", "org.freedesktop.login1.Manager", properties);
+        m = bus_properties_changed_new("/org/freedesktop/login1",
+                                       "org.freedesktop.login1.Manager",
+                                       properties);
         if (!m)
-                goto finish;
+                return -ENOMEM;
 
         if (!dbus_connection_send(manager->bus, m, NULL))
-                goto finish;
-
-        r = 0;
-
-finish:
-        if (m)
-                dbus_message_unref(m);
+                return -ENOMEM;
 
-        return r;
+        return 0;
 }
 
 int manager_dispatch_delayed(Manager *manager) {
-        const char *unit_name;
         DBusError error;
-        bool delayed;
         int r;
 
         assert(manager);
 
-        if (!manager->delayed_unit)
+        if (manager->action_what == 0 || manager->action_job)
                 return 0;
 
         /* Continue delay? */
-        delayed =
-                manager->delayed_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC) &&
-                manager_is_inhibited(manager, manager->delayed_what, INHIBIT_DELAY, NULL, false, false, 0);
-        if (delayed)
-                return 0;
+        if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0)) {
 
-        bus_manager_log_shutdown(manager, manager->delayed_what, manager->delayed_unit);
+                if (manager->action_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC))
+                        return 0;
 
-        /* Reset delay data */
-        unit_name = manager->delayed_unit;
-        manager->delayed_unit = NULL;
+                log_info("Delay lock is active but inhibitor timeout is reached.");
+        }
 
-        /* Actually do the shutdown */
+        /* Actually do the operation */
         dbus_error_init(&error);
-        r = send_start_unit(manager->bus, unit_name, &error);
+        r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);
         if (r < 0) {
-                log_warning("Failed to send delayed message: %s", bus_error_message_or_strerror(&error, -r));
+                log_warning("Failed to send delayed message: %s", bus_error(&error, r));
                 dbus_error_free(&error);
+
+                manager->action_unit = NULL;
+                manager->action_what = 0;
                 return r;
         }
 
-        /* Tell people about it */
-        send_prepare_for(manager, manager->delayed_what, false);
-
         return 1;
 }