Adding upstream version 252.22.upstream/252.22

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 951 insertions, 0 deletions

diff --git a/src/login/logind-session-dbus.c b/src/login/logind-session-dbus.c
new file mode 100644
index 0000000..b45eb22
--- /dev/null
+++ b/src/login/logind-session-dbus.c
@@ -0,0 +1,951 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <errno.h>
+
+#include "alloc-util.h"
+#include "bus-common-errors.h"
+#include "bus-get-properties.h"
+#include "bus-label.h"
+#include "bus-polkit.h"
+#include "bus-util.h"
+#include "devnum-util.h"
+#include "fd-util.h"
+#include "logind-brightness.h"
+#include "logind-dbus.h"
+#include "logind-polkit.h"
+#include "logind-seat-dbus.h"
+#include "logind-session-dbus.h"
+#include "logind-session-device.h"
+#include "logind-session.h"
+#include "logind-user-dbus.h"
+#include "logind.h"
+#include "missing_capability.h"
+#include "path-util.h"
+#include "signal-util.h"
+#include "strv.h"
+#include "user-util.h"
+#include "util.h"
+
+static int property_get_user(
+                sd_bus *bus,
+                const char *path,
+                const char *interface,
+                const char *property,
+                sd_bus_message *reply,
+                void *userdata,
+                sd_bus_error *error) {
+
+        _cleanup_free_ char *p = NULL;
+        Session *s = ASSERT_PTR(userdata);
+
+        assert(bus);
+        assert(reply);
+
+        p = user_bus_path(s->user);
+        if (!p)
+                return -ENOMEM;
+
+        return sd_bus_message_append(reply, "(uo)", (uint32_t) s->user->user_record->uid, p);
+}
+
+static int property_get_name(
+                sd_bus *bus,
+                const char *path,
+                const char *interface,
+                const char *property,
+                sd_bus_message *reply,
+                void *userdata,
+                sd_bus_error *error) {
+
+        Session *s = ASSERT_PTR(userdata);
+
+        assert(bus);
+        assert(reply);
+
+        return sd_bus_message_append(reply, "s", s->user->user_record->user_name);
+}
+
+static int property_get_seat(
+                sd_bus *bus,
+                const char *path,
+                const char *interface,
+                const char *property,
+                sd_bus_message *reply,
+                void *userdata,
+                sd_bus_error *error) {
+
+        _cleanup_free_ char *p = NULL;
+        Session *s = ASSERT_PTR(userdata);
+
+        assert(bus);
+        assert(reply);
+
+        p = s->seat ? seat_bus_path(s->seat) : strdup("/");
+        if (!p)
+                return -ENOMEM;
+
+        return sd_bus_message_append(reply, "(so)", s->seat ? s->seat->id : "", p);
+}
+
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, session_type, SessionType);
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, session_class, SessionClass);
+static BUS_DEFINE_PROPERTY_GET(property_get_active, "b", Session, session_is_active);
+static BUS_DEFINE_PROPERTY_GET2(property_get_state, "s", Session, session_get_state, session_state_to_string);
+
+static int property_get_idle_hint(
+                sd_bus *bus,
+                const char *path,
+                const char *interface,
+                const char *property,
+                sd_bus_message *reply,
+                void *userdata,
+                sd_bus_error *error) {
+
+        Session *s = ASSERT_PTR(userdata);
+
+        assert(bus);
+        assert(reply);
+
+        return sd_bus_message_append(reply, "b", session_get_idle_hint(s, NULL) > 0);
+}
+
+static int property_get_idle_since_hint(
+                sd_bus *bus,
+                const char *path,
+                const char *interface,
+                const char *property,
+                sd_bus_message *reply,
+                void *userdata,
+                sd_bus_error *error) {
+
+        Session *s = ASSERT_PTR(userdata);
+        dual_timestamp t = DUAL_TIMESTAMP_NULL;
+        uint64_t u;
+        int r;
+
+        assert(bus);
+        assert(reply);
+
+        r = session_get_idle_hint(s, &t);
+        if (r < 0)
+                return r;
+
+        u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
+
+        return sd_bus_message_append(reply, "t", u);
+}
+
+static int property_get_locked_hint(
+                sd_bus *bus,
+                const char *path,
+                const char *interface,
+                const char *property,
+                sd_bus_message *reply,
+                void *userdata,
+                sd_bus_error *error) {
+
+        Session *s = ASSERT_PTR(userdata);
+
+        assert(bus);
+        assert(reply);
+
+        return sd_bus_message_append(reply, "b", session_get_locked_hint(s) > 0);
+}
+
+int bus_session_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Session *s = ASSERT_PTR(userdata);
+        int r;
+
+        assert(message);
+
+        r = bus_verify_polkit_async(
+                        message,
+                        CAP_KILL,
+                        "org.freedesktop.login1.manage",
+                        NULL,
+                        false,
+                        s->user->user_record->uid,
+                        &s->manager->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
+        r = session_stop(s, /* force = */ true);
+        if (r < 0)
+                return r;
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+int bus_session_method_activate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Session *s = ASSERT_PTR(userdata);
+        int r;
+
+        assert(message);
+
+        r = check_polkit_chvt(message, s->manager, error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
+        r = session_activate(s);
+        if (r < 0)
+                return r;
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+int bus_session_method_lock(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Session *s = ASSERT_PTR(userdata);
+        int r;
+
+        assert(message);
+
+        r = bus_verify_polkit_async(
+                        message,
+                        CAP_SYS_ADMIN,
+                        "org.freedesktop.login1.lock-sessions",
+                        NULL,
+                        false,
+                        s->user->user_record->uid,
+                        &s->manager->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
+        r = session_send_lock(s, strstr(sd_bus_message_get_member(message), "Lock"));
+        if (r < 0)
+                return r;
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+static int method_set_idle_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+        Session *s = ASSERT_PTR(userdata);
+        uid_t uid;
+        int r, b;
+
+        assert(message);
+
+        r = sd_bus_message_read(message, "b", &b);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_creds_get_euid(creds, &uid);
+        if (r < 0)
+                return r;
+
+        if (uid != 0 && uid != s->user->user_record->uid)
+                return sd_bus_error_set(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set idle hint");
+
+        r = session_set_idle_hint(s, b);
+        if (r == -ENOTTY)
+                return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Idle hint control is not supported on non-graphical sessions.");
+        if (r < 0)
+                return r;
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+static int method_set_locked_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+        Session *s = ASSERT_PTR(userdata);
+        uid_t uid;
+        int r, b;
+
+        assert(message);
+
+        r = sd_bus_message_read(message, "b", &b);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_creds_get_euid(creds, &uid);
+        if (r < 0)
+                return r;
+
+        if (uid != 0 && uid != s->user->user_record->uid)
+                return sd_bus_error_set(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set locked hint");
+
+        session_set_locked_hint(s, b);
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+int bus_session_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Session *s = ASSERT_PTR(userdata);
+        const char *swho;
+        int32_t signo;
+        KillWho who;
+        int r;
+
+        assert(message);
+
+        r = sd_bus_message_read(message, "si", &swho, &signo);
+        if (r < 0)
+                return r;
+
+        if (isempty(swho))
+                who = KILL_ALL;
+        else {
+                who = kill_who_from_string(swho);
+                if (who < 0)
+                        return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho);
+        }
+
+        if (!SIGNAL_VALID(signo))
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
+
+        r = bus_verify_polkit_async(
+                        message,
+                        CAP_KILL,
+                        "org.freedesktop.login1.manage",
+                        NULL,
+                        false,
+                        s->user->user_record->uid,
+                        &s->manager->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
+        r = session_kill(s, who, signo);
+        if (r < 0)
+                return r;
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+static int method_take_control(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+        Session *s = ASSERT_PTR(userdata);
+        int r, force;
+        uid_t uid;
+
+        assert(message);
+
+        r = sd_bus_message_read(message, "b", &force);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_creds_get_euid(creds, &uid);
+        if (r < 0)
+                return r;
+
+        if (uid != 0 && (force || uid != s->user->user_record->uid))
+                return sd_bus_error_set(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may take control");
+
+        r = session_set_controller(s, sd_bus_message_get_sender(message), force, true);
+        if (r < 0)
+                return r;
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+static int method_release_control(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Session *s = ASSERT_PTR(userdata);
+
+        assert(message);
+
+        if (!session_is_controller(s, sd_bus_message_get_sender(message)))
+                return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
+
+        session_drop_controller(s);
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+static int method_set_type(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Session *s = ASSERT_PTR(userdata);
+        const char *t;
+        SessionType type;
+        int r;
+
+        assert(message);
+
+        r = sd_bus_message_read(message, "s", &t);
+        if (r < 0)
+                return r;
+
+        type = session_type_from_string(t);
+        if (type < 0)
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
+                                         "Invalid session type '%s'", t);
+
+        if (!session_is_controller(s, sd_bus_message_get_sender(message)))
+                return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You must be in control of this session to set type");
+
+        session_set_type(s, type);
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+static int method_set_display(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Session *s = ASSERT_PTR(userdata);
+        const char *display;
+        int r;
+
+        assert(message);
+
+        r = sd_bus_message_read(message, "s", &display);
+        if (r < 0)
+                return r;
+
+        if (!session_is_controller(s, sd_bus_message_get_sender(message)))
+                return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You must be in control of this session to set display");
+
+        if (!SESSION_TYPE_IS_GRAPHICAL(s->type))
+                return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Setting display is only supported for graphical sessions");
+
+        r = session_set_display(s, display);
+        if (r < 0)
+                return r;
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+static int method_take_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Session *s = ASSERT_PTR(userdata);
+        uint32_t major, minor;
+        SessionDevice *sd;
+        dev_t dev;
+        int r;
+
+        assert(message);
+
+        r = sd_bus_message_read(message, "uu", &major, &minor);
+        if (r < 0)
+                return r;
+
+        if (!DEVICE_MAJOR_VALID(major) || !DEVICE_MINOR_VALID(minor))
+                return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Device major/minor is not valid.");
+
+        if (!session_is_controller(s, sd_bus_message_get_sender(message)))
+                return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
+
+        dev = makedev(major, minor);
+        sd = hashmap_get(s->devices, &dev);
+        if (sd)
+                /* We don't allow retrieving a device multiple times.
+                 * The related ReleaseDevice call is not ref-counted.
+                 * The caller should use dup() if it requires more
+                 * than one fd (it would be functionally
+                 * equivalent). */
+                return sd_bus_error_set(error, BUS_ERROR_DEVICE_IS_TAKEN, "Device already taken");
+
+        r = session_device_new(s, dev, true, &sd);
+        if (r < 0)
+                return r;
+
+        r = session_device_save(sd);
+        if (r < 0)
+                goto error;
+
+        r = sd_bus_reply_method_return(message, "hb", sd->fd, !sd->active);
+        if (r < 0)
+                goto error;
+
+        session_save(s);
+        return 1;
+
+error:
+        session_device_free(sd);
+        return r;
+}
+
+static int method_release_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Session *s = ASSERT_PTR(userdata);
+        uint32_t major, minor;
+        SessionDevice *sd;
+        dev_t dev;
+        int r;
+
+        assert(message);
+
+        r = sd_bus_message_read(message, "uu", &major, &minor);
+        if (r < 0)
+                return r;
+
+        if (!DEVICE_MAJOR_VALID(major) || !DEVICE_MINOR_VALID(minor))
+                return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Device major/minor is not valid.");
+
+        if (!session_is_controller(s, sd_bus_message_get_sender(message)))
+                return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
+
+        dev = makedev(major, minor);
+        sd = hashmap_get(s->devices, &dev);
+        if (!sd)
+                return sd_bus_error_set(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
+
+        session_device_free(sd);
+        session_save(s);
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+static int method_pause_device_complete(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        Session *s = ASSERT_PTR(userdata);
+        uint32_t major, minor;
+        SessionDevice *sd;
+        dev_t dev;
+        int r;
+
+        assert(message);
+
+        r = sd_bus_message_read(message, "uu", &major, &minor);
+        if (r < 0)
+                return r;
+
+        if (!DEVICE_MAJOR_VALID(major) || !DEVICE_MINOR_VALID(minor))
+                return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Device major/minor is not valid.");
+
+        if (!session_is_controller(s, sd_bus_message_get_sender(message)))
+                return sd_bus_error_set(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
+
+        dev = makedev(major, minor);
+        sd = hashmap_get(s->devices, &dev);
+        if (!sd)
+                return sd_bus_error_set(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
+
+        session_device_complete_pause(sd);
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
+static int method_set_brightness(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+        _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+        _cleanup_(sd_device_unrefp) sd_device *d = NULL;
+        const char *subsystem, *name, *seat;
+        Session *s = ASSERT_PTR(userdata);
+        uint32_t brightness;
+        uid_t uid;
+        int r;
+
+        assert(message);
+
+        r = sd_bus_message_read(message, "ssu", &subsystem, &name, &brightness);
+        if (r < 0)
+                return r;
+
+        if (!STR_IN_SET(subsystem, "backlight", "leds"))
+                return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Subsystem type %s not supported, must be one of 'backlight' or 'leds'.", subsystem);
+        if (!filename_is_valid(name))
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Not a valid device name %s, refusing.", name);
+
+        if (!s->seat)
+                return sd_bus_error_set(error, BUS_ERROR_NOT_YOUR_DEVICE, "Your session has no seat, refusing.");
+        if (s->seat->active != s)
+                return sd_bus_error_set(error, BUS_ERROR_NOT_YOUR_DEVICE, "Session is not in foreground, refusing.");
+
+        r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_creds_get_euid(creds, &uid);
+        if (r < 0)
+                return r;
+
+        if (uid != 0 && uid != s->user->user_record->uid)
+                return sd_bus_error_set(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may change brightness.");
+
+        r = sd_device_new_from_subsystem_sysname(&d, subsystem, name);
+        if (r < 0)
+                return sd_bus_error_set_errnof(error, r, "Failed to open device %s:%s: %m", subsystem, name);
+
+        if (sd_device_get_property_value(d, "ID_SEAT", &seat) >= 0 && !streq_ptr(seat, s->seat->id))
+                return sd_bus_error_setf(error, BUS_ERROR_NOT_YOUR_DEVICE, "Device %s:%s does not belong to your seat %s, refusing.", subsystem, name, s->seat->id);
+
+        r = manager_write_brightness(s->manager, d, brightness, message);
+        if (r < 0)
+                return r;
+
+        return 1;
+}
+
+static int session_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
+        _cleanup_free_ char *e = NULL;
+        sd_bus_message *message;
+        Manager *m = ASSERT_PTR(userdata);
+        Session *session;
+        const char *p;
+        int r;
+
+        assert(bus);
+        assert(path);
+        assert(interface);
+        assert(found);
+
+        p = startswith(path, "/org/freedesktop/login1/session/");
+        if (!p)
+                return 0;
+
+        e = bus_label_unescape(p);
+        if (!e)
+                return -ENOMEM;
+
+        message = sd_bus_get_current_message(bus);
+
+        r = manager_get_session_from_creds(m, message, e, error, &session);
+        if (r == -ENXIO) {
+                sd_bus_error_free(error);
+                return 0;
+        }
+        if (r < 0)
+                return r;
+
+        *found = session;
+        return 1;
+}
+
+char *session_bus_path(Session *s) {
+        _cleanup_free_ char *t = NULL;
+
+        assert(s);
+
+        t = bus_label_escape(s->id);
+        if (!t)
+                return NULL;
+
+        return strjoin("/org/freedesktop/login1/session/", t);
+}
+
+static int session_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
+        _cleanup_strv_free_ char **l = NULL;
+        sd_bus_message *message;
+        Manager *m = userdata;
+        Session *session;
+        int r;
+
+        assert(bus);
+        assert(path);
+        assert(nodes);
+
+        HASHMAP_FOREACH(session, m->sessions) {
+                char *p;
+
+                p = session_bus_path(session);
+                if (!p)
+                        return -ENOMEM;
+
+                r = strv_consume(&l, p);
+                if (r < 0)
+                        return r;
+        }
+
+        message = sd_bus_get_current_message(bus);
+        if (message) {
+                _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+
+                r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
+                if (r >= 0) {
+                        bool may_auto = false;
+                        const char *name;
+
+                        r = sd_bus_creds_get_session(creds, &name);
+                        if (r >= 0) {
+                                session = hashmap_get(m->sessions, name);
+                                if (session) {
+                                        r = strv_extend(&l, "/org/freedesktop/login1/session/self");
+                                        if (r < 0)
+                                                return r;
+
+                                        may_auto = true;
+                                }
+                        }
+
+                        if (!may_auto) {
+                                uid_t uid;
+
+                                r = sd_bus_creds_get_owner_uid(creds, &uid);
+                                if (r >= 0) {
+                                        User *user;
+
+                                        user = hashmap_get(m->users, UID_TO_PTR(uid));
+                                        may_auto = user && user->display;
+                                }
+                        }
+
+                        if (may_auto) {
+                                r = strv_extend(&l, "/org/freedesktop/login1/session/auto");
+                                if (r < 0)
+                                        return r;
+                        }
+                }
+        }
+
+        *nodes = TAKE_PTR(l);
+        return 1;
+}
+
+int session_send_signal(Session *s, bool new_session) {
+        _cleanup_free_ char *p = NULL;
+
+        assert(s);
+
+        p = session_bus_path(s);
+        if (!p)
+                return -ENOMEM;
+
+        return sd_bus_emit_signal(
+                        s->manager->bus,
+                        "/org/freedesktop/login1",
+                        "org.freedesktop.login1.Manager",
+                        new_session ? "SessionNew" : "SessionRemoved",
+                        "so", s->id, p);
+}
+
+int session_send_changed(Session *s, const char *properties, ...) {
+        _cleanup_free_ char *p = NULL;
+        char **l;
+
+        assert(s);
+
+        if (!s->started)
+                return 0;
+
+        p = session_bus_path(s);
+        if (!p)
+                return -ENOMEM;
+
+        l = strv_from_stdarg_alloca(properties);
+
+        return sd_bus_emit_properties_changed_strv(s->manager->bus, p, "org.freedesktop.login1.Session", l);
+}
+
+int session_send_lock(Session *s, bool lock) {
+        _cleanup_free_ char *p = NULL;
+
+        assert(s);
+
+        p = session_bus_path(s);
+        if (!p)
+                return -ENOMEM;
+
+        return sd_bus_emit_signal(
+                        s->manager->bus,
+                        p,
+                        "org.freedesktop.login1.Session",
+                        lock ? "Lock" : "Unlock",
+                        NULL);
+}
+
+int session_send_lock_all(Manager *m, bool lock) {
+        Session *session;
+        int r = 0;
+
+        assert(m);
+
+        HASHMAP_FOREACH(session, m->sessions) {
+                int k;
+
+                k = session_send_lock(session, lock);
+                if (k < 0)
+                        r = k;
+        }
+
+        return r;
+}
+
+static bool session_ready(Session *s) {
+        assert(s);
+
+        /* Returns true when the session is ready, i.e. all jobs we enqueued for it are done (regardless if successful or not) */
+
+        return !s->scope_job &&
+                !s->user->service_job;
+}
+
+int session_send_create_reply(Session *s, sd_bus_error *error) {
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *c = NULL;
+        _cleanup_close_ int fifo_fd = -1;
+        _cleanup_free_ char *p = NULL;
+
+        assert(s);
+
+        /* This is called after the session scope and the user service were successfully created, and finishes where
+         * bus_manager_create_session() left off. */
+
+        if (!s->create_message)
+                return 0;
+
+        if (!sd_bus_error_is_set(error) && !session_ready(s))
+                return 0;
+
+        c = TAKE_PTR(s->create_message);
+        if (error)
+                return sd_bus_reply_method_error(c, error);
+
+        fifo_fd = session_create_fifo(s);
+        if (fifo_fd < 0)
+                return fifo_fd;
+
+        /* Update the session state file before we notify the client about the result. */
+        session_save(s);
+
+        p = session_bus_path(s);
+        if (!p)
+                return -ENOMEM;
+
+        log_debug("Sending reply about created session: "
+                  "id=%s object_path=%s uid=%u runtime_path=%s "
+                  "session_fd=%d seat=%s vtnr=%u",
+                  s->id,
+                  p,
+                  (uint32_t) s->user->user_record->uid,
+                  s->user->runtime_path,
+                  fifo_fd,
+                  s->seat ? s->seat->id : "",
+                  (uint32_t) s->vtnr);
+
+        return sd_bus_reply_method_return(
+                        c, "soshusub",
+                        s->id,
+                        p,
+                        s->user->runtime_path,
+                        fifo_fd,
+                        (uint32_t) s->user->user_record->uid,
+                        s->seat ? s->seat->id : "",
+                        (uint32_t) s->vtnr,
+                        false);
+}
+
+static const sd_bus_vtable session_vtable[] = {
+        SD_BUS_VTABLE_START(0),
+
+        SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Session, id), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("User", "(uo)", property_get_user, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Name", "s", property_get_name, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+        BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Session, timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("VTNr", "u", NULL, offsetof(Session, vtnr), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Seat", "(so)", property_get_seat, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("TTY", "s", NULL, offsetof(Session, tty), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Display", "s", NULL, offsetof(Session, display), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+        SD_BUS_PROPERTY("Remote", "b", bus_property_get_bool, offsetof(Session, remote), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("RemoteHost", "s", NULL, offsetof(Session, remote_host), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("RemoteUser", "s", NULL, offsetof(Session, remote_user), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Session, service), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Desktop", "s", NULL, offsetof(Session, desktop), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Session, scope), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Leader", "u", bus_property_get_pid, offsetof(Session, leader), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Audit", "u", NULL, offsetof(Session, audit_id), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Session, type), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+        SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Session, class), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("Active", "b", property_get_active, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+        SD_BUS_PROPERTY("State", "s", property_get_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+        SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+        SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+        SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+        SD_BUS_PROPERTY("LockedHint", "b", property_get_locked_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+
+        SD_BUS_METHOD("Terminate",
+                      NULL,
+                      NULL,
+                      bus_session_method_terminate,
+                      SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("Activate",
+                      NULL,
+                      NULL,
+                      bus_session_method_activate,
+                      SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("Lock",
+                      NULL,
+                      NULL,
+                      bus_session_method_lock,
+                      SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("Unlock",
+                      NULL,
+                      NULL,
+                      bus_session_method_lock,
+                      SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_ARGS("SetIdleHint",
+                                SD_BUS_ARGS("b", idle),
+                                SD_BUS_NO_RESULT,
+                                method_set_idle_hint,
+                                SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_ARGS("SetLockedHint",
+                                SD_BUS_ARGS("b", locked),
+                                SD_BUS_NO_RESULT,
+                                method_set_locked_hint,
+                                SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_ARGS("Kill",
+                                SD_BUS_ARGS("s", who, "i", signal_number),
+                                SD_BUS_NO_RESULT,
+                                bus_session_method_kill,
+                                SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_ARGS("TakeControl",
+                                SD_BUS_ARGS("b", force),
+                                SD_BUS_NO_RESULT,
+                                method_take_control,
+                                SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("ReleaseControl",
+                      NULL,
+                      NULL,
+                      method_release_control,
+                      SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_ARGS("SetType",
+                                SD_BUS_ARGS("s", type),
+                                SD_BUS_NO_RESULT,
+                                method_set_type,
+                                SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_ARGS("SetDisplay",
+                                SD_BUS_ARGS("s", display),
+                                SD_BUS_NO_RESULT,
+                                method_set_display,
+                                SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_ARGS("TakeDevice",
+                                SD_BUS_ARGS("u", major, "u", minor),
+                                SD_BUS_RESULT("h", fd, "b", inactive),
+                                method_take_device,
+                                SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_ARGS("ReleaseDevice",
+                                SD_BUS_ARGS("u", major, "u", minor),
+                                SD_BUS_NO_RESULT,
+                                method_release_device,
+                                SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_ARGS("PauseDeviceComplete",
+                                SD_BUS_ARGS("u", major, "u", minor),
+                                SD_BUS_NO_RESULT,
+                                method_pause_device_complete,
+                                SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD_WITH_ARGS("SetBrightness",
+                                SD_BUS_ARGS("s", subsystem, "s", name, "u", brightness),
+                                SD_BUS_NO_RESULT,
+                                method_set_brightness,
+                                SD_BUS_VTABLE_UNPRIVILEGED),
+
+        SD_BUS_SIGNAL_WITH_ARGS("PauseDevice",
+                                SD_BUS_ARGS("u", major, "u", minor, "s", type),
+                                0),
+        SD_BUS_SIGNAL_WITH_ARGS("ResumeDevice",
+                                SD_BUS_ARGS("u", major, "u", minor, "h", fd),
+                                0),
+        SD_BUS_SIGNAL("Lock", NULL, 0),
+        SD_BUS_SIGNAL("Unlock", NULL, 0),
+
+        SD_BUS_VTABLE_END
+};
+
+const BusObjectImplementation session_object = {
+        "/org/freedesktop/login1/session",
+        "org.freedesktop.login1.Session",
+        .fallback_vtables = BUS_FALLBACK_VTABLES({session_vtable, session_object_find}),
+        .node_enumerator = session_node_enumerator,
+};