/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright (C) 2011 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Matthias Clasen
*/
#include "config.h"
#include "gsm-systemd.h"
#ifdef HAVE_SYSTEMD
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <pwd.h>
#include <systemd/sd-login.h>
#include <glib.h>
#include <glib-object.h>
#include <glib/gi18n.h>
#include <gio/gio.h>
#include <gio/gunixfdlist.h>
#include "gsm-system.h"
#define SD_NAME "org.freedesktop.login1"
#define SD_PATH "/org/freedesktop/login1"
#define SD_INTERFACE "org.freedesktop.login1.Manager"
#define SD_SEAT_INTERFACE "org.freedesktop.login1.Seat"
#define SD_SESSION_INTERFACE "org.freedesktop.login1.Session"
struct _GsmSystemdPrivate
{
GSource *sd_source;
GDBusProxy *sd_proxy;
char *session_id;
gchar *session_path;
GSList *inhibitors;
gint inhibit_fd;
gboolean is_active;
gint delay_inhibit_fd;
gboolean prepare_for_shutdown_expected;
};
enum {
PROP_0,
PROP_ACTIVE
};
static void gsm_systemd_system_init (GsmSystemInterface *iface);
G_DEFINE_TYPE_WITH_CODE (GsmSystemd, gsm_systemd, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GSM_TYPE_SYSTEM,
gsm_systemd_system_init))
static void
drop_system_inhibitor (GsmSystemd *manager)
{
if (manager->priv->inhibit_fd != -1) {
g_debug ("GsmSystemd: Dropping system inhibitor");
close (manager->priv->inhibit_fd);
manager->priv->inhibit_fd = -1;
}
}
static void
drop_delay_inhibitor (GsmSystemd *manager)
{
if (manager->priv->delay_inhibit_fd != -1) {
g_debug ("GsmSystemd: Dropping delay inhibitor");
close (manager->priv->delay_inhibit_fd);
manager->priv->delay_inhibit_fd = -1;
}
}
static void
gsm_systemd_finalize (GObject *object)
{
GsmSystemd *systemd = GSM_SYSTEMD (object);
g_clear_object (&systemd->priv->sd_proxy);
free (systemd->priv->session_id);
g_free (systemd->priv->session_path);
if (systemd->priv->sd_source) {
g_source_destroy (systemd->priv->sd_source);
}
if (systemd->priv->inhibitors != NULL) {
g_slist_free_full (systemd->priv->inhibitors, g_free);
}
drop_system_inhibitor (systemd);
drop_delay_inhibitor (systemd);
G_OBJECT_CLASS (gsm_systemd_parent_class)->finalize (object);
}
static void
gsm_systemd_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GsmSystemd *self = GSM_SYSTEMD (object);
switch (prop_id) {
case PROP_ACTIVE:
self->priv->is_active = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gsm_systemd_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GsmSystemd *self = GSM_SYSTEMD (object);
switch (prop_id) {
case PROP_ACTIVE:
g_value_set_boolean (value, self->priv->is_active);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gsm_systemd_class_init (GsmSystemdClass *manager_class)
{
GObjectClass *object_class;
object_class = G_OBJECT_CLASS (manager_class);
object_class->get_property = gsm_systemd_get_property;
object_class->set_property = gsm_systemd_set_property;
object_class->finalize = gsm_systemd_finalize;
g_object_class_override_property (object_class, PROP_ACTIVE, "active");
g_type_class_add_private (manager_class, sizeof (GsmSystemdPrivate));
}
typedef struct
{
GSource source;
GPollFD pollfd;
sd_login_monitor *monitor;
} SdSource;
static gboolean
sd_source_prepare (GSource *source,
gint *timeout)
{
*timeout = -1;
return FALSE;
}
static gboolean
sd_source_check (GSource *source)
{
SdSource *sd_source = (SdSource *)source;
return sd_source->pollfd.revents != 0;
}
static gboolean
sd_source_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data)
{
SdSource *sd_source = (SdSource *)source;
gboolean ret;
g_warn_if_fail (callback != NULL);
ret = (*callback) (user_data);
sd_login_monitor_flush (sd_source->monitor);
return ret;
}
static void
sd_source_finalize (GSource *source)
{
SdSource *sd_source = (SdSource*)source;
sd_login_monitor_unref (sd_source->monitor);
}
static GSourceFuncs sd_source_funcs = {
sd_source_prepare,
sd_source_check,
sd_source_dispatch,
sd_source_finalize
};
static GSource *
sd_source_new (void)
{
GSource *source;
SdSource *sd_source;
int ret;
source = g_source_new (&sd_source_funcs, sizeof (SdSource));
sd_source = (SdSource *)source;
if ((ret = sd_login_monitor_new ("session", &sd_source->monitor)) < 0) {
g_warning ("Error getting login monitor: %d", ret);
} else {
sd_source->pollfd.fd = sd_login_monitor_get_fd (sd_source->monitor);
sd_source->pollfd.events = G_IO_IN;
g_source_add_poll (source, &sd_source->pollfd);
}
return source;
}
static gboolean
on_sd_source_changed (gpointer user_data)
{
GsmSystemd *self = user_data;
int active_r;
gboolean active;
active_r = sd_session_is_active (self->priv->session_id);
if (active_r < 0)
active = FALSE;
else
active = active_r;
if (active != self->priv->is_active) {
self->priv->is_active = active;
g_object_notify (G_OBJECT (self), "active");
}
return TRUE;
}
static void sd_proxy_signal_cb (GDBusProxy *proxy,
const gchar *sender_name,
const gchar *signal_name,
GVariant *parameters,
gpointer user_data);
static void
gsm_systemd_init (GsmSystemd *manager)
{
GError *error = NULL;
GDBusConnection *bus;
GVariant *res;
manager->priv = G_TYPE_INSTANCE_GET_PRIVATE (manager,
GSM_TYPE_SYSTEMD,
GsmSystemdPrivate);
manager->priv->inhibit_fd = -1;
manager->priv->delay_inhibit_fd = -1;
bus = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, &error);
if (bus == NULL)
g_error ("Failed to connect to system bus: %s",
error->message);
manager->priv->sd_proxy =
g_dbus_proxy_new_sync (bus,
0,
NULL,
SD_NAME,
SD_PATH,
SD_INTERFACE,
NULL,
&error);
if (manager->priv->sd_proxy == NULL) {
g_warning ("Failed to connect to systemd: %s",
error->message);
g_clear_error (&error);
}
g_signal_connect (manager->priv->sd_proxy, "g-signal",
G_CALLBACK (sd_proxy_signal_cb), manager);
sd_pid_get_session (getpid (), &manager->priv->session_id);
if (manager->priv->session_id == NULL) {
g_warning ("Could not get session id for session. Check that logind is "
"properly installed and pam_systemd is getting used at login.");
return;
}
res = g_dbus_proxy_call_sync (manager->priv->sd_proxy,
"GetSession",
g_variant_new ("(s)", manager->priv->session_id),
0,
G_MAXINT,
NULL,
&error);
if (res == NULL) {
g_warning ("Could not get session id for session. Check that logind is "
"properly installed and pam_systemd is getting used at login: %s",
error->message);
g_error_free (error);
return;
}
g_variant_get (res, "(o)", &manager->priv->session_path);
g_variant_unref (res);
manager->priv->sd_source = sd_source_new ();
g_source_set_callback (manager->priv->sd_source, on_sd_source_changed, manager, NULL);
g_source_attach (manager->priv->sd_source, NULL);
on_sd_source_changed (manager);
g_object_unref (bus);
}
static void
emit_restart_complete (GsmSystemd *manager,
GError *error)
{
GError *call_error;
call_error = NULL;
if (error != NULL) {
call_error = g_error_new_literal (GSM_SYSTEM_ERROR,
GSM_SYSTEM_ERROR_RESTARTING,
error->message);
}
g_signal_emit_by_name (G_OBJECT (manager),
"request_completed", call_error);
if (call_error != NULL) {
g_error_free (call_error);
}
}
static void
emit_stop_complete (GsmSystemd *manager,
GError *error)
{
GError *call_error;
call_error = NULL;
if (error != NULL) {
call_error = g_error_new_literal (GSM_SYSTEM_ERROR,
GSM_SYSTEM_ERROR_STOPPING,
error->message);
}
g_signal_emit_by_name (G_OBJECT (manager),
"request_completed", call_error);
if (call_error != NULL) {
g_error_free (call_error);
}
}
static void
restart_done (GObject *source,
GAsyncResult *result,
gpointer user_data)
{
GDBusProxy *proxy = G_DBUS_PROXY (source);
GsmSystemd *manager = user_data;
GError *error = NULL;
GVariant *res;
res = g_dbus_proxy_call_finish (proxy, result, &error);
if (!res) {
g_warning ("Unable to restart system: %s", error->message);
emit_restart_complete (manager, error);
g_error_free (error);
} else {
emit_restart_complete (manager, NULL);
g_variant_unref (res);
}
}
static void
gsm_systemd_attempt_restart (GsmSystem *system)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
g_dbus_proxy_call (manager->priv->sd_proxy,
"Reboot",
g_variant_new ("(b)", TRUE),
0,
G_MAXINT,
NULL,
restart_done,
manager);
}
static void
stop_done (GObject *source,
GAsyncResult *result,
gpointer user_data)
{
GDBusProxy *proxy = G_DBUS_PROXY (source);
GsmSystemd *manager = user_data;
GError *error = NULL;
GVariant *res;
res = g_dbus_proxy_call_finish (proxy, result, &error);
if (!res) {
g_warning ("Unable to stop system: %s", error->message);
emit_stop_complete (manager, error);
g_error_free (error);
} else {
emit_stop_complete (manager, NULL);
g_variant_unref (res);
}
}
static void
gsm_systemd_attempt_stop (GsmSystem *system)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
g_dbus_proxy_call (manager->priv->sd_proxy,
"PowerOff",
g_variant_new ("(b)", TRUE),
0,
G_MAXINT,
NULL,
stop_done,
manager);
}
static void
gsm_systemd_set_session_idle (GsmSystem *system,
gboolean is_idle)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
GDBusConnection *bus;
if (manager->priv->session_path == NULL) {
g_warning ("Could not get session path for session. Check that logind is "
"properly installed and pam_systemd is getting used at login.");
return;
}
g_debug ("Updating systemd idle status: %d", is_idle);
bus = g_dbus_proxy_get_connection (manager->priv->sd_proxy);
g_dbus_connection_call (bus,
SD_NAME,
manager->priv->session_path,
SD_SESSION_INTERFACE,
"SetIdleHint",
g_variant_new ("(b)", is_idle),
G_VARIANT_TYPE_BOOLEAN,
0,
G_MAXINT,
NULL, NULL, NULL);
}
static gboolean
gsm_systemd_can_switch_user (GsmSystem *system)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
gchar *seat;
gint ret;
sd_session_get_seat (manager->priv->session_id, &seat);
ret = sd_seat_can_multi_session (seat);
free (seat);
return ret > 0;
}
static gboolean
gsm_systemd_can_restart (GsmSystem *system)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
gchar *rv;
GVariant *res;
gboolean can_restart;
res = g_dbus_proxy_call_sync (manager->priv->sd_proxy,
"CanReboot",
NULL,
0,
G_MAXINT,
NULL,
NULL);
if (!res) {
g_warning ("Calling CanReboot failed. Check that logind is "
"properly installed and pam_systemd is getting used at login.");
return FALSE;
}
g_variant_get (res, "(s)", &rv);
g_variant_unref (res);
can_restart = g_strcmp0 (rv, "yes") == 0 ||
g_strcmp0 (rv, "challenge") == 0;
g_free (rv);
return can_restart;
}
static gboolean
gsm_systemd_can_stop (GsmSystem *system)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
gchar *rv;
GVariant *res;
gboolean can_stop;
res = g_dbus_proxy_call_sync (manager->priv->sd_proxy,
"CanPowerOff",
NULL,
0,
G_MAXINT,
NULL,
NULL);
if (!res) {
g_warning ("Calling CanPowerOff failed. Check that logind is "
"properly installed and pam_systemd is getting used at login.");
return FALSE;
}
g_variant_get (res, "(s)", &rv);
g_variant_unref (res);
can_stop = g_strcmp0 (rv, "yes") == 0 ||
g_strcmp0 (rv, "challenge") == 0;
g_free (rv);
return can_stop;
}
static gboolean
gsm_systemd_is_login_session (GsmSystem *system)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
int res;
gboolean ret;
gchar *session_class = NULL;
ret = FALSE;
if (manager->priv->session_id == NULL) {
return ret;
}
res = sd_session_get_class (manager->priv->session_id, &session_class);
if (res < 0) {
g_warning ("Could not get session class: %s", strerror (-res));
return FALSE;
}
ret = (g_strcmp0 (session_class, "greeter") == 0);
free (session_class);
return ret;
}
static gboolean
gsm_systemd_can_suspend (GsmSystem *system)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
gchar *rv;
GVariant *res;
gboolean can_suspend;
res = g_dbus_proxy_call_sync (manager->priv->sd_proxy,
"CanSuspend",
NULL,
0,
G_MAXINT,
NULL,
NULL);
if (!res) {
g_warning ("Calling CanSuspend failed. Check that logind is "
"properly installed and pam_systemd is getting used at login.");
return FALSE;
}
g_variant_get (res, "(s)", &rv);
g_variant_unref (res);
can_suspend = g_strcmp0 (rv, "yes") == 0 ||
g_strcmp0 (rv, "challenge") == 0;
g_free (rv);
return can_suspend;
}
static gboolean
gsm_systemd_can_hibernate (GsmSystem *system)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
gchar *rv;
GVariant *res;
gboolean can_hibernate;
res = g_dbus_proxy_call_sync (manager->priv->sd_proxy,
"CanHibernate",
NULL,
0,
G_MAXINT,
NULL,
NULL);
if (!res) {
g_warning ("Calling CanHibernate failed. Check that logind is "
"properly installed and pam_systemd is getting used at login.");
return FALSE;
}
g_variant_get (res, "(s)", &rv);
g_variant_unref (res);
can_hibernate = g_strcmp0 (rv, "yes") == 0 ||
g_strcmp0 (rv, "challenge") == 0;
g_free (rv);
return can_hibernate;
}
static void
suspend_done (GObject *source,
GAsyncResult *result,
gpointer user_data)
{
GDBusProxy *proxy = G_DBUS_PROXY (source);
GError *error = NULL;
GVariant *res;
res = g_dbus_proxy_call_finish (proxy, result, &error);
if (!res) {
g_warning ("Unable to suspend system: %s", error->message);
g_error_free (error);
} else {
g_variant_unref (res);
}
}
static void
hibernate_done (GObject *source,
GAsyncResult *result,
gpointer user_data)
{
GDBusProxy *proxy = G_DBUS_PROXY (source);
GError *error = NULL;
GVariant *res;
res = g_dbus_proxy_call_finish (proxy, result, &error);
if (!res) {
g_warning ("Unable to hibernate system: %s", error->message);
g_error_free (error);
} else {
g_variant_unref (res);
}
}
static void
gsm_systemd_suspend (GsmSystem *system)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
g_dbus_proxy_call (manager->priv->sd_proxy,
"Suspend",
g_variant_new ("(b)", TRUE),
0,
G_MAXINT,
NULL,
hibernate_done,
manager);
}
static void
gsm_systemd_hibernate (GsmSystem *system)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
g_dbus_proxy_call (manager->priv->sd_proxy,
"Hibernate",
g_variant_new ("(b)", TRUE),
0,
G_MAXINT,
NULL,
suspend_done,
manager);
}
static void
inhibit_done (GObject *source,
GAsyncResult *result,
gpointer user_data)
{
GDBusProxy *proxy = G_DBUS_PROXY (source);
GsmSystemd *manager = GSM_SYSTEMD (user_data);
GError *error = NULL;
GVariant *res;
GUnixFDList *fd_list = NULL;
gint idx;
res = g_dbus_proxy_call_with_unix_fd_list_finish (proxy, &fd_list, result, &error);
if (!res) {
g_warning ("Unable to inhibit system: %s", error->message);
g_error_free (error);
} else {
g_variant_get (res, "(h)", &idx);
manager->priv->inhibit_fd = g_unix_fd_list_get (fd_list, idx, &error);
if (manager->priv->inhibit_fd == -1) {
g_warning ("Failed to receive system inhibitor fd: %s", error->message);
g_error_free (error);
}
g_debug ("System inhibitor fd is %d", manager->priv->inhibit_fd);
g_object_unref (fd_list);
g_variant_unref (res);
}
if (manager->priv->inhibitors == NULL) {
drop_system_inhibitor (manager);
}
}
static void
gsm_systemd_add_inhibitor (GsmSystem *system,
const gchar *id,
GsmInhibitorFlag flag)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
if ((flag & GSM_INHIBITOR_FLAG_SUSPEND) == 0)
return;
if (manager->priv->inhibitors == NULL) {
g_debug ("Adding system inhibitor");
g_dbus_proxy_call_with_unix_fd_list (manager->priv->sd_proxy,
"Inhibit",
g_variant_new ("(ssss)",
"sleep:shutdown",
g_get_user_name (),
"user session inhibited",
"block"),
0,
G_MAXINT,
NULL,
NULL,
inhibit_done,
manager);
}
manager->priv->inhibitors = g_slist_prepend (manager->priv->inhibitors, g_strdup (id));
}
static void
gsm_systemd_remove_inhibitor (GsmSystem *system,
const gchar *id)
{
GsmSystemd *manager = GSM_SYSTEMD (system);
GSList *l;
l = g_slist_find_custom (manager->priv->inhibitors, id, (GCompareFunc)g_strcmp0);
if (l == NULL)
return;
g_free (l->data);
manager->priv->inhibitors = g_slist_delete_link (manager->priv->inhibitors, l);
if (manager->priv->inhibitors == NULL) {
drop_system_inhibitor (manager);
}
}
static void
reboot_or_poweroff_done (GObject *source,
GAsyncResult *res,
gpointer user_data)
{
GsmSystemd *systemd = user_data;
GVariant *result;
GError *error = NULL;
result = g_dbus_proxy_call_finish (G_DBUS_PROXY (source),
res,
&error);
if (result == NULL) {
if (!g_error_matches (error, G_DBUS_ERROR, G_DBUS_ERROR_ACCESS_DENIED)) {
g_warning ("Shutdown failed: %s", error->message);
}
g_error_free (error);
drop_delay_inhibitor (systemd);
g_debug ("GsmSystemd: shutdown preparation failed");
systemd->priv->prepare_for_shutdown_expected = FALSE;
g_signal_emit_by_name (systemd, "shutdown-prepared", FALSE);
} else {
g_variant_unref (result);
}
}
static void
gsm_systemd_prepare_shutdown (GsmSystem *system,
gboolean restart)
{
GsmSystemd *systemd = GSM_SYSTEMD (system);
GUnixFDList *fd_list;
GVariant *res;
GError *error = NULL;
gint idx;
g_debug ("GsmSystemd: prepare shutdown");
res = g_dbus_proxy_call_with_unix_fd_list_sync (systemd->priv->sd_proxy,
"Inhibit",
g_variant_new ("(ssss)",
"shutdown",
g_get_user_name (),
"Preparing to end the session",
"delay"),
0,
G_MAXINT,
NULL,
&fd_list,
NULL,
&error);
if (res == NULL) {
g_warning ("Failed to get delay inhibitor: %s", error->message);
g_error_free (error);
g_signal_emit_by_name (systemd, "shutdown-prepared", FALSE);
return;
}
g_variant_get (res, "(h)", &idx);
systemd->priv->delay_inhibit_fd = g_unix_fd_list_get (fd_list, idx, NULL);
g_debug ("GsmSystemd: got delay inhibitor, fd = %d", systemd->priv->delay_inhibit_fd);
g_variant_unref (res);
g_object_unref (fd_list);
systemd->priv->prepare_for_shutdown_expected = TRUE;
g_dbus_proxy_call (systemd->priv->sd_proxy,
restart ? "Reboot" : "PowerOff",
g_variant_new ("(b)", TRUE),
0,
G_MAXINT,
NULL,
reboot_or_poweroff_done,
systemd);
}
static void
gsm_systemd_complete_shutdown (GsmSystem *system)
{
GsmSystemd *systemd = GSM_SYSTEMD (system);
/* remove delay inhibitor, if any */
drop_delay_inhibitor (systemd);
}
static gboolean
gsm_systemd_is_last_session_for_user (GsmSystem *system)
{
char **sessions = NULL;
char *session = NULL;
gboolean is_last_session;
int ret, i;
ret = sd_pid_get_session (getpid (), &session);
if (ret != 0) {
return FALSE;
}
ret = sd_uid_get_sessions (getuid (), FALSE, &sessions);
if (ret <= 0) {
free (session);
return FALSE;
}
is_last_session = TRUE;
for (i = 0; sessions[i]; i++) {
char *state = NULL;
char *type = NULL;
if (g_strcmp0 (sessions[i], session) == 0)
continue;
ret = sd_session_get_state (sessions[i], &state);
if (ret != 0)
continue;
if (g_strcmp0 (state, "closing") == 0) {
free (state);
continue;
}
free (state);
ret = sd_session_get_type (sessions[i], &type);
if (ret != 0)
continue;
if (g_strcmp0 (type, "x11") != 0 &&
g_strcmp0 (type, "wayland") != 0) {
free (type);
continue;
}
is_last_session = FALSE;
}
for (i = 0; sessions[i]; i++)
free (sessions[i]);
free (sessions);
free (session);
return is_last_session;
}
static void
gsm_systemd_system_init (GsmSystemInterface *iface)
{
iface->can_switch_user = gsm_systemd_can_switch_user;
iface->can_stop = gsm_systemd_can_stop;
iface->can_restart = gsm_systemd_can_restart;
iface->can_suspend = gsm_systemd_can_suspend;
iface->can_hibernate = gsm_systemd_can_hibernate;
iface->attempt_stop = gsm_systemd_attempt_stop;
iface->attempt_restart = gsm_systemd_attempt_restart;
iface->suspend = gsm_systemd_suspend;
iface->hibernate = gsm_systemd_hibernate;
iface->set_session_idle = gsm_systemd_set_session_idle;
iface->is_login_session = gsm_systemd_is_login_session;
iface->add_inhibitor = gsm_systemd_add_inhibitor;
iface->remove_inhibitor = gsm_systemd_remove_inhibitor;
iface->prepare_shutdown = gsm_systemd_prepare_shutdown;
iface->complete_shutdown = gsm_systemd_complete_shutdown;
iface->is_last_session_for_user = gsm_systemd_is_last_session_for_user;
}
GsmSystemd *
gsm_systemd_new (void)
{
GsmSystemd *manager;
/* logind is not running ? */
if (access("/run/systemd/seats/", F_OK) < 0)
return NULL;
manager = g_object_new (GSM_TYPE_SYSTEMD, NULL);
return manager;
}
static void
sd_proxy_signal_cb (GDBusProxy *proxy,
const gchar *sender_name,
const gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
GsmSystemd *systemd = user_data;
gboolean is_about_to_shutdown;
g_debug ("GsmSystemd: received logind signal: %s", signal_name);
if (g_strcmp0 (signal_name, "PrepareForShutdown") != 0) {
g_debug ("GsmSystemd: ignoring %s signal", signal_name);
return;
}
g_variant_get (parameters, "(b)", &is_about_to_shutdown);
if (!is_about_to_shutdown) {
g_debug ("GsmSystemd: ignoring %s signal since about-to-shutdown is FALSE", signal_name);
return;
}
if (systemd->priv->prepare_for_shutdown_expected) {
g_debug ("GsmSystemd: shutdown successfully prepared");
g_signal_emit_by_name (systemd, "shutdown-prepared", TRUE);
systemd->priv->prepare_for_shutdown_expected = FALSE;
}
}
#else
GsmSystemd *
gsm_systemd_new (void)
{
return NULL;
}
#endif