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Query the kernel to decide if we have hibernate and suspend support

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This commit is contained in:
Richard Hughes 2009-07-21 19:26:52 +01:00
parent e44e8b0b79
commit 9805175e6e
1 changed files with 37 additions and 5 deletions
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42
src/dkp-daemon.c
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@ -85,6 +85,8 @@ struct DkpDaemonPrivate
GUdevClient *gudev_client;
gboolean lid_is_closed;
gboolean lid_is_present;
gboolean can_suspend;
gboolean can_hibernate;
};
static void dkp_daemon_class_init (DkpDaemonClass *klass);
@ -200,13 +202,11 @@ dkp_daemon_get_property (GObject *object,
break;
case PROP_CAN_SUSPEND:
/* TODO: for now assume we can always suspend */
g_value_set_boolean (value, TRUE);
g_value_set_boolean (value, daemon->priv->can_suspend);
break;
case PROP_CAN_HIBERNATE:
/* TODO for now assume we can always hibernate */
g_value_set_boolean (value, TRUE);
g_value_set_boolean (value, daemon->priv->can_hibernate);
break;
case PROP_ON_BATTERY:
@ -303,7 +303,7 @@ dkp_daemon_class_init (DkpDaemonClass *klass)
G_PARAM_READABLE));
g_object_class_install_property (object_class,
PROP_CAN_SUSPEND,
PROP_CAN_HIBERNATE,
g_param_spec_boolean ("can-hibernate",
"Can Hibernate",
"Whether the system can hibernate",
@ -339,6 +339,33 @@ dkp_daemon_class_init (DkpDaemonClass *klass)
dbus_g_error_domain_register (DKP_DAEMON_ERROR, NULL, DKP_DAEMON_TYPE_ERROR);
}
/**
* dkp_daemon_check_state:
**/
static gboolean
dkp_daemon_check_state (DkpDaemon *daemon)
{
gchar *contents = NULL;
GError *error = NULL;
gboolean ret;
const gchar *filename = "/sys/power/state";
/* see what kernel can do */
ret = g_file_get_contents (filename, &contents, NULL, &error);
if (!ret) {
egg_warning ("failed to open %s: %s", filename, error->message);
g_error_free (error);
goto out;
}
/* does the kernel advertise this */
daemon->priv->can_suspend = (g_strstr_len (contents, -1, "mem") != NULL);
daemon->priv->can_hibernate = (g_strstr_len (contents, -1, "disk") != NULL);
out:
g_free (contents);
return ret;
}
/**
* dkp_daemon_init:
**/
@ -349,6 +376,11 @@ dkp_daemon_init (DkpDaemon *daemon)
daemon->priv->polkit = dkp_polkit_new ();
daemon->priv->lid_is_present = FALSE;
daemon->priv->lid_is_closed = FALSE;
daemon->priv->can_suspend = FALSE;
daemon->priv->can_hibernate = FALSE;
/* check if we have support */
dkp_daemon_check_state (daemon);
}
/**