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Shut down the daemon if the on-disk binary is replaced

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If we update fwupd 'live' rather than from an ostree or offline update then
kill the running instance unless a firmware update is ongoing.

When users update fwupd at runtime they often forget to restart the fwupd daemon
and say that the update didn't fix it when actually they using the the old code.
This commit is contained in:
Richard Hughes 2019-03-27 12:48:39 +00:00
parent 224a9036ae
commit f3dc1621bc
1 changed files with 25 additions and 0 deletions
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25
src/fu-main.c
View File

@ -41,6 +41,7 @@ typedef struct {
GDBusNodeInfo *introspection_daemon;
GDBusProxy *proxy_uid;
GMainLoop *loop;
GFileMonitor *argv0_monitor;
PolkitAuthority *authority;
guint owner_id;
FuEngine *engine;
@ -1416,6 +1417,21 @@ fu_main_timed_exit_cb (gpointer user_data)
return G_SOURCE_REMOVE;
}
static void
fu_main_argv_changed_cb (GFileMonitor *monitor, GFile *file, GFile *other_file,
GFileMonitorEvent event_type, gpointer user_data)
{
FuMainPrivate *priv = (FuMainPrivate *) user_data;
/* can do straight away? */
if (priv->update_in_progress) {
g_warning ("binary changed during a firmware update, ignoring");
return;
}
g_debug ("binary changed, shutting down");
g_main_loop_quit (priv->loop);
}
static GDBusNodeInfo *
fu_main_load_introspection (const gchar *filename, GError **error)
{
@ -1450,6 +1466,8 @@ fu_main_private_free (FuMainPrivate *priv)
g_object_unref (priv->connection);
if (priv->authority != NULL)
g_object_unref (priv->authority);
if (priv->argv0_monitor != NULL)
g_object_unref (priv->argv0_monitor);
if (priv->introspection_daemon != NULL)
g_dbus_node_info_unref (priv->introspection_daemon);
g_free (priv);
@ -1476,6 +1494,7 @@ main (int argc, char *argv[])
};
g_autoptr(FuMainPrivate) priv = NULL;
g_autoptr(GError) error = NULL;
g_autoptr(GFile) argv0_file = g_file_new_for_path (argv[0]);
g_autoptr(GOptionContext) context = NULL;
setlocale (LC_ALL, "");
@ -1529,6 +1548,12 @@ main (int argc, char *argv[])
SIGTERM, fu_main_sigterm_cb,
priv, NULL);
/* restart the daemon if the binary gets replaced */
priv->argv0_monitor = g_file_monitor_file (argv0_file, G_FILE_MONITOR_NONE,
NULL, &error);
g_signal_connect (priv->argv0_monitor, "changed",
G_CALLBACK (fu_main_argv_changed_cb), priv);
/* load introspection from file */
priv->introspection_daemon = fu_main_load_introspection (FWUPD_DBUS_INTERFACE ".xml",
&error);