static void change_runlevel(Server *s, int runlevel) {
const char *target;
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
const char *mode;
bool isolate = false;
assert(s);
dbus_error_init(&error);
if (!(target = translate_runlevel(runlevel, &isolate))) {
log_warning("Got request for unknown runlevel %c, ignoring.", runlevel);
goto finish;
}
if (isolate)
mode = "isolate";
else
mode = "replace-irreversibly";
log_debug("Running request %s/start/%s", target, mode);
if (!(m = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnit"))) {
log_error("Could not allocate message.");
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &target,
DBUS_TYPE_STRING, &mode,
DBUS_TYPE_INVALID)) {
log_error("Could not attach target and flag information to message.");
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(s->bus, m, -1, &error))) {
log_error("Failed to start unit: %s", bus_error_message(&error));
goto finish;
}
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
}
static void change_runlevel(Server *s, int runlevel) {
const char *target;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
const char *mode;
bool isolate = false;
int r;
assert(s);
target = translate_runlevel(runlevel, &isolate);
if (!target) {
log_warning("Got request for unknown runlevel %c, ignoring.", runlevel);
return;
}
if (isolate)
mode = "isolate";
else
mode = "replace-irreversibly";
log_debug("Running request %s/start/%s", target, mode);
r = sd_bus_call_method(
s->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StartUnit",
&error,
NULL,
"ss", target, mode);
if (r < 0) {
log_error("Failed to change runlevel: %s", bus_error_message(&error, -r));
return;
}
}
