/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <dbus/dbus.h> #include <stdlib.h> #include "log.h" #include "dbus-common.h" int main(int argc, char *argv[]) { DBusError error; DBusConnection *bus = NULL; DBusMessage *m = NULL; int r = EXIT_FAILURE; dbus_error_init(&error); if (argc != 2) { log_error("Incorrect number of arguments."); goto finish; } log_set_target(LOG_TARGET_AUTO); log_parse_environment(); log_open(); /* We send this event to the private D-Bus socket and then the * system instance will forward this to the system bus. We do * this to avoid an activation loop when we start dbus when we * are called when the dbus service is shut down. */ if (!(bus = dbus_connection_open_private("unix:path=/run/systemd/private", &error))) { #ifndef LEGACY dbus_error_free(&error); /* Retry with the pre v21 socket name, to ease upgrades */ if (!(bus = dbus_connection_open_private("unix:abstract=/org/freedesktop/systemd1/private", &error))) { #endif log_error("Failed to get D-Bus connection: %s", bus_error_message(&error)); goto finish; } #ifndef LEGACY } #endif if (bus_check_peercred(bus) < 0) { log_error("Bus owner not root."); goto finish; } if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1/agent", "org.freedesktop.systemd1.Agent", "Released"))) { log_error("Could not allocate signal message."); goto finish; } if (!dbus_message_append_args(m, DBUS_TYPE_STRING, &argv[1], DBUS_TYPE_INVALID)) { log_error("Could not attach group information to signal message."); goto finish; } if (!dbus_connection_send(bus, m, NULL)) { log_error("Failed to send signal message on private connection."); goto finish; } r = EXIT_SUCCESS; finish: if (bus) { dbus_connection_flush(bus); dbus_connection_close(bus); dbus_connection_unref(bus); } if (m) dbus_message_unref(m); dbus_error_free(&error); return r; }