cgroups-agent.c

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 2 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <dbus/dbus.h>
  23
  24 #include "log.h"
  25
  26 int main(int argc, char *argv[]) {
  27         DBusError error;
  28         DBusConnection *bus = NULL;
  29         DBusMessage *m = NULL;
  30         int r = 1;
  31
  32         dbus_error_init(&error);
  33
  34         if (argc != 2) {
  35                 log_error("Incorrect number of arguments.");
  36                 goto finish;
  37         }
  38
  39         if (!(bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error))) {
  40                 log_error("Failed to get D-Bus connection: %s", error.message);
  41                 goto finish;
  42         }
  43
  44         if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1/agent", "org.freedesktop.systemd1.Agent", "Released"))) {
  45                 log_error("Could not allocate signal message.");
  46                 goto finish;
  47         }
  48
  49         if (!dbus_message_append_args(m,
  50                                       DBUS_TYPE_STRING, &argv[1],
  51                                       DBUS_TYPE_INVALID)) {
  52                 log_error("Could not attach group information to signal message.");
  53                 goto finish;
  54         }
  55
  56         if (!dbus_connection_send(bus, m, NULL)) {
  57                 log_error("Failed to send signal message.");
  58                 goto finish;
  59         }
  60
  61         r = 0;
  62
  63 finish:
  64         if (bus)
  65                 dbus_connection_unref(bus);
  66
  67         if (m)
  68                 dbus_message_unref(m);
  69
  70         dbus_error_free(&error);
  71         return r;
  72 }