src/dbus-target.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 <errno.h>
  23
  24 #include "dbus-unit.h"
  25 #include "dbus-target.h"
  26
  27 #define BUS_TARGET_INTERFACE                                            \
  28         " <interface name=\"org.freedesktop.systemd1.Target\">\n"       \
  29         "  <property name=\"SysVRunLevel\" type=\"s\" access=\"read\"/>\n" \
  30         " </interface>\n"
  31
  32 #define INTROSPECTION                                                   \
  33         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
  34         "<node>\n"                                                      \
  35         BUS_UNIT_INTERFACE                                              \
  36         BUS_TARGET_INTERFACE                                            \
  37         BUS_PROPERTIES_INTERFACE                                        \
  38         BUS_INTROSPECTABLE_INTERFACE                                    \
  39         "</node>\n"
  40
  41 const char bus_target_interface[] = BUS_TARGET_INTERFACE;
  42
  43 static int bus_target_append_runlevel(Manager *n, DBusMessageIter *i, const char *property, void *data) {
  44         Target *t = data;
  45         const char *d;
  46         char buf[2];
  47
  48         assert(n);
  49         assert(i);
  50         assert(property);
  51         assert(t);
  52
  53         buf[0] = (char) target_get_runlevel(t);
  54         buf[1] = 0;
  55
  56         d = buf;
  57
  58         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
  59                 return -ENOMEM;
  60
  61         return 0;
  62 }
  63
  64 DBusHandlerResult bus_target_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
  65         const BusProperty properties[] = {
  66                 BUS_UNIT_PROPERTIES,
  67                 { "org.freedesktop.systemd1.Target", "SysVRunLevel", bus_target_append_runlevel, "s", u },
  68                 { NULL, NULL, NULL, NULL, NULL }
  69         };
  70
  71         return bus_default_message_handler(u->meta.manager, c, message, INTROSPECTION, properties);
  72 }