src/dbus-snapshot.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   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-unit.h"
  23 #include "dbus-snapshot.h"
  24 #include "dbus-common.h"
  25
  26 #define BUS_SNAPSHOT_INTERFACE                                          \
  27         " <interface name=\"org.freedesktop.systemd1.Snapshot\">\n"     \
  28         "  <method name=\"Remove\"/>\n"                                 \
  29         "  <property name=\"Cleanup\" type=\"b\" 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_SNAPSHOT_INTERFACE                                          \
  37         BUS_PROPERTIES_INTERFACE                                        \
  38         BUS_PEER_INTERFACE                                              \
  39         BUS_INTROSPECTABLE_INTERFACE                                    \
  40         "</node>\n"
  41
  42 #define INTERFACES_LIST                              \
  43         BUS_UNIT_INTERFACES_LIST                     \
  44         "org.freedesktop.systemd1.Snapshot\0"
  45
  46 const char bus_snapshot_interface[] _introspect_("Snapshot") = BUS_SNAPSHOT_INTERFACE;
  47
  48 DBusHandlerResult bus_snapshot_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
  49
  50         const BusProperty properties[] = {
  51                 BUS_UNIT_PROPERTIES,
  52                 { "org.freedesktop.systemd1.Snapshot", "Cleanup", bus_property_append_bool, "b", &u->snapshot.cleanup },
  53                 { NULL, NULL, NULL, NULL, NULL }
  54         };
  55
  56         DBusMessage *reply = NULL;
  57         DBusError error;
  58
  59         dbus_error_init(&error);
  60
  61         if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Snapshot", "Remove")) {
  62
  63                 snapshot_remove(SNAPSHOT(u));
  64
  65                 if (!(reply = dbus_message_new_method_return(message)))
  66                         goto oom;
  67
  68         } else
  69                 return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, properties);
  70
  71         if (reply) {
  72                 if (!dbus_connection_send(c, reply, NULL))
  73                         goto oom;
  74
  75                 dbus_message_unref(reply);
  76         }
  77
  78         return DBUS_HANDLER_RESULT_HANDLED;
  79
  80 oom:
  81         if (reply)
  82                 dbus_message_unref(reply);
  83
  84         dbus_error_free(&error);
  85
  86         return DBUS_HANDLER_RESULT_NEED_MEMORY;
  87 }