src/core/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 Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 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   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser 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 static const BusProperty bus_snapshot_properties[] = {
  49         { "Cleanup", bus_property_append_bool, "b", offsetof(Snapshot, cleanup) },
  50         { NULL, }
  51 };
  52
  53 DBusHandlerResult bus_snapshot_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
  54         Snapshot *s = SNAPSHOT(u);
  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                 const BusBoundProperties bps[] = {
  70                         { "org.freedesktop.systemd1.Unit",     bus_unit_properties,     u },
  71                         { "org.freedesktop.systemd1.Snapshot", bus_snapshot_properties, s },
  72                         { NULL, }
  73                 };
  74                 return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps);
  75         }
  76
  77         if (reply) {
  78                 if (!dbus_connection_send(c, reply, NULL))
  79                         goto oom;
  80
  81                 dbus_message_unref(reply);
  82         }
  83
  84         return DBUS_HANDLER_RESULT_HANDLED;
  85
  86 oom:
  87         if (reply)
  88                 dbus_message_unref(reply);
  89
  90         dbus_error_free(&error);
  91
  92         return DBUS_HANDLER_RESULT_NEED_MEMORY;
  93 }