src/dbus-target.c

/*-*- Mode: C; c-basic-offset: 8 -*-*/

/***
  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 General Public License as published by
  the Free Software Foundation; either version 2 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
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include <errno.h>

#include "dbus-unit.h"
#include "dbus-target.h"

#define BUS_TARGET_INTERFACE                                            \
        " <interface name=\"org.freedesktop.systemd1.Target\">\n"       \
        "  <property name=\"SysVRunLevel\" type=\"s\" access=\"read\"/>\n" \
        " </interface>\n"

#define INTROSPECTION                                                   \
        DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
        "<node>\n"                                                      \
        BUS_UNIT_INTERFACE                                              \
        BUS_TARGET_INTERFACE                                            \
        BUS_PROPERTIES_INTERFACE                                        \
        BUS_INTROSPECTABLE_INTERFACE                                    \
        "</node>\n"

const char bus_target_interface[] = BUS_TARGET_INTERFACE;

static int bus_target_append_runlevel(Manager *n, DBusMessageIter *i, const char *property, void *data) {
        Target *t = data;
        const char *d;
        char buf[2];

        assert(n);
        assert(i);
        assert(property);
        assert(t);

        buf[0] = (char) target_get_runlevel(t);
        buf[1] = 0;

        d = buf;

        if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
                return -ENOMEM;

        return 0;
}

DBusHandlerResult bus_target_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
        const BusProperty properties[] = {
                BUS_UNIT_PROPERTIES,
                { "org.freedesktop.systemd1.Target", "SysVRunLevel", bus_target_append_runlevel, "s", u },
                { NULL, NULL, NULL, NULL, NULL }
        };

        return bus_default_message_handler(u->meta.manager, c, message, INTROSPECTION, properties);
}