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diff --git a/src/libsystemd-bus/bus-internal.h b/src/libsystemd-bus/bus-internal.h
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+++ b/src/libsystemd-bus/bus-internal.h
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+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+
+#include "hashmap.h"
+#include "list.h"
+#include "util.h"
+
+#include "sd-bus.h"
+#include "bus-error.h"
+
+struct reply_callback {
+ sd_message_handler_t callback;
+ void *userdata;
+ usec_t timeout;
+ uint64_t serial;
+};
+
+struct filter_callback {
+ sd_message_handler_t callback;
+ void *userdata;
+
+ LIST_FIELDS(struct filter_callback, callbacks);
+};
+
+enum bus_state {
+ BUS_OPENING,
+ BUS_AUTHENTICATING,
+ BUS_HELLO,
+ BUS_RUNNING,
+ BUS_CLOSED
+};
+
+struct sd_bus {
+ unsigned n_ref;
+ enum bus_state state;
+ int fd;
+ int message_version;
+ bool can_fds:1;
+ bool send_hello:1;
+
+ void *rbuffer;
+ size_t rbuffer_size;
+
+ sd_bus_message **rqueue;
+ unsigned rqueue_size;
+
+ sd_bus_message **wqueue;
+ unsigned wqueue_size;
+ size_t windex;
+
+ uint64_t serial;
+
+ char *unique_name;
+
+ Hashmap *reply_callbacks;
+ LIST_HEAD(struct filter_callback, filter_callbacks);
+
+ union {
+ struct sockaddr sa;
+ struct sockaddr_un un;
+ struct sockaddr_in in;
+ struct sockaddr_in6 in6;
+ } sockaddr;
+ socklen_t sockaddr_size;
+
+ sd_id128_t peer;
+
+ char *address;
+ unsigned address_index;
+
+ int last_connect_error;
+
+ struct iovec auth_iovec[3];
+ unsigned auth_index;
+ size_t auth_size;
+ char *auth_uid;
+};