1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2013 Lennart Poettering
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 #include <sys/socket.h>
26 #include <netinet/in.h>
36 #include "bus-error.h"
37 #include "bus-match.h"
38 #include "bus-kernel.h"
40 struct reply_callback {
41 sd_bus_message_handler_t callback;
48 struct filter_callback {
49 sd_bus_message_handler_t callback;
52 unsigned last_iteration;
54 LIST_FIELDS(struct filter_callback, callbacks);
57 struct object_callback {
58 sd_bus_message_handler_t callback;
64 unsigned last_iteration;
76 static inline bool BUS_IS_OPEN(enum bus_state state) {
77 return state > BUS_UNSET && state < BUS_CLOSED;
87 /* We use atomic ref counting here since sd_bus_message
88 objects retain references to their originating sd_bus but
89 we want to allow them to be processed in a different
90 thread. We won't provide full thread safety, but only the
91 bare minimum that makes it possible to use sd_bus and
92 sd_bus_message objects independently and on different
93 threads as long as each object is used only once at the
98 int input_fd, output_fd;
106 bool anonymous_auth:1;
108 bool prefer_writev:1;
110 bool match_callbacks_modified:1;
111 bool filter_callbacks_modified:1;
112 bool object_callbacks_modified:1;
117 sd_bus_message **rqueue;
118 unsigned rqueue_size;
120 sd_bus_message **wqueue;
121 unsigned wqueue_size;
128 struct bus_match_node match_callbacks;
129 Prioq *reply_callbacks_prioq;
130 Hashmap *reply_callbacks;
131 LIST_HEAD(struct filter_callback, filter_callbacks);
132 Hashmap *object_callbacks;
136 struct sockaddr_un un;
137 struct sockaddr_in in;
138 struct sockaddr_in6 in6;
140 socklen_t sockaddr_size;
144 sd_id128_t server_id;
147 unsigned address_index;
149 int last_connect_error;
153 struct iovec auth_iovec[3];
159 char label[NAME_MAX];
167 uint64_t hello_serial;
168 unsigned iteration_counter;
172 /* We do locking around the memfd cache, since we want to
173 * allow people to process a sd_bus_message in a different
174 * thread then it was generated on and free it there. Since
175 * adding something to the memfd cache might happen when a
176 * message is released, we hence need to protect this bit with
178 pthread_mutex_t memfd_cache_mutex;
179 struct memfd_cache memfd_cache[MEMFD_CACHE_MAX];
180 unsigned n_memfd_cache;
184 uint64_t hello_flags;
186 uint64_t match_cookie;
189 static inline void bus_unrefp(sd_bus **b) {
193 #define _cleanup_bus_unref_ __attribute__((cleanup(bus_unrefp)))
194 #define _cleanup_bus_error_free_ __attribute__((cleanup(sd_bus_error_free)))
196 #define BUS_DEFAULT_TIMEOUT ((usec_t) (25 * USEC_PER_SEC))
198 #define BUS_WQUEUE_MAX 128
199 #define BUS_RQUEUE_MAX 128
201 #define BUS_MESSAGE_SIZE_MAX (64*1024*1024)
202 #define BUS_AUTH_SIZE_MAX (64*1024)
204 #define BUS_CONTAINER_DEPTH 128
206 /* Defined by the specification as maximum size of an array in
208 #define BUS_ARRAY_MAX_SIZE 67108864
210 #define BUS_FDS_MAX 1024
212 #define BUS_EXEC_ARGV_MAX 256
214 bool object_path_is_valid(const char *p);
215 bool interface_name_is_valid(const char *p);
216 bool service_name_is_valid(const char *p);
217 bool member_name_is_valid(const char *p);
219 bool namespace_complex_pattern(const char *pattern, const char *value);
220 bool path_complex_pattern(const char *pattern, const char *value);
222 bool namespace_simple_pattern(const char *pattern, const char *value);
223 bool path_simple_pattern(const char *pattern, const char *value);
225 int bus_message_type_from_string(const char *s, uint8_t *u);
226 const char *bus_message_type_to_string(uint8_t u);
228 #define error_name_is_valid interface_name_is_valid
230 int bus_ensure_running(sd_bus *bus);
231 int bus_start_running(sd_bus *bus);
232 int bus_next_address(sd_bus *bus);
234 bool bus_pid_changed(sd_bus *bus);