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>
35 #include "bus-error.h"
36 #include "bus-match.h"
37 #include "bus-kernel.h"
39 struct reply_callback {
40 sd_bus_message_handler_t callback;
47 struct filter_callback {
48 sd_bus_message_handler_t callback;
51 unsigned last_iteration;
53 LIST_FIELDS(struct filter_callback, callbacks);
56 struct object_callback {
57 sd_bus_message_handler_t callback;
63 unsigned last_iteration;
75 static inline bool BUS_IS_OPEN(enum bus_state state) {
76 return state > BUS_UNSET && state < BUS_CLOSED;
86 /* We use atomic ref counting here since sd_bus_message
87 objects retain references to their originating sd_bus but
88 we want to allow them to be processed in a different
89 thread. We won't provide full thread safety, but only the
90 bare minimum that makes it possible to use sd_bus and
91 sd_bus_message objects independently and on different
92 threads as long as each object is used only once at the
97 int input_fd, output_fd;
101 bool negotiate_fds:1;
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 struct memfd_cache memfd_cache[MEMFD_CACHE_MAX];
173 unsigned n_memfd_cache;
178 static inline void bus_unrefp(sd_bus **b) {
182 #define _cleanup_bus_unref_ __attribute__((cleanup(bus_unrefp)))
183 #define _cleanup_bus_error_free_ __attribute__((cleanup(sd_bus_error_free)))
185 #define BUS_DEFAULT_TIMEOUT ((usec_t) (25 * USEC_PER_SEC))
187 #define BUS_WQUEUE_MAX 128
188 #define BUS_RQUEUE_MAX 128
190 #define BUS_MESSAGE_SIZE_MAX (64*1024*1024)
191 #define BUS_AUTH_SIZE_MAX (64*1024)
193 #define BUS_CONTAINER_DEPTH 128
195 /* Defined by the specification as maximum size of an array in
197 #define BUS_ARRAY_MAX_SIZE 67108864
199 #define BUS_FDS_MAX 1024
201 #define BUS_EXEC_ARGV_MAX 256
203 bool object_path_is_valid(const char *p);
204 bool interface_name_is_valid(const char *p);
205 bool service_name_is_valid(const char *p);
206 bool member_name_is_valid(const char *p);
208 bool namespace_complex_pattern(const char *pattern, const char *value);
209 bool path_complex_pattern(const char *pattern, const char *value);
211 bool namespace_simple_pattern(const char *pattern, const char *value);
212 bool path_simple_pattern(const char *pattern, const char *value);
214 int bus_message_type_from_string(const char *s, uint8_t *u);
215 const char *bus_message_type_to_string(uint8_t u);
217 #define error_name_is_valid interface_name_is_valid
219 int bus_ensure_running(sd_bus *bus);
220 int bus_start_running(sd_bus *bus);
221 int bus_next_address(sd_bus *bus);
223 bool bus_pid_changed(sd_bus *bus);