1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
7 This file is part of systemd.
9 Copyright 2013 Lennart Poettering
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU Lesser General Public License as published by
13 the Free Software Foundation; either version 2.1 of the License, or
14 (at your option) any later version.
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 Lesser General Public License for more details.
21 You should have received a copy of the GNU Lesser General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/types.h>
32 #include "_sd-common.h"
34 _SD_BEGIN_DECLARATIONS
;
38 typedef struct sd_bus sd_bus
;
39 typedef struct sd_bus_message sd_bus_message
;
40 typedef struct sd_bus_creds sd_bus_creds
;
51 SD_BUS_CREDS_UID
= 1ULL << 0,
52 SD_BUS_CREDS_GID
= 1ULL << 1,
53 SD_BUS_CREDS_PID
= 1ULL << 2,
54 SD_BUS_CREDS_PID_STARTTIME
= 1ULL << 3,
55 SD_BUS_CREDS_TID
= 1ULL << 4,
56 SD_BUS_CREDS_COMM
= 1ULL << 5,
57 SD_BUS_CREDS_TID_COMM
= 1ULL << 6,
58 SD_BUS_CREDS_EXE
= 1ULL << 7,
59 SD_BUS_CREDS_CMDLINE
= 1ULL << 8,
60 SD_BUS_CREDS_CGROUP
= 1ULL << 9,
61 SD_BUS_CREDS_UNIT
= 1ULL << 10,
62 SD_BUS_CREDS_USER_UNIT
= 1ULL << 11,
63 SD_BUS_CREDS_SLICE
= 1ULL << 12,
64 SD_BUS_CREDS_SESSION
= 1ULL << 13,
65 SD_BUS_CREDS_OWNER_UID
= 1ULL << 14,
66 SD_BUS_CREDS_EFFECTIVE_CAPS
= 1ULL << 15,
67 SD_BUS_CREDS_PERMITTED_CAPS
= 1ULL << 16,
68 SD_BUS_CREDS_INHERITABLE_CAPS
= 1ULL << 17,
69 SD_BUS_CREDS_BOUNDING_CAPS
= 1ULL << 18,
70 SD_BUS_CREDS_SELINUX_CONTEXT
= 1ULL << 19,
71 SD_BUS_CREDS_AUDIT_SESSION_ID
= 1ULL << 20,
72 SD_BUS_CREDS_AUDIT_LOGIN_UID
= 1ULL << 21,
73 _SD_BUS_CREDS_MAX
= (1ULL << 22) -1,
78 typedef int (*sd_bus_message_handler_t
)(sd_bus
*bus
, sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
);
79 typedef int (*sd_bus_property_get_t
) (sd_bus
*bus
, const char *path
, const char *interface
, const char *property
, sd_bus_message
*reply
, void *userdata
, sd_bus_error
*ret_error
);
80 typedef int (*sd_bus_property_set_t
) (sd_bus
*bus
, const char *path
, const char *interface
, const char *property
, sd_bus_message
*value
, void *userdata
, sd_bus_error
*ret_error
);
81 typedef int (*sd_bus_object_find_t
) (sd_bus
*bus
, const char *path
, const char *interface
, void *userdata
, void **ret_found
, sd_bus_error
*ret_error
);
82 typedef int (*sd_bus_node_enumerator_t
) (sd_bus
*bus
, const char *path
, void *userdata
, char ***ret_nodes
, sd_bus_error
*ret_error
);
84 #include "sd-bus-protocol.h"
85 #include "sd-bus-vtable.h"
89 int sd_bus_default_user(sd_bus
**ret
);
90 int sd_bus_default_system(sd_bus
**ret
);
92 int sd_bus_open_user(sd_bus
**ret
);
93 int sd_bus_open_system(sd_bus
**ret
);
94 int sd_bus_open_system_remote(const char *host
, sd_bus
**ret
);
95 int sd_bus_open_system_container(const char *machine
, sd_bus
**ret
);
97 int sd_bus_new(sd_bus
**ret
);
98 int sd_bus_set_address(sd_bus
*bus
, const char *address
);
99 int sd_bus_set_fd(sd_bus
*bus
, int input_fd
, int output_fd
);
100 int sd_bus_set_exec(sd_bus
*bus
, const char *path
, char *const argv
[]);
101 int sd_bus_set_bus_client(sd_bus
*bus
, int b
);
102 int sd_bus_set_server(sd_bus
*bus
, int b
, sd_id128_t server_id
);
103 int sd_bus_set_anonymous(sd_bus
*bus
, int b
);
104 int sd_bus_negotiate_fds(sd_bus
*bus
, int b
);
105 int sd_bus_negotiate_attach_timestamp(sd_bus
*bus
, int b
);
106 int sd_bus_negotiate_attach_creds(sd_bus
*bus
, uint64_t creds_mask
);
107 int sd_bus_start(sd_bus
*ret
);
109 void sd_bus_close(sd_bus
*bus
);
111 sd_bus
*sd_bus_ref(sd_bus
*bus
);
112 sd_bus
*sd_bus_unref(sd_bus
*bus
);
114 int sd_bus_is_open(sd_bus
*bus
);
115 int sd_bus_can_send(sd_bus
*bus
, char type
);
116 int sd_bus_get_server_id(sd_bus
*bus
, sd_id128_t
*peer
);
117 int sd_bus_get_peer_creds(sd_bus
*bus
, uint64_t creds_mask
, sd_bus_creds
**ret
);
119 int sd_bus_send(sd_bus
*bus
, sd_bus_message
*m
, uint64_t *serial
);
120 int sd_bus_send_to(sd_bus
*bus
, sd_bus_message
*m
, const char *destination
, uint64_t *serial
);
121 int sd_bus_call(sd_bus
*bus
, sd_bus_message
*m
, uint64_t usec
, sd_bus_error
*ret_error
, sd_bus_message
**reply
);
122 int sd_bus_call_async(sd_bus
*bus
, sd_bus_message
*m
, sd_bus_message_handler_t callback
, void *userdata
, uint64_t usec
, uint64_t *serial
);
123 int sd_bus_call_async_cancel(sd_bus
*bus
, uint64_t serial
);
125 int sd_bus_get_fd(sd_bus
*bus
);
126 int sd_bus_get_events(sd_bus
*bus
);
127 int sd_bus_get_timeout(sd_bus
*bus
, uint64_t *timeout_usec
);
128 int sd_bus_process(sd_bus
*bus
, sd_bus_message
**r
);
129 int sd_bus_wait(sd_bus
*bus
, uint64_t timeout_usec
);
130 int sd_bus_flush(sd_bus
*bus
);
132 sd_bus_message
* sd_bus_get_current(sd_bus
*bus
);
133 int sd_bus_get_tid(sd_bus
*bus
, pid_t
*tid
);
135 int sd_bus_attach_event(sd_bus
*bus
, sd_event
*e
, int priority
);
136 int sd_bus_detach_event(sd_bus
*bus
);
137 sd_event
*sd_bus_get_event(sd_bus
*bus
);
139 int sd_bus_add_filter(sd_bus
*bus
, sd_bus_message_handler_t callback
, void *userdata
);
140 int sd_bus_remove_filter(sd_bus
*bus
, sd_bus_message_handler_t callback
, void *userdata
);
142 int sd_bus_add_match(sd_bus
*bus
, const char *match
, sd_bus_message_handler_t callback
, void *userdata
);
143 int sd_bus_remove_match(sd_bus
*bus
, const char *match
, sd_bus_message_handler_t callback
, void *userdata
);
145 int sd_bus_add_object(sd_bus
*bus
, const char *path
, sd_bus_message_handler_t callback
, void *userdata
);
146 int sd_bus_remove_object(sd_bus
*bus
, const char *path
, sd_bus_message_handler_t callback
, void *userdata
);
148 int sd_bus_add_fallback(sd_bus
*bus
, const char *prefix
, sd_bus_message_handler_t callback
, void *userdata
);
149 int sd_bus_remove_fallback(sd_bus
*bus
, const char *prefix
, sd_bus_message_handler_t callback
, void *userdata
);
151 int sd_bus_add_object_vtable(sd_bus
*bus
, const char *path
, const char *interface
, const sd_bus_vtable
*vtable
, void *userdata
);
152 int sd_bus_remove_object_vtable(sd_bus
*bus
, const char *path
, const char *interface
, const sd_bus_vtable
*vtable
, void *userdata
);
154 int sd_bus_add_fallback_vtable(sd_bus
*bus
, const char *path
, const char *interface
, const sd_bus_vtable
*vtable
, sd_bus_object_find_t find
, void *userdata
);
155 int sd_bus_remove_fallback_vtable(sd_bus
*bus
, const char *path
, const char *interface
, const sd_bus_vtable
*vtable
, sd_bus_object_find_t find
, void *userdata
);
157 int sd_bus_add_node_enumerator(sd_bus
*bus
, const char *path
, sd_bus_node_enumerator_t callback
, void *userdata
);
158 int sd_bus_remove_node_enumerator(sd_bus
*bus
, const char *path
, sd_bus_node_enumerator_t callback
, void *userdata
);
160 int sd_bus_add_object_manager(sd_bus
*bus
, const char *path
);
161 int sd_bus_remove_object_manager(sd_bus
*bus
, const char *path
);
164 int sd_bus_message_new_signal(sd_bus
*bus
, const char *path
, const char *interface
, const char *member
, sd_bus_message
**m
);
165 int sd_bus_message_new_method_call(sd_bus
*bus
, const char *destination
, const char *path
, const char *interface
, const char *member
, sd_bus_message
**m
);
166 int sd_bus_message_new_method_return(sd_bus_message
*call
, sd_bus_message
**m
);
167 int sd_bus_message_new_method_error(sd_bus_message
*call
, const sd_bus_error
*e
, sd_bus_message
**m
);
168 int sd_bus_message_new_method_errorf(sd_bus_message
*call
, sd_bus_message
**m
, const char *name
, const char *format
, ...) _sd_printf_(4, 0);
169 int sd_bus_message_new_method_errno(sd_bus_message
*call
, int error
, const sd_bus_error
*e
, sd_bus_message
**m
);
170 int sd_bus_message_new_method_errnof(sd_bus_message
*call
, sd_bus_message
**m
, int error
, const char *format
, ...) _sd_printf_(4, 0);
172 sd_bus_message
* sd_bus_message_ref(sd_bus_message
*m
);
173 sd_bus_message
* sd_bus_message_unref(sd_bus_message
*m
);
175 sd_bus
* sd_bus_message_get_bus(sd_bus_message
*m
);
177 int sd_bus_message_get_type(sd_bus_message
*m
, uint8_t *type
);
178 int sd_bus_message_get_serial(sd_bus_message
*m
, uint64_t *serial
);
179 int sd_bus_message_get_reply_serial(sd_bus_message
*m
, uint64_t *serial
);
180 int sd_bus_message_get_no_reply(sd_bus_message
*m
);
181 int sd_bus_message_get_no_auto_start(sd_bus_message
*m
);
183 const char *sd_bus_message_get_signature(sd_bus_message
*m
, int complete
);
184 const char *sd_bus_message_get_path(sd_bus_message
*m
);
185 const char *sd_bus_message_get_interface(sd_bus_message
*m
);
186 const char *sd_bus_message_get_member(sd_bus_message
*m
);
187 const char *sd_bus_message_get_destination(sd_bus_message
*m
);
188 const char *sd_bus_message_get_sender(sd_bus_message
*m
);
189 const sd_bus_error
*sd_bus_message_get_error(sd_bus_message
*m
);
190 int sd_bus_message_get_errno(sd_bus_message
*m
);
192 int sd_bus_message_get_monotonic_timestamp(sd_bus_message
*m
, uint64_t *usec
);
193 int sd_bus_message_get_realtime_timestamp(sd_bus_message
*m
, uint64_t *usec
);
194 sd_bus_creds
*sd_bus_message_get_creds(sd_bus_message
*m
); /* do not unref the result */
196 int sd_bus_message_is_signal(sd_bus_message
*m
, const char *interface
, const char *member
);
197 int sd_bus_message_is_method_call(sd_bus_message
*m
, const char *interface
, const char *member
);
198 int sd_bus_message_is_method_error(sd_bus_message
*m
, const char *name
);
200 int sd_bus_message_set_no_reply(sd_bus_message
*m
, int b
);
201 int sd_bus_message_set_no_auto_start(sd_bus_message
*m
, int b
);
202 int sd_bus_message_set_destination(sd_bus_message
*m
, const char *destination
);
204 int sd_bus_message_append(sd_bus_message
*m
, const char *types
, ...);
205 int sd_bus_message_append_basic(sd_bus_message
*m
, char type
, const void *p
);
206 int sd_bus_message_append_array(sd_bus_message
*m
, char type
, const void *ptr
, size_t size
);
207 int sd_bus_message_append_array_space(sd_bus_message
*m
, char type
, size_t size
, void **ptr
);
208 int sd_bus_message_append_array_iovec(sd_bus_message
*m
, char type
, const struct iovec
*iov
, unsigned n
);
209 int sd_bus_message_append_array_memfd(sd_bus_message
*m
, char type
, sd_memfd
*memfd
);
210 int sd_bus_message_append_string_space(sd_bus_message
*m
, size_t size
, char **s
);
211 int sd_bus_message_append_string_iovec(sd_bus_message
*m
, const struct iovec
*iov
, unsigned n
);
212 int sd_bus_message_append_string_memfd(sd_bus_message
*m
, sd_memfd
* memfd
);
213 int sd_bus_message_append_strv(sd_bus_message
*m
, char **l
);
214 int sd_bus_message_open_container(sd_bus_message
*m
, char type
, const char *contents
);
215 int sd_bus_message_close_container(sd_bus_message
*m
);
216 int sd_bus_message_copy(sd_bus_message
*m
, sd_bus_message
*source
, int all
);
218 int sd_bus_message_read(sd_bus_message
*m
, const char *types
, ...);
219 int sd_bus_message_read_basic(sd_bus_message
*m
, char type
, void *p
);
220 int sd_bus_message_read_array(sd_bus_message
*m
, char type
, const void **ptr
, size_t *size
);
221 int sd_bus_message_read_strv(sd_bus_message
*m
, char ***l
); /* free the result! */
222 int sd_bus_message_skip(sd_bus_message
*m
, const char *types
);
223 int sd_bus_message_enter_container(sd_bus_message
*m
, char type
, const char *contents
);
224 int sd_bus_message_exit_container(sd_bus_message
*m
);
225 int sd_bus_message_peek_type(sd_bus_message
*m
, char *type
, const char **contents
);
226 int sd_bus_message_verify_type(sd_bus_message
*m
, char type
, const char *contents
);
227 int sd_bus_message_at_end(sd_bus_message
*m
, int complete
);
228 int sd_bus_message_rewind(sd_bus_message
*m
, int complete
);
232 int sd_bus_get_unique_name(sd_bus
*bus
, const char **unique
);
233 int sd_bus_request_name(sd_bus
*bus
, const char *name
, int flags
);
234 int sd_bus_release_name(sd_bus
*bus
, const char *name
);
235 int sd_bus_list_names(sd_bus
*bus
, char ***l
);
236 int sd_bus_get_owner(sd_bus
*bus
, const char *name
, char **owner
); /* free the result! */
237 int sd_bus_get_owner_creds(sd_bus
*bus
, const char *name
, uint64_t mask
, sd_bus_creds
**creds
); /* unref the result! */
238 int sd_bus_get_owner_machine_id(sd_bus
*bus
, const char *name
, sd_id128_t
*machine
);
240 /* Convenience calls */
242 int sd_bus_call_method(sd_bus
*bus
, const char *destination
, const char *path
, const char *interface
, const char *member
, sd_bus_error
*ret_error
, sd_bus_message
**reply
, const char *types
, ...);
243 int sd_bus_get_property(sd_bus
*bus
, const char *destination
, const char *path
, const char *interface
, const char *member
, sd_bus_error
*ret_error
, sd_bus_message
**reply
, const char *type
);
244 int sd_bus_get_property_trivial(sd_bus
*bus
, const char *destination
, const char *path
, const char *interface
, const char *member
, sd_bus_error
*ret_error
, char type
, void *ret_ptr
);
245 int sd_bus_get_property_string(sd_bus
*bus
, const char *destination
, const char *path
, const char *interface
, const char *member
, sd_bus_error
*ret_error
, char **ret
); /* free the result! */
246 int sd_bus_get_property_strv(sd_bus
*bus
, const char *destination
, const char *path
, const char *interface
, const char *member
, sd_bus_error
*ret_error
, char ***ret
); /* free the result! */
247 int sd_bus_set_property(sd_bus
*bus
, const char *destination
, const char *path
, const char *interface
, const char *member
, sd_bus_error
*ret_error
, const char *ret_type
, ...);
249 int sd_bus_reply_method_return(sd_bus_message
*call
, const char *types
, ...);
250 int sd_bus_reply_method_error(sd_bus_message
*call
, const sd_bus_error
*e
);
251 int sd_bus_reply_method_errorf(sd_bus_message
*call
, const char *name
, const char *format
, ...) _sd_printf_(3, 0);
252 int sd_bus_reply_method_errno(sd_bus_message
*call
, int error
, const sd_bus_error
*e
);
253 int sd_bus_reply_method_errnof(sd_bus_message
*call
, int error
, const char *format
, ...) _sd_printf_(3, 0);
255 int sd_bus_emit_signal(sd_bus
*bus
, const char *path
, const char *interface
, const char *member
, const char *types
, ...);
257 int sd_bus_emit_properties_changed_strv(sd_bus
*bus
, const char *path
, const char *interface
, char **names
);
258 int sd_bus_emit_properties_changed(sd_bus
*bus
, const char *path
, const char *interface
, const char *name
, ...) _sd_sentinel_
;
260 int sd_bus_emit_interfaces_added_strv(sd_bus
*bus
, const char *path
, char **interfaces
);
261 int sd_bus_emit_interfaces_added(sd_bus
*bus
, const char *path
, const char *interface
, ...) _sd_sentinel_
;
262 int sd_bus_emit_interfaces_removed_strv(sd_bus
*bus
, const char *path
, char **interfaces
);
263 int sd_bus_emit_interfaces_removed(sd_bus
*bus
, const char *path
, const char *interface
, ...) _sd_sentinel_
;
265 int sd_bus_query_sender_creds(sd_bus_message
*call
, uint64_t mask
, sd_bus_creds
**creds
);
267 /* Credential handling */
269 int sd_bus_creds_new_from_pid(pid_t pid
, uint64_t creds_mask
, sd_bus_creds
**ret
);
270 sd_bus_creds
*sd_bus_creds_ref(sd_bus_creds
*c
);
271 sd_bus_creds
*sd_bus_creds_unref(sd_bus_creds
*c
);
272 uint64_t sd_bus_creds_get_mask(sd_bus_creds
*c
);
274 int sd_bus_creds_extend(sd_bus_creds
*c
, uint64_t creds_mask
, sd_bus_creds
**ret
); /* unref the result */
276 int sd_bus_creds_get_uid(sd_bus_creds
*c
, uid_t
*uid
);
277 int sd_bus_creds_get_gid(sd_bus_creds
*c
, gid_t
*gid
);
278 int sd_bus_creds_get_pid(sd_bus_creds
*c
, pid_t
*pid
);
279 int sd_bus_creds_get_pid_starttime(sd_bus_creds
*c
, uint64_t *usec
);
280 int sd_bus_creds_get_tid(sd_bus_creds
*c
, pid_t
*tid
);
281 int sd_bus_creds_get_comm(sd_bus_creds
*c
, const char **r
);
282 int sd_bus_creds_get_tid_comm(sd_bus_creds
*c
, const char **r
);
283 int sd_bus_creds_get_exe(sd_bus_creds
*c
, const char **r
);
284 int sd_bus_creds_get_cmdline(sd_bus_creds
*c
, char ***cmdline
);
285 int sd_bus_creds_get_cgroup(sd_bus_creds
*c
, const char **r
);
286 int sd_bus_creds_get_unit(sd_bus_creds
*c
, const char **unit
);
287 int sd_bus_creds_get_user_unit(sd_bus_creds
*c
, const char **unit
);
288 int sd_bus_creds_get_slice(sd_bus_creds
*c
, const char **slice
);
289 int sd_bus_creds_get_session(sd_bus_creds
*c
, const char **session
);
290 int sd_bus_creds_get_owner_uid(sd_bus_creds
*c
, uid_t
*uid
);
291 int sd_bus_creds_has_effective_cap(sd_bus_creds
*c
, int capability
);
292 int sd_bus_creds_has_permitted_cap(sd_bus_creds
*c
, int capability
);
293 int sd_bus_creds_has_inheritable_cap(sd_bus_creds
*c
, int capability
);
294 int sd_bus_creds_has_bounding_cap(sd_bus_creds
*c
, int capability
);
295 int sd_bus_creds_get_selinux_context(sd_bus_creds
*c
, const char **r
);
296 int sd_bus_creds_get_audit_session_id(sd_bus_creds
*c
, uint32_t *sessionid
);
297 int sd_bus_creds_get_audit_login_uid(sd_bus_creds
*c
, uid_t
*loginuid
);
299 /* Error structures */
301 #define SD_BUS_ERROR_MAKE_CONST(name, message) ((sd_bus_error) {(name), (message), 0})
302 #define SD_BUS_ERROR_NULL SD_BUS_ERROR_MAKE_CONST(NULL, NULL)
304 void sd_bus_error_free(sd_bus_error
*e
);
305 int sd_bus_error_set(sd_bus_error
*e
, const char *name
, const char *message
);
306 int sd_bus_error_setf(sd_bus_error
*e
, const char *name
, const char *format
, ...) _sd_printf_(3, 0);
307 int sd_bus_error_set_const(sd_bus_error
*e
, const char *name
, const char *message
);
308 int sd_bus_error_set_errno(sd_bus_error
*e
, int error
);
309 int sd_bus_error_set_errnof(sd_bus_error
*e
, int error
, const char *format
, ...) _sd_printf_(3, 0);
310 int sd_bus_error_get_errno(const sd_bus_error
*e
);
311 int sd_bus_error_copy(sd_bus_error
*dest
, const sd_bus_error
*e
);
312 int sd_bus_error_is_set(const sd_bus_error
*e
);
313 int sd_bus_error_has_name(const sd_bus_error
*e
, const char *name
);
315 /* Auxiliary macros */
317 #define SD_BUS_MESSAGE_APPEND_ID128(x) 16, \
318 (x).bytes[0], (x).bytes[1], (x).bytes[2], (x).bytes[3], \
319 (x).bytes[4], (x).bytes[5], (x).bytes[6], (x).bytes[7], \
320 (x).bytes[8], (x).bytes[9], (x).bytes[10], (x).bytes[11], \
321 (x).bytes[12], (x).bytes[13], (x).bytes[14], (x).bytes[15]
323 #define SD_BUS_MESSAGE_READ_ID128(x) 16, \
324 &(x).bytes[0], &(x).bytes[1], &(x).bytes[2], &(x).bytes[3], \
325 &(x).bytes[4], &(x).bytes[5], &(x).bytes[6], &(x).bytes[7], \
326 &(x).bytes[8], &(x).bytes[9], &(x).bytes[10], &(x).bytes[11], \
327 &(x).bytes[12], &(x).bytes[13], &(x).bytes[14], &(x).bytes[15]
331 char *sd_bus_label_escape(const char *s
);
332 char *sd_bus_label_unescape(const char *f
);
334 _SD_END_DECLARATIONS
;