src/systemd/sd-bus.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #ifndef foosdbushfoo
   3 #define foosdbushfoo
   4
   5 /***
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <inttypes.h>
  21 #include <stdarg.h>
  22 #include <sys/types.h>
  23 #include <sys/uio.h>
  24
  25 #include "sd-event.h"
  26 #include "sd-id128.h"
  27
  28 #include "_sd-common.h"
  29
  30 _SD_BEGIN_DECLARATIONS;
  31
  32 #define SD_BUS_DEFAULT ((sd_bus *) 1)
  33 #define SD_BUS_DEFAULT_USER ((sd_bus *) 2)
  34 #define SD_BUS_DEFAULT_SYSTEM ((sd_bus *) 3)
  35
  36 /* https://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-marshaling-signature */
  37 #define SD_BUS_MAXIMUM_SIGNATURE_LENGTH 255
  38
  39 /* Types */
  40
  41 typedef struct sd_bus sd_bus;
  42 typedef struct sd_bus_message sd_bus_message;
  43 typedef struct sd_bus_slot sd_bus_slot;
  44 typedef struct sd_bus_creds sd_bus_creds;
  45 typedef struct sd_bus_track sd_bus_track;
  46
  47 typedef struct {
  48         const char *name;
  49         const char *message;
  50         int _need_free;
  51 } sd_bus_error;
  52
  53 typedef struct {
  54         const char* name;
  55         int code;
  56 } sd_bus_error_map;
  57
  58 /* Flags */
  59
  60 enum {
  61         SD_BUS_CREDS_PID                = 1ULL << 0,
  62         SD_BUS_CREDS_TID                = 1ULL << 1,
  63         SD_BUS_CREDS_PPID               = 1ULL << 2,
  64         SD_BUS_CREDS_UID                = 1ULL << 3,
  65         SD_BUS_CREDS_EUID               = 1ULL << 4,
  66         SD_BUS_CREDS_SUID               = 1ULL << 5,
  67         SD_BUS_CREDS_FSUID              = 1ULL << 6,
  68         SD_BUS_CREDS_GID                = 1ULL << 7,
  69         SD_BUS_CREDS_EGID               = 1ULL << 8,
  70         SD_BUS_CREDS_SGID               = 1ULL << 9,
  71         SD_BUS_CREDS_FSGID              = 1ULL << 10,
  72         SD_BUS_CREDS_SUPPLEMENTARY_GIDS = 1ULL << 11,
  73         SD_BUS_CREDS_COMM               = 1ULL << 12,
  74         SD_BUS_CREDS_TID_COMM           = 1ULL << 13,
  75         SD_BUS_CREDS_EXE                = 1ULL << 14,
  76         SD_BUS_CREDS_CMDLINE            = 1ULL << 15,
  77         SD_BUS_CREDS_CGROUP             = 1ULL << 16,
  78         SD_BUS_CREDS_UNIT               = 1ULL << 17,
  79         SD_BUS_CREDS_SLICE              = 1ULL << 18,
  80         SD_BUS_CREDS_USER_UNIT          = 1ULL << 19,
  81         SD_BUS_CREDS_USER_SLICE         = 1ULL << 20,
  82         SD_BUS_CREDS_SESSION            = 1ULL << 21,
  83         SD_BUS_CREDS_OWNER_UID          = 1ULL << 22,
  84         SD_BUS_CREDS_EFFECTIVE_CAPS     = 1ULL << 23,
  85         SD_BUS_CREDS_PERMITTED_CAPS     = 1ULL << 24,
  86         SD_BUS_CREDS_INHERITABLE_CAPS   = 1ULL << 25,
  87         SD_BUS_CREDS_BOUNDING_CAPS      = 1ULL << 26,
  88         SD_BUS_CREDS_SELINUX_CONTEXT    = 1ULL << 27,
  89         SD_BUS_CREDS_AUDIT_SESSION_ID   = 1ULL << 28,
  90         SD_BUS_CREDS_AUDIT_LOGIN_UID    = 1ULL << 29,
  91         SD_BUS_CREDS_TTY                = 1ULL << 30,
  92         SD_BUS_CREDS_UNIQUE_NAME        = 1ULL << 31,
  93         SD_BUS_CREDS_WELL_KNOWN_NAMES   = 1ULL << 32,
  94         SD_BUS_CREDS_DESCRIPTION        = 1ULL << 33,
  95         SD_BUS_CREDS_AUGMENT            = 1ULL << 63, /* special flag, if on sd-bus will augment creds struct, in a potentially race-full way. */
  96         _SD_BUS_CREDS_ALL               = (1ULL << 34) -1
  97 };
  98
  99 enum {
 100         SD_BUS_NAME_REPLACE_EXISTING  = 1ULL << 0,
 101         SD_BUS_NAME_ALLOW_REPLACEMENT = 1ULL << 1,
 102         SD_BUS_NAME_QUEUE             = 1ULL << 2
 103 };
 104
 105 /* Callbacks */
 106
 107 typedef int (*sd_bus_message_handler_t)(sd_bus_message *m, void *userdata, sd_bus_error *ret_error);
 108 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);
 109 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);
 110 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);
 111 typedef int (*sd_bus_node_enumerator_t) (sd_bus *bus, const char *prefix, void *userdata, char ***ret_nodes, sd_bus_error *ret_error);
 112 typedef int (*sd_bus_track_handler_t) (sd_bus_track *track, void *userdata);
 113 typedef _sd_destroy_t sd_bus_destroy_t;
 114
 115 #include "sd-bus-protocol.h"
 116 #include "sd-bus-vtable.h"
 117
 118 /* Connections */
 119
 120 int sd_bus_default(sd_bus **ret);
 121 int sd_bus_default_user(sd_bus **ret);
 122 int sd_bus_default_system(sd_bus **ret);
 123
 124 int sd_bus_open(sd_bus **ret);
 125 int sd_bus_open_with_description(sd_bus **ret, const char *description);
 126 int sd_bus_open_user(sd_bus **ret);
 127 int sd_bus_open_user_with_description(sd_bus **ret, const char *description);
 128 int sd_bus_open_system(sd_bus **ret);
 129 int sd_bus_open_system_with_description(sd_bus **ret, const char *description);
 130 int sd_bus_open_system_remote(sd_bus **ret, const char *host);
 131 int sd_bus_open_system_machine(sd_bus **ret, const char *machine);
 132
 133 int sd_bus_new(sd_bus **ret);
 134
 135 int sd_bus_set_address(sd_bus *bus, const char *address);
 136 int sd_bus_set_fd(sd_bus *bus, int input_fd, int output_fd);
 137 int sd_bus_set_exec(sd_bus *bus, const char *path, char *const argv[]);
 138 int sd_bus_get_address(sd_bus *bus, const char **address);
 139 int sd_bus_set_bus_client(sd_bus *bus, int b);
 140 int sd_bus_is_bus_client(sd_bus *bus);
 141 int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t bus_id);
 142 int sd_bus_is_server(sd_bus *bus);
 143 int sd_bus_set_anonymous(sd_bus *bus, int b);
 144 int sd_bus_is_anonymous(sd_bus *bus);
 145 int sd_bus_set_trusted(sd_bus *bus, int b);
 146 int sd_bus_is_trusted(sd_bus *bus);
 147 int sd_bus_set_monitor(sd_bus *bus, int b);
 148 int sd_bus_is_monitor(sd_bus *bus);
 149 int sd_bus_set_description(sd_bus *bus, const char *description);
 150 int sd_bus_get_description(sd_bus *bus, const char **description);
 151 int sd_bus_negotiate_creds(sd_bus *bus, int b, uint64_t creds_mask);
 152 int sd_bus_negotiate_timestamp(sd_bus *bus, int b);
 153 int sd_bus_negotiate_fds(sd_bus *bus, int b);
 154 int sd_bus_can_send(sd_bus *bus, char type);
 155 int sd_bus_get_creds_mask(sd_bus *bus, uint64_t *creds_mask);
 156 int sd_bus_set_allow_interactive_authorization(sd_bus *bus, int b);
 157 int sd_bus_get_allow_interactive_authorization(sd_bus *bus);
 158 int sd_bus_set_exit_on_disconnect(sd_bus *bus, int b);
 159 int sd_bus_get_exit_on_disconnect(sd_bus *bus);
 160 int sd_bus_set_close_on_exit(sd_bus *bus, int b);
 161 int sd_bus_get_close_on_exit(sd_bus *bus);
 162 int sd_bus_set_watch_bind(sd_bus *bus, int b);
 163 int sd_bus_get_watch_bind(sd_bus *bus);
 164 int sd_bus_set_connected_signal(sd_bus *bus, int b);
 165 int sd_bus_get_connected_signal(sd_bus *bus);
 166 int sd_bus_set_sender(sd_bus *bus, const char *sender);
 167 int sd_bus_get_sender(sd_bus *bus, const char **ret);
 168
 169 int sd_bus_start(sd_bus *bus);
 170
 171 int sd_bus_try_close(sd_bus *bus);
 172 void sd_bus_close(sd_bus *bus);
 173
 174 sd_bus *sd_bus_ref(sd_bus *bus);
 175 sd_bus *sd_bus_unref(sd_bus *bus);
 176 sd_bus *sd_bus_close_unref(sd_bus *bus);
 177 sd_bus *sd_bus_flush_close_unref(sd_bus *bus);
 178
 179 void sd_bus_default_flush_close(void);
 180
 181 int sd_bus_is_open(sd_bus *bus);
 182 int sd_bus_is_ready(sd_bus *bus);
 183
 184 int sd_bus_get_bus_id(sd_bus *bus, sd_id128_t *id);
 185 int sd_bus_get_scope(sd_bus *bus, const char **scope);
 186 int sd_bus_get_tid(sd_bus *bus, pid_t *tid);
 187 int sd_bus_get_owner_creds(sd_bus *bus, uint64_t creds_mask, sd_bus_creds **ret);
 188
 189 int sd_bus_send(sd_bus *bus, sd_bus_message *m, uint64_t *cookie);
 190 int sd_bus_send_to(sd_bus *bus, sd_bus_message *m, const char *destination, uint64_t *cookie);
 191 int sd_bus_call(sd_bus *bus, sd_bus_message *m, uint64_t usec, sd_bus_error *ret_error, sd_bus_message **reply);
 192 int sd_bus_call_async(sd_bus *bus, sd_bus_slot **slot, sd_bus_message *m, sd_bus_message_handler_t callback, void *userdata, uint64_t usec);
 193
 194 int sd_bus_get_fd(sd_bus *bus);
 195 int sd_bus_get_events(sd_bus *bus);
 196 int sd_bus_get_timeout(sd_bus *bus, uint64_t *timeout_usec);
 197 int sd_bus_process(sd_bus *bus, sd_bus_message **r);
 198 int sd_bus_process_priority(sd_bus *bus, int64_t max_priority, sd_bus_message **r);
 199 int sd_bus_wait(sd_bus *bus, uint64_t timeout_usec);
 200 int sd_bus_flush(sd_bus *bus);
 201
 202 sd_bus_slot* sd_bus_get_current_slot(sd_bus *bus);
 203 sd_bus_message* sd_bus_get_current_message(sd_bus *bus);
 204 sd_bus_message_handler_t sd_bus_get_current_handler(sd_bus *bus);
 205 void* sd_bus_get_current_userdata(sd_bus *bus);
 206
 207 int sd_bus_attach_event(sd_bus *bus, sd_event *e, int priority);
 208 int sd_bus_detach_event(sd_bus *bus);
 209 sd_event *sd_bus_get_event(sd_bus *bus);
 210
 211 int sd_bus_get_n_queued_read(sd_bus *bus, uint64_t *ret);
 212 int sd_bus_get_n_queued_write(sd_bus *bus, uint64_t *ret);
 213
 214 int sd_bus_set_method_call_timeout(sd_bus *bus, uint64_t usec);
 215 int sd_bus_get_method_call_timeout(sd_bus *bus, uint64_t *ret);
 216
 217 int sd_bus_add_filter(sd_bus *bus, sd_bus_slot **slot, sd_bus_message_handler_t callback, void *userdata);
 218 int sd_bus_add_match(sd_bus *bus, sd_bus_slot **slot, const char *match, sd_bus_message_handler_t callback, void *userdata);
 219 int sd_bus_add_match_async(sd_bus *bus, sd_bus_slot **slot, const char *match, sd_bus_message_handler_t callback, sd_bus_message_handler_t install_callback, void *userdata);
 220 int sd_bus_add_object(sd_bus *bus, sd_bus_slot **slot, const char *path, sd_bus_message_handler_t callback, void *userdata);
 221 int sd_bus_add_fallback(sd_bus *bus, sd_bus_slot **slot, const char *prefix, sd_bus_message_handler_t callback, void *userdata);
 222 int sd_bus_add_object_vtable(sd_bus *bus, sd_bus_slot **slot, const char *path, const char *interface, const sd_bus_vtable *vtable, void *userdata);
 223 int sd_bus_add_fallback_vtable(sd_bus *bus, sd_bus_slot **slot, const char *prefix, const char *interface, const sd_bus_vtable *vtable, sd_bus_object_find_t find, void *userdata);
 224 int sd_bus_add_node_enumerator(sd_bus *bus, sd_bus_slot **slot, const char *path, sd_bus_node_enumerator_t callback, void *userdata);
 225 int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot, const char *path);
 226
 227 /* Slot object */
 228
 229 sd_bus_slot* sd_bus_slot_ref(sd_bus_slot *slot);
 230 sd_bus_slot* sd_bus_slot_unref(sd_bus_slot *slot);
 231
 232 sd_bus* sd_bus_slot_get_bus(sd_bus_slot *slot);
 233 void *sd_bus_slot_get_userdata(sd_bus_slot *slot);
 234 void *sd_bus_slot_set_userdata(sd_bus_slot *slot, void *userdata);
 235 int sd_bus_slot_set_description(sd_bus_slot *slot, const char *description);
 236 int sd_bus_slot_get_description(sd_bus_slot *slot, const char **description);
 237 int sd_bus_slot_get_floating(sd_bus_slot *slot);
 238 int sd_bus_slot_set_floating(sd_bus_slot *slot, int b);
 239 int sd_bus_slot_set_destroy_callback(sd_bus_slot *s, sd_bus_destroy_t callback);
 240 int sd_bus_slot_get_destroy_callback(sd_bus_slot *s, sd_bus_destroy_t *callback);
 241
 242 sd_bus_message* sd_bus_slot_get_current_message(sd_bus_slot *slot);
 243 sd_bus_message_handler_t sd_bus_slot_get_current_handler(sd_bus_slot *slot);
 244 void *sd_bus_slot_get_current_userdata(sd_bus_slot *slot);
 245
 246 /* Message object */
 247
 248 int sd_bus_message_new(sd_bus *bus, sd_bus_message **m, uint8_t type);
 249 int sd_bus_message_new_signal(sd_bus *bus, sd_bus_message **m, const char *path, const char *interface, const char *member);
 250 int sd_bus_message_new_method_call(sd_bus *bus, sd_bus_message **m, const char *destination, const char *path, const char *interface, const char *member);
 251 int sd_bus_message_new_method_return(sd_bus_message *call, sd_bus_message **m);
 252 int sd_bus_message_new_method_error(sd_bus_message *call, sd_bus_message **m, const sd_bus_error *e);
 253 int sd_bus_message_new_method_errorf(sd_bus_message *call, sd_bus_message **m, const char *name, const char *format, ...) _sd_printf_(4, 5);
 254 int sd_bus_message_new_method_errno(sd_bus_message *call, sd_bus_message **m, int error, const sd_bus_error *e);
 255 int sd_bus_message_new_method_errnof(sd_bus_message *call, sd_bus_message **m, int error, const char *format, ...) _sd_printf_(4, 5);
 256
 257 sd_bus_message* sd_bus_message_ref(sd_bus_message *m);
 258 sd_bus_message* sd_bus_message_unref(sd_bus_message *m);
 259
 260 int sd_bus_message_seal(sd_bus_message *m, uint64_t cookie, uint64_t timeout_usec);
 261
 262 int sd_bus_message_get_type(sd_bus_message *m, uint8_t *type);
 263 int sd_bus_message_get_cookie(sd_bus_message *m, uint64_t *cookie);
 264 int sd_bus_message_get_reply_cookie(sd_bus_message *m, uint64_t *cookie);
 265 int sd_bus_message_get_priority(sd_bus_message *m, int64_t *priority);
 266
 267 int sd_bus_message_get_expect_reply(sd_bus_message *m);
 268 int sd_bus_message_get_auto_start(sd_bus_message *m);
 269 int sd_bus_message_get_allow_interactive_authorization(sd_bus_message *m);
 270
 271 const char *sd_bus_message_get_signature(sd_bus_message *m, int complete);
 272 const char *sd_bus_message_get_path(sd_bus_message *m);
 273 const char *sd_bus_message_get_interface(sd_bus_message *m);
 274 const char *sd_bus_message_get_member(sd_bus_message *m);
 275 const char *sd_bus_message_get_destination(sd_bus_message *m);
 276 const char *sd_bus_message_get_sender(sd_bus_message *m);
 277 const sd_bus_error *sd_bus_message_get_error(sd_bus_message *m);
 278 int sd_bus_message_get_errno(sd_bus_message *m);
 279
 280 int sd_bus_message_get_monotonic_usec(sd_bus_message *m, uint64_t *usec);
 281 int sd_bus_message_get_realtime_usec(sd_bus_message *m, uint64_t *usec);
 282 int sd_bus_message_get_seqnum(sd_bus_message *m, uint64_t* seqnum);
 283
 284 sd_bus* sd_bus_message_get_bus(sd_bus_message *m);
 285 sd_bus_creds *sd_bus_message_get_creds(sd_bus_message *m); /* do not unref the result */
 286
 287 int sd_bus_message_is_signal(sd_bus_message *m, const char *interface, const char *member);
 288 int sd_bus_message_is_method_call(sd_bus_message *m, const char *interface, const char *member);
 289 int sd_bus_message_is_method_error(sd_bus_message *m, const char *name);
 290 int sd_bus_message_is_empty(sd_bus_message *m);
 291 int sd_bus_message_has_signature(sd_bus_message *m, const char *signature);
 292
 293 int sd_bus_message_set_expect_reply(sd_bus_message *m, int b);
 294 int sd_bus_message_set_auto_start(sd_bus_message *m, int b);
 295 int sd_bus_message_set_allow_interactive_authorization(sd_bus_message *m, int b);
 296
 297 int sd_bus_message_set_destination(sd_bus_message *m, const char *destination);
 298 int sd_bus_message_set_sender(sd_bus_message *m, const char *sender);
 299 int sd_bus_message_set_priority(sd_bus_message *m, int64_t priority);
 300
 301 int sd_bus_message_append(sd_bus_message *m, const char *types, ...);
 302 int sd_bus_message_appendv(sd_bus_message *m, const char *types, va_list ap);
 303 int sd_bus_message_append_basic(sd_bus_message *m, char type, const void *p);
 304 int sd_bus_message_append_array(sd_bus_message *m, char type, const void *ptr, size_t size);
 305 int sd_bus_message_append_array_space(sd_bus_message *m, char type, size_t size, void **ptr);
 306 int sd_bus_message_append_array_iovec(sd_bus_message *m, char type, const struct iovec *iov, unsigned n);
 307 int sd_bus_message_append_array_memfd(sd_bus_message *m, char type, int memfd, uint64_t offset, uint64_t size);
 308 int sd_bus_message_append_string_space(sd_bus_message *m, size_t size, char **s);
 309 int sd_bus_message_append_string_iovec(sd_bus_message *m, const struct iovec *iov, unsigned n);
 310 int sd_bus_message_append_string_memfd(sd_bus_message *m, int memfd, uint64_t offset, uint64_t size);
 311 int sd_bus_message_append_strv(sd_bus_message *m, char **l);
 312 int sd_bus_message_open_container(sd_bus_message *m, char type, const char *contents);
 313 int sd_bus_message_close_container(sd_bus_message *m);
 314 int sd_bus_message_copy(sd_bus_message *m, sd_bus_message *source, int all);
 315
 316 int sd_bus_message_read(sd_bus_message *m, const char *types, ...);
 317 int sd_bus_message_readv(sd_bus_message *m, const char *types, va_list ap);
 318 int sd_bus_message_read_basic(sd_bus_message *m, char type, void *p);
 319 int sd_bus_message_read_array(sd_bus_message *m, char type, const void **ptr, size_t *size);
 320 int sd_bus_message_read_strv(sd_bus_message *m, char ***l); /* free the result! */
 321 int sd_bus_message_skip(sd_bus_message *m, const char *types);
 322 int sd_bus_message_enter_container(sd_bus_message *m, char type, const char *contents);
 323 int sd_bus_message_exit_container(sd_bus_message *m);
 324 int sd_bus_message_peek_type(sd_bus_message *m, char *type, const char **contents);
 325 int sd_bus_message_verify_type(sd_bus_message *m, char type, const char *contents);
 326 int sd_bus_message_at_end(sd_bus_message *m, int complete);
 327 int sd_bus_message_rewind(sd_bus_message *m, int complete);
 328
 329 /* Bus management */
 330
 331 int sd_bus_get_unique_name(sd_bus *bus, const char **unique);
 332 int sd_bus_request_name(sd_bus *bus, const char *name, uint64_t flags);
 333 int sd_bus_request_name_async(sd_bus *bus, sd_bus_slot **ret_slot, const char *name, uint64_t flags, sd_bus_message_handler_t callback, void *userdata);
 334 int sd_bus_release_name(sd_bus *bus, const char *name);
 335 int sd_bus_release_name_async(sd_bus *bus, sd_bus_slot **ret_slot, const char *name, sd_bus_message_handler_t callback, void *userdata);
 336 int sd_bus_list_names(sd_bus *bus, char ***acquired, char ***activatable); /* free the results */
 337 int sd_bus_get_name_creds(sd_bus *bus, const char *name, uint64_t mask, sd_bus_creds **creds); /* unref the result! */
 338 int sd_bus_get_name_machine_id(sd_bus *bus, const char *name, sd_id128_t *machine);
 339
 340 /* Convenience calls */
 341
 342 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, ...);
 343 int sd_bus_call_method_async(sd_bus *bus, sd_bus_slot **slot, const char *destination, const char *path, const char *interface, const char *member, sd_bus_message_handler_t callback, void *userdata, const char *types, ...);
 344 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);
 345 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);
 346 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! */
 347 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! */
 348 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 *type, ...);
 349
 350 int sd_bus_reply_method_return(sd_bus_message *call, const char *types, ...);
 351 int sd_bus_reply_method_error(sd_bus_message *call, const sd_bus_error *e);
 352 int sd_bus_reply_method_errorf(sd_bus_message *call, const char *name, const char *format, ...) _sd_printf_(3, 4);
 353 int sd_bus_reply_method_errno(sd_bus_message *call, int error, const sd_bus_error *e);
 354 int sd_bus_reply_method_errnof(sd_bus_message *call, int error, const char *format, ...) _sd_printf_(3, 4);
 355
 356 int sd_bus_emit_signal(sd_bus *bus, const char *path, const char *interface, const char *member, const char *types, ...);
 357
 358 int sd_bus_emit_properties_changed_strv(sd_bus *bus, const char *path, const char *interface, char **names);
 359 int sd_bus_emit_properties_changed(sd_bus *bus, const char *path, const char *interface, const char *name, ...) _sd_sentinel_;
 360
 361 int sd_bus_emit_object_added(sd_bus *bus, const char *path);
 362 int sd_bus_emit_object_removed(sd_bus *bus, const char *path);
 363 int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces);
 364 int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) _sd_sentinel_;
 365 int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces);
 366 int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) _sd_sentinel_;
 367
 368 int sd_bus_query_sender_creds(sd_bus_message *call, uint64_t mask, sd_bus_creds **creds);
 369 int sd_bus_query_sender_privilege(sd_bus_message *call, int capability);
 370
 371 int sd_bus_match_signal(sd_bus *bus, sd_bus_slot **ret, const char *sender, const char *path, const char *interface, const char *member, sd_bus_message_handler_t callback, void *userdata);
 372 int sd_bus_match_signal_async(sd_bus *bus, sd_bus_slot **ret, const char *sender, const char *path, const char *interface, const char *member, sd_bus_message_handler_t match_callback, sd_bus_message_handler_t add_callback, void *userdata);
 373
 374 /* Credential handling */
 375
 376 int sd_bus_creds_new_from_pid(sd_bus_creds **ret, pid_t pid, uint64_t creds_mask);
 377 sd_bus_creds *sd_bus_creds_ref(sd_bus_creds *c);
 378 sd_bus_creds *sd_bus_creds_unref(sd_bus_creds *c);
 379 uint64_t sd_bus_creds_get_mask(const sd_bus_creds *c);
 380 uint64_t sd_bus_creds_get_augmented_mask(const sd_bus_creds *c);
 381
 382 int sd_bus_creds_get_pid(sd_bus_creds *c, pid_t *pid);
 383 int sd_bus_creds_get_ppid(sd_bus_creds *c, pid_t *ppid);
 384 int sd_bus_creds_get_tid(sd_bus_creds *c, pid_t *tid);
 385 int sd_bus_creds_get_uid(sd_bus_creds *c, uid_t *uid);
 386 int sd_bus_creds_get_euid(sd_bus_creds *c, uid_t *euid);
 387 int sd_bus_creds_get_suid(sd_bus_creds *c, uid_t *suid);
 388 int sd_bus_creds_get_fsuid(sd_bus_creds *c, uid_t *fsuid);
 389 int sd_bus_creds_get_gid(sd_bus_creds *c, gid_t *gid);
 390 int sd_bus_creds_get_egid(sd_bus_creds *c, gid_t *egid);
 391 int sd_bus_creds_get_sgid(sd_bus_creds *c, gid_t *sgid);
 392 int sd_bus_creds_get_fsgid(sd_bus_creds *c, gid_t *fsgid);
 393 int sd_bus_creds_get_supplementary_gids(sd_bus_creds *c, const gid_t **gids);
 394 int sd_bus_creds_get_comm(sd_bus_creds *c, const char **comm);
 395 int sd_bus_creds_get_tid_comm(sd_bus_creds *c, const char **comm);
 396 int sd_bus_creds_get_exe(sd_bus_creds *c, const char **exe);
 397 int sd_bus_creds_get_cmdline(sd_bus_creds *c, char ***cmdline);
 398 int sd_bus_creds_get_cgroup(sd_bus_creds *c, const char **cgroup);
 399 int sd_bus_creds_get_unit(sd_bus_creds *c, const char **unit);
 400 int sd_bus_creds_get_slice(sd_bus_creds *c, const char **slice);
 401 int sd_bus_creds_get_user_unit(sd_bus_creds *c, const char **unit);
 402 int sd_bus_creds_get_user_slice(sd_bus_creds *c, const char **slice);
 403 int sd_bus_creds_get_session(sd_bus_creds *c, const char **session);
 404 int sd_bus_creds_get_owner_uid(sd_bus_creds *c, uid_t *uid);
 405 int sd_bus_creds_has_effective_cap(sd_bus_creds *c, int capability);
 406 int sd_bus_creds_has_permitted_cap(sd_bus_creds *c, int capability);
 407 int sd_bus_creds_has_inheritable_cap(sd_bus_creds *c, int capability);
 408 int sd_bus_creds_has_bounding_cap(sd_bus_creds *c, int capability);
 409 int sd_bus_creds_get_selinux_context(sd_bus_creds *c, const char **context);
 410 int sd_bus_creds_get_audit_session_id(sd_bus_creds *c, uint32_t *sessionid);
 411 int sd_bus_creds_get_audit_login_uid(sd_bus_creds *c, uid_t *loginuid);
 412 int sd_bus_creds_get_tty(sd_bus_creds *c, const char **tty);
 413 int sd_bus_creds_get_unique_name(sd_bus_creds *c, const char **name);
 414 int sd_bus_creds_get_well_known_names(sd_bus_creds *c, char ***names);
 415 int sd_bus_creds_get_description(sd_bus_creds *c, const char **name);
 416
 417 /* Error structures */
 418
 419 #define SD_BUS_ERROR_MAKE_CONST(name, message) ((const sd_bus_error) {(name), (message), 0})
 420 #define SD_BUS_ERROR_NULL SD_BUS_ERROR_MAKE_CONST(NULL, NULL)
 421
 422 void sd_bus_error_free(sd_bus_error *e);
 423 int sd_bus_error_set(sd_bus_error *e, const char *name, const char *message);
 424 int sd_bus_error_setf(sd_bus_error *e, const char *name, const char *format, ...)  _sd_printf_(3, 4);
 425 int sd_bus_error_set_const(sd_bus_error *e, const char *name, const char *message);
 426 int sd_bus_error_set_errno(sd_bus_error *e, int error);
 427 int sd_bus_error_set_errnof(sd_bus_error *e, int error, const char *format, ...) _sd_printf_(3, 4);
 428 int sd_bus_error_set_errnofv(sd_bus_error *e, int error, const char *format, va_list ap) _sd_printf_(3,0);
 429 int sd_bus_error_get_errno(const sd_bus_error *e);
 430 int sd_bus_error_copy(sd_bus_error *dest, const sd_bus_error *e);
 431 int sd_bus_error_move(sd_bus_error *dest, sd_bus_error *e);
 432 int sd_bus_error_is_set(const sd_bus_error *e);
 433 int sd_bus_error_has_name(const sd_bus_error *e, const char *name);
 434
 435 #define SD_BUS_ERROR_MAP(_name, _code)          \
 436         {                                       \
 437                 .name = _name,                  \
 438                 .code = _code,                  \
 439         }
 440 #define SD_BUS_ERROR_MAP_END                    \
 441         {                                       \
 442                 .name = NULL,                   \
 443                 .code = - 'x',                  \
 444         }
 445
 446 int sd_bus_error_add_map(const sd_bus_error_map *map);
 447
 448 /* Auxiliary macros */
 449
 450 #define SD_BUS_MESSAGE_APPEND_ID128(x) 16,                              \
 451                 (x).bytes[0],  (x).bytes[1],  (x).bytes[2],  (x).bytes[3], \
 452                 (x).bytes[4],  (x).bytes[5],  (x).bytes[6],  (x).bytes[7], \
 453                 (x).bytes[8],  (x).bytes[9],  (x).bytes[10], (x).bytes[11], \
 454                 (x).bytes[12], (x).bytes[13], (x).bytes[14], (x).bytes[15]
 455
 456 #define SD_BUS_MESSAGE_READ_ID128(x) 16,                                \
 457                 &(x).bytes[0],  &(x).bytes[1],  &(x).bytes[2],  &(x).bytes[3], \
 458                 &(x).bytes[4],  &(x).bytes[5],  &(x).bytes[6],  &(x).bytes[7], \
 459                 &(x).bytes[8],  &(x).bytes[9],  &(x).bytes[10], &(x).bytes[11], \
 460                 &(x).bytes[12], &(x).bytes[13], &(x).bytes[14], &(x).bytes[15]
 461
 462 /* Label escaping */
 463
 464 int sd_bus_path_encode(const char *prefix, const char *external_id, char **ret_path);
 465 int sd_bus_path_encode_many(char **out, const char *path_template, ...);
 466 int sd_bus_path_decode(const char *path, const char *prefix, char **ret_external_id);
 467 int sd_bus_path_decode_many(const char *path, const char *path_template, ...);
 468
 469 /* Tracking peers */
 470
 471 int sd_bus_track_new(sd_bus *bus, sd_bus_track **track, sd_bus_track_handler_t handler, void *userdata);
 472 sd_bus_track* sd_bus_track_ref(sd_bus_track *track);
 473 sd_bus_track* sd_bus_track_unref(sd_bus_track *track);
 474
 475 sd_bus* sd_bus_track_get_bus(sd_bus_track *track);
 476 void *sd_bus_track_get_userdata(sd_bus_track *track);
 477 void *sd_bus_track_set_userdata(sd_bus_track *track, void *userdata);
 478
 479 int sd_bus_track_add_sender(sd_bus_track *track, sd_bus_message *m);
 480 int sd_bus_track_remove_sender(sd_bus_track *track, sd_bus_message *m);
 481 int sd_bus_track_add_name(sd_bus_track *track, const char *name);
 482 int sd_bus_track_remove_name(sd_bus_track *track, const char *name);
 483
 484 int sd_bus_track_set_recursive(sd_bus_track *track, int b);
 485 int sd_bus_track_get_recursive(sd_bus_track *track);
 486
 487 unsigned sd_bus_track_count(sd_bus_track *track);
 488 int sd_bus_track_count_sender(sd_bus_track *track, sd_bus_message *m);
 489 int sd_bus_track_count_name(sd_bus_track *track, const char *name);
 490
 491 const char* sd_bus_track_contains(sd_bus_track *track, const char *name);
 492 const char* sd_bus_track_first(sd_bus_track *track);
 493 const char* sd_bus_track_next(sd_bus_track *track);
 494
 495 int sd_bus_track_set_destroy_callback(sd_bus_track *s, sd_bus_destroy_t callback);
 496 int sd_bus_track_get_destroy_callback(sd_bus_track *s, sd_bus_destroy_t *ret);
 497
 498 /* Define helpers so that __attribute__((cleanup(sd_bus_unrefp))) and similar may be used. */
 499 _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus, sd_bus_unref);
 500 _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus, sd_bus_close_unref);
 501 _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus, sd_bus_flush_close_unref);
 502 _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus_slot, sd_bus_slot_unref);
 503 _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus_message, sd_bus_message_unref);
 504 _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus_creds, sd_bus_creds_unref);
 505 _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_bus_track, sd_bus_track_unref);
 506
 507 _SD_END_DECLARATIONS;
 508
 509 #endif