Line data Source code
1 : /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2 :
3 : #pragma once
4 :
5 : /***
6 : This file is part of systemd.
7 :
8 : Copyright 2010 Lennart Poettering
9 :
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.
14 :
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.
19 :
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/>.
22 : ***/
23 :
24 : #include <stdbool.h>
25 : #include <stdlib.h>
26 : #include <unistd.h>
27 :
28 : typedef struct Unit Unit;
29 : typedef struct UnitVTable UnitVTable;
30 : typedef enum UnitActiveState UnitActiveState;
31 : typedef struct UnitRef UnitRef;
32 : typedef struct UnitStatusMessageFormats UnitStatusMessageFormats;
33 :
34 : #include "list.h"
35 : #include "condition.h"
36 : #include "install.h"
37 : #include "unit-name.h"
38 : #include "failure-action.h"
39 :
40 : enum UnitActiveState {
41 : UNIT_ACTIVE,
42 : UNIT_RELOADING,
43 : UNIT_INACTIVE,
44 : UNIT_FAILED,
45 : UNIT_ACTIVATING,
46 : UNIT_DEACTIVATING,
47 : _UNIT_ACTIVE_STATE_MAX,
48 : _UNIT_ACTIVE_STATE_INVALID = -1
49 : };
50 :
51 : typedef enum KillOperation {
52 : KILL_TERMINATE,
53 : KILL_KILL,
54 : KILL_ABORT,
55 : _KILL_OPERATION_MAX,
56 : _KILL_OPERATION_INVALID = -1
57 : } KillOperation;
58 :
59 2870 : static inline bool UNIT_IS_ACTIVE_OR_RELOADING(UnitActiveState t) {
60 2870 : return t == UNIT_ACTIVE || t == UNIT_RELOADING;
61 : }
62 :
63 1288 : static inline bool UNIT_IS_ACTIVE_OR_ACTIVATING(UnitActiveState t) {
64 1288 : return t == UNIT_ACTIVE || t == UNIT_ACTIVATING || t == UNIT_RELOADING;
65 : }
66 :
67 794 : static inline bool UNIT_IS_INACTIVE_OR_DEACTIVATING(UnitActiveState t) {
68 794 : return t == UNIT_INACTIVE || t == UNIT_FAILED || t == UNIT_DEACTIVATING;
69 : }
70 :
71 5679 : static inline bool UNIT_IS_INACTIVE_OR_FAILED(UnitActiveState t) {
72 5679 : return t == UNIT_INACTIVE || t == UNIT_FAILED;
73 : }
74 :
75 : #include "job.h"
76 :
77 : struct UnitRef {
78 : /* Keeps tracks of references to a unit. This is useful so
79 : * that we can merge two units if necessary and correct all
80 : * references to them */
81 :
82 : Unit* unit;
83 : LIST_FIELDS(UnitRef, refs);
84 : };
85 :
86 : struct Unit {
87 : Manager *manager;
88 :
89 : UnitType type;
90 : UnitLoadState load_state;
91 : Unit *merged_into;
92 :
93 : char *id; /* One name is special because we use it for identification. Points to an entry in the names set */
94 : char *instance;
95 :
96 : Set *names;
97 : Set *dependencies[_UNIT_DEPENDENCY_MAX];
98 :
99 : char **requires_mounts_for;
100 :
101 : char *description;
102 : char **documentation;
103 :
104 : char *fragment_path; /* if loaded from a config file this is the primary path to it */
105 : char *source_path; /* if converted, the source file */
106 : char **dropin_paths;
107 :
108 : usec_t fragment_mtime;
109 : usec_t source_mtime;
110 : usec_t dropin_mtime;
111 :
112 : /* If there is something to do with this unit, then this is the installed job for it */
113 : Job *job;
114 :
115 : /* JOB_NOP jobs are special and can be installed without disturbing the real job. */
116 : Job *nop_job;
117 :
118 : /* Job timeout and action to take */
119 : usec_t job_timeout;
120 : FailureAction job_timeout_action;
121 : char *job_timeout_reboot_arg;
122 :
123 : /* References to this */
124 : LIST_HEAD(UnitRef, refs);
125 :
126 : /* Conditions to check */
127 : LIST_HEAD(Condition, conditions);
128 : LIST_HEAD(Condition, asserts);
129 :
130 : dual_timestamp condition_timestamp;
131 : dual_timestamp assert_timestamp;
132 :
133 : dual_timestamp inactive_exit_timestamp;
134 : dual_timestamp active_enter_timestamp;
135 : dual_timestamp active_exit_timestamp;
136 : dual_timestamp inactive_enter_timestamp;
137 :
138 : UnitRef slice;
139 :
140 : /* Per type list */
141 : LIST_FIELDS(Unit, units_by_type);
142 :
143 : /* All units which have requires_mounts_for set */
144 : LIST_FIELDS(Unit, has_requires_mounts_for);
145 :
146 : /* Load queue */
147 : LIST_FIELDS(Unit, load_queue);
148 :
149 : /* D-Bus queue */
150 : LIST_FIELDS(Unit, dbus_queue);
151 :
152 : /* Cleanup queue */
153 : LIST_FIELDS(Unit, cleanup_queue);
154 :
155 : /* GC queue */
156 : LIST_FIELDS(Unit, gc_queue);
157 :
158 : /* CGroup realize members queue */
159 : LIST_FIELDS(Unit, cgroup_queue);
160 :
161 : /* PIDs we keep an eye on. Note that a unit might have many
162 : * more, but these are the ones we care enough about to
163 : * process SIGCHLD for */
164 : Set *pids;
165 :
166 : /* Used during GC sweeps */
167 : unsigned gc_marker;
168 :
169 : /* Error code when we didn't manage to load the unit (negative) */
170 : int load_error;
171 :
172 : /* Make sure we never enter endless loops with the check unneeded logic, or the BindsTo= logic */
173 : RateLimit auto_stop_ratelimit;
174 :
175 : /* Cached unit file state and preset */
176 : UnitFileState unit_file_state;
177 : int unit_file_preset;
178 :
179 : /* Where the cpuacct.usage cgroup counter was at the time the unit was started */
180 : nsec_t cpuacct_usage_base;
181 :
182 : /* Counterparts in the cgroup filesystem */
183 : char *cgroup_path;
184 : CGroupControllerMask cgroup_realized_mask;
185 : CGroupControllerMask cgroup_subtree_mask;
186 : CGroupControllerMask cgroup_members_mask;
187 :
188 : /* How to start OnFailure units */
189 : JobMode on_failure_job_mode;
190 :
191 : /* Garbage collect us we nobody wants or requires us anymore */
192 : bool stop_when_unneeded;
193 :
194 : /* Create default dependencies */
195 : bool default_dependencies;
196 :
197 : /* Refuse manual starting, allow starting only indirectly via dependency. */
198 : bool refuse_manual_start;
199 :
200 : /* Don't allow the user to stop this unit manually, allow stopping only indirectly via dependency. */
201 : bool refuse_manual_stop;
202 :
203 : /* Allow isolation requests */
204 : bool allow_isolate;
205 :
206 : /* Ignore this unit when isolating */
207 : bool ignore_on_isolate;
208 :
209 : /* Ignore this unit when snapshotting */
210 : bool ignore_on_snapshot;
211 :
212 : /* Did the last condition check succeed? */
213 : bool condition_result;
214 : bool assert_result;
215 :
216 : /* Is this a transient unit? */
217 : bool transient;
218 :
219 : bool in_load_queue:1;
220 : bool in_dbus_queue:1;
221 : bool in_cleanup_queue:1;
222 : bool in_gc_queue:1;
223 : bool in_cgroup_queue:1;
224 :
225 : bool sent_dbus_new_signal:1;
226 :
227 : bool no_gc:1;
228 :
229 : bool in_audit:1;
230 :
231 : bool cgroup_realized:1;
232 : bool cgroup_members_mask_valid:1;
233 : bool cgroup_subtree_mask_valid:1;
234 :
235 : /* Did we already invoke unit_coldplug() for this unit? */
236 : bool coldplugged:1;
237 : };
238 :
239 : struct UnitStatusMessageFormats {
240 : const char *starting_stopping[2];
241 : const char *finished_start_job[_JOB_RESULT_MAX];
242 : const char *finished_stop_job[_JOB_RESULT_MAX];
243 : };
244 :
245 : typedef enum UnitSetPropertiesMode {
246 : UNIT_CHECK = 0,
247 : UNIT_RUNTIME = 1,
248 : UNIT_PERSISTENT = 2,
249 : } UnitSetPropertiesMode;
250 :
251 : #include "socket.h"
252 : #include "busname.h"
253 : #include "target.h"
254 : #include "snapshot.h"
255 : #include "device.h"
256 : #include "automount.h"
257 : #include "swap.h"
258 : #include "timer.h"
259 : #include "slice.h"
260 : #include "path.h"
261 : #include "scope.h"
262 :
263 : struct UnitVTable {
264 : /* How much memory does an object of this unit type need */
265 : size_t object_size;
266 :
267 : /* If greater than 0, the offset into the object where
268 : * ExecContext is found, if the unit type has that */
269 : size_t exec_context_offset;
270 :
271 : /* If greater than 0, the offset into the object where
272 : * CGroupContext is found, if the unit type has that */
273 : size_t cgroup_context_offset;
274 :
275 : /* If greater than 0, the offset into the object where
276 : * KillContext is found, if the unit type has that */
277 : size_t kill_context_offset;
278 :
279 : /* If greater than 0, the offset into the object where the
280 : * pointer to ExecRuntime is found, if the unit type has
281 : * that */
282 : size_t exec_runtime_offset;
283 :
284 : /* The name of the configuration file section with the private settings of this unit */
285 : const char *private_section;
286 :
287 : /* Config file sections this unit type understands, separated
288 : * by NUL chars */
289 : const char *sections;
290 :
291 : /* This should reset all type-specific variables. This should
292 : * not allocate memory, and is called with zero-initialized
293 : * data. It should hence only initialize variables that need
294 : * to be set != 0. */
295 : void (*init)(Unit *u);
296 :
297 : /* This should free all type-specific variables. It should be
298 : * idempotent. */
299 : void (*done)(Unit *u);
300 :
301 : /* Actually load data from disk. This may fail, and should set
302 : * load_state to UNIT_LOADED, UNIT_MERGED or leave it at
303 : * UNIT_STUB if no configuration could be found. */
304 : int (*load)(Unit *u);
305 :
306 : /* If a lot of units got created via enumerate(), this is
307 : * where to actually set the state and call unit_notify(). */
308 : int (*coldplug)(Unit *u);
309 :
310 : void (*dump)(Unit *u, FILE *f, const char *prefix);
311 :
312 : int (*start)(Unit *u);
313 : int (*stop)(Unit *u);
314 : int (*reload)(Unit *u);
315 :
316 : int (*kill)(Unit *u, KillWho w, int signo, sd_bus_error *error);
317 :
318 : bool (*can_reload)(Unit *u);
319 :
320 : /* Write all data that cannot be restored from other sources
321 : * away using unit_serialize_item() */
322 : int (*serialize)(Unit *u, FILE *f, FDSet *fds);
323 :
324 : /* Restore one item from the serialization */
325 : int (*deserialize_item)(Unit *u, const char *key, const char *data, FDSet *fds);
326 :
327 : /* Try to match up fds with what we need for this unit */
328 : int (*distribute_fds)(Unit *u, FDSet *fds);
329 :
330 : /* Boils down the more complex internal state of this unit to
331 : * a simpler one that the engine can understand */
332 : UnitActiveState (*active_state)(Unit *u);
333 :
334 : /* Returns the substate specific to this unit type as
335 : * string. This is purely information so that we can give the
336 : * user a more fine grained explanation in which actual state a
337 : * unit is in. */
338 : const char* (*sub_state_to_string)(Unit *u);
339 :
340 : /* Return true when there is reason to keep this entry around
341 : * even nothing references it and it isn't active in any
342 : * way */
343 : bool (*check_gc)(Unit *u);
344 :
345 : /* When the unit is not running and no job for it queued we
346 : * shall release its runtime resources */
347 : void (*release_resources)(Unit *u);
348 :
349 : /* Return true when this unit is suitable for snapshotting */
350 : bool (*check_snapshot)(Unit *u);
351 :
352 : /* Invoked on every child that died */
353 : void (*sigchld_event)(Unit *u, pid_t pid, int code, int status);
354 :
355 : /* Reset failed state if we are in failed state */
356 : void (*reset_failed)(Unit *u);
357 :
358 : /* Called whenever any of the cgroups this unit watches for
359 : * ran empty */
360 : void (*notify_cgroup_empty)(Unit *u);
361 :
362 : /* Called whenever a process of this unit sends us a message */
363 : void (*notify_message)(Unit *u, pid_t pid, char **tags, FDSet *fds);
364 :
365 : /* Called whenever a name this Unit registered for comes or
366 : * goes away. */
367 : void (*bus_name_owner_change)(Unit *u, const char *name, const char *old_owner, const char *new_owner);
368 :
369 : /* Called for each property that is being set */
370 : int (*bus_set_property)(Unit *u, const char *name, sd_bus_message *message, UnitSetPropertiesMode mode, sd_bus_error *error);
371 :
372 : /* Called after at least one property got changed to apply the necessary change */
373 : int (*bus_commit_properties)(Unit *u);
374 :
375 : /* Return the unit this unit is following */
376 : Unit *(*following)(Unit *u);
377 :
378 : /* Return the set of units that are following each other */
379 : int (*following_set)(Unit *u, Set **s);
380 :
381 : /* Invoked each time a unit this unit is triggering changes
382 : * state or gains/loses a job */
383 : void (*trigger_notify)(Unit *u, Unit *trigger);
384 :
385 : /* Called whenever CLOCK_REALTIME made a jump */
386 : void (*time_change)(Unit *u);
387 :
388 : int (*get_timeout)(Unit *u, uint64_t *timeout);
389 :
390 : /* This is called for each unit type and should be used to
391 : * enumerate existing devices and load them. However,
392 : * everything that is loaded here should still stay in
393 : * inactive state. It is the job of the coldplug() call above
394 : * to put the units into the initial state. */
395 : int (*enumerate)(Manager *m);
396 :
397 : /* Type specific cleanups. */
398 : void (*shutdown)(Manager *m);
399 :
400 : /* If this function is set and return false all jobs for units
401 : * of this type will immediately fail. */
402 : bool (*supported)(void);
403 :
404 : /* The interface name */
405 : const char *bus_interface;
406 :
407 : /* The bus vtable */
408 : const sd_bus_vtable *bus_vtable;
409 :
410 : /* The strings to print in status messages */
411 : UnitStatusMessageFormats status_message_formats;
412 :
413 : /* Can units of this type have multiple names? */
414 : bool no_alias:1;
415 :
416 : /* Instances make no sense for this type */
417 : bool no_instances:1;
418 :
419 : /* Exclude from automatic gc */
420 : bool no_gc:1;
421 :
422 : /* True if transient units of this type are OK */
423 : bool can_transient:1;
424 : };
425 :
426 : extern const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX];
427 :
428 : #define UNIT_VTABLE(u) unit_vtable[(u)->type]
429 :
430 : /* For casting a unit into the various unit types */
431 : #define DEFINE_CAST(UPPERCASE, MixedCase) \
432 : static inline MixedCase* UPPERCASE(Unit *u) { \
433 : if (_unlikely_(!u || u->type != UNIT_##UPPERCASE)) \
434 : return NULL; \
435 : \
436 : return (MixedCase*) u; \
437 : }
438 :
439 : /* For casting the various unit types into a unit */
440 : #define UNIT(u) (&(u)->meta)
441 :
442 : #define UNIT_TRIGGER(u) ((Unit*) set_first((u)->dependencies[UNIT_TRIGGERS]))
443 :
444 738 : DEFINE_CAST(SERVICE, Service);
445 0 : DEFINE_CAST(SOCKET, Socket);
446 0 : DEFINE_CAST(BUSNAME, BusName);
447 681 : DEFINE_CAST(TARGET, Target);
448 0 : DEFINE_CAST(SNAPSHOT, Snapshot);
449 5050 : DEFINE_CAST(DEVICE, Device);
450 1508 : DEFINE_CAST(MOUNT, Mount);
451 0 : DEFINE_CAST(AUTOMOUNT, Automount);
452 0 : DEFINE_CAST(SWAP, Swap);
453 0 : DEFINE_CAST(TIMER, Timer);
454 95 : DEFINE_CAST(PATH, Path);
455 120 : DEFINE_CAST(SLICE, Slice);
456 0 : DEFINE_CAST(SCOPE, Scope);
457 :
458 : Unit *unit_new(Manager *m, size_t size);
459 : void unit_free(Unit *u);
460 :
461 : int unit_add_name(Unit *u, const char *name);
462 :
463 : int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference);
464 : int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference);
465 :
466 : int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *filename, bool add_reference);
467 : int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference);
468 :
469 : int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *filename, bool add_reference);
470 : int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference);
471 :
472 : int unit_add_exec_dependencies(Unit *u, ExecContext *c);
473 :
474 : int unit_choose_id(Unit *u, const char *name);
475 : int unit_set_description(Unit *u, const char *description);
476 :
477 : bool unit_check_gc(Unit *u);
478 :
479 : void unit_add_to_load_queue(Unit *u);
480 : void unit_add_to_dbus_queue(Unit *u);
481 : void unit_add_to_cleanup_queue(Unit *u);
482 : void unit_add_to_gc_queue(Unit *u);
483 :
484 : int unit_merge(Unit *u, Unit *other);
485 : int unit_merge_by_name(Unit *u, const char *other);
486 :
487 : Unit *unit_follow_merge(Unit *u) _pure_;
488 :
489 : int unit_load_fragment_and_dropin(Unit *u);
490 : int unit_load_fragment_and_dropin_optional(Unit *u);
491 : int unit_load(Unit *unit);
492 :
493 : int unit_add_default_slice(Unit *u, CGroupContext *c);
494 :
495 : const char *unit_description(Unit *u) _pure_;
496 :
497 : bool unit_has_name(Unit *u, const char *name);
498 :
499 : UnitActiveState unit_active_state(Unit *u);
500 :
501 : const char* unit_sub_state_to_string(Unit *u);
502 :
503 : void unit_dump(Unit *u, FILE *f, const char *prefix);
504 :
505 : bool unit_can_reload(Unit *u) _pure_;
506 : bool unit_can_start(Unit *u) _pure_;
507 : bool unit_can_isolate(Unit *u) _pure_;
508 :
509 : int unit_start(Unit *u);
510 : int unit_stop(Unit *u);
511 : int unit_reload(Unit *u);
512 :
513 : int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error);
514 : int unit_kill_common(Unit *u, KillWho who, int signo, pid_t main_pid, pid_t control_pid, sd_bus_error *error);
515 :
516 : void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success);
517 :
518 : int unit_watch_pid(Unit *u, pid_t pid);
519 : void unit_unwatch_pid(Unit *u, pid_t pid);
520 : int unit_watch_all_pids(Unit *u);
521 : void unit_unwatch_all_pids(Unit *u);
522 :
523 : void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2);
524 :
525 : int unit_watch_bus_name(Unit *u, const char *name);
526 : void unit_unwatch_bus_name(Unit *u, const char *name);
527 :
528 : bool unit_job_is_applicable(Unit *u, JobType j);
529 :
530 : int set_unit_path(const char *p);
531 :
532 : char *unit_dbus_path(Unit *u);
533 :
534 : int unit_load_related_unit(Unit *u, const char *type, Unit **_found);
535 :
536 : bool unit_can_serialize(Unit *u) _pure_;
537 : int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs);
538 : void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *value, ...) _printf_(4,5);
539 : void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value);
540 : int unit_deserialize(Unit *u, FILE *f, FDSet *fds);
541 :
542 : int unit_add_node_link(Unit *u, const char *what, bool wants);
543 :
544 : int unit_coldplug(Unit *u);
545 :
546 : void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) _printf_(3, 0);
547 : void unit_status_emit_starting_stopping_reloading(Unit *u, JobType t);
548 :
549 : bool unit_need_daemon_reload(Unit *u);
550 :
551 : void unit_reset_failed(Unit *u);
552 :
553 : Unit *unit_following(Unit *u);
554 : int unit_following_set(Unit *u, Set **s);
555 :
556 : const char *unit_slice_name(Unit *u);
557 :
558 : bool unit_stop_pending(Unit *u) _pure_;
559 : bool unit_inactive_or_pending(Unit *u) _pure_;
560 : bool unit_active_or_pending(Unit *u);
561 :
562 : int unit_add_default_target_dependency(Unit *u, Unit *target);
563 :
564 : char *unit_default_cgroup_path(Unit *u);
565 :
566 : void unit_start_on_failure(Unit *u);
567 : void unit_trigger_notify(Unit *u);
568 :
569 : UnitFileState unit_get_unit_file_state(Unit *u);
570 : int unit_get_unit_file_preset(Unit *u);
571 :
572 : Unit* unit_ref_set(UnitRef *ref, Unit *u);
573 : void unit_ref_unset(UnitRef *ref);
574 :
575 : #define UNIT_DEREF(ref) ((ref).unit)
576 : #define UNIT_ISSET(ref) (!!(ref).unit)
577 :
578 : int unit_patch_contexts(Unit *u);
579 :
580 : ExecContext *unit_get_exec_context(Unit *u) _pure_;
581 : KillContext *unit_get_kill_context(Unit *u) _pure_;
582 : CGroupContext *unit_get_cgroup_context(Unit *u) _pure_;
583 :
584 : ExecRuntime *unit_get_exec_runtime(Unit *u) _pure_;
585 :
586 : int unit_setup_exec_runtime(Unit *u);
587 :
588 : int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data);
589 : int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) _printf_(4,5);
590 :
591 : int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data);
592 : int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) _printf_(4,5);
593 :
594 : int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name);
595 :
596 : int unit_kill_context(Unit *u, KillContext *c, KillOperation k, pid_t main_pid, pid_t control_pid, bool main_pid_alien);
597 :
598 : int unit_make_transient(Unit *u);
599 :
600 : int unit_require_mounts_for(Unit *u, const char *path);
601 :
602 : bool unit_type_supported(UnitType t);
603 :
604 42 : static inline bool unit_supported(Unit *u) {
605 42 : return unit_type_supported(u->type);
606 : }
607 :
608 : void unit_warn_if_dir_nonempty(Unit *u, const char* where);
609 : int unit_fail_if_symlink(Unit *u, const char* where);
610 :
611 : const char *unit_active_state_to_string(UnitActiveState i) _const_;
612 : UnitActiveState unit_active_state_from_string(const char *s) _pure_;
613 :
614 : /* Macros which append UNIT= or USER_UNIT= to the message */
615 :
616 : #define log_unit_full(unit, level, error, ...) \
617 : ({ \
618 : Unit *_u = (unit); \
619 : _u ? log_object_internal(level, error, __FILE__, __LINE__, __func__, _u->manager->unit_log_field, _u->id, ##__VA_ARGS__) : \
620 : log_internal(level, error, __FILE__, __LINE__, __func__, ##__VA_ARGS__); \
621 : })
622 :
623 : #define log_unit_debug(unit, ...) log_unit_full(unit, LOG_DEBUG, 0, ##__VA_ARGS__)
624 : #define log_unit_info(unit, ...) log_unit_full(unit, LOG_INFO, 0, ##__VA_ARGS__)
625 : #define log_unit_notice(unit, ...) log_unit_full(unit, LOG_NOTICE, 0, ##__VA_ARGS__)
626 : #define log_unit_warning(unit, ...) log_unit_full(unit, LOG_WARNING, 0, ##__VA_ARGS__)
627 : #define log_unit_error(unit, ...) log_unit_full(unit, LOG_ERR, 0, ##__VA_ARGS__)
628 :
629 : #define log_unit_debug_errno(unit, error, ...) log_unit_full(unit, LOG_DEBUG, error, ##__VA_ARGS__)
630 : #define log_unit_info_errno(unit, error, ...) log_unit_full(unit, LOG_INFO, error, ##__VA_ARGS__)
631 : #define log_unit_notice_errno(unit, error, ...) log_unit_full(unit, LOG_NOTICE, error, ##__VA_ARGS__)
632 : #define log_unit_warning_errno(unit, error, ...) log_unit_full(unit, LOG_WARNING, error, ##__VA_ARGS__)
633 : #define log_unit_error_errno(unit, error, ...) log_unit_full(unit, LOG_ERR, error, ##__VA_ARGS__)
634 :
635 : #define LOG_UNIT_MESSAGE(unit, fmt, ...) "MESSAGE=%s: " fmt, (unit)->id, ##__VA_ARGS__
636 : #define LOG_UNIT_ID(unit) (unit)->manager->unit_log_format_string, (unit)->id
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