src/core/unit.h

   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 static inline bool UNIT_IS_ACTIVE_OR_RELOADING(UnitActiveState t) {
  60         return t == UNIT_ACTIVE || t == UNIT_RELOADING;
  61 }
  62
  63 static inline bool UNIT_IS_ACTIVE_OR_ACTIVATING(UnitActiveState t) {
  64         return t == UNIT_ACTIVE || t == UNIT_ACTIVATING || t == UNIT_RELOADING;
  65 }
  66
  67 static inline bool UNIT_IS_INACTIVE_OR_DEACTIVATING(UnitActiveState t) {
  68         return t == UNIT_INACTIVE || t == UNIT_FAILED || t == UNIT_DEACTIVATING;
  69 }
  70
  71 static inline bool UNIT_IS_INACTIVE_OR_FAILED(UnitActiveState t) {
  72         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 DEFINE_CAST(SERVICE, Service);
 445 DEFINE_CAST(SOCKET, Socket);
 446 DEFINE_CAST(BUSNAME, BusName);
 447 DEFINE_CAST(TARGET, Target);
 448 DEFINE_CAST(SNAPSHOT, Snapshot);
 449 DEFINE_CAST(DEVICE, Device);
 450 DEFINE_CAST(MOUNT, Mount);
 451 DEFINE_CAST(AUTOMOUNT, Automount);
 452 DEFINE_CAST(SWAP, Swap);
 453 DEFINE_CAST(TIMER, Timer);
 454 DEFINE_CAST(PATH, Path);
 455 DEFINE_CAST(SLICE, Slice);
 456 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 static inline bool unit_supported(Unit *u) {
 605         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