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 struct UnitRef UnitRef;
  31 typedef struct UnitStatusMessageFormats UnitStatusMessageFormats;
  32
  33 #include "list.h"
  34 #include "condition.h"
  35 #include "install.h"
  36 #include "unit-name.h"
  37 #include "failure-action.h"
  38
  39 typedef enum KillOperation {
  40         KILL_TERMINATE,
  41         KILL_KILL,
  42         KILL_ABORT,
  43         _KILL_OPERATION_MAX,
  44         _KILL_OPERATION_INVALID = -1
  45 } KillOperation;
  46
  47 static inline bool UNIT_IS_ACTIVE_OR_RELOADING(UnitActiveState t) {
  48         return t == UNIT_ACTIVE || t == UNIT_RELOADING;
  49 }
  50
  51 static inline bool UNIT_IS_ACTIVE_OR_ACTIVATING(UnitActiveState t) {
  52         return t == UNIT_ACTIVE || t == UNIT_ACTIVATING || t == UNIT_RELOADING;
  53 }
  54
  55 static inline bool UNIT_IS_INACTIVE_OR_DEACTIVATING(UnitActiveState t) {
  56         return t == UNIT_INACTIVE || t == UNIT_FAILED || t == UNIT_DEACTIVATING;
  57 }
  58
  59 static inline bool UNIT_IS_INACTIVE_OR_FAILED(UnitActiveState t) {
  60         return t == UNIT_INACTIVE || t == UNIT_FAILED;
  61 }
  62
  63 #include "job.h"
  64
  65 struct UnitRef {
  66         /* Keeps tracks of references to a unit. This is useful so
  67          * that we can merge two units if necessary and correct all
  68          * references to them */
  69
  70         Unit* unit;
  71         LIST_FIELDS(UnitRef, refs);
  72 };
  73
  74 struct Unit {
  75         Manager *manager;
  76
  77         UnitType type;
  78         UnitLoadState load_state;
  79         Unit *merged_into;
  80
  81         char *id; /* One name is special because we use it for identification. Points to an entry in the names set */
  82         char *instance;
  83
  84         Set *names;
  85         Set *dependencies[_UNIT_DEPENDENCY_MAX];
  86
  87         char **requires_mounts_for;
  88
  89         char *description;
  90         char **documentation;
  91
  92         char *fragment_path; /* if loaded from a config file this is the primary path to it */
  93         char *source_path; /* if converted, the source file */
  94         char **dropin_paths;
  95
  96         usec_t fragment_mtime;
  97         usec_t source_mtime;
  98         usec_t dropin_mtime;
  99
 100         /* If there is something to do with this unit, then this is the installed job for it */
 101         Job *job;
 102
 103         /* JOB_NOP jobs are special and can be installed without disturbing the real job. */
 104         Job *nop_job;
 105
 106         /* The slot used for watching NameOwnerChanged signals */
 107         sd_bus_slot *match_bus_slot;
 108
 109         /* Job timeout and action to take */
 110         usec_t job_timeout;
 111         FailureAction job_timeout_action;
 112         char *job_timeout_reboot_arg;
 113
 114         /* References to this */
 115         LIST_HEAD(UnitRef, refs);
 116
 117         /* Conditions to check */
 118         LIST_HEAD(Condition, conditions);
 119         LIST_HEAD(Condition, asserts);
 120
 121         dual_timestamp condition_timestamp;
 122         dual_timestamp assert_timestamp;
 123
 124         dual_timestamp inactive_exit_timestamp;
 125         dual_timestamp active_enter_timestamp;
 126         dual_timestamp active_exit_timestamp;
 127         dual_timestamp inactive_enter_timestamp;
 128
 129         UnitRef slice;
 130
 131         /* Per type list */
 132         LIST_FIELDS(Unit, units_by_type);
 133
 134         /* All units which have requires_mounts_for set */
 135         LIST_FIELDS(Unit, has_requires_mounts_for);
 136
 137         /* Load queue */
 138         LIST_FIELDS(Unit, load_queue);
 139
 140         /* D-Bus queue */
 141         LIST_FIELDS(Unit, dbus_queue);
 142
 143         /* Cleanup queue */
 144         LIST_FIELDS(Unit, cleanup_queue);
 145
 146         /* GC queue */
 147         LIST_FIELDS(Unit, gc_queue);
 148
 149         /* CGroup realize members queue */
 150         LIST_FIELDS(Unit, cgroup_queue);
 151
 152         /* Units with the same CGroup netclass */
 153         LIST_FIELDS(Unit, cgroup_netclass);
 154
 155         /* PIDs we keep an eye on. Note that a unit might have many
 156          * more, but these are the ones we care enough about to
 157          * process SIGCHLD for */
 158         Set *pids;
 159
 160         /* Used during GC sweeps */
 161         unsigned gc_marker;
 162
 163         /* Error code when we didn't manage to load the unit (negative) */
 164         int load_error;
 165
 166         /* Make sure we never enter endless loops with the check unneeded logic, or the BindsTo= logic */
 167         RateLimit auto_stop_ratelimit;
 168
 169         /* Cached unit file state and preset */
 170         UnitFileState unit_file_state;
 171         int unit_file_preset;
 172
 173         /* Where the cpuacct.usage cgroup counter was at the time the unit was started */
 174         nsec_t cpuacct_usage_base;
 175
 176         /* Counterparts in the cgroup filesystem */
 177         char *cgroup_path;
 178         CGroupMask cgroup_realized_mask;
 179         CGroupMask cgroup_subtree_mask;
 180         CGroupMask cgroup_members_mask;
 181         int cgroup_inotify_wd;
 182
 183         uint32_t cgroup_netclass_id;
 184
 185         /* How to start OnFailure units */
 186         JobMode on_failure_job_mode;
 187
 188         /* Garbage collect us we nobody wants or requires us anymore */
 189         bool stop_when_unneeded;
 190
 191         /* Create default dependencies */
 192         bool default_dependencies;
 193
 194         /* Refuse manual starting, allow starting only indirectly via dependency. */
 195         bool refuse_manual_start;
 196
 197         /* Don't allow the user to stop this unit manually, allow stopping only indirectly via dependency. */
 198         bool refuse_manual_stop;
 199
 200         /* Allow isolation requests */
 201         bool allow_isolate;
 202
 203         /* Ignore this unit when isolating */
 204         bool ignore_on_isolate;
 205
 206         /* Ignore this unit when snapshotting */
 207         bool ignore_on_snapshot;
 208
 209         /* Did the last condition check succeed? */
 210         bool condition_result;
 211         bool assert_result;
 212
 213         /* Is this a transient unit? */
 214         bool transient;
 215
 216         bool in_load_queue:1;
 217         bool in_dbus_queue:1;
 218         bool in_cleanup_queue:1;
 219         bool in_gc_queue:1;
 220         bool in_cgroup_queue:1;
 221
 222         bool sent_dbus_new_signal:1;
 223
 224         bool no_gc:1;
 225
 226         bool in_audit:1;
 227
 228         bool cgroup_realized:1;
 229         bool cgroup_members_mask_valid:1;
 230         bool cgroup_subtree_mask_valid:1;
 231
 232         /* Did we already invoke unit_coldplug() for this unit? */
 233         bool coldplugged:1;
 234 };
 235
 236 struct UnitStatusMessageFormats {
 237         const char *starting_stopping[2];
 238         const char *finished_start_job[_JOB_RESULT_MAX];
 239         const char *finished_stop_job[_JOB_RESULT_MAX];
 240 };
 241
 242 typedef enum UnitSetPropertiesMode {
 243         UNIT_CHECK = 0,
 244         UNIT_RUNTIME = 1,
 245         UNIT_PERSISTENT = 2,
 246 } UnitSetPropertiesMode;
 247
 248 #include "socket.h"
 249 #include "busname.h"
 250 #include "target.h"
 251 #include "snapshot.h"
 252 #include "device.h"
 253 #include "automount.h"
 254 #include "swap.h"
 255 #include "timer.h"
 256 #include "slice.h"
 257 #include "path.h"
 258 #include "scope.h"
 259
 260 struct UnitVTable {
 261         /* How much memory does an object of this unit type need */
 262         size_t object_size;
 263
 264         /* If greater than 0, the offset into the object where
 265          * ExecContext is found, if the unit type has that */
 266         size_t exec_context_offset;
 267
 268         /* If greater than 0, the offset into the object where
 269          * CGroupContext is found, if the unit type has that */
 270         size_t cgroup_context_offset;
 271
 272         /* If greater than 0, the offset into the object where
 273          * KillContext is found, if the unit type has that */
 274         size_t kill_context_offset;
 275
 276         /* If greater than 0, the offset into the object where the
 277          * pointer to ExecRuntime is found, if the unit type has
 278          * that */
 279         size_t exec_runtime_offset;
 280
 281         /* The name of the configuration file section with the private settings of this unit */
 282         const char *private_section;
 283
 284         /* Config file sections this unit type understands, separated
 285          * by NUL chars */
 286         const char *sections;
 287
 288         /* This should reset all type-specific variables. This should
 289          * not allocate memory, and is called with zero-initialized
 290          * data. It should hence only initialize variables that need
 291          * to be set != 0. */
 292         void (*init)(Unit *u);
 293
 294         /* This should free all type-specific variables. It should be
 295          * idempotent. */
 296         void (*done)(Unit *u);
 297
 298         /* Actually load data from disk. This may fail, and should set
 299          * load_state to UNIT_LOADED, UNIT_MERGED or leave it at
 300          * UNIT_STUB if no configuration could be found. */
 301         int (*load)(Unit *u);
 302
 303         /* If a lot of units got created via enumerate(), this is
 304          * where to actually set the state and call unit_notify(). */
 305         int (*coldplug)(Unit *u);
 306
 307         void (*dump)(Unit *u, FILE *f, const char *prefix);
 308
 309         int (*start)(Unit *u);
 310         int (*stop)(Unit *u);
 311         int (*reload)(Unit *u);
 312
 313         int (*kill)(Unit *u, KillWho w, int signo, sd_bus_error *error);
 314
 315         bool (*can_reload)(Unit *u);
 316
 317         /* Write all data that cannot be restored from other sources
 318          * away using unit_serialize_item() */
 319         int (*serialize)(Unit *u, FILE *f, FDSet *fds);
 320
 321         /* Restore one item from the serialization */
 322         int (*deserialize_item)(Unit *u, const char *key, const char *data, FDSet *fds);
 323
 324         /* Try to match up fds with what we need for this unit */
 325         int (*distribute_fds)(Unit *u, FDSet *fds);
 326
 327         /* Boils down the more complex internal state of this unit to
 328          * a simpler one that the engine can understand */
 329         UnitActiveState (*active_state)(Unit *u);
 330
 331         /* Returns the substate specific to this unit type as
 332          * string. This is purely information so that we can give the
 333          * user a more fine grained explanation in which actual state a
 334          * unit is in. */
 335         const char* (*sub_state_to_string)(Unit *u);
 336
 337         /* Return true when there is reason to keep this entry around
 338          * even nothing references it and it isn't active in any
 339          * way */
 340         bool (*check_gc)(Unit *u);
 341
 342         /* When the unit is not running and no job for it queued we
 343          * shall release its runtime resources */
 344         void (*release_resources)(Unit *u);
 345
 346         /* Return true when this unit is suitable for snapshotting */
 347         bool (*check_snapshot)(Unit *u);
 348
 349         /* Invoked on every child that died */
 350         void (*sigchld_event)(Unit *u, pid_t pid, int code, int status);
 351
 352         /* Reset failed state if we are in failed state */
 353         void (*reset_failed)(Unit *u);
 354
 355         /* Called whenever any of the cgroups this unit watches for
 356          * ran empty */
 357         void (*notify_cgroup_empty)(Unit *u);
 358
 359         /* Called whenever a process of this unit sends us a message */
 360         void (*notify_message)(Unit *u, pid_t pid, char **tags, FDSet *fds);
 361
 362         /* Called whenever a name this Unit registered for comes or
 363          * goes away. */
 364         void (*bus_name_owner_change)(Unit *u, const char *name, const char *old_owner, const char *new_owner);
 365
 366         /* Called for each property that is being set */
 367         int (*bus_set_property)(Unit *u, const char *name, sd_bus_message *message, UnitSetPropertiesMode mode, sd_bus_error *error);
 368
 369         /* Called after at least one property got changed to apply the necessary change */
 370         int (*bus_commit_properties)(Unit *u);
 371
 372         /* Return the unit this unit is following */
 373         Unit *(*following)(Unit *u);
 374
 375         /* Return the set of units that are following each other */
 376         int (*following_set)(Unit *u, Set **s);
 377
 378         /* Invoked each time a unit this unit is triggering changes
 379          * state or gains/loses a job */
 380         void (*trigger_notify)(Unit *u, Unit *trigger);
 381
 382         /* Called whenever CLOCK_REALTIME made a jump */
 383         void (*time_change)(Unit *u);
 384
 385         int (*get_timeout)(Unit *u, uint64_t *timeout);
 386
 387         /* This is called for each unit type and should be used to
 388          * enumerate existing devices and load them. However,
 389          * everything that is loaded here should still stay in
 390          * inactive state. It is the job of the coldplug() call above
 391          * to put the units into the initial state.  */
 392         int (*enumerate)(Manager *m);
 393
 394         /* Type specific cleanups. */
 395         void (*shutdown)(Manager *m);
 396
 397         /* If this function is set and return false all jobs for units
 398          * of this type will immediately fail. */
 399         bool (*supported)(void);
 400
 401         /* The bus vtable */
 402         const sd_bus_vtable *bus_vtable;
 403
 404         /* The strings to print in status messages */
 405         UnitStatusMessageFormats status_message_formats;
 406
 407         /* Can units of this type have multiple names? */
 408         bool no_alias:1;
 409
 410         /* Instances make no sense for this type */
 411         bool no_instances:1;
 412
 413         /* Exclude from automatic gc */
 414         bool no_gc:1;
 415
 416         /* True if transient units of this type are OK */
 417         bool can_transient:1;
 418 };
 419
 420 extern const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX];
 421
 422 #define UNIT_VTABLE(u) unit_vtable[(u)->type]
 423
 424 /* For casting a unit into the various unit types */
 425 #define DEFINE_CAST(UPPERCASE, MixedCase)                               \
 426         static inline MixedCase* UPPERCASE(Unit *u) {                   \
 427                 if (_unlikely_(!u || u->type != UNIT_##UPPERCASE))      \
 428                         return NULL;                                    \
 429                                                                         \
 430                 return (MixedCase*) u;                                  \
 431         }
 432
 433 /* For casting the various unit types into a unit */
 434 #define UNIT(u) (&(u)->meta)
 435
 436 #define UNIT_HAS_EXEC_CONTEXT(u) (UNIT_VTABLE(u)->exec_context_offset > 0)
 437 #define UNIT_HAS_CGROUP_CONTEXT(u) (UNIT_VTABLE(u)->cgroup_context_offset > 0)
 438 #define UNIT_HAS_KILL_CONTEXT(u) (UNIT_VTABLE(u)->kill_context_offset > 0)
 439
 440 #define UNIT_TRIGGER(u) ((Unit*) set_first((u)->dependencies[UNIT_TRIGGERS]))
 441
 442 DEFINE_CAST(SERVICE, Service);
 443 DEFINE_CAST(SOCKET, Socket);
 444 DEFINE_CAST(BUSNAME, BusName);
 445 DEFINE_CAST(TARGET, Target);
 446 DEFINE_CAST(SNAPSHOT, Snapshot);
 447 DEFINE_CAST(DEVICE, Device);
 448 DEFINE_CAST(MOUNT, Mount);
 449 DEFINE_CAST(AUTOMOUNT, Automount);
 450 DEFINE_CAST(SWAP, Swap);
 451 DEFINE_CAST(TIMER, Timer);
 452 DEFINE_CAST(PATH, Path);
 453 DEFINE_CAST(SLICE, Slice);
 454 DEFINE_CAST(SCOPE, Scope);
 455
 456 Unit *unit_new(Manager *m, size_t size);
 457 void unit_free(Unit *u);
 458
 459 int unit_add_name(Unit *u, const char *name);
 460
 461 int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference);
 462 int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference);
 463
 464 int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *filename, bool add_reference);
 465 int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference);
 466
 467 int unit_add_exec_dependencies(Unit *u, ExecContext *c);
 468
 469 int unit_choose_id(Unit *u, const char *name);
 470 int unit_set_description(Unit *u, const char *description);
 471
 472 bool unit_check_gc(Unit *u);
 473
 474 void unit_add_to_load_queue(Unit *u);
 475 void unit_add_to_dbus_queue(Unit *u);
 476 void unit_add_to_cleanup_queue(Unit *u);
 477 void unit_add_to_gc_queue(Unit *u);
 478
 479 int unit_merge(Unit *u, Unit *other);
 480 int unit_merge_by_name(Unit *u, const char *other);
 481
 482 Unit *unit_follow_merge(Unit *u) _pure_;
 483
 484 int unit_load_fragment_and_dropin(Unit *u);
 485 int unit_load_fragment_and_dropin_optional(Unit *u);
 486 int unit_load(Unit *unit);
 487
 488 int unit_set_slice(Unit *u, Unit *slice);
 489 int unit_set_default_slice(Unit *u);
 490
 491 const char *unit_description(Unit *u) _pure_;
 492
 493 bool unit_has_name(Unit *u, const char *name);
 494
 495 UnitActiveState unit_active_state(Unit *u);
 496
 497 const char* unit_sub_state_to_string(Unit *u);
 498
 499 void unit_dump(Unit *u, FILE *f, const char *prefix);
 500
 501 bool unit_can_reload(Unit *u) _pure_;
 502 bool unit_can_start(Unit *u) _pure_;
 503 bool unit_can_isolate(Unit *u) _pure_;
 504
 505 int unit_start(Unit *u);
 506 int unit_stop(Unit *u);
 507 int unit_reload(Unit *u);
 508
 509 int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error);
 510 int unit_kill_common(Unit *u, KillWho who, int signo, pid_t main_pid, pid_t control_pid, sd_bus_error *error);
 511
 512 void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success);
 513
 514 int unit_watch_pid(Unit *u, pid_t pid);
 515 void unit_unwatch_pid(Unit *u, pid_t pid);
 516 void unit_unwatch_all_pids(Unit *u);
 517
 518 void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2);
 519
 520 int unit_install_bus_match(Unit *u, sd_bus *bus, const char *name);
 521 int unit_watch_bus_name(Unit *u, const char *name);
 522 void unit_unwatch_bus_name(Unit *u, const char *name);
 523
 524 bool unit_job_is_applicable(Unit *u, JobType j);
 525
 526 int set_unit_path(const char *p);
 527
 528 char *unit_dbus_path(Unit *u);
 529
 530 int unit_load_related_unit(Unit *u, const char *type, Unit **_found);
 531
 532 bool unit_can_serialize(Unit *u) _pure_;
 533
 534 int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs);
 535 int unit_deserialize(Unit *u, FILE *f, FDSet *fds);
 536
 537 int unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value);
 538 int unit_serialize_item_escaped(Unit *u, FILE *f, const char *key, const char *value);
 539 int unit_serialize_item_fd(Unit *u, FILE *f, FDSet *fds, const char *key, int fd);
 540 void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *value, ...) _printf_(4,5);
 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 void unit_start_on_failure(Unit *u);
 565 void unit_trigger_notify(Unit *u);
 566
 567 UnitFileState unit_get_unit_file_state(Unit *u);
 568 int unit_get_unit_file_preset(Unit *u);
 569
 570 Unit* unit_ref_set(UnitRef *ref, Unit *u);
 571 void unit_ref_unset(UnitRef *ref);
 572
 573 #define UNIT_DEREF(ref) ((ref).unit)
 574 #define UNIT_ISSET(ref) (!!(ref).unit)
 575
 576 int unit_patch_contexts(Unit *u);
 577
 578 ExecContext *unit_get_exec_context(Unit *u) _pure_;
 579 KillContext *unit_get_kill_context(Unit *u) _pure_;
 580 CGroupContext *unit_get_cgroup_context(Unit *u) _pure_;
 581
 582 ExecRuntime *unit_get_exec_runtime(Unit *u) _pure_;
 583
 584 int unit_setup_exec_runtime(Unit *u);
 585
 586 int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data);
 587 int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) _printf_(4,5);
 588
 589 int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data);
 590 int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) _printf_(4,5);
 591
 592 int unit_kill_context(Unit *u, KillContext *c, KillOperation k, pid_t main_pid, pid_t control_pid, bool main_pid_alien);
 593
 594 int unit_make_transient(Unit *u);
 595
 596 int unit_require_mounts_for(Unit *u, const char *path);
 597
 598 bool unit_type_supported(UnitType t);
 599
 600 static inline bool unit_supported(Unit *u) {
 601         return unit_type_supported(u->type);
 602 }
 603
 604 void unit_warn_if_dir_nonempty(Unit *u, const char* where);
 605 int unit_fail_if_symlink(Unit *u, const char* where);
 606
 607 /* Macros which append UNIT= or USER_UNIT= to the message */
 608
 609 #define log_unit_full(unit, level, error, ...)                          \
 610         ({                                                              \
 611                 Unit *_u = (unit);                                      \
 612                 _u ? log_object_internal(level, error, __FILE__, __LINE__, __func__, _u->manager->unit_log_field, _u->id, ##__VA_ARGS__) : \
 613                         log_internal(level, error, __FILE__, __LINE__, __func__, ##__VA_ARGS__); \
 614         })
 615
 616 #define log_unit_debug(unit, ...)   log_unit_full(unit, LOG_DEBUG, 0, ##__VA_ARGS__)
 617 #define log_unit_info(unit, ...)    log_unit_full(unit, LOG_INFO, 0, ##__VA_ARGS__)
 618 #define log_unit_notice(unit, ...)  log_unit_full(unit, LOG_NOTICE, 0, ##__VA_ARGS__)
 619 #define log_unit_warning(unit, ...) log_unit_full(unit, LOG_WARNING, 0, ##__VA_ARGS__)
 620 #define log_unit_error(unit, ...)   log_unit_full(unit, LOG_ERR, 0, ##__VA_ARGS__)
 621
 622 #define log_unit_debug_errno(unit, error, ...)   log_unit_full(unit, LOG_DEBUG, error, ##__VA_ARGS__)
 623 #define log_unit_info_errno(unit, error, ...)    log_unit_full(unit, LOG_INFO, error, ##__VA_ARGS__)
 624 #define log_unit_notice_errno(unit, error, ...)  log_unit_full(unit, LOG_NOTICE, error, ##__VA_ARGS__)
 625 #define log_unit_warning_errno(unit, error, ...) log_unit_full(unit, LOG_WARNING, error, ##__VA_ARGS__)
 626 #define log_unit_error_errno(unit, error, ...)   log_unit_full(unit, LOG_ERR, error, ##__VA_ARGS__)
 627
 628 #define LOG_UNIT_MESSAGE(unit, fmt, ...) "MESSAGE=%s: " fmt, (unit)->id, ##__VA_ARGS__
 629 #define LOG_UNIT_ID(unit) (unit)->manager->unit_log_format_string, (unit)->id