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         /* Did the last condition check succeed? */
 207         bool condition_result;
 208         bool assert_result;
 209
 210         /* Is this a transient unit? */
 211         bool transient;
 212
 213         bool in_load_queue:1;
 214         bool in_dbus_queue:1;
 215         bool in_cleanup_queue:1;
 216         bool in_gc_queue:1;
 217         bool in_cgroup_queue:1;
 218
 219         bool sent_dbus_new_signal:1;
 220
 221         bool no_gc:1;
 222
 223         bool in_audit:1;
 224
 225         bool cgroup_realized:1;
 226         bool cgroup_members_mask_valid:1;
 227         bool cgroup_subtree_mask_valid:1;
 228
 229         /* Did we already invoke unit_coldplug() for this unit? */
 230         bool coldplugged:1;
 231 };
 232
 233 struct UnitStatusMessageFormats {
 234         const char *starting_stopping[2];
 235         const char *finished_start_job[_JOB_RESULT_MAX];
 236         const char *finished_stop_job[_JOB_RESULT_MAX];
 237 };
 238
 239 typedef enum UnitSetPropertiesMode {
 240         UNIT_CHECK = 0,
 241         UNIT_RUNTIME = 1,
 242         UNIT_PERSISTENT = 2,
 243 } UnitSetPropertiesMode;
 244
 245 #include "socket.h"
 246 #include "busname.h"
 247 #include "target.h"
 248 #include "device.h"
 249 #include "automount.h"
 250 #include "swap.h"
 251 #include "timer.h"
 252 #include "slice.h"
 253 #include "path.h"
 254 #include "scope.h"
 255
 256 struct UnitVTable {
 257         /* How much memory does an object of this unit type need */
 258         size_t object_size;
 259
 260         /* If greater than 0, the offset into the object where
 261          * ExecContext is found, if the unit type has that */
 262         size_t exec_context_offset;
 263
 264         /* If greater than 0, the offset into the object where
 265          * CGroupContext is found, if the unit type has that */
 266         size_t cgroup_context_offset;
 267
 268         /* If greater than 0, the offset into the object where
 269          * KillContext is found, if the unit type has that */
 270         size_t kill_context_offset;
 271
 272         /* If greater than 0, the offset into the object where the
 273          * pointer to ExecRuntime is found, if the unit type has
 274          * that */
 275         size_t exec_runtime_offset;
 276
 277         /* The name of the configuration file section with the private settings of this unit */
 278         const char *private_section;
 279
 280         /* Config file sections this unit type understands, separated
 281          * by NUL chars */
 282         const char *sections;
 283
 284         /* This should reset all type-specific variables. This should
 285          * not allocate memory, and is called with zero-initialized
 286          * data. It should hence only initialize variables that need
 287          * to be set != 0. */
 288         void (*init)(Unit *u);
 289
 290         /* This should free all type-specific variables. It should be
 291          * idempotent. */
 292         void (*done)(Unit *u);
 293
 294         /* Actually load data from disk. This may fail, and should set
 295          * load_state to UNIT_LOADED, UNIT_MERGED or leave it at
 296          * UNIT_STUB if no configuration could be found. */
 297         int (*load)(Unit *u);
 298
 299         /* If a lot of units got created via enumerate(), this is
 300          * where to actually set the state and call unit_notify(). */
 301         int (*coldplug)(Unit *u);
 302
 303         void (*dump)(Unit *u, FILE *f, const char *prefix);
 304
 305         int (*start)(Unit *u);
 306         int (*stop)(Unit *u);
 307         int (*reload)(Unit *u);
 308
 309         int (*kill)(Unit *u, KillWho w, int signo, sd_bus_error *error);
 310
 311         bool (*can_reload)(Unit *u);
 312
 313         /* Write all data that cannot be restored from other sources
 314          * away using unit_serialize_item() */
 315         int (*serialize)(Unit *u, FILE *f, FDSet *fds);
 316
 317         /* Restore one item from the serialization */
 318         int (*deserialize_item)(Unit *u, const char *key, const char *data, FDSet *fds);
 319
 320         /* Try to match up fds with what we need for this unit */
 321         int (*distribute_fds)(Unit *u, FDSet *fds);
 322
 323         /* Boils down the more complex internal state of this unit to
 324          * a simpler one that the engine can understand */
 325         UnitActiveState (*active_state)(Unit *u);
 326
 327         /* Returns the substate specific to this unit type as
 328          * string. This is purely information so that we can give the
 329          * user a more fine grained explanation in which actual state a
 330          * unit is in. */
 331         const char* (*sub_state_to_string)(Unit *u);
 332
 333         /* Return true when there is reason to keep this entry around
 334          * even nothing references it and it isn't active in any
 335          * way */
 336         bool (*check_gc)(Unit *u);
 337
 338         /* When the unit is not running and no job for it queued we
 339          * shall release its runtime resources */
 340         void (*release_resources)(Unit *u);
 341
 342         /* Invoked on every child that died */
 343         void (*sigchld_event)(Unit *u, pid_t pid, int code, int status);
 344
 345         /* Reset failed state if we are in failed state */
 346         void (*reset_failed)(Unit *u);
 347
 348         /* Called whenever any of the cgroups this unit watches for
 349          * ran empty */
 350         void (*notify_cgroup_empty)(Unit *u);
 351
 352         /* Called whenever a process of this unit sends us a message */
 353         void (*notify_message)(Unit *u, pid_t pid, char **tags, FDSet *fds);
 354
 355         /* Called whenever a name this Unit registered for comes or
 356          * goes away. */
 357         void (*bus_name_owner_change)(Unit *u, const char *name, const char *old_owner, const char *new_owner);
 358
 359         /* Called for each property that is being set */
 360         int (*bus_set_property)(Unit *u, const char *name, sd_bus_message *message, UnitSetPropertiesMode mode, sd_bus_error *error);
 361
 362         /* Called after at least one property got changed to apply the necessary change */
 363         int (*bus_commit_properties)(Unit *u);
 364
 365         /* Return the unit this unit is following */
 366         Unit *(*following)(Unit *u);
 367
 368         /* Return the set of units that are following each other */
 369         int (*following_set)(Unit *u, Set **s);
 370
 371         /* Invoked each time a unit this unit is triggering changes
 372          * state or gains/loses a job */
 373         void (*trigger_notify)(Unit *u, Unit *trigger);
 374
 375         /* Called whenever CLOCK_REALTIME made a jump */
 376         void (*time_change)(Unit *u);
 377
 378         int (*get_timeout)(Unit *u, uint64_t *timeout);
 379
 380         /* This is called for each unit type and should be used to
 381          * enumerate existing devices and load them. However,
 382          * everything that is loaded here should still stay in
 383          * inactive state. It is the job of the coldplug() call above
 384          * to put the units into the initial state.  */
 385         int (*enumerate)(Manager *m);
 386
 387         /* Type specific cleanups. */
 388         void (*shutdown)(Manager *m);
 389
 390         /* If this function is set and return false all jobs for units
 391          * of this type will immediately fail. */
 392         bool (*supported)(void);
 393
 394         /* The bus vtable */
 395         const sd_bus_vtable *bus_vtable;
 396
 397         /* The strings to print in status messages */
 398         UnitStatusMessageFormats status_message_formats;
 399
 400         /* Can units of this type have multiple names? */
 401         bool no_alias:1;
 402
 403         /* Instances make no sense for this type */
 404         bool no_instances:1;
 405
 406         /* Exclude from automatic gc */
 407         bool no_gc:1;
 408
 409         /* True if transient units of this type are OK */
 410         bool can_transient:1;
 411 };
 412
 413 extern const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX];
 414
 415 #define UNIT_VTABLE(u) unit_vtable[(u)->type]
 416
 417 /* For casting a unit into the various unit types */
 418 #define DEFINE_CAST(UPPERCASE, MixedCase)                               \
 419         static inline MixedCase* UPPERCASE(Unit *u) {                   \
 420                 if (_unlikely_(!u || u->type != UNIT_##UPPERCASE))      \
 421                         return NULL;                                    \
 422                                                                         \
 423                 return (MixedCase*) u;                                  \
 424         }
 425
 426 /* For casting the various unit types into a unit */
 427 #define UNIT(u) (&(u)->meta)
 428
 429 #define UNIT_HAS_EXEC_CONTEXT(u) (UNIT_VTABLE(u)->exec_context_offset > 0)
 430 #define UNIT_HAS_CGROUP_CONTEXT(u) (UNIT_VTABLE(u)->cgroup_context_offset > 0)
 431 #define UNIT_HAS_KILL_CONTEXT(u) (UNIT_VTABLE(u)->kill_context_offset > 0)
 432
 433 #define UNIT_TRIGGER(u) ((Unit*) set_first((u)->dependencies[UNIT_TRIGGERS]))
 434
 435 DEFINE_CAST(SERVICE, Service);
 436 DEFINE_CAST(SOCKET, Socket);
 437 DEFINE_CAST(BUSNAME, BusName);
 438 DEFINE_CAST(TARGET, Target);
 439 DEFINE_CAST(DEVICE, Device);
 440 DEFINE_CAST(MOUNT, Mount);
 441 DEFINE_CAST(AUTOMOUNT, Automount);
 442 DEFINE_CAST(SWAP, Swap);
 443 DEFINE_CAST(TIMER, Timer);
 444 DEFINE_CAST(PATH, Path);
 445 DEFINE_CAST(SLICE, Slice);
 446 DEFINE_CAST(SCOPE, Scope);
 447
 448 Unit *unit_new(Manager *m, size_t size);
 449 void unit_free(Unit *u);
 450
 451 int unit_add_name(Unit *u, const char *name);
 452
 453 int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference);
 454 int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference);
 455
 456 int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *filename, bool add_reference);
 457 int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference);
 458
 459 int unit_add_exec_dependencies(Unit *u, ExecContext *c);
 460
 461 int unit_choose_id(Unit *u, const char *name);
 462 int unit_set_description(Unit *u, const char *description);
 463
 464 bool unit_check_gc(Unit *u);
 465
 466 void unit_add_to_load_queue(Unit *u);
 467 void unit_add_to_dbus_queue(Unit *u);
 468 void unit_add_to_cleanup_queue(Unit *u);
 469 void unit_add_to_gc_queue(Unit *u);
 470
 471 int unit_merge(Unit *u, Unit *other);
 472 int unit_merge_by_name(Unit *u, const char *other);
 473
 474 Unit *unit_follow_merge(Unit *u) _pure_;
 475
 476 int unit_load_fragment_and_dropin(Unit *u);
 477 int unit_load_fragment_and_dropin_optional(Unit *u);
 478 int unit_load(Unit *unit);
 479
 480 int unit_set_slice(Unit *u, Unit *slice);
 481 int unit_set_default_slice(Unit *u);
 482
 483 const char *unit_description(Unit *u) _pure_;
 484
 485 bool unit_has_name(Unit *u, const char *name);
 486
 487 UnitActiveState unit_active_state(Unit *u);
 488
 489 const char* unit_sub_state_to_string(Unit *u);
 490
 491 void unit_dump(Unit *u, FILE *f, const char *prefix);
 492
 493 bool unit_can_reload(Unit *u) _pure_;
 494 bool unit_can_start(Unit *u) _pure_;
 495 bool unit_can_isolate(Unit *u) _pure_;
 496
 497 int unit_start(Unit *u);
 498 int unit_stop(Unit *u);
 499 int unit_reload(Unit *u);
 500
 501 int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error);
 502 int unit_kill_common(Unit *u, KillWho who, int signo, pid_t main_pid, pid_t control_pid, sd_bus_error *error);
 503
 504 void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success);
 505
 506 int unit_watch_pid(Unit *u, pid_t pid);
 507 void unit_unwatch_pid(Unit *u, pid_t pid);
 508 void unit_unwatch_all_pids(Unit *u);
 509
 510 void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2);
 511
 512 int unit_install_bus_match(Unit *u, sd_bus *bus, const char *name);
 513 int unit_watch_bus_name(Unit *u, const char *name);
 514 void unit_unwatch_bus_name(Unit *u, const char *name);
 515
 516 bool unit_job_is_applicable(Unit *u, JobType j);
 517
 518 int set_unit_path(const char *p);
 519
 520 char *unit_dbus_path(Unit *u);
 521
 522 int unit_load_related_unit(Unit *u, const char *type, Unit **_found);
 523
 524 bool unit_can_serialize(Unit *u) _pure_;
 525
 526 int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs);
 527 int unit_deserialize(Unit *u, FILE *f, FDSet *fds);
 528
 529 int unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value);
 530 int unit_serialize_item_escaped(Unit *u, FILE *f, const char *key, const char *value);
 531 int unit_serialize_item_fd(Unit *u, FILE *f, FDSet *fds, const char *key, int fd);
 532 void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *value, ...) _printf_(4,5);
 533
 534 int unit_add_node_link(Unit *u, const char *what, bool wants);
 535
 536 int unit_coldplug(Unit *u);
 537
 538 void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) _printf_(3, 0);
 539 void unit_status_emit_starting_stopping_reloading(Unit *u, JobType t);
 540
 541 bool unit_need_daemon_reload(Unit *u);
 542
 543 void unit_reset_failed(Unit *u);
 544
 545 Unit *unit_following(Unit *u);
 546 int unit_following_set(Unit *u, Set **s);
 547
 548 const char *unit_slice_name(Unit *u);
 549
 550 bool unit_stop_pending(Unit *u) _pure_;
 551 bool unit_inactive_or_pending(Unit *u) _pure_;
 552 bool unit_active_or_pending(Unit *u);
 553
 554 int unit_add_default_target_dependency(Unit *u, Unit *target);
 555
 556 void unit_start_on_failure(Unit *u);
 557 void unit_trigger_notify(Unit *u);
 558
 559 UnitFileState unit_get_unit_file_state(Unit *u);
 560 int unit_get_unit_file_preset(Unit *u);
 561
 562 Unit* unit_ref_set(UnitRef *ref, Unit *u);
 563 void unit_ref_unset(UnitRef *ref);
 564
 565 #define UNIT_DEREF(ref) ((ref).unit)
 566 #define UNIT_ISSET(ref) (!!(ref).unit)
 567
 568 int unit_patch_contexts(Unit *u);
 569
 570 ExecContext *unit_get_exec_context(Unit *u) _pure_;
 571 KillContext *unit_get_kill_context(Unit *u) _pure_;
 572 CGroupContext *unit_get_cgroup_context(Unit *u) _pure_;
 573
 574 ExecRuntime *unit_get_exec_runtime(Unit *u) _pure_;
 575
 576 int unit_setup_exec_runtime(Unit *u);
 577
 578 int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data);
 579 int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) _printf_(4,5);
 580
 581 int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data);
 582 int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) _printf_(4,5);
 583
 584 int unit_kill_context(Unit *u, KillContext *c, KillOperation k, pid_t main_pid, pid_t control_pid, bool main_pid_alien);
 585
 586 int unit_make_transient(Unit *u);
 587
 588 int unit_require_mounts_for(Unit *u, const char *path);
 589
 590 bool unit_type_supported(UnitType t);
 591
 592 static inline bool unit_supported(Unit *u) {
 593         return unit_type_supported(u->type);
 594 }
 595
 596 void unit_warn_if_dir_nonempty(Unit *u, const char* where);
 597 int unit_fail_if_symlink(Unit *u, const char* where);
 598
 599 /* Macros which append UNIT= or USER_UNIT= to the message */
 600
 601 #define log_unit_full(unit, level, error, ...)                          \
 602         ({                                                              \
 603                 Unit *_u = (unit);                                      \
 604                 _u ? log_object_internal(level, error, __FILE__, __LINE__, __func__, _u->manager->unit_log_field, _u->id, ##__VA_ARGS__) : \
 605                         log_internal(level, error, __FILE__, __LINE__, __func__, ##__VA_ARGS__); \
 606         })
 607
 608 #define log_unit_debug(unit, ...)   log_unit_full(unit, LOG_DEBUG, 0, ##__VA_ARGS__)
 609 #define log_unit_info(unit, ...)    log_unit_full(unit, LOG_INFO, 0, ##__VA_ARGS__)
 610 #define log_unit_notice(unit, ...)  log_unit_full(unit, LOG_NOTICE, 0, ##__VA_ARGS__)
 611 #define log_unit_warning(unit, ...) log_unit_full(unit, LOG_WARNING, 0, ##__VA_ARGS__)
 612 #define log_unit_error(unit, ...)   log_unit_full(unit, LOG_ERR, 0, ##__VA_ARGS__)
 613
 614 #define log_unit_debug_errno(unit, error, ...)   log_unit_full(unit, LOG_DEBUG, error, ##__VA_ARGS__)
 615 #define log_unit_info_errno(unit, error, ...)    log_unit_full(unit, LOG_INFO, error, ##__VA_ARGS__)
 616 #define log_unit_notice_errno(unit, error, ...)  log_unit_full(unit, LOG_NOTICE, error, ##__VA_ARGS__)
 617 #define log_unit_warning_errno(unit, error, ...) log_unit_full(unit, LOG_WARNING, error, ##__VA_ARGS__)
 618 #define log_unit_error_errno(unit, error, ...)   log_unit_full(unit, LOG_ERR, error, ##__VA_ARGS__)
 619
 620 #define LOG_UNIT_MESSAGE(unit, fmt, ...) "MESSAGE=%s: " fmt, (unit)->id, ##__VA_ARGS__
 621 #define LOG_UNIT_ID(unit) (unit)->manager->unit_log_format_string, (unit)->id