1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
7 #include <sys/socket.h>
12 /* Circular dependency with manager.h, needs to be defined before local includes */
13 typedef enum UnitMountDependencyType
{
16 _UNIT_MOUNT_DEPENDENCY_TYPE_MAX
,
17 _UNIT_MOUNT_DEPENDENCY_TYPE_INVALID
= -EINVAL
,
18 } UnitMountDependencyType
;
20 #include "bpf-program.h"
22 #include "condition.h"
23 #include "emergency-action.h"
28 #include "show-status.h"
29 #include "unit-file.h"
31 typedef struct UnitRef UnitRef
;
33 typedef enum KillOperation
{
35 KILL_TERMINATE_AND_LOG
,
40 _KILL_OPERATION_INVALID
= -EINVAL
,
43 typedef enum CollectMode
{
45 COLLECT_INACTIVE_OR_FAILED
,
47 _COLLECT_MODE_INVALID
= -EINVAL
,
50 static inline bool UNIT_IS_ACTIVE_OR_RELOADING(UnitActiveState t
) {
51 return IN_SET(t
, UNIT_ACTIVE
, UNIT_RELOADING
);
54 static inline bool UNIT_IS_ACTIVE_OR_ACTIVATING(UnitActiveState t
) {
55 return IN_SET(t
, UNIT_ACTIVE
, UNIT_ACTIVATING
, UNIT_RELOADING
);
58 static inline bool UNIT_IS_INACTIVE_OR_DEACTIVATING(UnitActiveState t
) {
59 return IN_SET(t
, UNIT_INACTIVE
, UNIT_FAILED
, UNIT_DEACTIVATING
);
62 static inline bool UNIT_IS_INACTIVE_OR_FAILED(UnitActiveState t
) {
63 return IN_SET(t
, UNIT_INACTIVE
, UNIT_FAILED
);
66 static inline bool UNIT_IS_LOAD_COMPLETE(UnitLoadState t
) {
67 return t
>= 0 && t
< _UNIT_LOAD_STATE_MAX
&& t
!= UNIT_STUB
&& t
!= UNIT_MERGED
;
70 /* Stores the 'reason' a dependency was created as a bit mask, i.e. due to which configuration source it came to be. We
71 * use this so that we can selectively flush out parts of dependencies again. Note that the same dependency might be
72 * created as a result of multiple "reasons", hence the bitmask. */
73 typedef enum UnitDependencyMask
{
74 /* Configured directly by the unit file, .wants/.requires symlink or drop-in, or as an immediate result of a
75 * non-dependency option configured that way. */
76 UNIT_DEPENDENCY_FILE
= 1 << 0,
78 /* As unconditional implicit dependency (not affected by unit configuration — except by the unit name and
80 UNIT_DEPENDENCY_IMPLICIT
= 1 << 1,
82 /* A dependency effected by DefaultDependencies=yes. Note that dependencies marked this way are conceptually
83 * just a subset of UNIT_DEPENDENCY_FILE, as DefaultDependencies= is itself a unit file setting that can only
84 * be set in unit files. We make this two separate bits only to help debugging how dependencies came to be. */
85 UNIT_DEPENDENCY_DEFAULT
= 1 << 2,
87 /* A dependency created from udev rules */
88 UNIT_DEPENDENCY_UDEV
= 1 << 3,
90 /* A dependency created because of some unit's RequiresMountsFor= setting */
91 UNIT_DEPENDENCY_PATH
= 1 << 4,
93 /* A dependency initially configured from the mount unit file however the dependency will be updated
94 * from /proc/self/mountinfo as soon as the kernel will make the entry for that mount available in
96 UNIT_DEPENDENCY_MOUNT_FILE
= 1 << 5,
98 /* A dependency created or updated because of data read from /proc/self/mountinfo */
99 UNIT_DEPENDENCY_MOUNTINFO
= 1 << 6,
101 /* A dependency created because of data read from /proc/swaps and no other configuration source */
102 UNIT_DEPENDENCY_PROC_SWAP
= 1 << 7,
104 /* A dependency for units in slices assigned by directly setting Slice= */
105 UNIT_DEPENDENCY_SLICE_PROPERTY
= 1 << 8,
107 _UNIT_DEPENDENCY_MASK_FULL
= (1 << 9) - 1,
108 } UnitDependencyMask
;
110 /* The Unit's dependencies[] hashmaps use this structure as value. It has the same size as a void pointer, and thus can
111 * be stored directly as hashmap value, without any indirection. Note that this stores two masks, as both the origin
112 * and the destination of a dependency might have created it. */
113 typedef union UnitDependencyInfo
{
116 UnitDependencyMask origin_mask
:16;
117 UnitDependencyMask destination_mask
:16;
119 } UnitDependencyInfo
;
121 /* Store information about why a unit was activated.
122 * We start with trigger units (.path/.timer), eventually it will be expanded to include more metadata. */
123 typedef struct ActivationDetails
{
125 UnitType trigger_unit_type
;
126 char *trigger_unit_name
;
129 /* For casting an activation event into the various unit-specific types */
130 #define DEFINE_ACTIVATION_DETAILS_CAST(UPPERCASE, MixedCase, UNIT_TYPE) \
131 static inline MixedCase* UPPERCASE(ActivationDetails *a) { \
132 if (_unlikely_(!a || a->trigger_unit_type != UNIT_##UNIT_TYPE)) \
135 return (MixedCase*) a; \
138 /* For casting the various unit types into a unit */
139 #define ACTIVATION_DETAILS(u) \
141 typeof(u) _u_ = (u); \
142 ActivationDetails *_w_ = _u_ ? &(_u_)->meta : NULL; \
146 ActivationDetails
*activation_details_new(Unit
*trigger_unit
);
147 ActivationDetails
*activation_details_ref(ActivationDetails
*p
);
148 ActivationDetails
*activation_details_unref(ActivationDetails
*p
);
149 void activation_details_serialize(ActivationDetails
*p
, FILE *f
);
150 int activation_details_deserialize(const char *key
, const char *value
, ActivationDetails
**info
);
151 int activation_details_append_env(ActivationDetails
*info
, char ***strv
);
152 int activation_details_append_pair(ActivationDetails
*info
, char ***strv
);
153 DEFINE_TRIVIAL_CLEANUP_FUNC(ActivationDetails
*, activation_details_unref
);
155 typedef struct ActivationDetailsVTable
{
156 /* How much memory does an object of this activation type need */
159 /* This should reset all type-specific variables. This should not allocate memory, and is called
160 * with zero-initialized data. It should hence only initialize variables that need to be set != 0. */
161 void (*init
)(ActivationDetails
*info
, Unit
*trigger_unit
);
163 /* This should free all type-specific variables. It should be idempotent. */
164 void (*done
)(ActivationDetails
*info
);
166 /* This should serialize all type-specific variables. */
167 void (*serialize
)(ActivationDetails
*info
, FILE *f
);
169 /* This should deserialize all type-specific variables, one at a time. */
170 int (*deserialize
)(const char *key
, const char *value
, ActivationDetails
**info
);
172 /* This should format the type-specific variables for the env block of the spawned service,
173 * and return the number of added items. */
174 int (*append_env
)(ActivationDetails
*info
, char ***strv
);
176 /* This should append type-specific variables as key/value pairs for the D-Bus property of the job,
177 * and return the number of added pairs. */
178 int (*append_pair
)(ActivationDetails
*info
, char ***strv
);
179 } ActivationDetailsVTable
;
181 extern const ActivationDetailsVTable
* const activation_details_vtable
[_UNIT_TYPE_MAX
];
183 static inline const ActivationDetailsVTable
* ACTIVATION_DETAILS_VTABLE(const ActivationDetails
*a
) {
185 assert(a
->trigger_unit_type
< _UNIT_TYPE_MAX
);
187 return activation_details_vtable
[a
->trigger_unit_type
];
190 /* Newer LLVM versions don't like implicit casts from large pointer types to smaller enums, hence let's add
191 * explicit type-safe helpers for that. */
192 static inline UnitDependency
UNIT_DEPENDENCY_FROM_PTR(const void *p
) {
193 return PTR_TO_INT(p
);
196 static inline void* UNIT_DEPENDENCY_TO_PTR(UnitDependency d
) {
197 return INT_TO_PTR(d
);
203 /* Keeps tracks of references to a unit. This is useful so
204 * that we can merge two units if necessary and correct all
205 * references to them */
207 Unit
*source
, *target
;
208 LIST_FIELDS(UnitRef
, refs_by_target
);
211 /* The generic, dynamic definition of the unit */
212 typedef struct Unit
{
216 UnitLoadState load_state
;
219 char *id
; /* The one special name that we use for identification */
222 Set
*aliases
; /* All the other names. */
224 /* For each dependency type we can look up another Hashmap with this, whose key is a Unit* object,
225 * and whose value encodes why the dependency exists, using the UnitDependencyInfo type. i.e. a
226 * Hashmap(UnitDependency → Hashmap(Unit* → UnitDependencyInfo)) */
227 Hashmap
*dependencies
;
229 /* Similar, for RequiresMountsFor= and WantsMountsFor= path dependencies. The key is the path, the
230 * value the UnitDependencyInfo type */
231 Hashmap
*mounts_for
[_UNIT_MOUNT_DEPENDENCY_TYPE_MAX
];
234 char **documentation
;
236 /* The SELinux context used for checking access to this unit read off the unit file at load time (do
237 * not confuse with the selinux_context field in ExecContext which is the SELinux context we'll set
239 char *access_selinux_context
;
241 char *fragment_path
; /* if loaded from a config file this is the primary path to it */
242 char *source_path
; /* if converted, the source file */
245 usec_t fragment_not_found_timestamp_hash
;
246 usec_t fragment_mtime
;
250 /* If this is a transient unit we are currently writing, this is where we are writing it to */
251 FILE *transient_file
;
254 sd_bus_message
*pending_freezer_invocation
;
255 FreezerState freezer_state
;
257 /* Job timeout and action to take */
258 EmergencyAction job_timeout_action
;
260 usec_t job_running_timeout
;
261 char *job_timeout_reboot_arg
;
263 /* If there is something to do with this unit, then this is the installed job for it */
266 /* JOB_NOP jobs are special and can be installed without disturbing the real job. */
269 /* The slot used for watching NameOwnerChanged signals */
270 sd_bus_slot
*match_bus_slot
;
271 sd_bus_slot
*get_name_owner_slot
;
273 /* References to this unit from clients */
274 sd_bus_track
*bus_track
;
275 char **deserialized_refs
;
277 /* References to this */
278 LIST_HEAD(UnitRef
, refs_by_target
);
280 /* Conditions to check */
281 LIST_HEAD(Condition
, conditions
);
282 LIST_HEAD(Condition
, asserts
);
284 dual_timestamp condition_timestamp
;
285 dual_timestamp assert_timestamp
;
287 /* Updated whenever the low-level state changes */
288 dual_timestamp state_change_timestamp
;
290 /* Updated whenever the (high-level) active state enters or leaves the active or inactive states */
291 dual_timestamp inactive_exit_timestamp
;
292 dual_timestamp active_enter_timestamp
;
293 dual_timestamp active_exit_timestamp
;
294 dual_timestamp inactive_enter_timestamp
;
297 LIST_FIELDS(Unit
, units_by_type
);
300 LIST_FIELDS(Unit
, load_queue
);
303 LIST_FIELDS(Unit
, dbus_queue
);
306 LIST_FIELDS(Unit
, cleanup_queue
);
309 LIST_FIELDS(Unit
, gc_queue
);
311 /* CGroup realize members queue */
312 LIST_FIELDS(Unit
, cgroup_realize_queue
);
314 /* cgroup empty queue */
315 LIST_FIELDS(Unit
, cgroup_empty_queue
);
317 /* cgroup OOM queue */
318 LIST_FIELDS(Unit
, cgroup_oom_queue
);
320 /* Target dependencies queue */
321 LIST_FIELDS(Unit
, target_deps_queue
);
323 /* Queue of units with StopWhenUnneeded= set that shall be checked for clean-up. */
324 LIST_FIELDS(Unit
, stop_when_unneeded_queue
);
326 /* Queue of units that have an Uphold= dependency from some other unit, and should be checked for starting */
327 LIST_FIELDS(Unit
, start_when_upheld_queue
);
329 /* Queue of units that have a BindTo= dependency on some other unit, and should possibly be shut down */
330 LIST_FIELDS(Unit
, stop_when_bound_queue
);
332 /* Queue of units that should be checked if they can release resources now */
333 LIST_FIELDS(Unit
, release_resources_queue
);
335 /* PIDs we keep an eye on. Note that a unit might have many more, but these are the ones we care
336 * enough about to process SIGCHLD for */
337 Set
*pids
; /* → PidRef* */
339 /* Used in SIGCHLD and sd_notify() message event invocation logic to avoid that we dispatch the same event
340 * multiple times on the same unit. */
344 /* Used during GC sweeps */
347 /* Error code when we didn't manage to load the unit (negative) */
350 /* Put a ratelimit on unit starting */
351 RateLimit start_ratelimit
;
352 EmergencyAction start_limit_action
;
354 /* The unit has been marked for reload, restart, etc. Stored as 1u << marker1 | 1u << marker2. */
357 /* What to do on failure or success */
358 EmergencyAction success_action
, failure_action
;
359 int success_action_exit_status
, failure_action_exit_status
;
362 /* Make sure we never enter endless loops with the StopWhenUnneeded=, BindsTo=, Uphold= logic */
363 RateLimit auto_start_stop_ratelimit
;
364 sd_event_source
*auto_start_stop_event_source
;
366 /* Reference to a specific UID/GID */
370 /* Cached unit file state and preset */
371 UnitFileState unit_file_state
;
372 PresetAction unit_file_preset
;
374 /* Low-priority event source which is used to remove watched PIDs that have gone away, and subscribe to any new
375 * ones which might have appeared. */
376 sd_event_source
*rewatch_pids_event_source
;
378 /* How to start OnSuccess=/OnFailure= units */
379 JobMode on_success_job_mode
;
380 JobMode on_failure_job_mode
;
382 /* If the job had a specific trigger that needs to be advertised (eg: a path unit), store it. */
383 ActivationDetails
*activation_details
;
385 /* Tweaking the GC logic */
386 CollectMode collect_mode
;
388 /* The current invocation ID */
389 sd_id128_t invocation_id
;
390 char invocation_id_string
[SD_ID128_STRING_MAX
]; /* useful when logging */
392 /* Garbage collect us we nobody wants or requires us anymore */
393 bool stop_when_unneeded
;
395 /* Create default dependencies */
396 bool default_dependencies
;
398 /* Configure so that the unit survives a system transition without stopping/starting. */
399 bool survive_final_kill_signal
;
401 /* Refuse manual starting, allow starting only indirectly via dependency. */
402 bool refuse_manual_start
;
404 /* Don't allow the user to stop this unit manually, allow stopping only indirectly via dependency. */
405 bool refuse_manual_stop
;
407 /* Allow isolation requests */
410 /* Ignore this unit when isolating */
411 bool ignore_on_isolate
;
413 /* Did the last condition check succeed? */
414 bool condition_result
;
417 /* Is this a transient unit? */
420 /* Is this a unit that is always running and cannot be stopped? */
423 /* Booleans indicating membership of this unit in the various queues */
424 bool in_load_queue
:1;
425 bool in_dbus_queue
:1;
426 bool in_cleanup_queue
:1;
428 bool in_cgroup_realize_queue
:1;
429 bool in_cgroup_empty_queue
:1;
430 bool in_cgroup_oom_queue
:1;
431 bool in_target_deps_queue
:1;
432 bool in_stop_when_unneeded_queue
:1;
433 bool in_start_when_upheld_queue
:1;
434 bool in_stop_when_bound_queue
:1;
435 bool in_release_resources_queue
:1;
437 bool sent_dbus_new_signal
:1;
439 bool job_running_timeout_set
:1;
444 bool start_limit_hit
:1;
446 /* Did we already invoke unit_coldplug() for this unit? */
449 /* For transient units: whether to add a bus track reference after creating the unit */
450 bool bus_track_add
:1;
452 /* Remember which unit state files we created */
453 bool exported_invocation_id
:1;
454 bool exported_log_level_max
:1;
455 bool exported_log_extra_fields
:1;
456 bool exported_log_ratelimit_interval
:1;
457 bool exported_log_ratelimit_burst
:1;
459 /* When writing transient unit files, stores which section we stored last. If < 0, we didn't write any yet. If
460 * == 0 we are in the [Unit] section, if > 0 we are in the unit type-specific section. */
461 signed int last_section_private
:2;
464 typedef struct UnitStatusMessageFormats
{
465 const char *starting_stopping
[2];
466 const char *finished_start_job
[_JOB_RESULT_MAX
];
467 const char *finished_stop_job
[_JOB_RESULT_MAX
];
468 /* If this entry is present, it'll be called to provide a context-dependent format string,
469 * or NULL to fall back to finished_{start,stop}_job; if those are NULL too, fall back to generic. */
470 const char *(*finished_job
)(Unit
*u
, JobType t
, JobResult result
);
471 } UnitStatusMessageFormats
;
473 /* Flags used when writing drop-in files or transient unit files */
474 typedef enum UnitWriteFlags
{
475 /* Write a runtime unit file or drop-in (i.e. one below /run) */
476 UNIT_RUNTIME
= 1 << 0,
478 /* Write a persistent drop-in (i.e. one below /etc) */
479 UNIT_PERSISTENT
= 1 << 1,
481 /* Place this item in the per-unit-type private section, instead of [Unit] */
482 UNIT_PRIVATE
= 1 << 2,
484 /* Apply specifier escaping */
485 UNIT_ESCAPE_SPECIFIERS
= 1 << 3,
487 /* Escape elements of ExecStart= syntax, incl. prevention of variable expansion */
488 UNIT_ESCAPE_EXEC_SYNTAX_ENV
= 1 << 4,
490 /* Escape elements of ExecStart=: syntax (no variable expansion) */
491 UNIT_ESCAPE_EXEC_SYNTAX
= 1 << 5,
493 /* Apply C escaping before writing */
494 UNIT_ESCAPE_C
= 1 << 6,
497 /* Returns true if neither persistent, nor runtime storage is requested, i.e. this is a check invocation only */
498 static inline bool UNIT_WRITE_FLAGS_NOOP(UnitWriteFlags flags
) {
499 return (flags
& (UNIT_RUNTIME
|UNIT_PERSISTENT
)) == 0;
504 /* The static const, immutable data about a specific unit type */
505 typedef struct UnitVTable
{
506 /* How much memory does an object of this unit type need */
509 /* If greater than 0, the offset into the object where
510 * ExecContext is found, if the unit type has that */
511 size_t exec_context_offset
;
513 /* If greater than 0, the offset into the object where
514 * CGroupContext is found, if the unit type has that */
515 size_t cgroup_context_offset
;
517 /* If greater than 0, the offset into the object where
518 * KillContext is found, if the unit type has that */
519 size_t kill_context_offset
;
521 /* If greater than 0, the offset into the object where the pointer to ExecRuntime is found, if
522 * the unit type has that */
523 size_t exec_runtime_offset
;
525 /* If greater than 0, the offset into the object where the pointer to CGroupRuntime is found, if the
526 * unit type has that */
527 size_t cgroup_runtime_offset
;
529 /* The name of the configuration file section with the private settings of this unit */
530 const char *private_section
;
532 /* Config file sections this unit type understands, separated
534 const char *sections
;
536 /* This should reset all type-specific variables. This should
537 * not allocate memory, and is called with zero-initialized
538 * data. It should hence only initialize variables that need
540 void (*init
)(Unit
*u
);
542 /* This should free all type-specific variables. It should be
544 void (*done
)(Unit
*u
);
546 /* Actually load data from disk. This may fail, and should set
547 * load_state to UNIT_LOADED, UNIT_MERGED or leave it at
548 * UNIT_STUB if no configuration could be found. */
549 int (*load
)(Unit
*u
);
551 /* During deserialization we only record the intended state to return to. With coldplug() we actually put the
552 * deserialized state in effect. This is where unit_notify() should be called to start things up. Note that
553 * this callback is invoked *before* we leave the reloading state of the manager, i.e. *before* we consider the
554 * reloading to be complete. Thus, this callback should just restore the exact same state for any unit that was
555 * in effect before the reload, i.e. units should not catch up with changes happened during the reload. That's
556 * what catchup() below is for. */
557 int (*coldplug
)(Unit
*u
);
559 /* This is called shortly after all units' coldplug() call was invoked, and *after* the manager left the
560 * reloading state. It's supposed to catch up with state changes due to external events we missed so far (for
561 * example because they took place while we were reloading/reexecing) */
562 void (*catchup
)(Unit
*u
);
564 void (*dump
)(Unit
*u
, FILE *f
, const char *prefix
);
566 int (*start
)(Unit
*u
);
567 int (*stop
)(Unit
*u
);
568 int (*reload
)(Unit
*u
);
570 /* Clear out the various runtime/state/cache/logs/configuration data */
571 int (*clean
)(Unit
*u
, ExecCleanMask m
);
573 /* Freeze or thaw the unit. Returns > 0 to indicate that the request will be handled asynchronously; unit_frozen
574 * or unit_thawed should be called once the operation is done. Returns 0 if done successfully, or < 0 on error. */
575 int (*freezer_action
)(Unit
*u
, FreezerAction a
);
576 bool (*can_freeze
)(Unit
*u
);
578 /* Return which kind of data can be cleaned */
579 int (*can_clean
)(Unit
*u
, ExecCleanMask
*ret
);
581 bool (*can_reload
)(Unit
*u
);
583 /* Serialize state and file descriptors that should be carried over into the new
584 * instance after reexecution. */
585 int (*serialize
)(Unit
*u
, FILE *f
, FDSet
*fds
);
587 /* Restore one item from the serialization */
588 int (*deserialize_item
)(Unit
*u
, const char *key
, const char *data
, FDSet
*fds
);
590 /* Try to match up fds with what we need for this unit */
591 void (*distribute_fds
)(Unit
*u
, FDSet
*fds
);
593 /* Boils down the more complex internal state of this unit to
594 * a simpler one that the engine can understand */
595 UnitActiveState (*active_state
)(Unit
*u
);
597 /* Returns the substate specific to this unit type as
598 * string. This is purely information so that we can give the
599 * user a more fine grained explanation in which actual state a
601 const char* (*sub_state_to_string
)(Unit
*u
);
603 /* Additionally to UnitActiveState determine whether unit is to be restarted. */
604 bool (*will_restart
)(Unit
*u
);
606 /* Return false when there is a reason to prevent this unit from being gc'ed
607 * even though nothing references it and it isn't active in any way. */
608 bool (*may_gc
)(Unit
*u
);
610 /* Return true when the unit is not controlled by the manager (e.g. extrinsic mounts). */
611 bool (*is_extrinsic
)(Unit
*u
);
613 /* When the unit is not running and no job for it queued we shall release its runtime resources */
614 void (*release_resources
)(Unit
*u
);
616 /* Invoked on every child that died */
617 void (*sigchld_event
)(Unit
*u
, pid_t pid
, int code
, int status
);
619 /* Reset failed state if we are in failed state */
620 void (*reset_failed
)(Unit
*u
);
622 /* Called whenever any of the cgroups this unit watches for ran empty */
623 void (*notify_cgroup_empty
)(Unit
*u
);
625 /* Called whenever an OOM kill event on this unit was seen */
626 void (*notify_cgroup_oom
)(Unit
*u
, bool managed_oom
);
628 /* Called whenever a process of this unit sends us a message */
629 void (*notify_message
)(Unit
*u
, const struct ucred
*ucred
, char * const *tags
, FDSet
*fds
);
631 /* Called whenever a name this Unit registered for comes or goes away. */
632 void (*bus_name_owner_change
)(Unit
*u
, const char *new_owner
);
634 /* Called for each property that is being set */
635 int (*bus_set_property
)(Unit
*u
, const char *name
, sd_bus_message
*message
, UnitWriteFlags flags
, sd_bus_error
*error
);
637 /* Called after at least one property got changed to apply the necessary change */
638 int (*bus_commit_properties
)(Unit
*u
);
640 /* Return the unit this unit is following */
641 Unit
*(*following
)(Unit
*u
);
643 /* Return the set of units that are following each other */
644 int (*following_set
)(Unit
*u
, Set
**s
);
646 /* Invoked each time a unit this unit is triggering changes
647 * state or gains/loses a job */
648 void (*trigger_notify
)(Unit
*u
, Unit
*trigger
);
650 /* Called whenever CLOCK_REALTIME made a jump */
651 void (*time_change
)(Unit
*u
);
653 /* Called whenever /etc/localtime was modified */
654 void (*timezone_change
)(Unit
*u
);
656 /* Returns the next timeout of a unit */
657 int (*get_timeout
)(Unit
*u
, usec_t
*timeout
);
659 /* Returns the start timeout of a unit */
660 usec_t (*get_timeout_start_usec
)(Unit
*u
);
662 /* Returns the main PID if there is any defined, or NULL. */
663 PidRef
* (*main_pid
)(Unit
*u
, bool *ret_is_alien
);
665 /* Returns the control PID if there is any defined, or NULL. */
666 PidRef
* (*control_pid
)(Unit
*u
);
668 /* Returns true if the unit currently needs access to the console */
669 bool (*needs_console
)(Unit
*u
);
671 /* Returns the exit status to propagate in case of FailureAction=exit/SuccessAction=exit; usually returns the
672 * exit code of the "main" process of the service or similar. */
673 int (*exit_status
)(Unit
*u
);
675 /* Return a copy of the status string pointer. */
676 const char* (*status_text
)(Unit
*u
);
678 /* Like the enumerate() callback further down, but only enumerates the perpetual units, i.e. all units that
679 * unconditionally exist and are always active. The main reason to keep both enumeration functions separate is
680 * philosophical: the state of perpetual units should be put in place by coldplug(), while the state of those
681 * discovered through regular enumeration should be put in place by catchup(), see below. */
682 void (*enumerate_perpetual
)(Manager
*m
);
684 /* This is called for each unit type and should be used to enumerate units already existing in the system
685 * internally and load them. However, everything that is loaded here should still stay in inactive state. It is
686 * the job of the catchup() call above to put the units into the discovered state. */
687 void (*enumerate
)(Manager
*m
);
689 /* Type specific cleanups. */
690 void (*shutdown
)(Manager
*m
);
692 /* If this function is set and returns false all jobs for units
693 * of this type will immediately fail. */
694 bool (*supported
)(void);
696 /* If this function is set, it's invoked first as part of starting a unit to allow start rate
697 * limiting checks to occur before we do anything else. */
698 int (*can_start
)(Unit
*u
);
700 /* Returns > 0 if the whole subsystem is ratelimited, and new start operations should not be started
701 * for this unit type right now. */
702 int (*subsystem_ratelimited
)(Manager
*m
);
704 /* The strings to print in status messages */
705 UnitStatusMessageFormats status_message_formats
;
707 /* True if transient units of this type are OK */
710 /* True if cgroup delegation is permissible */
713 /* True if the unit type triggers other units, i.e. can have a UNIT_TRIGGERS dependency */
716 /* True if the unit type knows a failure state, and thus can be source of an OnFailure= dependency */
719 /* True if units of this type shall be startable only once and then never again */
722 /* Do not serialize this unit when preparing for root switch */
723 bool exclude_from_switch_root_serialization
;
725 /* True if queued jobs of this type should be GC'ed if no other job needs them anymore */
728 /* True if systemd-oomd can monitor and act on this unit's recursive children's cgroups */
729 bool can_set_managed_oom
;
731 /* If true, we'll notify plymouth about this unit */
732 bool notify_plymouth
;
734 /* The audit events to generate on start + stop (or 0 if none shall be generated) */
735 int audit_start_message_type
;
736 int audit_stop_message_type
;
739 extern const UnitVTable
* const unit_vtable
[_UNIT_TYPE_MAX
];
741 static inline const UnitVTable
* UNIT_VTABLE(const Unit
*u
) {
742 return unit_vtable
[u
->type
];
745 /* For casting a unit into the various unit types */
746 #define DEFINE_CAST(UPPERCASE, MixedCase) \
747 static inline MixedCase* UPPERCASE(Unit *u) { \
748 if (_unlikely_(!u || u->type != UNIT_##UPPERCASE)) \
751 return (MixedCase*) u; \
754 /* For casting the various unit types into a unit */
757 typeof(u) _u_ = (u); \
758 Unit *_w_ = _u_ ? &(_u_)->meta : NULL; \
762 #define UNIT_HAS_EXEC_CONTEXT(u) (UNIT_VTABLE(u)->exec_context_offset > 0)
763 #define UNIT_HAS_CGROUP_CONTEXT(u) (UNIT_VTABLE(u)->cgroup_context_offset > 0)
764 #define UNIT_HAS_KILL_CONTEXT(u) (UNIT_VTABLE(u)->kill_context_offset > 0)
766 Unit
* unit_has_dependency(const Unit
*u
, UnitDependencyAtom atom
, Unit
*other
);
767 int unit_get_dependency_array(const Unit
*u
, UnitDependencyAtom atom
, Unit
***ret_array
);
768 int unit_get_transitive_dependency_set(Unit
*u
, UnitDependencyAtom atom
, Set
**ret
);
770 static inline Hashmap
* unit_get_dependencies(Unit
*u
, UnitDependency d
) {
771 return hashmap_get(u
->dependencies
, UNIT_DEPENDENCY_TO_PTR(d
));
774 static inline Unit
* UNIT_TRIGGER(Unit
*u
) {
775 return unit_has_dependency(u
, UNIT_ATOM_TRIGGERS
, NULL
);
778 static inline Unit
* UNIT_GET_SLICE(const Unit
*u
) {
779 return unit_has_dependency(u
, UNIT_ATOM_IN_SLICE
, NULL
);
782 Unit
* unit_new(Manager
*m
, size_t size
);
783 Unit
* unit_free(Unit
*u
);
784 DEFINE_TRIVIAL_CLEANUP_FUNC(Unit
*, unit_free
);
786 int unit_new_for_name(Manager
*m
, size_t size
, const char *name
, Unit
**ret
);
787 int unit_add_name(Unit
*u
, const char *name
);
789 int unit_add_dependency(Unit
*u
, UnitDependency d
, Unit
*other
, bool add_reference
, UnitDependencyMask mask
);
790 int unit_add_two_dependencies(Unit
*u
, UnitDependency d
, UnitDependency e
, Unit
*other
, bool add_reference
, UnitDependencyMask mask
);
792 int unit_add_dependency_by_name(Unit
*u
, UnitDependency d
, const char *name
, bool add_reference
, UnitDependencyMask mask
);
793 int unit_add_two_dependencies_by_name(Unit
*u
, UnitDependency d
, UnitDependency e
, const char *name
, bool add_reference
, UnitDependencyMask mask
);
795 int unit_add_exec_dependencies(Unit
*u
, ExecContext
*c
);
797 int unit_choose_id(Unit
*u
, const char *name
);
798 int unit_set_description(Unit
*u
, const char *description
);
800 void unit_release_resources(Unit
*u
);
802 bool unit_may_gc(Unit
*u
);
804 static inline bool unit_is_extrinsic(Unit
*u
) {
805 return u
->perpetual
||
806 (UNIT_VTABLE(u
)->is_extrinsic
&& UNIT_VTABLE(u
)->is_extrinsic(u
));
809 static inline const char* unit_status_text(Unit
*u
) {
810 if (u
&& UNIT_VTABLE(u
)->status_text
)
811 return UNIT_VTABLE(u
)->status_text(u
);
815 void unit_add_to_load_queue(Unit
*u
);
816 void unit_add_to_dbus_queue(Unit
*u
);
817 void unit_add_to_cleanup_queue(Unit
*u
);
818 void unit_add_to_gc_queue(Unit
*u
);
819 void unit_add_to_target_deps_queue(Unit
*u
);
820 void unit_submit_to_stop_when_unneeded_queue(Unit
*u
);
821 void unit_submit_to_start_when_upheld_queue(Unit
*u
);
822 void unit_submit_to_stop_when_bound_queue(Unit
*u
);
823 void unit_submit_to_release_resources_queue(Unit
*u
);
825 int unit_merge(Unit
*u
, Unit
*other
);
826 int unit_merge_by_name(Unit
*u
, const char *other
);
828 Unit
*unit_follow_merge(Unit
*u
) _pure_
;
830 int unit_load_fragment_and_dropin(Unit
*u
, bool fragment_required
);
831 int unit_load(Unit
*unit
);
833 int unit_set_slice(Unit
*u
, Unit
*slice
);
834 int unit_set_default_slice(Unit
*u
);
836 const char *unit_description(Unit
*u
) _pure_
;
837 const char *unit_status_string(Unit
*u
, char **combined
);
839 bool unit_has_name(const Unit
*u
, const char *name
);
841 UnitActiveState
unit_active_state(Unit
*u
);
842 FreezerState
unit_freezer_state(Unit
*u
);
844 const char* unit_sub_state_to_string(Unit
*u
);
846 bool unit_can_reload(Unit
*u
) _pure_
;
847 bool unit_can_start(Unit
*u
) _pure_
;
848 bool unit_can_stop(Unit
*u
) _pure_
;
849 bool unit_can_isolate(Unit
*u
) _pure_
;
851 int unit_start(Unit
*u
, ActivationDetails
*details
);
852 int unit_stop(Unit
*u
);
853 int unit_reload(Unit
*u
);
855 int unit_kill(Unit
*u
, KillWho w
, int signo
, int code
, int value
, sd_bus_error
*ret_error
);
857 void unit_notify_cgroup_oom(Unit
*u
, bool managed_oom
);
859 void unit_notify(Unit
*u
, UnitActiveState os
, UnitActiveState ns
, bool reload_success
);
861 int unit_watch_pidref(Unit
*u
, const PidRef
*pid
, bool exclusive
);
862 int unit_watch_pid(Unit
*u
, pid_t pid
, bool exclusive
);
863 void unit_unwatch_pidref(Unit
*u
, const PidRef
*pid
);
864 void unit_unwatch_pid(Unit
*u
, pid_t pid
);
865 void unit_unwatch_all_pids(Unit
*u
);
866 void unit_unwatch_pidref_done(Unit
*u
, PidRef
*pidref
);
868 int unit_enqueue_rewatch_pids(Unit
*u
);
869 void unit_dequeue_rewatch_pids(Unit
*u
);
871 int unit_install_bus_match(Unit
*u
, sd_bus
*bus
, const char *name
);
872 int unit_watch_bus_name(Unit
*u
, const char *name
);
873 void unit_unwatch_bus_name(Unit
*u
, const char *name
);
875 bool unit_job_is_applicable(Unit
*u
, JobType j
);
877 int set_unit_path(const char *p
);
879 char *unit_dbus_path(Unit
*u
);
880 char *unit_dbus_path_invocation_id(Unit
*u
);
882 int unit_load_related_unit(Unit
*u
, const char *type
, Unit
**_found
);
884 int unit_add_node_dependency(Unit
*u
, const char *what
, UnitDependency d
, UnitDependencyMask mask
);
885 int unit_add_blockdev_dependency(Unit
*u
, const char *what
, UnitDependencyMask mask
);
887 int unit_coldplug(Unit
*u
);
888 void unit_catchup(Unit
*u
);
890 void unit_status_printf(Unit
*u
, StatusType status_type
, const char *status
, const char *format
, const char *ident
) _printf_(4, 0);
892 bool unit_need_daemon_reload(Unit
*u
);
894 void unit_reset_failed(Unit
*u
);
896 Unit
*unit_following(Unit
*u
);
897 int unit_following_set(Unit
*u
, Set
**s
);
899 const char *unit_slice_name(Unit
*u
);
901 bool unit_stop_pending(Unit
*u
) _pure_
;
902 bool unit_inactive_or_pending(Unit
*u
) _pure_
;
903 bool unit_active_or_pending(Unit
*u
);
904 bool unit_will_restart_default(Unit
*u
);
905 bool unit_will_restart(Unit
*u
);
907 int unit_add_default_target_dependency(Unit
*u
, Unit
*target
);
909 void unit_start_on_failure(Unit
*u
, const char *dependency_name
, UnitDependencyAtom atom
, JobMode job_mode
);
910 void unit_trigger_notify(Unit
*u
);
912 UnitFileState
unit_get_unit_file_state(Unit
*u
);
913 PresetAction
unit_get_unit_file_preset(Unit
*u
);
915 Unit
* unit_ref_set(UnitRef
*ref
, Unit
*source
, Unit
*target
);
916 void unit_ref_unset(UnitRef
*ref
);
918 #define UNIT_DEREF(ref) ((ref).target)
919 #define UNIT_ISSET(ref) (!!(ref).target)
921 int unit_patch_contexts(Unit
*u
);
923 ExecContext
*unit_get_exec_context(const Unit
*u
) _pure_
;
924 KillContext
*unit_get_kill_context(const Unit
*u
) _pure_
;
925 CGroupContext
*unit_get_cgroup_context(const Unit
*u
) _pure_
;
927 ExecRuntime
*unit_get_exec_runtime(const Unit
*u
) _pure_
;
928 CGroupRuntime
*unit_get_cgroup_runtime(const Unit
*u
) _pure_
;
930 int unit_setup_exec_runtime(Unit
*u
);
931 CGroupRuntime
*unit_setup_cgroup_runtime(Unit
*u
);
933 const char* unit_escape_setting(const char *s
, UnitWriteFlags flags
, char **buf
);
934 char* unit_concat_strv(char **l
, UnitWriteFlags flags
);
936 int unit_write_setting(Unit
*u
, UnitWriteFlags flags
, const char *name
, const char *data
);
937 int unit_write_settingf(Unit
*u
, UnitWriteFlags mode
, const char *name
, const char *format
, ...) _printf_(4,5);
939 int unit_kill_context(Unit
*u
, KillOperation k
);
941 int unit_make_transient(Unit
*u
);
943 int unit_add_mounts_for(Unit
*u
, const char *path
, UnitDependencyMask mask
, UnitMountDependencyType type
);
945 bool unit_type_supported(UnitType t
);
947 bool unit_is_pristine(Unit
*u
);
949 bool unit_is_unneeded(Unit
*u
);
950 bool unit_is_upheld_by_active(Unit
*u
, Unit
**ret_culprit
);
951 bool unit_is_bound_by_inactive(Unit
*u
, Unit
**ret_culprit
);
953 PidRef
* unit_control_pid(Unit
*u
);
954 PidRef
* unit_main_pid_full(Unit
*u
, bool *ret_is_alien
);
955 static inline PidRef
* unit_main_pid(Unit
*u
) {
956 return unit_main_pid_full(u
, NULL
);
959 void unit_warn_if_dir_nonempty(Unit
*u
, const char* where
);
960 int unit_fail_if_noncanonical(Unit
*u
, const char* where
);
962 int unit_test_start_limit(Unit
*u
);
964 int unit_ref_uid_gid(Unit
*u
, uid_t uid
, gid_t gid
);
965 void unit_unref_uid_gid(Unit
*u
, bool destroy_now
);
967 void unit_notify_user_lookup(Unit
*u
, uid_t uid
, gid_t gid
);
969 int unit_set_invocation_id(Unit
*u
, sd_id128_t id
);
970 int unit_acquire_invocation_id(Unit
*u
);
972 int unit_set_exec_params(Unit
*s
, ExecParameters
*p
);
974 int unit_fork_helper_process(Unit
*u
, const char *name
, PidRef
*ret
);
975 int unit_fork_and_watch_rm_rf(Unit
*u
, char **paths
, PidRef
*ret
);
977 void unit_remove_dependencies(Unit
*u
, UnitDependencyMask mask
);
979 void unit_export_state_files(Unit
*u
);
980 void unit_unlink_state_files(Unit
*u
);
982 int unit_prepare_exec(Unit
*u
);
984 int unit_log_leftover_process_start(const PidRef
* pid
, int sig
, void *userdata
);
985 int unit_log_leftover_process_stop(const PidRef
* pid
, int sig
, void *userdata
);
987 int unit_warn_leftover_processes(Unit
*u
, cg_kill_log_func_t log_func
);
989 bool unit_needs_console(Unit
*u
);
991 int unit_pid_attachable(Unit
*unit
, const PidRef
*pid
, sd_bus_error
*error
);
993 static inline bool unit_has_job_type(Unit
*u
, JobType type
) {
994 return u
&& u
->job
&& u
->job
->type
== type
;
997 static inline bool unit_log_level_test(const Unit
*u
, int level
) {
998 ExecContext
*ec
= unit_get_exec_context(u
);
999 return !ec
|| ec
->log_level_max
< 0 || ec
->log_level_max
>= LOG_PRI(level
);
1002 /* unit_log_skip is for cases like ExecCondition= where a unit is considered "done"
1003 * after some execution, rather than succeeded or failed. */
1004 void unit_log_skip(Unit
*u
, const char *result
);
1005 void unit_log_success(Unit
*u
);
1006 void unit_log_failure(Unit
*u
, const char *result
);
1007 static inline void unit_log_result(Unit
*u
, bool success
, const char *result
) {
1009 unit_log_success(u
);
1011 unit_log_failure(u
, result
);
1014 void unit_log_process_exit(Unit
*u
, const char *kind
, const char *command
, bool success
, int code
, int status
);
1016 int unit_exit_status(Unit
*u
);
1017 int unit_success_action_exit_status(Unit
*u
);
1018 int unit_failure_action_exit_status(Unit
*u
);
1020 int unit_test_trigger_loaded(Unit
*u
);
1022 void unit_destroy_runtime_data(Unit
*u
, const ExecContext
*context
);
1023 int unit_clean(Unit
*u
, ExecCleanMask mask
);
1024 int unit_can_clean(Unit
*u
, ExecCleanMask
*ret_mask
);
1026 bool unit_can_start_refuse_manual(Unit
*u
);
1027 bool unit_can_stop_refuse_manual(Unit
*u
);
1028 bool unit_can_isolate_refuse_manual(Unit
*u
);
1030 bool unit_can_freeze(Unit
*u
);
1031 int unit_freezer_action(Unit
*u
, FreezerAction action
);
1032 void unit_next_freezer_state(Unit
*u
, FreezerAction a
, FreezerState
*ret
, FreezerState
*ret_tgt
);
1033 void unit_frozen(Unit
*u
);
1034 void unit_thawed(Unit
*u
);
1036 Condition
*unit_find_failed_condition(Unit
*u
);
1038 int unit_arm_timer(Unit
*u
, sd_event_source
**source
, bool relative
, usec_t usec
, sd_event_time_handler_t handler
);
1040 int unit_compare_priority(Unit
*a
, Unit
*b
);
1042 UnitMountDependencyType
unit_mount_dependency_type_from_string(const char *s
) _const_
;
1043 const char* unit_mount_dependency_type_to_string(UnitMountDependencyType t
) _const_
;
1044 UnitDependency
unit_mount_dependency_type_to_dependency_type(UnitMountDependencyType t
) _pure_
;
1046 /* Macros which append UNIT= or USER_UNIT= to the message */
1048 #define log_unit_full_errno_zerook(unit, level, error, ...) \
1050 const Unit *_u = (unit); \
1051 const int _l = (level); \
1052 bool _do_log = !(log_get_max_level() < LOG_PRI(_l) || \
1053 (_u && !unit_log_level_test(_u, _l))); \
1054 const ExecContext *_c = _do_log && _u ? \
1055 unit_get_exec_context(_u) : NULL; \
1056 LOG_CONTEXT_PUSH_IOV(_c ? _c->log_extra_fields : NULL, \
1057 _c ? _c->n_log_extra_fields : 0); \
1058 !_do_log ? -ERRNO_VALUE(error) : \
1059 _u ? log_object_internal(_l, error, PROJECT_FILE, __LINE__, __func__, _u->manager->unit_log_field, _u->id, _u->manager->invocation_log_field, _u->invocation_id_string, ##__VA_ARGS__) : \
1060 log_internal(_l, error, PROJECT_FILE, __LINE__, __func__, ##__VA_ARGS__); \
1063 #define log_unit_full_errno(unit, level, error, ...) \
1065 int _error = (error); \
1066 ASSERT_NON_ZERO(_error); \
1067 log_unit_full_errno_zerook(unit, level, _error, ##__VA_ARGS__); \
1070 #define log_unit_full(unit, level, ...) (void) log_unit_full_errno_zerook(unit, level, 0, __VA_ARGS__)
1072 #define log_unit_debug(unit, ...) log_unit_full(unit, LOG_DEBUG, __VA_ARGS__)
1073 #define log_unit_info(unit, ...) log_unit_full(unit, LOG_INFO, __VA_ARGS__)
1074 #define log_unit_notice(unit, ...) log_unit_full(unit, LOG_NOTICE, __VA_ARGS__)
1075 #define log_unit_warning(unit, ...) log_unit_full(unit, LOG_WARNING, __VA_ARGS__)
1076 #define log_unit_error(unit, ...) log_unit_full(unit, LOG_ERR, __VA_ARGS__)
1078 #define log_unit_debug_errno(unit, error, ...) log_unit_full_errno(unit, LOG_DEBUG, error, __VA_ARGS__)
1079 #define log_unit_info_errno(unit, error, ...) log_unit_full_errno(unit, LOG_INFO, error, __VA_ARGS__)
1080 #define log_unit_notice_errno(unit, error, ...) log_unit_full_errno(unit, LOG_NOTICE, error, __VA_ARGS__)
1081 #define log_unit_warning_errno(unit, error, ...) log_unit_full_errno(unit, LOG_WARNING, error, __VA_ARGS__)
1082 #define log_unit_error_errno(unit, error, ...) log_unit_full_errno(unit, LOG_ERR, error, __VA_ARGS__)
1085 # define log_unit_trace(...) log_unit_debug(__VA_ARGS__)
1086 # define log_unit_trace_errno(...) log_unit_debug_errno(__VA_ARGS__)
1088 # define log_unit_trace(...) do {} while (0)
1089 # define log_unit_trace_errno(e, ...) (-ERRNO_VALUE(e))
1092 #define log_unit_struct_errno(unit, level, error, ...) \
1094 const Unit *_u = (unit); \
1095 const int _l = (level); \
1096 bool _do_log = unit_log_level_test(_u, _l); \
1097 const ExecContext *_c = _do_log && _u ? \
1098 unit_get_exec_context(_u) : NULL; \
1099 LOG_CONTEXT_PUSH_IOV(_c ? _c->log_extra_fields : NULL, \
1100 _c ? _c->n_log_extra_fields : 0); \
1102 log_struct_errno(_l, error, __VA_ARGS__, LOG_UNIT_ID(_u)) : \
1103 -ERRNO_VALUE(error); \
1106 #define log_unit_struct(unit, level, ...) log_unit_struct_errno(unit, level, 0, __VA_ARGS__)
1108 #define log_unit_struct_iovec_errno(unit, level, error, iovec, n_iovec) \
1110 const Unit *_u = (unit); \
1111 const int _l = (level); \
1112 bool _do_log = unit_log_level_test(_u, _l); \
1113 const ExecContext *_c = _do_log && _u ? \
1114 unit_get_exec_context(_u) : NULL; \
1115 LOG_CONTEXT_PUSH_IOV(_c ? _c->log_extra_fields : NULL, \
1116 _c ? _c->n_log_extra_fields : 0); \
1118 log_struct_iovec_errno(_l, error, iovec, n_iovec) : \
1119 -ERRNO_VALUE(error); \
1122 #define log_unit_struct_iovec(unit, level, iovec, n_iovec) log_unit_struct_iovec_errno(unit, level, 0, iovec, n_iovec)
1124 /* Like LOG_MESSAGE(), but with the unit name prefixed. */
1125 #define LOG_UNIT_MESSAGE(unit, fmt, ...) LOG_MESSAGE("%s: " fmt, (unit)->id, ##__VA_ARGS__)
1126 #define LOG_UNIT_ID(unit) (unit)->manager->unit_log_format_string, (unit)->id
1127 #define LOG_UNIT_INVOCATION_ID(unit) (unit)->manager->invocation_log_format_string, (unit)->invocation_id_string
1129 const char* collect_mode_to_string(CollectMode m
) _const_
;
1130 CollectMode
collect_mode_from_string(const char *s
) _pure_
;
1132 typedef struct UnitForEachDependencyData
{
1133 /* Stores state for the FOREACH macro below for iterating through all deps that have any of the
1134 * specified dependency atom bits set */
1135 UnitDependencyAtom match_atom
;
1136 Hashmap
*by_type
, *by_unit
;
1138 Iterator by_type_iterator
, by_unit_iterator
;
1139 Unit
**current_unit
;
1140 } UnitForEachDependencyData
;
1142 /* Iterates through all dependencies that have a specific atom in the dependency type set. This tries to be
1143 * smart: if the atom is unique, we'll directly go to right entry. Otherwise we'll iterate through the
1144 * per-dependency type hashmap and match all dep that have the right atom set. */
1145 #define _UNIT_FOREACH_DEPENDENCY(other, u, ma, data) \
1146 for (UnitForEachDependencyData data = { \
1147 .match_atom = (ma), \
1148 .by_type = (u)->dependencies, \
1149 .by_type_iterator = ITERATOR_FIRST, \
1150 .current_unit = &(other), \
1153 UnitDependency _dt = _UNIT_DEPENDENCY_INVALID; \
1156 if (data.by_type && ITERATOR_IS_FIRST(data.by_type_iterator)) { \
1157 _dt = unit_dependency_from_unique_atom(data.match_atom); \
1159 data.by_unit = hashmap_get(data.by_type, UNIT_DEPENDENCY_TO_PTR(_dt)); \
1160 data.current_type = UNIT_DEPENDENCY_TO_PTR(_dt); \
1161 data.by_type = NULL; \
1162 _found = !!data.by_unit; \
1166 _found = hashmap_iterate(data.by_type, \
1167 &data.by_type_iterator, \
1168 (void**)&(data.by_unit), \
1169 (const void**) &(data.current_type)); \
1172 if ((unit_dependency_to_atom(UNIT_DEPENDENCY_FROM_PTR(data.current_type)) & data.match_atom) != 0) \
1173 for (data.by_unit_iterator = ITERATOR_FIRST; \
1174 hashmap_iterate(data.by_unit, \
1175 &data.by_unit_iterator, \
1177 (const void**) data.current_unit); )
1179 /* Note: this matches deps that have *any* of the atoms specified in match_atom set */
1180 #define UNIT_FOREACH_DEPENDENCY(other, u, match_atom) \
1181 _UNIT_FOREACH_DEPENDENCY(other, u, match_atom, UNIQ_T(data, UNIQ))
1183 #define _LOG_CONTEXT_PUSH_UNIT(unit, u, c) \
1184 const Unit *u = (unit); \
1185 const ExecContext *c = unit_get_exec_context(u); \
1186 LOG_CONTEXT_PUSH_KEY_VALUE(u->manager->unit_log_field, u->id); \
1187 LOG_CONTEXT_PUSH_KEY_VALUE(u->manager->invocation_log_field, u->invocation_id_string); \
1188 LOG_CONTEXT_PUSH_IOV(c ? c->log_extra_fields : NULL, c ? c->n_log_extra_fields : 0)
1190 #define LOG_CONTEXT_PUSH_UNIT(unit) \
1191 _LOG_CONTEXT_PUSH_UNIT(unit, UNIQ_T(u, UNIQ), UNIQ_T(c, UNIQ))