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03467c88 | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
87f0e418 | 2 | |
c2f1db8f | 3 | #pragma once |
87f0e418 | 4 | |
a7334b09 LP |
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 | |
5430f7f2 LP |
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 | |
a7334b09 LP |
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 | |
5430f7f2 | 18 | Lesser General Public License for more details. |
a7334b09 | 19 | |
5430f7f2 | 20 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
22 | ***/ | |
23 | ||
87f0e418 LP |
24 | #include <stdbool.h> |
25 | #include <stdlib.h> | |
bbc9006e | 26 | #include <unistd.h> |
87f0e418 | 27 | |
ac155bb8 | 28 | typedef struct Unit Unit; |
87f0e418 | 29 | typedef struct UnitVTable UnitVTable; |
87f0e418 LP |
30 | typedef enum UnitActiveState UnitActiveState; |
31 | typedef enum UnitDependency UnitDependency; | |
57020a3a | 32 | typedef struct UnitRef UnitRef; |
c6918296 | 33 | typedef struct UnitStatusMessageFormats UnitStatusMessageFormats; |
87f0e418 | 34 | |
87f0e418 LP |
35 | #include "set.h" |
36 | #include "util.h" | |
37 | #include "list.h" | |
38 | #include "socket-util.h" | |
39 | #include "execute.h" | |
4ad49000 | 40 | #include "cgroup.h" |
52661efd | 41 | #include "condition.h" |
a4375746 | 42 | #include "install.h" |
0a9f8ed0 | 43 | #include "unit-name.h" |
87f0e418 | 44 | |
87f0e418 LP |
45 | enum UnitActiveState { |
46 | UNIT_ACTIVE, | |
032ff4af | 47 | UNIT_RELOADING, |
87f0e418 | 48 | UNIT_INACTIVE, |
fdf20a31 | 49 | UNIT_FAILED, |
87f0e418 LP |
50 | UNIT_ACTIVATING, |
51 | UNIT_DEACTIVATING, | |
94f04347 LP |
52 | _UNIT_ACTIVE_STATE_MAX, |
53 | _UNIT_ACTIVE_STATE_INVALID = -1 | |
87f0e418 LP |
54 | }; |
55 | ||
56 | static inline bool UNIT_IS_ACTIVE_OR_RELOADING(UnitActiveState t) { | |
032ff4af | 57 | return t == UNIT_ACTIVE || t == UNIT_RELOADING; |
87f0e418 LP |
58 | } |
59 | ||
60 | static inline bool UNIT_IS_ACTIVE_OR_ACTIVATING(UnitActiveState t) { | |
032ff4af | 61 | return t == UNIT_ACTIVE || t == UNIT_ACTIVATING || t == UNIT_RELOADING; |
87f0e418 LP |
62 | } |
63 | ||
64 | static inline bool UNIT_IS_INACTIVE_OR_DEACTIVATING(UnitActiveState t) { | |
fdf20a31 | 65 | return t == UNIT_INACTIVE || t == UNIT_FAILED || t == UNIT_DEACTIVATING; |
6124958c LP |
66 | } |
67 | ||
fdf20a31 MM |
68 | static inline bool UNIT_IS_INACTIVE_OR_FAILED(UnitActiveState t) { |
69 | return t == UNIT_INACTIVE || t == UNIT_FAILED; | |
87f0e418 LP |
70 | } |
71 | ||
72 | enum UnitDependency { | |
73 | /* Positive dependencies */ | |
74 | UNIT_REQUIRES, | |
9e2f7c11 | 75 | UNIT_REQUIRES_OVERRIDABLE, |
87f0e418 | 76 | UNIT_REQUISITE, |
9e2f7c11 LP |
77 | UNIT_REQUISITE_OVERRIDABLE, |
78 | UNIT_WANTS, | |
7f2cddae | 79 | UNIT_BINDS_TO, |
85e9a101 | 80 | UNIT_PART_OF, |
87f0e418 LP |
81 | |
82 | /* Inverse of the above */ | |
9e2f7c11 | 83 | UNIT_REQUIRED_BY, /* inverse of 'requires' and 'requisite' is 'required_by' */ |
f14e15f8 | 84 | UNIT_REQUIRED_BY_OVERRIDABLE, /* inverse of 'requires_overridable' and 'requisite_overridable' is 'soft_required_by' */ |
9e2f7c11 | 85 | UNIT_WANTED_BY, /* inverse of 'wants' */ |
7f2cddae | 86 | UNIT_BOUND_BY, /* inverse of 'binds_to' */ |
85e9a101 | 87 | UNIT_CONSISTS_OF, /* inverse of 'part_of' */ |
87f0e418 LP |
88 | |
89 | /* Negative dependencies */ | |
69dd2852 LP |
90 | UNIT_CONFLICTS, /* inverse of 'conflicts' is 'conflicted_by' */ |
91 | UNIT_CONFLICTED_BY, | |
87f0e418 LP |
92 | |
93 | /* Order */ | |
701cc384 | 94 | UNIT_BEFORE, /* inverse of 'before' is 'after' and vice versa */ |
87f0e418 LP |
95 | UNIT_AFTER, |
96 | ||
5de9682c LP |
97 | /* On Failure */ |
98 | UNIT_ON_FAILURE, | |
99 | ||
57020a3a LP |
100 | /* Triggers (i.e. a socket triggers a service) */ |
101 | UNIT_TRIGGERS, | |
102 | UNIT_TRIGGERED_BY, | |
103 | ||
4dcc1cb4 | 104 | /* Propagate reloads */ |
7f2cddae LP |
105 | UNIT_PROPAGATES_RELOAD_TO, |
106 | UNIT_RELOAD_PROPAGATED_FROM, | |
4dcc1cb4 | 107 | |
701cc384 LP |
108 | /* Reference information for GC logic */ |
109 | UNIT_REFERENCES, /* Inverse of 'references' is 'referenced_by' */ | |
110 | UNIT_REFERENCED_BY, | |
111 | ||
87f0e418 LP |
112 | _UNIT_DEPENDENCY_MAX, |
113 | _UNIT_DEPENDENCY_INVALID = -1 | |
114 | }; | |
115 | ||
ef734fd6 LP |
116 | #include "manager.h" |
117 | #include "job.h" | |
118 | ||
a016b922 LP |
119 | struct UnitRef { |
120 | /* Keeps tracks of references to a unit. This is useful so | |
121 | * that we can merge two units if necessary and correct all | |
122 | * references to them */ | |
123 | ||
124 | Unit* unit; | |
125 | LIST_FIELDS(UnitRef, refs); | |
126 | }; | |
127 | ||
ac155bb8 | 128 | struct Unit { |
87f0e418 | 129 | Manager *manager; |
23a177ef | 130 | |
87f0e418 LP |
131 | UnitType type; |
132 | UnitLoadState load_state; | |
23a177ef | 133 | Unit *merged_into; |
87f0e418 LP |
134 | |
135 | char *id; /* One name is special because we use it for identification. Points to an entry in the names set */ | |
9e2f7c11 | 136 | char *instance; |
87f0e418 LP |
137 | |
138 | Set *names; | |
139 | Set *dependencies[_UNIT_DEPENDENCY_MAX]; | |
140 | ||
7c8fa05c LP |
141 | char **requires_mounts_for; |
142 | ||
87f0e418 | 143 | char *description; |
49dbfa7b | 144 | char **documentation; |
faf919f1 | 145 | |
6be1e7d5 | 146 | char *fragment_path; /* if loaded from a config file this is the primary path to it */ |
1b64d026 | 147 | char *source_path; /* if converted, the source file */ |
ae7a7182 | 148 | char **dropin_paths; |
45fb0699 | 149 | usec_t fragment_mtime; |
1b64d026 | 150 | usec_t source_mtime; |
ae7a7182 | 151 | usec_t dropin_mtime; |
87f0e418 | 152 | |
e0209d83 | 153 | /* If there is something to do with this unit, then this is the installed job for it */ |
87f0e418 LP |
154 | Job *job; |
155 | ||
e0209d83 MS |
156 | /* JOB_NOP jobs are special and can be installed without disturbing the real job. */ |
157 | Job *nop_job; | |
158 | ||
faf919f1 LP |
159 | usec_t job_timeout; |
160 | ||
57020a3a LP |
161 | /* References to this */ |
162 | LIST_HEAD(UnitRef, refs); | |
163 | ||
52661efd LP |
164 | /* Conditions to check */ |
165 | LIST_HEAD(Condition, conditions); | |
166 | ||
90bbc946 LP |
167 | dual_timestamp condition_timestamp; |
168 | ||
63983207 LP |
169 | dual_timestamp inactive_exit_timestamp; |
170 | dual_timestamp active_enter_timestamp; | |
171 | dual_timestamp active_exit_timestamp; | |
172 | dual_timestamp inactive_enter_timestamp; | |
87f0e418 | 173 | |
8e274523 | 174 | /* Counterparts in the cgroup filesystem */ |
4ad49000 LP |
175 | char *cgroup_path; |
176 | bool cgroup_realized; | |
177 | CGroupControllerMask cgroup_mask; | |
8e274523 | 178 | |
a016b922 LP |
179 | UnitRef slice; |
180 | ||
ef734fd6 | 181 | /* Per type list */ |
ac155bb8 | 182 | LIST_FIELDS(Unit, units_by_type); |
c1e1601e | 183 | |
7c8fa05c LP |
184 | /* All units which have requires_mounts_for set */ |
185 | LIST_FIELDS(Unit, has_requires_mounts_for); | |
186 | ||
701cc384 | 187 | /* Load queue */ |
ac155bb8 | 188 | LIST_FIELDS(Unit, load_queue); |
701cc384 | 189 | |
c1e1601e | 190 | /* D-Bus queue */ |
ac155bb8 | 191 | LIST_FIELDS(Unit, dbus_queue); |
23a177ef LP |
192 | |
193 | /* Cleanup queue */ | |
ac155bb8 | 194 | LIST_FIELDS(Unit, cleanup_queue); |
9d58f1db | 195 | |
701cc384 | 196 | /* GC queue */ |
ac155bb8 | 197 | LIST_FIELDS(Unit, gc_queue); |
701cc384 | 198 | |
4ad49000 LP |
199 | /* CGroup realize members queue */ |
200 | LIST_FIELDS(Unit, cgroup_queue); | |
201 | ||
701cc384 | 202 | /* Used during GC sweeps */ |
eced69b3 | 203 | unsigned gc_marker; |
701cc384 | 204 | |
7fab9d01 | 205 | /* When deserializing, temporarily store the job type for this |
39a18c60 MS |
206 | * unit here, if there was a job scheduled. |
207 | * Only for deserializing from a legacy version. New style uses full | |
208 | * serialized jobs. */ | |
7fab9d01 LP |
209 | int deserialized_job; /* This is actually of type JobType */ |
210 | ||
8821a00f LP |
211 | /* Error code when we didn't manage to load the unit (negative) */ |
212 | int load_error; | |
213 | ||
a4375746 LP |
214 | /* Cached unit file state */ |
215 | UnitFileState unit_file_state; | |
216 | ||
9d58f1db LP |
217 | /* Garbage collect us we nobody wants or requires us anymore */ |
218 | bool stop_when_unneeded; | |
219 | ||
35b8ca3a | 220 | /* Create default dependencies */ |
a40eb732 LP |
221 | bool default_dependencies; |
222 | ||
b5e9dba8 LP |
223 | /* Refuse manual starting, allow starting only indirectly via dependency. */ |
224 | bool refuse_manual_start; | |
225 | ||
226 | /* Don't allow the user to stop this unit manually, allow stopping only indirectly via dependency. */ | |
227 | bool refuse_manual_stop; | |
228 | ||
2528a7a6 LP |
229 | /* Allow isolation requests */ |
230 | bool allow_isolate; | |
231 | ||
222ae6a8 LP |
232 | /* Isolate OnFailure unit */ |
233 | bool on_failure_isolate; | |
234 | ||
c8f4d764 LP |
235 | /* Ignore this unit when isolating */ |
236 | bool ignore_on_isolate; | |
237 | ||
7a6000a6 LP |
238 | /* Ignore this unit when snapshotting */ |
239 | bool ignore_on_snapshot; | |
240 | ||
49f43d5f | 241 | /* Did the last condition check succeed? */ |
90bbc946 LP |
242 | bool condition_result; |
243 | ||
c2756a68 LP |
244 | /* Is this a transient unit? */ |
245 | bool transient; | |
246 | ||
9d58f1db LP |
247 | bool in_load_queue:1; |
248 | bool in_dbus_queue:1; | |
249 | bool in_cleanup_queue:1; | |
701cc384 | 250 | bool in_gc_queue:1; |
4ad49000 | 251 | bool in_cgroup_queue:1; |
701cc384 | 252 | |
9d58f1db | 253 | bool sent_dbus_new_signal:1; |
6c073082 LP |
254 | |
255 | bool no_gc:1; | |
cd6d0a45 LP |
256 | |
257 | bool in_audit:1; | |
87f0e418 LP |
258 | }; |
259 | ||
c6918296 MS |
260 | struct UnitStatusMessageFormats { |
261 | const char *starting_stopping[2]; | |
262 | const char *finished_start_job[_JOB_RESULT_MAX]; | |
263 | const char *finished_stop_job[_JOB_RESULT_MAX]; | |
264 | }; | |
265 | ||
8e2af478 LP |
266 | typedef enum UnitSetPropertiesMode { |
267 | UNIT_CHECK = 0, | |
268 | UNIT_RUNTIME = 1, | |
269 | UNIT_PERSISTENT = 2, | |
270 | } UnitSetPropertiesMode; | |
271 | ||
87f0e418 LP |
272 | #include "service.h" |
273 | #include "timer.h" | |
274 | #include "socket.h" | |
275 | #include "target.h" | |
276 | #include "device.h" | |
277 | #include "mount.h" | |
278 | #include "automount.h" | |
279 | #include "snapshot.h" | |
07b0b134 | 280 | #include "swap.h" |
01f78473 | 281 | #include "path.h" |
a016b922 | 282 | #include "slice.h" |
87f0e418 | 283 | |
87f0e418 | 284 | struct UnitVTable { |
7d17cfbc MS |
285 | /* How much memory does an object of this unit type need */ |
286 | size_t object_size; | |
287 | ||
3ef63c31 LP |
288 | /* If greater than 0, the offset into the object where |
289 | * ExecContext is found, if the unit type has that */ | |
290 | size_t exec_context_offset; | |
291 | ||
4ad49000 LP |
292 | /* If greater than 0, the offset into the object where |
293 | * CGroupContext is found, if the unit type has that */ | |
294 | size_t cgroup_context_offset; | |
295 | ||
296 | /* The name of the configuration file section with the private settings of this unit*/ | |
297 | const char *private_section; | |
71645aca | 298 | |
f975e971 LP |
299 | /* Config file sections this unit type understands, separated |
300 | * by NUL chars */ | |
301 | const char *sections; | |
302 | ||
e537352b | 303 | /* This should reset all type-specific variables. This should |
a16e1123 LP |
304 | * not allocate memory, and is called with zero-initialized |
305 | * data. It should hence only initialize variables that need | |
306 | * to be set != 0. */ | |
e537352b LP |
307 | void (*init)(Unit *u); |
308 | ||
a16e1123 LP |
309 | /* This should free all type-specific variables. It should be |
310 | * idempotent. */ | |
311 | void (*done)(Unit *u); | |
312 | ||
e537352b LP |
313 | /* Actually load data from disk. This may fail, and should set |
314 | * load_state to UNIT_LOADED, UNIT_MERGED or leave it at | |
315 | * UNIT_STUB if no configuration could be found. */ | |
316 | int (*load)(Unit *u); | |
317 | ||
c5315881 | 318 | /* If a lot of units got created via enumerate(), this is |
e537352b | 319 | * where to actually set the state and call unit_notify(). */ |
f50e0a01 | 320 | int (*coldplug)(Unit *u); |
87f0e418 LP |
321 | |
322 | void (*dump)(Unit *u, FILE *f, const char *prefix); | |
323 | ||
324 | int (*start)(Unit *u); | |
325 | int (*stop)(Unit *u); | |
326 | int (*reload)(Unit *u); | |
327 | ||
c74f17d9 | 328 | int (*kill)(Unit *u, KillWho w, int signo, DBusError *error); |
8a0867d6 | 329 | |
87f0e418 LP |
330 | bool (*can_reload)(Unit *u); |
331 | ||
a16e1123 LP |
332 | /* Write all data that cannot be restored from other sources |
333 | * away using unit_serialize_item() */ | |
334 | int (*serialize)(Unit *u, FILE *f, FDSet *fds); | |
335 | ||
336 | /* Restore one item from the serialization */ | |
337 | int (*deserialize_item)(Unit *u, const char *key, const char *data, FDSet *fds); | |
338 | ||
01e10de3 LP |
339 | /* Try to match up fds with what we need for this unit */ |
340 | int (*distribute_fds)(Unit *u, FDSet *fds); | |
341 | ||
87f0e418 LP |
342 | /* Boils down the more complex internal state of this unit to |
343 | * a simpler one that the engine can understand */ | |
344 | UnitActiveState (*active_state)(Unit *u); | |
345 | ||
10a94420 LP |
346 | /* Returns the substate specific to this unit type as |
347 | * string. This is purely information so that we can give the | |
35b8ca3a | 348 | * user a more fine grained explanation in which actual state a |
10a94420 LP |
349 | * unit is in. */ |
350 | const char* (*sub_state_to_string)(Unit *u); | |
351 | ||
701cc384 LP |
352 | /* Return true when there is reason to keep this entry around |
353 | * even nothing references it and it isn't active in any | |
354 | * way */ | |
355 | bool (*check_gc)(Unit *u); | |
356 | ||
357 | /* Return true when this unit is suitable for snapshotting */ | |
358 | bool (*check_snapshot)(Unit *u); | |
359 | ||
acbb0225 | 360 | void (*fd_event)(Unit *u, int fd, uint32_t events, Watch *w); |
87f0e418 | 361 | void (*sigchld_event)(Unit *u, pid_t pid, int code, int status); |
acbb0225 | 362 | void (*timer_event)(Unit *u, uint64_t n_elapsed, Watch *w); |
7824bbeb | 363 | |
fdf20a31 MM |
364 | /* Reset failed state if we are in failed state */ |
365 | void (*reset_failed)(Unit *u); | |
5632e374 | 366 | |
05e343b7 LP |
367 | /* Called whenever any of the cgroups this unit watches for |
368 | * ran empty */ | |
4ad49000 | 369 | void (*notify_cgroup_empty)(Unit *u); |
8e274523 | 370 | |
8c47c732 | 371 | /* Called whenever a process of this unit sends us a message */ |
c952c6ec | 372 | void (*notify_message)(Unit *u, pid_t pid, char **tags); |
8c47c732 | 373 | |
3ecaa09b | 374 | /* Called whenever a name this Unit registered for comes or |
05e343b7 LP |
375 | * goes away. */ |
376 | void (*bus_name_owner_change)(Unit *u, const char *name, const char *old_owner, const char *new_owner); | |
377 | ||
378 | /* Called whenever a bus PID lookup finishes */ | |
379 | void (*bus_query_pid_done)(Unit *u, const char *name, pid_t pid); | |
380 | ||
4139c1b2 | 381 | /* Called for each message received on the bus */ |
5e8d1c9a | 382 | DBusHandlerResult (*bus_message_handler)(Unit *u, DBusConnection *c, DBusMessage *message); |
4139c1b2 | 383 | |
8e2af478 LP |
384 | /* Called for each property that is being set */ |
385 | int (*bus_set_property)(Unit *u, const char *name, DBusMessageIter *i, UnitSetPropertiesMode mode, DBusError *error); | |
386 | ||
387 | /* Called after at least one property got changed to apply the necessary change */ | |
388 | int (*bus_commit_properties)(Unit *u); | |
389 | ||
a7f241db LP |
390 | /* Return the unit this unit is following */ |
391 | Unit *(*following)(Unit *u); | |
392 | ||
6210e7fc LP |
393 | /* Return the set of units that are following each other */ |
394 | int (*following_set)(Unit *u, Set **s); | |
395 | ||
3ecaa09b LP |
396 | /* Invoked each time a unit this unit is triggering changes |
397 | * state or gains/loses a job */ | |
398 | void (*trigger_notify)(Unit *u, Unit *trigger); | |
399 | ||
8742514c LP |
400 | /* Called whenever CLOCK_REALTIME made a jump */ |
401 | void (*time_change)(Unit *u); | |
402 | ||
f50e0a01 LP |
403 | /* This is called for each unit type and should be used to |
404 | * enumerate existing devices and load them. However, | |
405 | * everything that is loaded here should still stay in | |
406 | * inactive state. It is the job of the coldplug() call above | |
407 | * to put the units into the initial state. */ | |
7824bbeb | 408 | int (*enumerate)(Manager *m); |
f50e0a01 LP |
409 | |
410 | /* Type specific cleanups. */ | |
7824bbeb | 411 | void (*shutdown)(Manager *m); |
9d58f1db | 412 | |
c4e2ceae | 413 | /* When sending out PropertiesChanged signal, which properties |
96d4ce01 | 414 | * shall be invalidated? This is a NUL separated list of |
c4e2ceae LP |
415 | * strings, to minimize relocations a little. */ |
416 | const char *bus_invalidating_properties; | |
417 | ||
418 | /* The interface name */ | |
419 | const char *bus_interface; | |
420 | ||
c6918296 MS |
421 | UnitStatusMessageFormats status_message_formats; |
422 | ||
9d58f1db LP |
423 | /* Can units of this type have multiple names? */ |
424 | bool no_alias:1; | |
425 | ||
9d58f1db LP |
426 | /* Instances make no sense for this type */ |
427 | bool no_instances:1; | |
428 | ||
701cc384 LP |
429 | /* Exclude from automatic gc */ |
430 | bool no_gc:1; | |
c2756a68 LP |
431 | |
432 | /* True if transient units of this type are OK */ | |
433 | bool can_transient:1; | |
87f0e418 LP |
434 | }; |
435 | ||
436 | extern const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX]; | |
437 | ||
ac155bb8 | 438 | #define UNIT_VTABLE(u) unit_vtable[(u)->type] |
87f0e418 LP |
439 | |
440 | /* For casting a unit into the various unit types */ | |
441 | #define DEFINE_CAST(UPPERCASE, MixedCase) \ | |
442 | static inline MixedCase* UPPERCASE(Unit *u) { \ | |
ac155bb8 | 443 | if (_unlikely_(!u || u->type != UNIT_##UPPERCASE)) \ |
87f0e418 LP |
444 | return NULL; \ |
445 | \ | |
446 | return (MixedCase*) u; \ | |
447 | } | |
448 | ||
449 | /* For casting the various unit types into a unit */ | |
ac155bb8 | 450 | #define UNIT(u) (&(u)->meta) |
87f0e418 | 451 | |
3ecaa09b LP |
452 | #define UNIT_TRIGGER(u) ((Unit*) set_first((u)->dependencies[UNIT_TRIGGERS])) |
453 | ||
87f0e418 LP |
454 | DEFINE_CAST(SOCKET, Socket); |
455 | DEFINE_CAST(TIMER, Timer); | |
456 | DEFINE_CAST(SERVICE, Service); | |
457 | DEFINE_CAST(TARGET, Target); | |
458 | DEFINE_CAST(DEVICE, Device); | |
459 | DEFINE_CAST(MOUNT, Mount); | |
460 | DEFINE_CAST(AUTOMOUNT, Automount); | |
461 | DEFINE_CAST(SNAPSHOT, Snapshot); | |
07b0b134 | 462 | DEFINE_CAST(SWAP, Swap); |
01f78473 | 463 | DEFINE_CAST(PATH, Path); |
a016b922 | 464 | DEFINE_CAST(SLICE, Slice); |
87f0e418 | 465 | |
7d17cfbc | 466 | Unit *unit_new(Manager *m, size_t size); |
87f0e418 LP |
467 | void unit_free(Unit *u); |
468 | ||
469 | int unit_add_name(Unit *u, const char *name); | |
9e2f7c11 | 470 | |
701cc384 | 471 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference); |
2c966c03 LP |
472 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference); |
473 | ||
701cc384 | 474 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *filename, bool add_reference); |
2c966c03 LP |
475 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference); |
476 | ||
701cc384 | 477 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *filename, bool add_reference); |
2c966c03 | 478 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference); |
0ae97ec1 | 479 | |
23a177ef LP |
480 | int unit_add_exec_dependencies(Unit *u, ExecContext *c); |
481 | ||
0ae97ec1 | 482 | int unit_choose_id(Unit *u, const char *name); |
f50e0a01 | 483 | int unit_set_description(Unit *u, const char *description); |
87f0e418 | 484 | |
701cc384 LP |
485 | bool unit_check_gc(Unit *u); |
486 | ||
87f0e418 | 487 | void unit_add_to_load_queue(Unit *u); |
c1e1601e | 488 | void unit_add_to_dbus_queue(Unit *u); |
23a177ef | 489 | void unit_add_to_cleanup_queue(Unit *u); |
701cc384 | 490 | void unit_add_to_gc_queue(Unit *u); |
87f0e418 LP |
491 | |
492 | int unit_merge(Unit *u, Unit *other); | |
23a177ef LP |
493 | int unit_merge_by_name(Unit *u, const char *other); |
494 | ||
44a6b1b6 | 495 | Unit *unit_follow_merge(Unit *u) _pure_; |
87f0e418 | 496 | |
e537352b LP |
497 | int unit_load_fragment_and_dropin(Unit *u); |
498 | int unit_load_fragment_and_dropin_optional(Unit *u); | |
87f0e418 LP |
499 | int unit_load(Unit *unit); |
500 | ||
a016b922 LP |
501 | int unit_add_default_slice(Unit *u); |
502 | ||
44a6b1b6 | 503 | const char *unit_description(Unit *u) _pure_; |
87f0e418 | 504 | |
f278026d LP |
505 | bool unit_has_name(Unit *u, const char *name); |
506 | ||
87f0e418 LP |
507 | UnitActiveState unit_active_state(Unit *u); |
508 | ||
10a94420 LP |
509 | const char* unit_sub_state_to_string(Unit *u); |
510 | ||
87f0e418 LP |
511 | void unit_dump(Unit *u, FILE *f, const char *prefix); |
512 | ||
44a6b1b6 ZJS |
513 | bool unit_can_reload(Unit *u) _pure_; |
514 | bool unit_can_start(Unit *u) _pure_; | |
515 | bool unit_can_isolate(Unit *u) _pure_; | |
87f0e418 LP |
516 | |
517 | int unit_start(Unit *u); | |
518 | int unit_stop(Unit *u); | |
519 | int unit_reload(Unit *u); | |
520 | ||
c74f17d9 | 521 | int unit_kill(Unit *u, KillWho w, int signo, DBusError *error); |
814cc562 | 522 | int unit_kill_common(Unit *u, KillWho who, int signo, pid_t main_pid, pid_t control_pid, DBusError *error); |
8a0867d6 | 523 | |
e2f3b44c | 524 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success); |
87f0e418 | 525 | |
acbb0225 LP |
526 | int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w); |
527 | void unit_unwatch_fd(Unit *u, Watch *w); | |
87f0e418 LP |
528 | |
529 | int unit_watch_pid(Unit *u, pid_t pid); | |
530 | void unit_unwatch_pid(Unit *u, pid_t pid); | |
531 | ||
36697dc0 | 532 | int unit_watch_timer(Unit *u, clockid_t, bool relative, usec_t usec, Watch *w); |
acbb0225 | 533 | void unit_unwatch_timer(Unit *u, Watch *w); |
87f0e418 | 534 | |
05e343b7 LP |
535 | int unit_watch_bus_name(Unit *u, const char *name); |
536 | void unit_unwatch_bus_name(Unit *u, const char *name); | |
537 | ||
87f0e418 LP |
538 | bool unit_job_is_applicable(Unit *u, JobType j); |
539 | ||
0301abf4 LP |
540 | int set_unit_path(const char *p); |
541 | ||
50159e6a LP |
542 | char *unit_dbus_path(Unit *u); |
543 | ||
f6ff8c29 | 544 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found); |
a16e1123 | 545 | int unit_get_related_unit(Unit *u, const char *type, Unit **_found); |
f6ff8c29 | 546 | |
44a6b1b6 | 547 | bool unit_can_serialize(Unit *u) _pure_; |
6b78f9b4 | 548 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs); |
93a46b0b | 549 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *value, ...) _printf_attr_(4,5); |
a16e1123 LP |
550 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value); |
551 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds); | |
552 | ||
6e2ef85b LP |
553 | int unit_add_node_link(Unit *u, const char *what, bool wants); |
554 | ||
cca098b0 LP |
555 | int unit_coldplug(Unit *u); |
556 | ||
b1e2b33c | 557 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) _printf_attr_(3, 0); |
9e58ff9c | 558 | |
45fb0699 LP |
559 | bool unit_need_daemon_reload(Unit *u); |
560 | ||
fdf20a31 | 561 | void unit_reset_failed(Unit *u); |
5632e374 | 562 | |
a7f241db LP |
563 | Unit *unit_following(Unit *u); |
564 | ||
9444b1f2 LP |
565 | const char *unit_slice_name(Unit *u); |
566 | ||
44a6b1b6 ZJS |
567 | bool unit_stop_pending(Unit *u) _pure_; |
568 | bool unit_inactive_or_pending(Unit *u) _pure_; | |
31afa0a4 | 569 | bool unit_active_or_pending(Unit *u); |
18ffdfda | 570 | |
bba34eed LP |
571 | int unit_add_default_target_dependency(Unit *u, Unit *target); |
572 | ||
41f9172f LP |
573 | char *unit_default_cgroup_path(Unit *u); |
574 | ||
6210e7fc LP |
575 | int unit_following_set(Unit *u, Set **s); |
576 | ||
3ecaa09b LP |
577 | void unit_start_on_failure(Unit *u); |
578 | void unit_trigger_notify(Unit *u); | |
c0daa706 | 579 | |
90bbc946 LP |
580 | bool unit_condition_test(Unit *u); |
581 | ||
a4375746 LP |
582 | UnitFileState unit_get_unit_file_state(Unit *u); |
583 | ||
57020a3a LP |
584 | Unit* unit_ref_set(UnitRef *ref, Unit *u); |
585 | void unit_ref_unset(UnitRef *ref); | |
586 | ||
587 | #define UNIT_DEREF(ref) ((ref).unit) | |
9444b1f2 | 588 | #define UNIT_ISSET(ref) (!!(ref).unit) |
57020a3a | 589 | |
7c8fa05c LP |
590 | int unit_add_one_mount_link(Unit *u, Mount *m); |
591 | int unit_add_mount_links(Unit *u); | |
592 | ||
cba6e062 | 593 | int unit_exec_context_defaults(Unit *u, ExecContext *c); |
e06c73cc | 594 | |
44a6b1b6 | 595 | ExecContext *unit_get_exec_context(Unit *u) _pure_; |
4ad49000 | 596 | CGroupContext *unit_get_cgroup_context(Unit *u) _pure_; |
3ef63c31 | 597 | |
8e2af478 | 598 | int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data); |
b42defe3 | 599 | int unit_write_drop_in_private_section(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data); |
8e2af478 | 600 | int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name); |
71645aca | 601 | |
cd2086fe LP |
602 | int unit_kill_context(Unit *u, KillContext *c, bool sigkill, pid_t main_pid, pid_t control_pid, bool main_pid_alien); |
603 | ||
c2756a68 LP |
604 | int unit_make_transient(Unit *u); |
605 | ||
44a6b1b6 ZJS |
606 | const char *unit_active_state_to_string(UnitActiveState i) _const_; |
607 | UnitActiveState unit_active_state_from_string(const char *s) _pure_; | |
94f04347 | 608 | |
44a6b1b6 ZJS |
609 | const char *unit_dependency_to_string(UnitDependency i) _const_; |
610 | UnitDependency unit_dependency_from_string(const char *s) _pure_; | |
fdf9f9bb | 611 | |
e8e581bf ZJS |
612 | /* Macros which append UNIT= or USER_UNIT= to the message */ |
613 | ||
bbc9006e | 614 | #define log_full_unit(level, unit, ...) log_meta_object(level, __FILE__, __LINE__, __func__, getpid() == 1 ? "UNIT=" : "USER_UNIT=", unit, __VA_ARGS__) |
fdf9f9bb ZJS |
615 | #define log_debug_unit(unit, ...) log_full_unit(LOG_DEBUG, unit, __VA_ARGS__) |
616 | #define log_info_unit(unit, ...) log_full_unit(LOG_INFO, unit, __VA_ARGS__) | |
617 | #define log_notice_unit(unit, ...) log_full_unit(LOG_NOTICE, unit, __VA_ARGS__) | |
618 | #define log_warning_unit(unit, ...) log_full_unit(LOG_WARNING, unit, __VA_ARGS__) | |
619 | #define log_error_unit(unit, ...) log_full_unit(LOG_ERR, unit, __VA_ARGS__) | |
bbc9006e MT |
620 | |
621 | #define log_struct_unit(level, unit, ...) log_struct(level, getpid() == 1 ? "UNIT=%s" : "USER_UNIT=%s", unit, __VA_ARGS__) |