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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; |
57020a3a | 30 | typedef struct UnitRef UnitRef; |
c6918296 | 31 | typedef struct UnitStatusMessageFormats UnitStatusMessageFormats; |
87f0e418 | 32 | |
87f0e418 | 33 | #include "list.h" |
134e56dc | 34 | #include "condition.h" |
a4375746 | 35 | #include "install.h" |
0a9f8ed0 | 36 | #include "unit-name.h" |
f189ab18 | 37 | #include "failure-action.h" |
87f0e418 | 38 | |
db2cb23b UTL |
39 | typedef enum KillOperation { |
40 | KILL_TERMINATE, | |
41 | KILL_KILL, | |
42 | KILL_ABORT, | |
4940c0b0 LP |
43 | _KILL_OPERATION_MAX, |
44 | _KILL_OPERATION_INVALID = -1 | |
db2cb23b UTL |
45 | } KillOperation; |
46 | ||
87f0e418 | 47 | static inline bool UNIT_IS_ACTIVE_OR_RELOADING(UnitActiveState t) { |
032ff4af | 48 | return t == UNIT_ACTIVE || t == UNIT_RELOADING; |
87f0e418 LP |
49 | } |
50 | ||
51 | static inline bool UNIT_IS_ACTIVE_OR_ACTIVATING(UnitActiveState t) { | |
032ff4af | 52 | return t == UNIT_ACTIVE || t == UNIT_ACTIVATING || t == UNIT_RELOADING; |
87f0e418 LP |
53 | } |
54 | ||
55 | static inline bool UNIT_IS_INACTIVE_OR_DEACTIVATING(UnitActiveState t) { | |
fdf20a31 | 56 | return t == UNIT_INACTIVE || t == UNIT_FAILED || t == UNIT_DEACTIVATING; |
6124958c LP |
57 | } |
58 | ||
fdf20a31 MM |
59 | static inline bool UNIT_IS_INACTIVE_OR_FAILED(UnitActiveState t) { |
60 | return t == UNIT_INACTIVE || t == UNIT_FAILED; | |
87f0e418 LP |
61 | } |
62 | ||
ef734fd6 LP |
63 | #include "job.h" |
64 | ||
a016b922 LP |
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 | ||
ac155bb8 | 74 | struct Unit { |
87f0e418 | 75 | Manager *manager; |
23a177ef | 76 | |
87f0e418 LP |
77 | UnitType type; |
78 | UnitLoadState load_state; | |
23a177ef | 79 | Unit *merged_into; |
87f0e418 LP |
80 | |
81 | char *id; /* One name is special because we use it for identification. Points to an entry in the names set */ | |
9e2f7c11 | 82 | char *instance; |
87f0e418 LP |
83 | |
84 | Set *names; | |
85 | Set *dependencies[_UNIT_DEPENDENCY_MAX]; | |
86 | ||
7c8fa05c LP |
87 | char **requires_mounts_for; |
88 | ||
87f0e418 | 89 | char *description; |
49dbfa7b | 90 | char **documentation; |
faf919f1 | 91 | |
6be1e7d5 | 92 | char *fragment_path; /* if loaded from a config file this is the primary path to it */ |
1b64d026 | 93 | char *source_path; /* if converted, the source file */ |
ae7a7182 | 94 | char **dropin_paths; |
f78f265f | 95 | |
45fb0699 | 96 | usec_t fragment_mtime; |
1b64d026 | 97 | usec_t source_mtime; |
ae7a7182 | 98 | usec_t dropin_mtime; |
87f0e418 | 99 | |
e0209d83 | 100 | /* If there is something to do with this unit, then this is the installed job for it */ |
87f0e418 LP |
101 | Job *job; |
102 | ||
e0209d83 MS |
103 | /* JOB_NOP jobs are special and can be installed without disturbing the real job. */ |
104 | Job *nop_job; | |
105 | ||
bbc29086 DM |
106 | /* The slot used for watching NameOwnerChanged signals */ |
107 | sd_bus_slot *match_bus_slot; | |
108 | ||
f189ab18 | 109 | /* Job timeout and action to take */ |
faf919f1 | 110 | usec_t job_timeout; |
f189ab18 LP |
111 | FailureAction job_timeout_action; |
112 | char *job_timeout_reboot_arg; | |
faf919f1 | 113 | |
57020a3a LP |
114 | /* References to this */ |
115 | LIST_HEAD(UnitRef, refs); | |
116 | ||
52661efd LP |
117 | /* Conditions to check */ |
118 | LIST_HEAD(Condition, conditions); | |
59fccdc5 | 119 | LIST_HEAD(Condition, asserts); |
52661efd | 120 | |
90bbc946 | 121 | dual_timestamp condition_timestamp; |
59fccdc5 | 122 | dual_timestamp assert_timestamp; |
90bbc946 | 123 | |
63983207 LP |
124 | dual_timestamp inactive_exit_timestamp; |
125 | dual_timestamp active_enter_timestamp; | |
126 | dual_timestamp active_exit_timestamp; | |
127 | dual_timestamp inactive_enter_timestamp; | |
87f0e418 | 128 | |
a016b922 LP |
129 | UnitRef slice; |
130 | ||
ef734fd6 | 131 | /* Per type list */ |
ac155bb8 | 132 | LIST_FIELDS(Unit, units_by_type); |
c1e1601e | 133 | |
7c8fa05c LP |
134 | /* All units which have requires_mounts_for set */ |
135 | LIST_FIELDS(Unit, has_requires_mounts_for); | |
136 | ||
701cc384 | 137 | /* Load queue */ |
ac155bb8 | 138 | LIST_FIELDS(Unit, load_queue); |
701cc384 | 139 | |
c1e1601e | 140 | /* D-Bus queue */ |
ac155bb8 | 141 | LIST_FIELDS(Unit, dbus_queue); |
23a177ef LP |
142 | |
143 | /* Cleanup queue */ | |
ac155bb8 | 144 | LIST_FIELDS(Unit, cleanup_queue); |
9d58f1db | 145 | |
701cc384 | 146 | /* GC queue */ |
ac155bb8 | 147 | LIST_FIELDS(Unit, gc_queue); |
701cc384 | 148 | |
4ad49000 LP |
149 | /* CGroup realize members queue */ |
150 | LIST_FIELDS(Unit, cgroup_queue); | |
151 | ||
32ee7d33 DM |
152 | /* Units with the same CGroup netclass */ |
153 | LIST_FIELDS(Unit, cgroup_netclass); | |
154 | ||
a911bb9a LP |
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 | ||
701cc384 | 160 | /* Used during GC sweeps */ |
eced69b3 | 161 | unsigned gc_marker; |
701cc384 | 162 | |
8821a00f LP |
163 | /* Error code when we didn't manage to load the unit (negative) */ |
164 | int load_error; | |
165 | ||
67bfdc97 LP |
166 | /* Make sure we never enter endless loops with the check unneeded logic, or the BindsTo= logic */ |
167 | RateLimit auto_stop_ratelimit; | |
bea355da | 168 | |
d2dc52db | 169 | /* Cached unit file state and preset */ |
a4375746 | 170 | UnitFileState unit_file_state; |
d2dc52db | 171 | int unit_file_preset; |
a4375746 | 172 | |
5ad096b3 LP |
173 | /* Where the cpuacct.usage cgroup counter was at the time the unit was started */ |
174 | nsec_t cpuacct_usage_base; | |
175 | ||
7c52a17b ZJS |
176 | /* Counterparts in the cgroup filesystem */ |
177 | char *cgroup_path; | |
efdb0237 LP |
178 | CGroupMask cgroup_realized_mask; |
179 | CGroupMask cgroup_subtree_mask; | |
180 | CGroupMask cgroup_members_mask; | |
181 | int cgroup_inotify_wd; | |
7c52a17b | 182 | |
32ee7d33 DM |
183 | uint32_t cgroup_netclass_id; |
184 | ||
7c52a17b ZJS |
185 | /* How to start OnFailure units */ |
186 | JobMode on_failure_job_mode; | |
187 | ||
9d58f1db LP |
188 | /* Garbage collect us we nobody wants or requires us anymore */ |
189 | bool stop_when_unneeded; | |
190 | ||
35b8ca3a | 191 | /* Create default dependencies */ |
a40eb732 LP |
192 | bool default_dependencies; |
193 | ||
b5e9dba8 LP |
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 | ||
2528a7a6 LP |
200 | /* Allow isolation requests */ |
201 | bool allow_isolate; | |
202 | ||
c8f4d764 LP |
203 | /* Ignore this unit when isolating */ |
204 | bool ignore_on_isolate; | |
205 | ||
7a6000a6 LP |
206 | /* Ignore this unit when snapshotting */ |
207 | bool ignore_on_snapshot; | |
208 | ||
49f43d5f | 209 | /* Did the last condition check succeed? */ |
90bbc946 | 210 | bool condition_result; |
59fccdc5 | 211 | bool assert_result; |
90bbc946 | 212 | |
c2756a68 LP |
213 | /* Is this a transient unit? */ |
214 | bool transient; | |
215 | ||
9d58f1db LP |
216 | bool in_load_queue:1; |
217 | bool in_dbus_queue:1; | |
218 | bool in_cleanup_queue:1; | |
701cc384 | 219 | bool in_gc_queue:1; |
4ad49000 | 220 | bool in_cgroup_queue:1; |
701cc384 | 221 | |
9d58f1db | 222 | bool sent_dbus_new_signal:1; |
6c073082 LP |
223 | |
224 | bool no_gc:1; | |
cd6d0a45 LP |
225 | |
226 | bool in_audit:1; | |
a57f7e2c LP |
227 | |
228 | bool cgroup_realized:1; | |
bc432dc7 LP |
229 | bool cgroup_members_mask_valid:1; |
230 | bool cgroup_subtree_mask_valid:1; | |
f78f265f LP |
231 | |
232 | /* Did we already invoke unit_coldplug() for this unit? */ | |
f8a30ce5 | 233 | bool coldplugged:1; |
87f0e418 LP |
234 | }; |
235 | ||
c6918296 MS |
236 | struct UnitStatusMessageFormats { |
237 | const char *starting_stopping[2]; | |
238 | const char *finished_start_job[_JOB_RESULT_MAX]; | |
239 | const char *finished_stop_job[_JOB_RESULT_MAX]; | |
240 | }; | |
241 | ||
8e2af478 LP |
242 | typedef enum UnitSetPropertiesMode { |
243 | UNIT_CHECK = 0, | |
244 | UNIT_RUNTIME = 1, | |
245 | UNIT_PERSISTENT = 2, | |
246 | } UnitSetPropertiesMode; | |
247 | ||
87f0e418 | 248 | #include "socket.h" |
e821075a | 249 | #include "busname.h" |
87f0e418 | 250 | #include "target.h" |
e821075a | 251 | #include "snapshot.h" |
87f0e418 | 252 | #include "device.h" |
87f0e418 | 253 | #include "automount.h" |
07b0b134 | 254 | #include "swap.h" |
e821075a | 255 | #include "timer.h" |
a016b922 | 256 | #include "slice.h" |
c1ff5570 | 257 | #include "path.h" |
6c12b52e | 258 | #include "scope.h" |
87f0e418 | 259 | |
87f0e418 | 260 | struct UnitVTable { |
7d17cfbc MS |
261 | /* How much memory does an object of this unit type need */ |
262 | size_t object_size; | |
263 | ||
3ef63c31 LP |
264 | /* If greater than 0, the offset into the object where |
265 | * ExecContext is found, if the unit type has that */ | |
266 | size_t exec_context_offset; | |
267 | ||
4ad49000 LP |
268 | /* If greater than 0, the offset into the object where |
269 | * CGroupContext is found, if the unit type has that */ | |
270 | size_t cgroup_context_offset; | |
271 | ||
718db961 LP |
272 | /* If greater than 0, the offset into the object where |
273 | * KillContext is found, if the unit type has that */ | |
274 | size_t kill_context_offset; | |
275 | ||
613b411c LP |
276 | /* If greater than 0, the offset into the object where the |
277 | * pointer to ExecRuntime is found, if the unit type has | |
278 | * that */ | |
279 | size_t exec_runtime_offset; | |
280 | ||
ee33e53a | 281 | /* The name of the configuration file section with the private settings of this unit */ |
4ad49000 | 282 | const char *private_section; |
71645aca | 283 | |
f975e971 LP |
284 | /* Config file sections this unit type understands, separated |
285 | * by NUL chars */ | |
286 | const char *sections; | |
287 | ||
e537352b | 288 | /* This should reset all type-specific variables. This should |
a16e1123 LP |
289 | * not allocate memory, and is called with zero-initialized |
290 | * data. It should hence only initialize variables that need | |
291 | * to be set != 0. */ | |
e537352b LP |
292 | void (*init)(Unit *u); |
293 | ||
a16e1123 LP |
294 | /* This should free all type-specific variables. It should be |
295 | * idempotent. */ | |
296 | void (*done)(Unit *u); | |
297 | ||
e537352b LP |
298 | /* Actually load data from disk. This may fail, and should set |
299 | * load_state to UNIT_LOADED, UNIT_MERGED or leave it at | |
300 | * UNIT_STUB if no configuration could be found. */ | |
301 | int (*load)(Unit *u); | |
302 | ||
c5315881 | 303 | /* If a lot of units got created via enumerate(), this is |
be847e82 LP |
304 | * where to actually set the state and call unit_notify(). */ |
305 | int (*coldplug)(Unit *u); | |
87f0e418 LP |
306 | |
307 | void (*dump)(Unit *u, FILE *f, const char *prefix); | |
308 | ||
309 | int (*start)(Unit *u); | |
310 | int (*stop)(Unit *u); | |
311 | int (*reload)(Unit *u); | |
312 | ||
718db961 | 313 | int (*kill)(Unit *u, KillWho w, int signo, sd_bus_error *error); |
8a0867d6 | 314 | |
87f0e418 LP |
315 | bool (*can_reload)(Unit *u); |
316 | ||
a16e1123 LP |
317 | /* Write all data that cannot be restored from other sources |
318 | * away using unit_serialize_item() */ | |
319 | int (*serialize)(Unit *u, FILE *f, FDSet *fds); | |
320 | ||
321 | /* Restore one item from the serialization */ | |
322 | int (*deserialize_item)(Unit *u, const char *key, const char *data, FDSet *fds); | |
323 | ||
01e10de3 LP |
324 | /* Try to match up fds with what we need for this unit */ |
325 | int (*distribute_fds)(Unit *u, FDSet *fds); | |
326 | ||
87f0e418 LP |
327 | /* Boils down the more complex internal state of this unit to |
328 | * a simpler one that the engine can understand */ | |
329 | UnitActiveState (*active_state)(Unit *u); | |
330 | ||
10a94420 LP |
331 | /* Returns the substate specific to this unit type as |
332 | * string. This is purely information so that we can give the | |
35b8ca3a | 333 | * user a more fine grained explanation in which actual state a |
10a94420 LP |
334 | * unit is in. */ |
335 | const char* (*sub_state_to_string)(Unit *u); | |
336 | ||
701cc384 LP |
337 | /* Return true when there is reason to keep this entry around |
338 | * even nothing references it and it isn't active in any | |
339 | * way */ | |
340 | bool (*check_gc)(Unit *u); | |
341 | ||
a354329f LP |
342 | /* When the unit is not running and no job for it queued we |
343 | * shall release its runtime resources */ | |
344 | void (*release_resources)(Unit *u); | |
345 | ||
701cc384 LP |
346 | /* Return true when this unit is suitable for snapshotting */ |
347 | bool (*check_snapshot)(Unit *u); | |
348 | ||
718db961 | 349 | /* Invoked on every child that died */ |
87f0e418 | 350 | void (*sigchld_event)(Unit *u, pid_t pid, int code, int status); |
7824bbeb | 351 | |
fdf20a31 MM |
352 | /* Reset failed state if we are in failed state */ |
353 | void (*reset_failed)(Unit *u); | |
5632e374 | 354 | |
05e343b7 LP |
355 | /* Called whenever any of the cgroups this unit watches for |
356 | * ran empty */ | |
4ad49000 | 357 | void (*notify_cgroup_empty)(Unit *u); |
8e274523 | 358 | |
8c47c732 | 359 | /* Called whenever a process of this unit sends us a message */ |
a354329f | 360 | void (*notify_message)(Unit *u, pid_t pid, char **tags, FDSet *fds); |
8c47c732 | 361 | |
3ecaa09b | 362 | /* Called whenever a name this Unit registered for comes or |
05e343b7 LP |
363 | * goes away. */ |
364 | void (*bus_name_owner_change)(Unit *u, const char *name, const char *old_owner, const char *new_owner); | |
365 | ||
8e2af478 | 366 | /* Called for each property that is being set */ |
718db961 | 367 | int (*bus_set_property)(Unit *u, const char *name, sd_bus_message *message, UnitSetPropertiesMode mode, sd_bus_error *error); |
8e2af478 LP |
368 | |
369 | /* Called after at least one property got changed to apply the necessary change */ | |
370 | int (*bus_commit_properties)(Unit *u); | |
371 | ||
a7f241db LP |
372 | /* Return the unit this unit is following */ |
373 | Unit *(*following)(Unit *u); | |
374 | ||
6210e7fc LP |
375 | /* Return the set of units that are following each other */ |
376 | int (*following_set)(Unit *u, Set **s); | |
377 | ||
3ecaa09b LP |
378 | /* Invoked each time a unit this unit is triggering changes |
379 | * state or gains/loses a job */ | |
380 | void (*trigger_notify)(Unit *u, Unit *trigger); | |
381 | ||
8742514c LP |
382 | /* Called whenever CLOCK_REALTIME made a jump */ |
383 | void (*time_change)(Unit *u); | |
384 | ||
68db7a3b ZJS |
385 | int (*get_timeout)(Unit *u, uint64_t *timeout); |
386 | ||
f50e0a01 LP |
387 | /* This is called for each unit type and should be used to |
388 | * enumerate existing devices and load them. However, | |
389 | * everything that is loaded here should still stay in | |
390 | * inactive state. It is the job of the coldplug() call above | |
391 | * to put the units into the initial state. */ | |
7824bbeb | 392 | int (*enumerate)(Manager *m); |
f50e0a01 LP |
393 | |
394 | /* Type specific cleanups. */ | |
7824bbeb | 395 | void (*shutdown)(Manager *m); |
9d58f1db | 396 | |
0faacd47 LP |
397 | /* If this function is set and return false all jobs for units |
398 | * of this type will immediately fail. */ | |
1c2e9646 | 399 | bool (*supported)(void); |
0faacd47 | 400 | |
718db961 LP |
401 | /* The bus vtable */ |
402 | const sd_bus_vtable *bus_vtable; | |
403 | ||
718db961 | 404 | /* The strings to print in status messages */ |
c6918296 MS |
405 | UnitStatusMessageFormats status_message_formats; |
406 | ||
9d58f1db LP |
407 | /* Can units of this type have multiple names? */ |
408 | bool no_alias:1; | |
409 | ||
9d58f1db LP |
410 | /* Instances make no sense for this type */ |
411 | bool no_instances:1; | |
412 | ||
701cc384 LP |
413 | /* Exclude from automatic gc */ |
414 | bool no_gc:1; | |
c2756a68 LP |
415 | |
416 | /* True if transient units of this type are OK */ | |
417 | bool can_transient:1; | |
87f0e418 LP |
418 | }; |
419 | ||
420 | extern const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX]; | |
421 | ||
ac155bb8 | 422 | #define UNIT_VTABLE(u) unit_vtable[(u)->type] |
87f0e418 LP |
423 | |
424 | /* For casting a unit into the various unit types */ | |
425 | #define DEFINE_CAST(UPPERCASE, MixedCase) \ | |
426 | static inline MixedCase* UPPERCASE(Unit *u) { \ | |
ac155bb8 | 427 | if (_unlikely_(!u || u->type != UNIT_##UPPERCASE)) \ |
87f0e418 LP |
428 | return NULL; \ |
429 | \ | |
430 | return (MixedCase*) u; \ | |
431 | } | |
432 | ||
433 | /* For casting the various unit types into a unit */ | |
ac155bb8 | 434 | #define UNIT(u) (&(u)->meta) |
87f0e418 | 435 | |
35b7ff80 LP |
436 | #define UNIT_HAS_EXEC_CONTEXT(u) (UNIT_VTABLE(u)->exec_context_offset > 0) |
437 | #define UNIT_HAS_CGROUP_CONTEXT(u) (UNIT_VTABLE(u)->cgroup_context_offset > 0) | |
438 | #define UNIT_HAS_KILL_CONTEXT(u) (UNIT_VTABLE(u)->kill_context_offset > 0) | |
439 | ||
3ecaa09b LP |
440 | #define UNIT_TRIGGER(u) ((Unit*) set_first((u)->dependencies[UNIT_TRIGGERS])) |
441 | ||
87f0e418 | 442 | DEFINE_CAST(SERVICE, Service); |
e821075a LP |
443 | DEFINE_CAST(SOCKET, Socket); |
444 | DEFINE_CAST(BUSNAME, BusName); | |
87f0e418 | 445 | DEFINE_CAST(TARGET, Target); |
e821075a | 446 | DEFINE_CAST(SNAPSHOT, Snapshot); |
87f0e418 LP |
447 | DEFINE_CAST(DEVICE, Device); |
448 | DEFINE_CAST(MOUNT, Mount); | |
449 | DEFINE_CAST(AUTOMOUNT, Automount); | |
07b0b134 | 450 | DEFINE_CAST(SWAP, Swap); |
e821075a | 451 | DEFINE_CAST(TIMER, Timer); |
01f78473 | 452 | DEFINE_CAST(PATH, Path); |
a016b922 | 453 | DEFINE_CAST(SLICE, Slice); |
6c12b52e | 454 | DEFINE_CAST(SCOPE, Scope); |
87f0e418 | 455 | |
7d17cfbc | 456 | Unit *unit_new(Manager *m, size_t size); |
87f0e418 LP |
457 | void unit_free(Unit *u); |
458 | ||
459 | int unit_add_name(Unit *u, const char *name); | |
9e2f7c11 | 460 | |
701cc384 | 461 | int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference); |
2c966c03 LP |
462 | int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference); |
463 | ||
701cc384 | 464 | int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *filename, bool add_reference); |
2c966c03 LP |
465 | int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference); |
466 | ||
701cc384 | 467 | int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *filename, bool add_reference); |
2c966c03 | 468 | int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference); |
0ae97ec1 | 469 | |
23a177ef LP |
470 | int unit_add_exec_dependencies(Unit *u, ExecContext *c); |
471 | ||
0ae97ec1 | 472 | int unit_choose_id(Unit *u, const char *name); |
f50e0a01 | 473 | int unit_set_description(Unit *u, const char *description); |
87f0e418 | 474 | |
701cc384 LP |
475 | bool unit_check_gc(Unit *u); |
476 | ||
87f0e418 | 477 | void unit_add_to_load_queue(Unit *u); |
c1e1601e | 478 | void unit_add_to_dbus_queue(Unit *u); |
23a177ef | 479 | void unit_add_to_cleanup_queue(Unit *u); |
701cc384 | 480 | void unit_add_to_gc_queue(Unit *u); |
87f0e418 LP |
481 | |
482 | int unit_merge(Unit *u, Unit *other); | |
23a177ef LP |
483 | int unit_merge_by_name(Unit *u, const char *other); |
484 | ||
44a6b1b6 | 485 | Unit *unit_follow_merge(Unit *u) _pure_; |
87f0e418 | 486 | |
e537352b LP |
487 | int unit_load_fragment_and_dropin(Unit *u); |
488 | int unit_load_fragment_and_dropin_optional(Unit *u); | |
87f0e418 LP |
489 | int unit_load(Unit *unit); |
490 | ||
d79200e2 LP |
491 | int unit_set_slice(Unit *u, Unit *slice); |
492 | int unit_set_default_slice(Unit *u); | |
a016b922 | 493 | |
44a6b1b6 | 494 | const char *unit_description(Unit *u) _pure_; |
87f0e418 | 495 | |
f278026d LP |
496 | bool unit_has_name(Unit *u, const char *name); |
497 | ||
87f0e418 LP |
498 | UnitActiveState unit_active_state(Unit *u); |
499 | ||
10a94420 LP |
500 | const char* unit_sub_state_to_string(Unit *u); |
501 | ||
87f0e418 LP |
502 | void unit_dump(Unit *u, FILE *f, const char *prefix); |
503 | ||
44a6b1b6 ZJS |
504 | bool unit_can_reload(Unit *u) _pure_; |
505 | bool unit_can_start(Unit *u) _pure_; | |
506 | bool unit_can_isolate(Unit *u) _pure_; | |
87f0e418 LP |
507 | |
508 | int unit_start(Unit *u); | |
509 | int unit_stop(Unit *u); | |
510 | int unit_reload(Unit *u); | |
511 | ||
718db961 LP |
512 | int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error); |
513 | int unit_kill_common(Unit *u, KillWho who, int signo, pid_t main_pid, pid_t control_pid, sd_bus_error *error); | |
8a0867d6 | 514 | |
e2f3b44c | 515 | void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success); |
87f0e418 | 516 | |
87f0e418 LP |
517 | int unit_watch_pid(Unit *u, pid_t pid); |
518 | void unit_unwatch_pid(Unit *u, pid_t pid); | |
a911bb9a LP |
519 | void unit_unwatch_all_pids(Unit *u); |
520 | ||
521 | void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2); | |
87f0e418 | 522 | |
bbc29086 | 523 | int unit_install_bus_match(sd_bus *bus, Unit *u, const char *name); |
05e343b7 LP |
524 | int unit_watch_bus_name(Unit *u, const char *name); |
525 | void unit_unwatch_bus_name(Unit *u, const char *name); | |
526 | ||
87f0e418 LP |
527 | bool unit_job_is_applicable(Unit *u, JobType j); |
528 | ||
0301abf4 LP |
529 | int set_unit_path(const char *p); |
530 | ||
50159e6a LP |
531 | char *unit_dbus_path(Unit *u); |
532 | ||
f6ff8c29 LP |
533 | int unit_load_related_unit(Unit *u, const char *type, Unit **_found); |
534 | ||
44a6b1b6 | 535 | bool unit_can_serialize(Unit *u) _pure_; |
6b78f9b4 | 536 | int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs); |
44b601bc | 537 | void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *value, ...) _printf_(4,5); |
a16e1123 LP |
538 | void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value); |
539 | int unit_deserialize(Unit *u, FILE *f, FDSet *fds); | |
540 | ||
6e2ef85b LP |
541 | int unit_add_node_link(Unit *u, const char *what, bool wants); |
542 | ||
be847e82 | 543 | int unit_coldplug(Unit *u); |
cca098b0 | 544 | |
44b601bc | 545 | void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) _printf_(3, 0); |
d1a34ae9 | 546 | void unit_status_emit_starting_stopping_reloading(Unit *u, JobType t); |
9e58ff9c | 547 | |
45fb0699 LP |
548 | bool unit_need_daemon_reload(Unit *u); |
549 | ||
fdf20a31 | 550 | void unit_reset_failed(Unit *u); |
5632e374 | 551 | |
a7f241db | 552 | Unit *unit_following(Unit *u); |
eeaedb7c | 553 | int unit_following_set(Unit *u, Set **s); |
a7f241db | 554 | |
9444b1f2 LP |
555 | const char *unit_slice_name(Unit *u); |
556 | ||
44a6b1b6 ZJS |
557 | bool unit_stop_pending(Unit *u) _pure_; |
558 | bool unit_inactive_or_pending(Unit *u) _pure_; | |
31afa0a4 | 559 | bool unit_active_or_pending(Unit *u); |
18ffdfda | 560 | |
bba34eed LP |
561 | int unit_add_default_target_dependency(Unit *u, Unit *target); |
562 | ||
3ecaa09b LP |
563 | void unit_start_on_failure(Unit *u); |
564 | void unit_trigger_notify(Unit *u); | |
c0daa706 | 565 | |
a4375746 | 566 | UnitFileState unit_get_unit_file_state(Unit *u); |
d2dc52db | 567 | int unit_get_unit_file_preset(Unit *u); |
a4375746 | 568 | |
57020a3a LP |
569 | Unit* unit_ref_set(UnitRef *ref, Unit *u); |
570 | void unit_ref_unset(UnitRef *ref); | |
571 | ||
572 | #define UNIT_DEREF(ref) ((ref).unit) | |
9444b1f2 | 573 | #define UNIT_ISSET(ref) (!!(ref).unit) |
57020a3a | 574 | |
598459ce | 575 | int unit_patch_contexts(Unit *u); |
e06c73cc | 576 | |
44a6b1b6 | 577 | ExecContext *unit_get_exec_context(Unit *u) _pure_; |
718db961 | 578 | KillContext *unit_get_kill_context(Unit *u) _pure_; |
4ad49000 | 579 | CGroupContext *unit_get_cgroup_context(Unit *u) _pure_; |
598459ce | 580 | |
613b411c LP |
581 | ExecRuntime *unit_get_exec_runtime(Unit *u) _pure_; |
582 | ||
583 | int unit_setup_exec_runtime(Unit *u); | |
3ef63c31 | 584 | |
8e2af478 | 585 | int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data); |
44b601bc | 586 | int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) _printf_(4,5); |
b9ec9359 LP |
587 | |
588 | int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data); | |
44b601bc | 589 | int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) _printf_(4,5); |
b9ec9359 | 590 | |
8e2af478 | 591 | int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name); |
71645aca | 592 | |
db2cb23b | 593 | int unit_kill_context(Unit *u, KillContext *c, KillOperation k, pid_t main_pid, pid_t control_pid, bool main_pid_alien); |
cd2086fe | 594 | |
c2756a68 LP |
595 | int unit_make_transient(Unit *u); |
596 | ||
a57f7e2c LP |
597 | int unit_require_mounts_for(Unit *u, const char *path); |
598 | ||
1c2e9646 LP |
599 | bool unit_type_supported(UnitType t); |
600 | ||
601 | static inline bool unit_supported(Unit *u) { | |
602 | return unit_type_supported(u->type); | |
603 | } | |
604 | ||
8b4305c7 LP |
605 | void unit_warn_if_dir_nonempty(Unit *u, const char* where); |
606 | int unit_fail_if_symlink(Unit *u, const char* where); | |
607 | ||
e8e581bf ZJS |
608 | /* Macros which append UNIT= or USER_UNIT= to the message */ |
609 | ||
f2341e0a LP |
610 | #define log_unit_full(unit, level, error, ...) \ |
611 | ({ \ | |
612 | Unit *_u = (unit); \ | |
613 | _u ? log_object_internal(level, error, __FILE__, __LINE__, __func__, _u->manager->unit_log_field, _u->id, ##__VA_ARGS__) : \ | |
614 | log_internal(level, error, __FILE__, __LINE__, __func__, ##__VA_ARGS__); \ | |
615 | }) | |
616 | ||
617 | #define log_unit_debug(unit, ...) log_unit_full(unit, LOG_DEBUG, 0, ##__VA_ARGS__) | |
618 | #define log_unit_info(unit, ...) log_unit_full(unit, LOG_INFO, 0, ##__VA_ARGS__) | |
619 | #define log_unit_notice(unit, ...) log_unit_full(unit, LOG_NOTICE, 0, ##__VA_ARGS__) | |
620 | #define log_unit_warning(unit, ...) log_unit_full(unit, LOG_WARNING, 0, ##__VA_ARGS__) | |
621 | #define log_unit_error(unit, ...) log_unit_full(unit, LOG_ERR, 0, ##__VA_ARGS__) | |
622 | ||
623 | #define log_unit_debug_errno(unit, error, ...) log_unit_full(unit, LOG_DEBUG, error, ##__VA_ARGS__) | |
624 | #define log_unit_info_errno(unit, error, ...) log_unit_full(unit, LOG_INFO, error, ##__VA_ARGS__) | |
625 | #define log_unit_notice_errno(unit, error, ...) log_unit_full(unit, LOG_NOTICE, error, ##__VA_ARGS__) | |
626 | #define log_unit_warning_errno(unit, error, ...) log_unit_full(unit, LOG_WARNING, error, ##__VA_ARGS__) | |
627 | #define log_unit_error_errno(unit, error, ...) log_unit_full(unit, LOG_ERR, error, ##__VA_ARGS__) | |
628 | ||
629 | #define LOG_UNIT_MESSAGE(unit, fmt, ...) "MESSAGE=%s: " fmt, (unit)->id, ##__VA_ARGS__ | |
630 | #define LOG_UNIT_ID(unit) (unit)->manager->unit_log_format_string, (unit)->id |