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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
5cb5a6ff | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
d46de8a1 LP |
22 | #include <errno.h> |
23 | ||
87f0e418 | 24 | #include "unit.h" |
871d7de4 | 25 | #include "unit-name.h" |
5cb5a6ff | 26 | #include "timer.h" |
871d7de4 | 27 | #include "dbus-timer.h" |
a40eb732 | 28 | #include "special.h" |
718db961 LP |
29 | #include "bus-util.h" |
30 | #include "bus-error.h" | |
06642d17 | 31 | #include "mkdir.h" |
871d7de4 LP |
32 | |
33 | static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = { | |
34 | [TIMER_DEAD] = UNIT_INACTIVE, | |
35 | [TIMER_WAITING] = UNIT_ACTIVE, | |
36 | [TIMER_RUNNING] = UNIT_ACTIVE, | |
37 | [TIMER_ELAPSED] = UNIT_ACTIVE, | |
fdf20a31 | 38 | [TIMER_FAILED] = UNIT_FAILED |
871d7de4 LP |
39 | }; |
40 | ||
718db961 LP |
41 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata); |
42 | ||
871d7de4 LP |
43 | static void timer_init(Unit *u) { |
44 | Timer *t = TIMER(u); | |
45 | ||
46 | assert(u); | |
ac155bb8 | 47 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 48 | |
36697dc0 LP |
49 | t->next_elapse_monotonic = (usec_t) -1; |
50 | t->next_elapse_realtime = (usec_t) -1; | |
9f5eb56a | 51 | t->accuracy_usec = USEC_PER_MINUTE; |
871d7de4 | 52 | } |
5cb5a6ff | 53 | |
74051b9b | 54 | void timer_free_values(Timer *t) { |
871d7de4 LP |
55 | TimerValue *v; |
56 | ||
57 | assert(t); | |
58 | ||
59 | while ((v = t->values)) { | |
71fda00f | 60 | LIST_REMOVE(value, t->values, v); |
36697dc0 LP |
61 | |
62 | if (v->calendar_spec) | |
63 | calendar_spec_free(v->calendar_spec); | |
64 | ||
871d7de4 LP |
65 | free(v); |
66 | } | |
74051b9b LP |
67 | } |
68 | ||
69 | static void timer_done(Unit *u) { | |
70 | Timer *t = TIMER(u); | |
71 | ||
72 | assert(t); | |
73 | ||
74 | timer_free_values(t); | |
871d7de4 | 75 | |
718db961 LP |
76 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
77 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
06642d17 LP |
78 | |
79 | free(t->stamp_path); | |
871d7de4 LP |
80 | } |
81 | ||
82 | static int timer_verify(Timer *t) { | |
83 | assert(t); | |
84 | ||
1124fe6f | 85 | if (UNIT(t)->load_state != UNIT_LOADED) |
871d7de4 LP |
86 | return 0; |
87 | ||
88 | if (!t->values) { | |
06642d17 | 89 | log_error_unit(UNIT(t)->id, "%s lacks value setting. Refusing.", UNIT(t)->id); |
871d7de4 LP |
90 | return -EINVAL; |
91 | } | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
6c155fe3 LP |
96 | static int timer_add_default_dependencies(Timer *t) { |
97 | int r; | |
98 | ||
99 | assert(t); | |
100 | ||
e3d84721 LP |
101 | r = unit_add_dependency_by_name(UNIT(t), UNIT_BEFORE, SPECIAL_TIMERS_TARGET, NULL, true); |
102 | if (r < 0) | |
103 | return r; | |
2a77d31d | 104 | |
e3d84721 | 105 | if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) { |
36697dc0 LP |
106 | r = unit_add_two_dependencies_by_name(UNIT(t), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true); |
107 | if (r < 0) | |
6c155fe3 | 108 | return r; |
2a77d31d | 109 | } |
6c155fe3 | 110 | |
ead8e478 | 111 | return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
6c155fe3 LP |
112 | } |
113 | ||
06642d17 LP |
114 | static int timer_setup_persistent(Timer *t) { |
115 | int r; | |
116 | ||
117 | assert(t); | |
118 | ||
119 | if (!t->persistent) | |
120 | return 0; | |
121 | ||
122 | if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) { | |
123 | ||
124 | r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers"); | |
125 | if (r < 0) | |
126 | return r; | |
127 | ||
128 | t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id); | |
129 | } else { | |
130 | const char *e; | |
131 | ||
132 | e = getenv("XDG_DATA_HOME"); | |
133 | if (e) | |
134 | t->stamp_path = strjoin(e, "/systemd/timers/", UNIT(t)->id, NULL); | |
135 | else { | |
136 | ||
137 | _cleanup_free_ char *h = NULL; | |
138 | ||
139 | r = get_home_dir(&h); | |
140 | if (r < 0) { | |
141 | log_error("Failed to determine home directory: %s", strerror(-r)); | |
142 | return r; | |
143 | } | |
144 | ||
145 | t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL); | |
146 | } | |
147 | } | |
148 | ||
149 | if (!t->stamp_path) | |
150 | return log_oom(); | |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
871d7de4 LP |
155 | static int timer_load(Unit *u) { |
156 | Timer *t = TIMER(u); | |
157 | int r; | |
158 | ||
159 | assert(u); | |
ac155bb8 | 160 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 161 | |
36697dc0 LP |
162 | r = unit_load_fragment_and_dropin(u); |
163 | if (r < 0) | |
871d7de4 LP |
164 | return r; |
165 | ||
ac155bb8 | 166 | if (u->load_state == UNIT_LOADED) { |
871d7de4 | 167 | |
3ecaa09b | 168 | if (set_isempty(u->dependencies[UNIT_TRIGGERS])) { |
57020a3a LP |
169 | Unit *x; |
170 | ||
171 | r = unit_load_related_unit(u, ".service", &x); | |
172 | if (r < 0) | |
871d7de4 LP |
173 | return r; |
174 | ||
3ecaa09b LP |
175 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
176 | if (r < 0) | |
177 | return r; | |
57020a3a LP |
178 | } |
179 | ||
06642d17 LP |
180 | r = timer_setup_persistent(t); |
181 | if (r < 0) | |
182 | return r; | |
183 | ||
184 | if (u->default_dependencies) { | |
36697dc0 LP |
185 | r = timer_add_default_dependencies(t); |
186 | if (r < 0) | |
a40eb732 | 187 | return r; |
36697dc0 | 188 | } |
871d7de4 LP |
189 | } |
190 | ||
191 | return timer_verify(t); | |
192 | } | |
193 | ||
194 | static void timer_dump(Unit *u, FILE *f, const char *prefix) { | |
9f5eb56a | 195 | char buf[FORMAT_TIMESPAN_MAX]; |
871d7de4 | 196 | Timer *t = TIMER(u); |
3ecaa09b | 197 | Unit *trigger; |
871d7de4 | 198 | TimerValue *v; |
034c6ed7 | 199 | |
3ecaa09b LP |
200 | trigger = UNIT_TRIGGER(u); |
201 | ||
871d7de4 LP |
202 | fprintf(f, |
203 | "%sTimer State: %s\n" | |
067d72c9 | 204 | "%sResult: %s\n" |
9f5eb56a LP |
205 | "%sUnit: %s\n" |
206 | "%sAccuracy: %s\n", | |
871d7de4 | 207 | prefix, timer_state_to_string(t->state), |
067d72c9 | 208 | prefix, timer_result_to_string(t->result), |
9f5eb56a LP |
209 | prefix, trigger ? trigger->id : "n/a", |
210 | prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1)); | |
871d7de4 | 211 | |
36697dc0 LP |
212 | LIST_FOREACH(value, v, t->values) { |
213 | ||
214 | if (v->base == TIMER_CALENDAR) { | |
215 | _cleanup_free_ char *p = NULL; | |
216 | ||
217 | calendar_spec_to_string(v->calendar_spec, &p); | |
218 | ||
219 | fprintf(f, | |
220 | "%s%s: %s\n", | |
221 | prefix, | |
222 | timer_base_to_string(v->base), | |
223 | strna(p)); | |
224 | } else { | |
225 | char timespan1[FORMAT_TIMESPAN_MAX]; | |
226 | ||
227 | fprintf(f, | |
228 | "%s%s: %s\n", | |
229 | prefix, | |
230 | timer_base_to_string(v->base), | |
2fa4092c | 231 | strna(format_timespan(timespan1, sizeof(timespan1), v->value, 0))); |
36697dc0 LP |
232 | } |
233 | } | |
871d7de4 LP |
234 | } |
235 | ||
236 | static void timer_set_state(Timer *t, TimerState state) { | |
237 | TimerState old_state; | |
034c6ed7 | 238 | assert(t); |
871d7de4 LP |
239 | |
240 | old_state = t->state; | |
241 | t->state = state; | |
242 | ||
36697dc0 | 243 | if (state != TIMER_WAITING) { |
718db961 LP |
244 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
245 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
36697dc0 | 246 | } |
871d7de4 LP |
247 | |
248 | if (state != old_state) | |
66870f90 ZJS |
249 | log_debug_unit(UNIT(t)->id, |
250 | "%s changed %s -> %s", UNIT(t)->id, | |
251 | timer_state_to_string(old_state), | |
252 | timer_state_to_string(state)); | |
871d7de4 | 253 | |
e2f3b44c | 254 | unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); |
871d7de4 LP |
255 | } |
256 | ||
257 | static void timer_enter_waiting(Timer *t, bool initial); | |
258 | ||
259 | static int timer_coldplug(Unit *u) { | |
260 | Timer *t = TIMER(u); | |
261 | ||
262 | assert(t); | |
263 | assert(t->state == TIMER_DEAD); | |
264 | ||
265 | if (t->deserialized_state != t->state) { | |
266 | ||
b363ca6f | 267 | if (t->deserialized_state == TIMER_WAITING) |
871d7de4 LP |
268 | timer_enter_waiting(t, false); |
269 | else | |
270 | timer_set_state(t, t->deserialized_state); | |
271 | } | |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
067d72c9 | 276 | static void timer_enter_dead(Timer *t, TimerResult f) { |
871d7de4 LP |
277 | assert(t); |
278 | ||
067d72c9 LP |
279 | if (f != TIMER_SUCCESS) |
280 | t->result = f; | |
871d7de4 | 281 | |
067d72c9 | 282 | timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); |
871d7de4 LP |
283 | } |
284 | ||
285 | static void timer_enter_waiting(Timer *t, bool initial) { | |
286 | TimerValue *v; | |
36697dc0 LP |
287 | usec_t base = 0; |
288 | dual_timestamp ts; | |
289 | bool found_monotonic = false, found_realtime = false; | |
871d7de4 LP |
290 | int r; |
291 | ||
36697dc0 LP |
292 | dual_timestamp_get(&ts); |
293 | t->next_elapse_monotonic = t->next_elapse_realtime = 0; | |
871d7de4 LP |
294 | |
295 | LIST_FOREACH(value, v, t->values) { | |
296 | ||
297 | if (v->disabled) | |
298 | continue; | |
299 | ||
36697dc0 | 300 | if (v->base == TIMER_CALENDAR) { |
06642d17 LP |
301 | usec_t b; |
302 | ||
303 | /* If we know the last time this was | |
304 | * triggered, schedule the job based relative | |
305 | * to that. If we don't just start from | |
306 | * now. */ | |
36697dc0 | 307 | |
06642d17 LP |
308 | b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts.realtime; |
309 | ||
310 | r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); | |
36697dc0 LP |
311 | if (r < 0) |
312 | continue; | |
313 | ||
36697dc0 LP |
314 | if (!found_realtime) |
315 | t->next_elapse_realtime = v->next_elapse; | |
10717a1a | 316 | else |
36697dc0 | 317 | t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); |
871d7de4 | 318 | |
36697dc0 | 319 | found_realtime = true; |
871d7de4 | 320 | |
36697dc0 LP |
321 | } else { |
322 | switch (v->base) { | |
871d7de4 | 323 | |
36697dc0 LP |
324 | case TIMER_ACTIVE: |
325 | if (state_translation_table[t->state] == UNIT_ACTIVE) | |
326 | base = UNIT(t)->inactive_exit_timestamp.monotonic; | |
327 | else | |
328 | base = ts.monotonic; | |
329 | break; | |
871d7de4 | 330 | |
36697dc0 LP |
331 | case TIMER_BOOT: |
332 | /* CLOCK_MONOTONIC equals the uptime on Linux */ | |
333 | base = 0; | |
334 | break; | |
871d7de4 | 335 | |
36697dc0 LP |
336 | case TIMER_STARTUP: |
337 | base = UNIT(t)->manager->userspace_timestamp.monotonic; | |
338 | break; | |
871d7de4 | 339 | |
36697dc0 | 340 | case TIMER_UNIT_ACTIVE: |
871d7de4 | 341 | |
e41e1943 LP |
342 | base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic; |
343 | ||
344 | if (base <= 0) | |
06642d17 | 345 | base = t->last_trigger.monotonic; |
e41e1943 LP |
346 | |
347 | if (base <= 0) | |
36697dc0 | 348 | continue; |
871d7de4 | 349 | |
36697dc0 | 350 | break; |
871d7de4 | 351 | |
36697dc0 | 352 | case TIMER_UNIT_INACTIVE: |
871d7de4 | 353 | |
e41e1943 LP |
354 | base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic; |
355 | ||
356 | if (base <= 0) | |
06642d17 | 357 | base = t->last_trigger.monotonic; |
e41e1943 LP |
358 | |
359 | if (base <= 0) | |
36697dc0 | 360 | continue; |
871d7de4 | 361 | |
36697dc0 | 362 | break; |
871d7de4 | 363 | |
36697dc0 LP |
364 | default: |
365 | assert_not_reached("Unknown timer base"); | |
366 | } | |
871d7de4 | 367 | |
36697dc0 LP |
368 | v->next_elapse = base + v->value; |
369 | ||
06642d17 | 370 | if (!initial && v->next_elapse < ts.monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { |
e41e1943 | 371 | /* This is a one time trigger, disable it now */ |
36697dc0 LP |
372 | v->disabled = true; |
373 | continue; | |
374 | } | |
375 | ||
376 | if (!found_monotonic) | |
377 | t->next_elapse_monotonic = v->next_elapse; | |
378 | else | |
379 | t->next_elapse_monotonic = MIN(t->next_elapse_monotonic, v->next_elapse); | |
380 | ||
381 | found_monotonic = true; | |
382 | } | |
871d7de4 LP |
383 | } |
384 | ||
36697dc0 | 385 | if (!found_monotonic && !found_realtime) { |
66870f90 | 386 | log_debug_unit(UNIT(t)->id, "%s: Timer is elapsed.", UNIT(t)->id); |
871d7de4 LP |
387 | timer_set_state(t, TIMER_ELAPSED); |
388 | return; | |
389 | } | |
390 | ||
36697dc0 LP |
391 | if (found_monotonic) { |
392 | char buf[FORMAT_TIMESPAN_MAX]; | |
06642d17 | 393 | log_debug_unit(UNIT(t)->id, "%s: Monotonic timer elapses in %s.", UNIT(t)->id, format_timespan(buf, sizeof(buf), t->next_elapse_monotonic > ts.monotonic ? t->next_elapse_monotonic - ts.monotonic : 0, 0)); |
871d7de4 | 394 | |
718db961 LP |
395 | if (t->monotonic_event_source) { |
396 | r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic); | |
397 | if (r < 0) | |
398 | goto fail; | |
399 | ||
400 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT); | |
401 | } else | |
151b9b96 | 402 | r = sd_event_add_monotonic(UNIT(t)->manager->event, &t->monotonic_event_source, t->next_elapse_monotonic, t->accuracy_usec, timer_dispatch, t); |
36697dc0 LP |
403 | if (r < 0) |
404 | goto fail; | |
718db961 LP |
405 | |
406 | } else if (t->monotonic_event_source) { | |
718db961 | 407 | |
06642d17 | 408 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_OFF); |
718db961 LP |
409 | if (r < 0) |
410 | goto fail; | |
411 | } | |
36697dc0 LP |
412 | |
413 | if (found_realtime) { | |
414 | char buf[FORMAT_TIMESTAMP_MAX]; | |
06642d17 | 415 | log_debug_unit(UNIT(t)->id, "%s: Realtime timer elapses at %s.", UNIT(t)->id, format_timestamp(buf, sizeof(buf), t->next_elapse_realtime)); |
36697dc0 | 416 | |
718db961 LP |
417 | if (t->realtime_event_source) { |
418 | r = sd_event_source_set_time(t->realtime_event_source, t->next_elapse_realtime); | |
419 | if (r < 0) | |
420 | goto fail; | |
421 | ||
422 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_ONESHOT); | |
423 | } else | |
151b9b96 | 424 | r = sd_event_add_realtime(UNIT(t)->manager->event, &t->realtime_event_source, t->next_elapse_realtime, t->accuracy_usec, timer_dispatch, t); |
36697dc0 LP |
425 | if (r < 0) |
426 | goto fail; | |
718db961 LP |
427 | |
428 | } else if (t->realtime_event_source) { | |
718db961 | 429 | |
06642d17 | 430 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); |
718db961 LP |
431 | if (r < 0) |
432 | goto fail; | |
433 | } | |
871d7de4 LP |
434 | |
435 | timer_set_state(t, TIMER_WAITING); | |
436 | return; | |
437 | ||
438 | fail: | |
06642d17 | 439 | log_warning_unit(UNIT(t)->id, "%s failed to enter waiting state: %s", UNIT(t)->id, strerror(-r)); |
067d72c9 | 440 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
441 | } |
442 | ||
443 | static void timer_enter_running(Timer *t) { | |
718db961 | 444 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
871d7de4 | 445 | int r; |
398ef8ba | 446 | |
871d7de4 LP |
447 | assert(t); |
448 | ||
ba3e67a7 | 449 | /* Don't start job if we are supposed to go down */ |
31afa0a4 | 450 | if (unit_stop_pending(UNIT(t))) |
ba3e67a7 LP |
451 | return; |
452 | ||
3ecaa09b LP |
453 | r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)), |
454 | JOB_REPLACE, true, &error, NULL); | |
36697dc0 | 455 | if (r < 0) |
871d7de4 LP |
456 | goto fail; |
457 | ||
06642d17 LP |
458 | dual_timestamp_get(&t->last_trigger); |
459 | ||
460 | if (t->stamp_path) { | |
461 | _cleanup_close_ int fd = -1; | |
462 | ||
463 | mkdir_parents_label(t->stamp_path, 0755); | |
464 | ||
465 | /* Update the file atime + mtime, if we can */ | |
466 | fd = open(t->stamp_path, O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0644); | |
467 | if (fd >= 0) { | |
468 | struct timespec ts[2]; | |
469 | ||
470 | timespec_store(&ts[0], t->last_trigger.realtime); | |
471 | ts[1] = ts[0]; | |
472 | ||
473 | futimens(fd, ts); | |
474 | } | |
475 | } | |
e41e1943 | 476 | |
871d7de4 LP |
477 | timer_set_state(t, TIMER_RUNNING); |
478 | return; | |
479 | ||
480 | fail: | |
66870f90 ZJS |
481 | log_warning_unit(UNIT(t)->id, |
482 | "%s failed to queue unit startup job: %s", | |
718db961 | 483 | UNIT(t)->id, bus_error_message(&error, r)); |
067d72c9 | 484 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
485 | } |
486 | ||
487 | static int timer_start(Unit *u) { | |
488 | Timer *t = TIMER(u); | |
489 | ||
490 | assert(t); | |
fdf20a31 | 491 | assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED); |
01f78473 | 492 | |
3ecaa09b | 493 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 494 | return -ENOENT; |
871d7de4 | 495 | |
06642d17 LP |
496 | t->last_trigger = DUAL_TIMESTAMP_NULL; |
497 | ||
498 | if (t->stamp_path) { | |
499 | struct stat st; | |
500 | ||
501 | if (stat(t->stamp_path, &st) >= 0) | |
502 | t->last_trigger.realtime = timespec_load(&st.st_atim); | |
503 | } | |
504 | ||
067d72c9 | 505 | t->result = TIMER_SUCCESS; |
871d7de4 LP |
506 | timer_enter_waiting(t, true); |
507 | return 0; | |
508 | } | |
509 | ||
510 | static int timer_stop(Unit *u) { | |
511 | Timer *t = TIMER(u); | |
512 | ||
513 | assert(t); | |
514 | assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); | |
515 | ||
067d72c9 | 516 | timer_enter_dead(t, TIMER_SUCCESS); |
871d7de4 LP |
517 | return 0; |
518 | } | |
519 | ||
520 | static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { | |
521 | Timer *t = TIMER(u); | |
522 | ||
523 | assert(u); | |
524 | assert(f); | |
525 | assert(fds); | |
526 | ||
527 | unit_serialize_item(u, f, "state", timer_state_to_string(t->state)); | |
067d72c9 | 528 | unit_serialize_item(u, f, "result", timer_result_to_string(t->result)); |
871d7de4 | 529 | |
06642d17 LP |
530 | if (t->last_trigger.realtime > 0) |
531 | unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime); | |
532 | ||
533 | if (t->last_trigger.monotonic > 0) | |
534 | unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic); | |
535 | ||
871d7de4 LP |
536 | return 0; |
537 | } | |
538 | ||
539 | static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
540 | Timer *t = TIMER(u); | |
06642d17 | 541 | int r; |
871d7de4 LP |
542 | |
543 | assert(u); | |
544 | assert(key); | |
545 | assert(value); | |
546 | assert(fds); | |
547 | ||
548 | if (streq(key, "state")) { | |
549 | TimerState state; | |
550 | ||
36697dc0 LP |
551 | state = timer_state_from_string(value); |
552 | if (state < 0) | |
66870f90 | 553 | log_debug_unit(u->id, "Failed to parse state value %s", value); |
871d7de4 LP |
554 | else |
555 | t->deserialized_state = state; | |
067d72c9 LP |
556 | } else if (streq(key, "result")) { |
557 | TimerResult f; | |
558 | ||
559 | f = timer_result_from_string(value); | |
560 | if (f < 0) | |
66870f90 | 561 | log_debug_unit(u->id, "Failed to parse result value %s", value); |
067d72c9 LP |
562 | else if (f != TIMER_SUCCESS) |
563 | t->result = f; | |
06642d17 LP |
564 | } else if (streq(key, "last-trigger-realtime")) { |
565 | ||
566 | r = safe_atou64(value, &t->last_trigger.realtime); | |
567 | if (r < 0) | |
568 | log_debug_unit(u->id, "Failed to parse last-trigger-realtime value %s", value); | |
569 | ||
570 | } else if (streq(key, "last-trigger-monotonic")) { | |
571 | ||
572 | r = safe_atou64(value, &t->last_trigger.monotonic); | |
573 | if (r < 0) | |
574 | log_debug_unit(u->id, "Failed to parse last-trigger-monotonic value %s", value); | |
067d72c9 | 575 | |
871d7de4 | 576 | } else |
66870f90 | 577 | log_debug_unit(u->id, "Unknown serialization key '%s'", key); |
871d7de4 LP |
578 | |
579 | return 0; | |
034c6ed7 LP |
580 | } |
581 | ||
44a6b1b6 | 582 | _pure_ static UnitActiveState timer_active_state(Unit *u) { |
871d7de4 LP |
583 | assert(u); |
584 | ||
585 | return state_translation_table[TIMER(u)->state]; | |
586 | } | |
587 | ||
44a6b1b6 | 588 | _pure_ static const char *timer_sub_state_to_string(Unit *u) { |
871d7de4 LP |
589 | assert(u); |
590 | ||
591 | return timer_state_to_string(TIMER(u)->state); | |
592 | } | |
593 | ||
718db961 LP |
594 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) { |
595 | Timer *t = TIMER(userdata); | |
871d7de4 LP |
596 | |
597 | assert(t); | |
5cb5a6ff | 598 | |
871d7de4 | 599 | if (t->state != TIMER_WAITING) |
718db961 | 600 | return 0; |
5cb5a6ff | 601 | |
718db961 | 602 | log_debug_unit(UNIT(t)->id, "Timer elapsed on %s", UNIT(t)->id); |
871d7de4 | 603 | timer_enter_running(t); |
718db961 | 604 | return 0; |
5cb5a6ff LP |
605 | } |
606 | ||
3ecaa09b LP |
607 | static void timer_trigger_notify(Unit *u, Unit *other) { |
608 | Timer *t = TIMER(u); | |
609 | TimerValue *v; | |
871d7de4 | 610 | |
3ecaa09b LP |
611 | assert(u); |
612 | assert(other); | |
871d7de4 | 613 | |
3ecaa09b LP |
614 | if (other->load_state != UNIT_LOADED) |
615 | return; | |
871d7de4 | 616 | |
3ecaa09b LP |
617 | /* Reenable all timers that depend on unit state */ |
618 | LIST_FOREACH(value, v, t->values) | |
619 | if (v->base == TIMER_UNIT_ACTIVE || | |
620 | v->base == TIMER_UNIT_INACTIVE) | |
621 | v->disabled = false; | |
01f78473 | 622 | |
3ecaa09b | 623 | switch (t->state) { |
871d7de4 | 624 | |
3ecaa09b LP |
625 | case TIMER_WAITING: |
626 | case TIMER_ELAPSED: | |
871d7de4 | 627 | |
3ecaa09b LP |
628 | /* Recalculate sleep time */ |
629 | timer_enter_waiting(t, false); | |
630 | break; | |
871d7de4 | 631 | |
3ecaa09b | 632 | case TIMER_RUNNING: |
871d7de4 | 633 | |
3ecaa09b | 634 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) { |
06642d17 | 635 | log_debug_unit(UNIT(t)->id, "%s got notified about unit deactivation.", UNIT(t)->id); |
871d7de4 | 636 | timer_enter_waiting(t, false); |
3ecaa09b LP |
637 | } |
638 | break; | |
871d7de4 | 639 | |
3ecaa09b LP |
640 | case TIMER_DEAD: |
641 | case TIMER_FAILED: | |
642 | break; | |
871d7de4 | 643 | |
3ecaa09b LP |
644 | default: |
645 | assert_not_reached("Unknown timer state"); | |
871d7de4 | 646 | } |
871d7de4 LP |
647 | } |
648 | ||
fdf20a31 | 649 | static void timer_reset_failed(Unit *u) { |
5632e374 LP |
650 | Timer *t = TIMER(u); |
651 | ||
652 | assert(t); | |
653 | ||
fdf20a31 | 654 | if (t->state == TIMER_FAILED) |
5632e374 LP |
655 | timer_set_state(t, TIMER_DEAD); |
656 | ||
067d72c9 | 657 | t->result = TIMER_SUCCESS; |
5632e374 LP |
658 | } |
659 | ||
8742514c LP |
660 | static void timer_time_change(Unit *u) { |
661 | Timer *t = TIMER(u); | |
662 | ||
663 | assert(u); | |
664 | ||
665 | if (t->state != TIMER_WAITING) | |
666 | return; | |
667 | ||
06642d17 | 668 | log_debug_unit(u->id, "%s: time change, recalculating next elapse.", u->id); |
8742514c LP |
669 | timer_enter_waiting(t, false); |
670 | } | |
671 | ||
871d7de4 LP |
672 | static const char* const timer_state_table[_TIMER_STATE_MAX] = { |
673 | [TIMER_DEAD] = "dead", | |
674 | [TIMER_WAITING] = "waiting", | |
675 | [TIMER_RUNNING] = "running", | |
676 | [TIMER_ELAPSED] = "elapsed", | |
fdf20a31 | 677 | [TIMER_FAILED] = "failed" |
871d7de4 LP |
678 | }; |
679 | ||
680 | DEFINE_STRING_TABLE_LOOKUP(timer_state, TimerState); | |
681 | ||
682 | static const char* const timer_base_table[_TIMER_BASE_MAX] = { | |
03fae018 LP |
683 | [TIMER_ACTIVE] = "OnActiveSec", |
684 | [TIMER_BOOT] = "OnBootSec", | |
685 | [TIMER_STARTUP] = "OnStartupSec", | |
686 | [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", | |
36697dc0 LP |
687 | [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", |
688 | [TIMER_CALENDAR] = "OnCalendar" | |
871d7de4 LP |
689 | }; |
690 | ||
691 | DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); | |
692 | ||
067d72c9 LP |
693 | static const char* const timer_result_table[_TIMER_RESULT_MAX] = { |
694 | [TIMER_SUCCESS] = "success", | |
695 | [TIMER_FAILURE_RESOURCES] = "resources" | |
696 | }; | |
697 | ||
698 | DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); | |
699 | ||
87f0e418 | 700 | const UnitVTable timer_vtable = { |
7d17cfbc | 701 | .object_size = sizeof(Timer), |
718db961 | 702 | |
f975e971 LP |
703 | .sections = |
704 | "Unit\0" | |
705 | "Timer\0" | |
706 | "Install\0", | |
5cb5a6ff | 707 | |
871d7de4 | 708 | .init = timer_init, |
034c6ed7 | 709 | .done = timer_done, |
871d7de4 LP |
710 | .load = timer_load, |
711 | ||
712 | .coldplug = timer_coldplug, | |
713 | ||
714 | .dump = timer_dump, | |
715 | ||
716 | .start = timer_start, | |
717 | .stop = timer_stop, | |
718 | ||
719 | .serialize = timer_serialize, | |
720 | .deserialize_item = timer_deserialize_item, | |
721 | ||
722 | .active_state = timer_active_state, | |
723 | .sub_state_to_string = timer_sub_state_to_string, | |
724 | ||
3ecaa09b LP |
725 | .trigger_notify = timer_trigger_notify, |
726 | ||
fdf20a31 | 727 | .reset_failed = timer_reset_failed, |
8742514c | 728 | .time_change = timer_time_change, |
5632e374 | 729 | |
c4e2ceae | 730 | .bus_interface = "org.freedesktop.systemd1.Timer", |
718db961 | 731 | .bus_vtable = bus_timer_vtable, |
5cb5a6ff | 732 | }; |