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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" | |
871d7de4 LP |
31 | |
32 | static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = { | |
33 | [TIMER_DEAD] = UNIT_INACTIVE, | |
34 | [TIMER_WAITING] = UNIT_ACTIVE, | |
35 | [TIMER_RUNNING] = UNIT_ACTIVE, | |
36 | [TIMER_ELAPSED] = UNIT_ACTIVE, | |
fdf20a31 | 37 | [TIMER_FAILED] = UNIT_FAILED |
871d7de4 LP |
38 | }; |
39 | ||
718db961 LP |
40 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata); |
41 | ||
871d7de4 LP |
42 | static void timer_init(Unit *u) { |
43 | Timer *t = TIMER(u); | |
44 | ||
45 | assert(u); | |
ac155bb8 | 46 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 47 | |
3a43da28 KS |
48 | t->next_elapse_monotonic_or_boottime = USEC_INFINITY; |
49 | t->next_elapse_realtime = USEC_INFINITY; | |
bd8f585b | 50 | t->accuracy_usec = u->manager->default_timer_accuracy_usec; |
871d7de4 | 51 | } |
5cb5a6ff | 52 | |
74051b9b | 53 | void timer_free_values(Timer *t) { |
871d7de4 LP |
54 | TimerValue *v; |
55 | ||
56 | assert(t); | |
57 | ||
58 | while ((v = t->values)) { | |
71fda00f | 59 | LIST_REMOVE(value, t->values, v); |
36697dc0 LP |
60 | |
61 | if (v->calendar_spec) | |
62 | calendar_spec_free(v->calendar_spec); | |
63 | ||
871d7de4 LP |
64 | free(v); |
65 | } | |
74051b9b LP |
66 | } |
67 | ||
68 | static void timer_done(Unit *u) { | |
69 | Timer *t = TIMER(u); | |
70 | ||
71 | assert(t); | |
72 | ||
73 | timer_free_values(t); | |
871d7de4 | 74 | |
718db961 LP |
75 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
76 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
06642d17 LP |
77 | |
78 | free(t->stamp_path); | |
871d7de4 LP |
79 | } |
80 | ||
81 | static int timer_verify(Timer *t) { | |
82 | assert(t); | |
83 | ||
1124fe6f | 84 | if (UNIT(t)->load_state != UNIT_LOADED) |
871d7de4 LP |
85 | return 0; |
86 | ||
87 | if (!t->values) { | |
79008bdd | 88 | log_unit_error(UNIT(t)->id, "%s lacks value setting. Refusing.", UNIT(t)->id); |
871d7de4 LP |
89 | return -EINVAL; |
90 | } | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
6c155fe3 LP |
95 | static int timer_add_default_dependencies(Timer *t) { |
96 | int r; | |
19f8d037 | 97 | TimerValue *v; |
6c155fe3 LP |
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; |
19f8d037 TGR |
109 | |
110 | LIST_FOREACH(value, v, t->values) { | |
111 | if (v->base == TIMER_CALENDAR) { | |
112 | r = unit_add_dependency_by_name(UNIT(t), UNIT_AFTER, SPECIAL_TIME_SYNC_TARGET, NULL, true); | |
113 | if (r < 0) | |
114 | return r; | |
115 | break; | |
116 | } | |
117 | } | |
2a77d31d | 118 | } |
6c155fe3 | 119 | |
ead8e478 | 120 | return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
6c155fe3 LP |
121 | } |
122 | ||
06642d17 LP |
123 | static int timer_setup_persistent(Timer *t) { |
124 | int r; | |
125 | ||
126 | assert(t); | |
127 | ||
128 | if (!t->persistent) | |
129 | return 0; | |
130 | ||
131 | if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) { | |
132 | ||
133 | r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers"); | |
134 | if (r < 0) | |
135 | return r; | |
136 | ||
137 | t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id); | |
138 | } else { | |
139 | const char *e; | |
140 | ||
141 | e = getenv("XDG_DATA_HOME"); | |
142 | if (e) | |
bd34b310 | 143 | t->stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id, NULL); |
06642d17 LP |
144 | else { |
145 | ||
146 | _cleanup_free_ char *h = NULL; | |
147 | ||
148 | r = get_home_dir(&h); | |
23bbb0de MS |
149 | if (r < 0) |
150 | return log_error_errno(r, "Failed to determine home directory: %m"); | |
06642d17 LP |
151 | |
152 | t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL); | |
153 | } | |
154 | } | |
155 | ||
156 | if (!t->stamp_path) | |
157 | return log_oom(); | |
158 | ||
159 | return 0; | |
160 | } | |
161 | ||
871d7de4 LP |
162 | static int timer_load(Unit *u) { |
163 | Timer *t = TIMER(u); | |
164 | int r; | |
165 | ||
166 | assert(u); | |
ac155bb8 | 167 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 168 | |
36697dc0 LP |
169 | r = unit_load_fragment_and_dropin(u); |
170 | if (r < 0) | |
871d7de4 LP |
171 | return r; |
172 | ||
ac155bb8 | 173 | if (u->load_state == UNIT_LOADED) { |
871d7de4 | 174 | |
3ecaa09b | 175 | if (set_isempty(u->dependencies[UNIT_TRIGGERS])) { |
57020a3a LP |
176 | Unit *x; |
177 | ||
178 | r = unit_load_related_unit(u, ".service", &x); | |
179 | if (r < 0) | |
871d7de4 LP |
180 | return r; |
181 | ||
3ecaa09b LP |
182 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
183 | if (r < 0) | |
184 | return r; | |
57020a3a LP |
185 | } |
186 | ||
06642d17 LP |
187 | r = timer_setup_persistent(t); |
188 | if (r < 0) | |
189 | return r; | |
190 | ||
191 | if (u->default_dependencies) { | |
36697dc0 LP |
192 | r = timer_add_default_dependencies(t); |
193 | if (r < 0) | |
a40eb732 | 194 | return r; |
36697dc0 | 195 | } |
871d7de4 LP |
196 | } |
197 | ||
198 | return timer_verify(t); | |
199 | } | |
200 | ||
201 | static void timer_dump(Unit *u, FILE *f, const char *prefix) { | |
9f5eb56a | 202 | char buf[FORMAT_TIMESPAN_MAX]; |
871d7de4 | 203 | Timer *t = TIMER(u); |
3ecaa09b | 204 | Unit *trigger; |
871d7de4 | 205 | TimerValue *v; |
034c6ed7 | 206 | |
3ecaa09b LP |
207 | trigger = UNIT_TRIGGER(u); |
208 | ||
871d7de4 LP |
209 | fprintf(f, |
210 | "%sTimer State: %s\n" | |
067d72c9 | 211 | "%sResult: %s\n" |
9f5eb56a | 212 | "%sUnit: %s\n" |
dedabea4 LP |
213 | "%sPersistent: %s\n" |
214 | "%sWakeSystem: %s\n" | |
9f5eb56a | 215 | "%sAccuracy: %s\n", |
871d7de4 | 216 | prefix, timer_state_to_string(t->state), |
067d72c9 | 217 | prefix, timer_result_to_string(t->result), |
9f5eb56a | 218 | prefix, trigger ? trigger->id : "n/a", |
dedabea4 LP |
219 | prefix, yes_no(t->persistent), |
220 | prefix, yes_no(t->wake_system), | |
9f5eb56a | 221 | prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1)); |
871d7de4 | 222 | |
36697dc0 LP |
223 | LIST_FOREACH(value, v, t->values) { |
224 | ||
225 | if (v->base == TIMER_CALENDAR) { | |
226 | _cleanup_free_ char *p = NULL; | |
227 | ||
228 | calendar_spec_to_string(v->calendar_spec, &p); | |
229 | ||
230 | fprintf(f, | |
231 | "%s%s: %s\n", | |
232 | prefix, | |
233 | timer_base_to_string(v->base), | |
234 | strna(p)); | |
235 | } else { | |
236 | char timespan1[FORMAT_TIMESPAN_MAX]; | |
237 | ||
238 | fprintf(f, | |
239 | "%s%s: %s\n", | |
240 | prefix, | |
241 | timer_base_to_string(v->base), | |
b1d6dcf5 | 242 | format_timespan(timespan1, sizeof(timespan1), v->value, 0)); |
36697dc0 LP |
243 | } |
244 | } | |
871d7de4 LP |
245 | } |
246 | ||
247 | static void timer_set_state(Timer *t, TimerState state) { | |
248 | TimerState old_state; | |
034c6ed7 | 249 | assert(t); |
871d7de4 LP |
250 | |
251 | old_state = t->state; | |
252 | t->state = state; | |
253 | ||
36697dc0 | 254 | if (state != TIMER_WAITING) { |
718db961 LP |
255 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
256 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
36697dc0 | 257 | } |
871d7de4 LP |
258 | |
259 | if (state != old_state) | |
79008bdd | 260 | log_unit_debug(UNIT(t)->id, |
66870f90 ZJS |
261 | "%s changed %s -> %s", UNIT(t)->id, |
262 | timer_state_to_string(old_state), | |
263 | timer_state_to_string(state)); | |
871d7de4 | 264 | |
e2f3b44c | 265 | unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); |
871d7de4 LP |
266 | } |
267 | ||
268 | static void timer_enter_waiting(Timer *t, bool initial); | |
269 | ||
6e392c9c IS |
270 | static int timer_enter_waiting_coldplug(Unit *u) { |
271 | timer_enter_waiting(TIMER(u), false); | |
272 | return 0; | |
273 | } | |
274 | ||
275 | static int timer_coldplug(Unit *u, Hashmap *deferred_work) { | |
871d7de4 LP |
276 | Timer *t = TIMER(u); |
277 | ||
278 | assert(t); | |
279 | assert(t->state == TIMER_DEAD); | |
280 | ||
281 | if (t->deserialized_state != t->state) { | |
282 | ||
6e392c9c IS |
283 | if (t->deserialized_state == TIMER_WAITING) { |
284 | hashmap_put(deferred_work, u, &timer_enter_waiting_coldplug); | |
285 | timer_set_state(t, TIMER_WAITING); | |
286 | } else | |
871d7de4 LP |
287 | timer_set_state(t, t->deserialized_state); |
288 | } | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
067d72c9 | 293 | static void timer_enter_dead(Timer *t, TimerResult f) { |
871d7de4 LP |
294 | assert(t); |
295 | ||
067d72c9 LP |
296 | if (f != TIMER_SUCCESS) |
297 | t->result = f; | |
871d7de4 | 298 | |
067d72c9 | 299 | timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); |
871d7de4 LP |
300 | } |
301 | ||
dedabea4 LP |
302 | static usec_t monotonic_to_boottime(usec_t t) { |
303 | usec_t a, b; | |
304 | ||
305 | if (t <= 0) | |
306 | return 0; | |
307 | ||
308 | a = now(CLOCK_BOOTTIME); | |
309 | b = now(CLOCK_MONOTONIC); | |
310 | ||
311 | if (t + a > b) | |
312 | return t + a - b; | |
313 | else | |
314 | return 0; | |
315 | } | |
316 | ||
871d7de4 | 317 | static void timer_enter_waiting(Timer *t, bool initial) { |
36697dc0 | 318 | bool found_monotonic = false, found_realtime = false; |
dedabea4 LP |
319 | usec_t ts_realtime, ts_monotonic; |
320 | usec_t base = 0; | |
321 | TimerValue *v; | |
871d7de4 LP |
322 | int r; |
323 | ||
dedabea4 LP |
324 | /* If we shall wake the system we use the boottime clock |
325 | * rather than the monotonic clock. */ | |
326 | ||
327 | ts_realtime = now(CLOCK_REALTIME); | |
328 | ts_monotonic = now(t->wake_system ? CLOCK_BOOTTIME : CLOCK_MONOTONIC); | |
329 | t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0; | |
871d7de4 LP |
330 | |
331 | LIST_FOREACH(value, v, t->values) { | |
332 | ||
333 | if (v->disabled) | |
334 | continue; | |
335 | ||
36697dc0 | 336 | if (v->base == TIMER_CALENDAR) { |
06642d17 LP |
337 | usec_t b; |
338 | ||
339 | /* If we know the last time this was | |
340 | * triggered, schedule the job based relative | |
341 | * to that. If we don't just start from | |
342 | * now. */ | |
36697dc0 | 343 | |
dedabea4 | 344 | b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime; |
06642d17 LP |
345 | |
346 | r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); | |
36697dc0 LP |
347 | if (r < 0) |
348 | continue; | |
349 | ||
36697dc0 LP |
350 | if (!found_realtime) |
351 | t->next_elapse_realtime = v->next_elapse; | |
10717a1a | 352 | else |
36697dc0 | 353 | t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); |
871d7de4 | 354 | |
36697dc0 | 355 | found_realtime = true; |
871d7de4 | 356 | |
36697dc0 LP |
357 | } else { |
358 | switch (v->base) { | |
871d7de4 | 359 | |
36697dc0 LP |
360 | case TIMER_ACTIVE: |
361 | if (state_translation_table[t->state] == UNIT_ACTIVE) | |
362 | base = UNIT(t)->inactive_exit_timestamp.monotonic; | |
363 | else | |
dedabea4 | 364 | base = ts_monotonic; |
36697dc0 | 365 | break; |
871d7de4 | 366 | |
36697dc0 LP |
367 | case TIMER_BOOT: |
368 | /* CLOCK_MONOTONIC equals the uptime on Linux */ | |
369 | base = 0; | |
370 | break; | |
871d7de4 | 371 | |
36697dc0 LP |
372 | case TIMER_STARTUP: |
373 | base = UNIT(t)->manager->userspace_timestamp.monotonic; | |
374 | break; | |
871d7de4 | 375 | |
36697dc0 | 376 | case TIMER_UNIT_ACTIVE: |
871d7de4 | 377 | |
e41e1943 LP |
378 | base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic; |
379 | ||
380 | if (base <= 0) | |
06642d17 | 381 | base = t->last_trigger.monotonic; |
e41e1943 LP |
382 | |
383 | if (base <= 0) | |
36697dc0 | 384 | continue; |
871d7de4 | 385 | |
36697dc0 | 386 | break; |
871d7de4 | 387 | |
36697dc0 | 388 | case TIMER_UNIT_INACTIVE: |
871d7de4 | 389 | |
e41e1943 LP |
390 | base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic; |
391 | ||
392 | if (base <= 0) | |
06642d17 | 393 | base = t->last_trigger.monotonic; |
e41e1943 LP |
394 | |
395 | if (base <= 0) | |
36697dc0 | 396 | continue; |
871d7de4 | 397 | |
36697dc0 | 398 | break; |
871d7de4 | 399 | |
36697dc0 LP |
400 | default: |
401 | assert_not_reached("Unknown timer base"); | |
402 | } | |
871d7de4 | 403 | |
dedabea4 LP |
404 | if (t->wake_system) |
405 | base = monotonic_to_boottime(base); | |
406 | ||
36697dc0 LP |
407 | v->next_elapse = base + v->value; |
408 | ||
dedabea4 | 409 | if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { |
e41e1943 | 410 | /* This is a one time trigger, disable it now */ |
36697dc0 LP |
411 | v->disabled = true; |
412 | continue; | |
413 | } | |
414 | ||
415 | if (!found_monotonic) | |
dedabea4 | 416 | t->next_elapse_monotonic_or_boottime = v->next_elapse; |
36697dc0 | 417 | else |
dedabea4 | 418 | t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse); |
36697dc0 LP |
419 | |
420 | found_monotonic = true; | |
421 | } | |
871d7de4 LP |
422 | } |
423 | ||
36697dc0 | 424 | if (!found_monotonic && !found_realtime) { |
79008bdd | 425 | log_unit_debug(UNIT(t)->id, "%s: Timer is elapsed.", UNIT(t)->id); |
871d7de4 LP |
426 | timer_set_state(t, TIMER_ELAPSED); |
427 | return; | |
428 | } | |
429 | ||
36697dc0 LP |
430 | if (found_monotonic) { |
431 | char buf[FORMAT_TIMESPAN_MAX]; | |
dedabea4 | 432 | |
79008bdd | 433 | log_unit_debug(UNIT(t)->id, "%s: Monotonic timer elapses in %s.", |
dedabea4 LP |
434 | UNIT(t)->id, |
435 | format_timespan(buf, sizeof(buf), t->next_elapse_monotonic_or_boottime > ts_monotonic ? t->next_elapse_monotonic_or_boottime - ts_monotonic : 0, 0)); | |
871d7de4 | 436 | |
718db961 | 437 | if (t->monotonic_event_source) { |
dedabea4 | 438 | r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime); |
718db961 LP |
439 | if (r < 0) |
440 | goto fail; | |
441 | ||
442 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT); | |
443 | } else | |
6a0f1f6d LP |
444 | r = sd_event_add_time( |
445 | UNIT(t)->manager->event, | |
446 | &t->monotonic_event_source, | |
dedabea4 LP |
447 | t->wake_system ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC, |
448 | t->next_elapse_monotonic_or_boottime, t->accuracy_usec, | |
6a0f1f6d | 449 | timer_dispatch, t); |
36697dc0 LP |
450 | if (r < 0) |
451 | goto fail; | |
718db961 LP |
452 | |
453 | } else if (t->monotonic_event_source) { | |
718db961 | 454 | |
06642d17 | 455 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_OFF); |
718db961 LP |
456 | if (r < 0) |
457 | goto fail; | |
458 | } | |
36697dc0 LP |
459 | |
460 | if (found_realtime) { | |
461 | char buf[FORMAT_TIMESTAMP_MAX]; | |
79008bdd | 462 | log_unit_debug(UNIT(t)->id, "%s: Realtime timer elapses at %s.", UNIT(t)->id, format_timestamp(buf, sizeof(buf), t->next_elapse_realtime)); |
36697dc0 | 463 | |
718db961 LP |
464 | if (t->realtime_event_source) { |
465 | r = sd_event_source_set_time(t->realtime_event_source, t->next_elapse_realtime); | |
466 | if (r < 0) | |
467 | goto fail; | |
468 | ||
469 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_ONESHOT); | |
470 | } else | |
6a0f1f6d LP |
471 | r = sd_event_add_time( |
472 | UNIT(t)->manager->event, | |
473 | &t->realtime_event_source, | |
dedabea4 | 474 | t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME, |
6a0f1f6d LP |
475 | t->next_elapse_realtime, t->accuracy_usec, |
476 | timer_dispatch, t); | |
36697dc0 LP |
477 | if (r < 0) |
478 | goto fail; | |
718db961 LP |
479 | |
480 | } else if (t->realtime_event_source) { | |
718db961 | 481 | |
06642d17 | 482 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); |
718db961 LP |
483 | if (r < 0) |
484 | goto fail; | |
485 | } | |
871d7de4 LP |
486 | |
487 | timer_set_state(t, TIMER_WAITING); | |
488 | return; | |
489 | ||
490 | fail: | |
31938a85 | 491 | log_unit_warning_errno(UNIT(t)->id, r, "%s failed to enter waiting state: %m", UNIT(t)->id); |
067d72c9 | 492 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
493 | } |
494 | ||
495 | static void timer_enter_running(Timer *t) { | |
718db961 | 496 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
871d7de4 | 497 | int r; |
398ef8ba | 498 | |
871d7de4 LP |
499 | assert(t); |
500 | ||
ba3e67a7 | 501 | /* Don't start job if we are supposed to go down */ |
31afa0a4 | 502 | if (unit_stop_pending(UNIT(t))) |
ba3e67a7 LP |
503 | return; |
504 | ||
3ecaa09b LP |
505 | r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)), |
506 | JOB_REPLACE, true, &error, NULL); | |
36697dc0 | 507 | if (r < 0) |
871d7de4 LP |
508 | goto fail; |
509 | ||
06642d17 LP |
510 | dual_timestamp_get(&t->last_trigger); |
511 | ||
472fc28f | 512 | if (t->stamp_path) |
fed1e721 | 513 | touch_file(t->stamp_path, true, t->last_trigger.realtime, UID_INVALID, GID_INVALID, 0); |
e41e1943 | 514 | |
871d7de4 LP |
515 | timer_set_state(t, TIMER_RUNNING); |
516 | return; | |
517 | ||
518 | fail: | |
79008bdd | 519 | log_unit_warning(UNIT(t)->id, |
66870f90 | 520 | "%s failed to queue unit startup job: %s", |
718db961 | 521 | UNIT(t)->id, bus_error_message(&error, r)); |
067d72c9 | 522 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
523 | } |
524 | ||
525 | static int timer_start(Unit *u) { | |
526 | Timer *t = TIMER(u); | |
779042e7 | 527 | TimerValue *v; |
871d7de4 LP |
528 | |
529 | assert(t); | |
fdf20a31 | 530 | assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED); |
01f78473 | 531 | |
3ecaa09b | 532 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 533 | return -ENOENT; |
871d7de4 | 534 | |
06642d17 LP |
535 | t->last_trigger = DUAL_TIMESTAMP_NULL; |
536 | ||
779042e7 MC |
537 | /* Reenable all timers that depend on unit activation time */ |
538 | LIST_FOREACH(value, v, t->values) | |
539 | if (v->base == TIMER_ACTIVE) | |
540 | v->disabled = false; | |
541 | ||
06642d17 LP |
542 | if (t->stamp_path) { |
543 | struct stat st; | |
544 | ||
545 | if (stat(t->stamp_path, &st) >= 0) | |
546 | t->last_trigger.realtime = timespec_load(&st.st_atim); | |
472fc28f TB |
547 | else if (errno == ENOENT) |
548 | /* The timer has never run before, | |
549 | * make sure a stamp file exists. | |
550 | */ | |
46bcf492 | 551 | touch_file(t->stamp_path, true, USEC_INFINITY, UID_INVALID, GID_INVALID, 0); |
06642d17 LP |
552 | } |
553 | ||
067d72c9 | 554 | t->result = TIMER_SUCCESS; |
871d7de4 | 555 | timer_enter_waiting(t, true); |
82a2b6bb | 556 | return 1; |
871d7de4 LP |
557 | } |
558 | ||
559 | static int timer_stop(Unit *u) { | |
560 | Timer *t = TIMER(u); | |
561 | ||
562 | assert(t); | |
563 | assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); | |
564 | ||
067d72c9 | 565 | timer_enter_dead(t, TIMER_SUCCESS); |
82a2b6bb | 566 | return 1; |
871d7de4 LP |
567 | } |
568 | ||
569 | static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { | |
570 | Timer *t = TIMER(u); | |
571 | ||
572 | assert(u); | |
573 | assert(f); | |
574 | assert(fds); | |
575 | ||
576 | unit_serialize_item(u, f, "state", timer_state_to_string(t->state)); | |
067d72c9 | 577 | unit_serialize_item(u, f, "result", timer_result_to_string(t->result)); |
871d7de4 | 578 | |
06642d17 LP |
579 | if (t->last_trigger.realtime > 0) |
580 | unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime); | |
581 | ||
582 | if (t->last_trigger.monotonic > 0) | |
583 | unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic); | |
584 | ||
871d7de4 LP |
585 | return 0; |
586 | } | |
587 | ||
588 | static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
589 | Timer *t = TIMER(u); | |
06642d17 | 590 | int r; |
871d7de4 LP |
591 | |
592 | assert(u); | |
593 | assert(key); | |
594 | assert(value); | |
595 | assert(fds); | |
596 | ||
597 | if (streq(key, "state")) { | |
598 | TimerState state; | |
599 | ||
36697dc0 LP |
600 | state = timer_state_from_string(value); |
601 | if (state < 0) | |
79008bdd | 602 | log_unit_debug(u->id, "Failed to parse state value %s", value); |
871d7de4 LP |
603 | else |
604 | t->deserialized_state = state; | |
067d72c9 LP |
605 | } else if (streq(key, "result")) { |
606 | TimerResult f; | |
607 | ||
608 | f = timer_result_from_string(value); | |
609 | if (f < 0) | |
79008bdd | 610 | log_unit_debug(u->id, "Failed to parse result value %s", value); |
067d72c9 LP |
611 | else if (f != TIMER_SUCCESS) |
612 | t->result = f; | |
06642d17 LP |
613 | } else if (streq(key, "last-trigger-realtime")) { |
614 | ||
615 | r = safe_atou64(value, &t->last_trigger.realtime); | |
616 | if (r < 0) | |
79008bdd | 617 | log_unit_debug(u->id, "Failed to parse last-trigger-realtime value %s", value); |
06642d17 LP |
618 | |
619 | } else if (streq(key, "last-trigger-monotonic")) { | |
620 | ||
621 | r = safe_atou64(value, &t->last_trigger.monotonic); | |
622 | if (r < 0) | |
79008bdd | 623 | log_unit_debug(u->id, "Failed to parse last-trigger-monotonic value %s", value); |
067d72c9 | 624 | |
871d7de4 | 625 | } else |
79008bdd | 626 | log_unit_debug(u->id, "Unknown serialization key '%s'", key); |
871d7de4 LP |
627 | |
628 | return 0; | |
034c6ed7 LP |
629 | } |
630 | ||
44a6b1b6 | 631 | _pure_ static UnitActiveState timer_active_state(Unit *u) { |
871d7de4 LP |
632 | assert(u); |
633 | ||
634 | return state_translation_table[TIMER(u)->state]; | |
635 | } | |
636 | ||
44a6b1b6 | 637 | _pure_ static const char *timer_sub_state_to_string(Unit *u) { |
871d7de4 LP |
638 | assert(u); |
639 | ||
640 | return timer_state_to_string(TIMER(u)->state); | |
641 | } | |
642 | ||
718db961 LP |
643 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) { |
644 | Timer *t = TIMER(userdata); | |
871d7de4 LP |
645 | |
646 | assert(t); | |
5cb5a6ff | 647 | |
871d7de4 | 648 | if (t->state != TIMER_WAITING) |
718db961 | 649 | return 0; |
5cb5a6ff | 650 | |
79008bdd | 651 | log_unit_debug(UNIT(t)->id, "Timer elapsed on %s", UNIT(t)->id); |
871d7de4 | 652 | timer_enter_running(t); |
718db961 | 653 | return 0; |
5cb5a6ff LP |
654 | } |
655 | ||
3ecaa09b LP |
656 | static void timer_trigger_notify(Unit *u, Unit *other) { |
657 | Timer *t = TIMER(u); | |
658 | TimerValue *v; | |
871d7de4 | 659 | |
3ecaa09b LP |
660 | assert(u); |
661 | assert(other); | |
871d7de4 | 662 | |
3ecaa09b LP |
663 | if (other->load_state != UNIT_LOADED) |
664 | return; | |
871d7de4 | 665 | |
3ecaa09b LP |
666 | /* Reenable all timers that depend on unit state */ |
667 | LIST_FOREACH(value, v, t->values) | |
668 | if (v->base == TIMER_UNIT_ACTIVE || | |
669 | v->base == TIMER_UNIT_INACTIVE) | |
670 | v->disabled = false; | |
01f78473 | 671 | |
3ecaa09b | 672 | switch (t->state) { |
871d7de4 | 673 | |
3ecaa09b LP |
674 | case TIMER_WAITING: |
675 | case TIMER_ELAPSED: | |
871d7de4 | 676 | |
3ecaa09b LP |
677 | /* Recalculate sleep time */ |
678 | timer_enter_waiting(t, false); | |
679 | break; | |
871d7de4 | 680 | |
3ecaa09b | 681 | case TIMER_RUNNING: |
871d7de4 | 682 | |
3ecaa09b | 683 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) { |
79008bdd | 684 | log_unit_debug(UNIT(t)->id, "%s got notified about unit deactivation.", UNIT(t)->id); |
871d7de4 | 685 | timer_enter_waiting(t, false); |
3ecaa09b LP |
686 | } |
687 | break; | |
871d7de4 | 688 | |
3ecaa09b LP |
689 | case TIMER_DEAD: |
690 | case TIMER_FAILED: | |
691 | break; | |
871d7de4 | 692 | |
3ecaa09b LP |
693 | default: |
694 | assert_not_reached("Unknown timer state"); | |
871d7de4 | 695 | } |
871d7de4 LP |
696 | } |
697 | ||
fdf20a31 | 698 | static void timer_reset_failed(Unit *u) { |
5632e374 LP |
699 | Timer *t = TIMER(u); |
700 | ||
701 | assert(t); | |
702 | ||
fdf20a31 | 703 | if (t->state == TIMER_FAILED) |
5632e374 LP |
704 | timer_set_state(t, TIMER_DEAD); |
705 | ||
067d72c9 | 706 | t->result = TIMER_SUCCESS; |
5632e374 LP |
707 | } |
708 | ||
8742514c LP |
709 | static void timer_time_change(Unit *u) { |
710 | Timer *t = TIMER(u); | |
711 | ||
712 | assert(u); | |
713 | ||
714 | if (t->state != TIMER_WAITING) | |
715 | return; | |
716 | ||
79008bdd | 717 | log_unit_debug(u->id, "%s: time change, recalculating next elapse.", u->id); |
8742514c LP |
718 | timer_enter_waiting(t, false); |
719 | } | |
720 | ||
871d7de4 LP |
721 | static const char* const timer_state_table[_TIMER_STATE_MAX] = { |
722 | [TIMER_DEAD] = "dead", | |
723 | [TIMER_WAITING] = "waiting", | |
724 | [TIMER_RUNNING] = "running", | |
725 | [TIMER_ELAPSED] = "elapsed", | |
fdf20a31 | 726 | [TIMER_FAILED] = "failed" |
871d7de4 LP |
727 | }; |
728 | ||
729 | DEFINE_STRING_TABLE_LOOKUP(timer_state, TimerState); | |
730 | ||
731 | static const char* const timer_base_table[_TIMER_BASE_MAX] = { | |
03fae018 LP |
732 | [TIMER_ACTIVE] = "OnActiveSec", |
733 | [TIMER_BOOT] = "OnBootSec", | |
734 | [TIMER_STARTUP] = "OnStartupSec", | |
735 | [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", | |
36697dc0 LP |
736 | [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", |
737 | [TIMER_CALENDAR] = "OnCalendar" | |
871d7de4 LP |
738 | }; |
739 | ||
740 | DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); | |
741 | ||
067d72c9 LP |
742 | static const char* const timer_result_table[_TIMER_RESULT_MAX] = { |
743 | [TIMER_SUCCESS] = "success", | |
744 | [TIMER_FAILURE_RESOURCES] = "resources" | |
745 | }; | |
746 | ||
747 | DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); | |
748 | ||
87f0e418 | 749 | const UnitVTable timer_vtable = { |
7d17cfbc | 750 | .object_size = sizeof(Timer), |
718db961 | 751 | |
f975e971 LP |
752 | .sections = |
753 | "Unit\0" | |
754 | "Timer\0" | |
755 | "Install\0", | |
d8a812d1 | 756 | .private_section = "Timer", |
5cb5a6ff | 757 | |
871d7de4 | 758 | .init = timer_init, |
034c6ed7 | 759 | .done = timer_done, |
871d7de4 LP |
760 | .load = timer_load, |
761 | ||
762 | .coldplug = timer_coldplug, | |
763 | ||
764 | .dump = timer_dump, | |
765 | ||
766 | .start = timer_start, | |
767 | .stop = timer_stop, | |
768 | ||
769 | .serialize = timer_serialize, | |
770 | .deserialize_item = timer_deserialize_item, | |
771 | ||
772 | .active_state = timer_active_state, | |
773 | .sub_state_to_string = timer_sub_state_to_string, | |
774 | ||
3ecaa09b LP |
775 | .trigger_notify = timer_trigger_notify, |
776 | ||
fdf20a31 | 777 | .reset_failed = timer_reset_failed, |
8742514c | 778 | .time_change = timer_time_change, |
5632e374 | 779 | |
c4e2ceae | 780 | .bus_interface = "org.freedesktop.systemd1.Timer", |
718db961 | 781 | .bus_vtable = bus_timer_vtable, |
d8a812d1 WC |
782 | .bus_set_property = bus_timer_set_property, |
783 | ||
784 | .can_transient = true, | |
5cb5a6ff | 785 | }; |