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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 | ||
be847e82 | 270 | static int timer_coldplug(Unit *u) { |
871d7de4 LP |
271 | Timer *t = TIMER(u); |
272 | ||
273 | assert(t); | |
274 | assert(t->state == TIMER_DEAD); | |
275 | ||
276 | if (t->deserialized_state != t->state) { | |
277 | ||
be847e82 LP |
278 | if (t->deserialized_state == TIMER_WAITING) |
279 | timer_enter_waiting(t, false); | |
280 | else | |
871d7de4 LP |
281 | timer_set_state(t, t->deserialized_state); |
282 | } | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
067d72c9 | 287 | static void timer_enter_dead(Timer *t, TimerResult f) { |
871d7de4 LP |
288 | assert(t); |
289 | ||
067d72c9 LP |
290 | if (f != TIMER_SUCCESS) |
291 | t->result = f; | |
871d7de4 | 292 | |
067d72c9 | 293 | timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); |
871d7de4 LP |
294 | } |
295 | ||
dedabea4 LP |
296 | static usec_t monotonic_to_boottime(usec_t t) { |
297 | usec_t a, b; | |
298 | ||
299 | if (t <= 0) | |
300 | return 0; | |
301 | ||
302 | a = now(CLOCK_BOOTTIME); | |
303 | b = now(CLOCK_MONOTONIC); | |
304 | ||
305 | if (t + a > b) | |
306 | return t + a - b; | |
307 | else | |
308 | return 0; | |
309 | } | |
310 | ||
871d7de4 | 311 | static void timer_enter_waiting(Timer *t, bool initial) { |
36697dc0 | 312 | bool found_monotonic = false, found_realtime = false; |
dedabea4 LP |
313 | usec_t ts_realtime, ts_monotonic; |
314 | usec_t base = 0; | |
315 | TimerValue *v; | |
871d7de4 LP |
316 | int r; |
317 | ||
dedabea4 LP |
318 | /* If we shall wake the system we use the boottime clock |
319 | * rather than the monotonic clock. */ | |
320 | ||
321 | ts_realtime = now(CLOCK_REALTIME); | |
322 | ts_monotonic = now(t->wake_system ? CLOCK_BOOTTIME : CLOCK_MONOTONIC); | |
323 | t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0; | |
871d7de4 LP |
324 | |
325 | LIST_FOREACH(value, v, t->values) { | |
326 | ||
327 | if (v->disabled) | |
328 | continue; | |
329 | ||
36697dc0 | 330 | if (v->base == TIMER_CALENDAR) { |
06642d17 LP |
331 | usec_t b; |
332 | ||
333 | /* If we know the last time this was | |
334 | * triggered, schedule the job based relative | |
335 | * to that. If we don't just start from | |
336 | * now. */ | |
36697dc0 | 337 | |
dedabea4 | 338 | b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime; |
06642d17 LP |
339 | |
340 | r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); | |
36697dc0 LP |
341 | if (r < 0) |
342 | continue; | |
343 | ||
36697dc0 LP |
344 | if (!found_realtime) |
345 | t->next_elapse_realtime = v->next_elapse; | |
10717a1a | 346 | else |
36697dc0 | 347 | t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); |
871d7de4 | 348 | |
36697dc0 | 349 | found_realtime = true; |
871d7de4 | 350 | |
36697dc0 LP |
351 | } else { |
352 | switch (v->base) { | |
871d7de4 | 353 | |
36697dc0 LP |
354 | case TIMER_ACTIVE: |
355 | if (state_translation_table[t->state] == UNIT_ACTIVE) | |
356 | base = UNIT(t)->inactive_exit_timestamp.monotonic; | |
357 | else | |
dedabea4 | 358 | base = ts_monotonic; |
36697dc0 | 359 | break; |
871d7de4 | 360 | |
36697dc0 LP |
361 | case TIMER_BOOT: |
362 | /* CLOCK_MONOTONIC equals the uptime on Linux */ | |
363 | base = 0; | |
364 | break; | |
871d7de4 | 365 | |
36697dc0 LP |
366 | case TIMER_STARTUP: |
367 | base = UNIT(t)->manager->userspace_timestamp.monotonic; | |
368 | break; | |
871d7de4 | 369 | |
36697dc0 | 370 | case TIMER_UNIT_ACTIVE: |
871d7de4 | 371 | |
e41e1943 LP |
372 | base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic; |
373 | ||
374 | if (base <= 0) | |
06642d17 | 375 | base = t->last_trigger.monotonic; |
e41e1943 LP |
376 | |
377 | if (base <= 0) | |
36697dc0 | 378 | continue; |
871d7de4 | 379 | |
36697dc0 | 380 | break; |
871d7de4 | 381 | |
36697dc0 | 382 | case TIMER_UNIT_INACTIVE: |
871d7de4 | 383 | |
e41e1943 LP |
384 | base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic; |
385 | ||
386 | if (base <= 0) | |
06642d17 | 387 | base = t->last_trigger.monotonic; |
e41e1943 LP |
388 | |
389 | if (base <= 0) | |
36697dc0 | 390 | continue; |
871d7de4 | 391 | |
36697dc0 | 392 | break; |
871d7de4 | 393 | |
36697dc0 LP |
394 | default: |
395 | assert_not_reached("Unknown timer base"); | |
396 | } | |
871d7de4 | 397 | |
dedabea4 LP |
398 | if (t->wake_system) |
399 | base = monotonic_to_boottime(base); | |
400 | ||
36697dc0 LP |
401 | v->next_elapse = base + v->value; |
402 | ||
dedabea4 | 403 | if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { |
e41e1943 | 404 | /* This is a one time trigger, disable it now */ |
36697dc0 LP |
405 | v->disabled = true; |
406 | continue; | |
407 | } | |
408 | ||
409 | if (!found_monotonic) | |
dedabea4 | 410 | t->next_elapse_monotonic_or_boottime = v->next_elapse; |
36697dc0 | 411 | else |
dedabea4 | 412 | t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse); |
36697dc0 LP |
413 | |
414 | found_monotonic = true; | |
415 | } | |
871d7de4 LP |
416 | } |
417 | ||
36697dc0 | 418 | if (!found_monotonic && !found_realtime) { |
79008bdd | 419 | log_unit_debug(UNIT(t)->id, "%s: Timer is elapsed.", UNIT(t)->id); |
871d7de4 LP |
420 | timer_set_state(t, TIMER_ELAPSED); |
421 | return; | |
422 | } | |
423 | ||
36697dc0 LP |
424 | if (found_monotonic) { |
425 | char buf[FORMAT_TIMESPAN_MAX]; | |
dedabea4 | 426 | |
79008bdd | 427 | log_unit_debug(UNIT(t)->id, "%s: Monotonic timer elapses in %s.", |
dedabea4 LP |
428 | UNIT(t)->id, |
429 | format_timespan(buf, sizeof(buf), t->next_elapse_monotonic_or_boottime > ts_monotonic ? t->next_elapse_monotonic_or_boottime - ts_monotonic : 0, 0)); | |
871d7de4 | 430 | |
718db961 | 431 | if (t->monotonic_event_source) { |
dedabea4 | 432 | r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime); |
718db961 LP |
433 | if (r < 0) |
434 | goto fail; | |
435 | ||
436 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT); | |
437 | } else | |
6a0f1f6d LP |
438 | r = sd_event_add_time( |
439 | UNIT(t)->manager->event, | |
440 | &t->monotonic_event_source, | |
dedabea4 LP |
441 | t->wake_system ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC, |
442 | t->next_elapse_monotonic_or_boottime, t->accuracy_usec, | |
6a0f1f6d | 443 | timer_dispatch, t); |
36697dc0 LP |
444 | if (r < 0) |
445 | goto fail; | |
718db961 LP |
446 | |
447 | } else if (t->monotonic_event_source) { | |
718db961 | 448 | |
06642d17 | 449 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_OFF); |
718db961 LP |
450 | if (r < 0) |
451 | goto fail; | |
452 | } | |
36697dc0 LP |
453 | |
454 | if (found_realtime) { | |
455 | char buf[FORMAT_TIMESTAMP_MAX]; | |
79008bdd | 456 | 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 | 457 | |
718db961 LP |
458 | if (t->realtime_event_source) { |
459 | r = sd_event_source_set_time(t->realtime_event_source, t->next_elapse_realtime); | |
460 | if (r < 0) | |
461 | goto fail; | |
462 | ||
463 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_ONESHOT); | |
464 | } else | |
6a0f1f6d LP |
465 | r = sd_event_add_time( |
466 | UNIT(t)->manager->event, | |
467 | &t->realtime_event_source, | |
dedabea4 | 468 | t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME, |
6a0f1f6d LP |
469 | t->next_elapse_realtime, t->accuracy_usec, |
470 | timer_dispatch, t); | |
36697dc0 LP |
471 | if (r < 0) |
472 | goto fail; | |
718db961 LP |
473 | |
474 | } else if (t->realtime_event_source) { | |
718db961 | 475 | |
06642d17 | 476 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); |
718db961 LP |
477 | if (r < 0) |
478 | goto fail; | |
479 | } | |
871d7de4 LP |
480 | |
481 | timer_set_state(t, TIMER_WAITING); | |
482 | return; | |
483 | ||
484 | fail: | |
31938a85 | 485 | log_unit_warning_errno(UNIT(t)->id, r, "%s failed to enter waiting state: %m", UNIT(t)->id); |
067d72c9 | 486 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
487 | } |
488 | ||
489 | static void timer_enter_running(Timer *t) { | |
718db961 | 490 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
871d7de4 | 491 | int r; |
398ef8ba | 492 | |
871d7de4 LP |
493 | assert(t); |
494 | ||
ba3e67a7 | 495 | /* Don't start job if we are supposed to go down */ |
31afa0a4 | 496 | if (unit_stop_pending(UNIT(t))) |
ba3e67a7 LP |
497 | return; |
498 | ||
3ecaa09b LP |
499 | r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)), |
500 | JOB_REPLACE, true, &error, NULL); | |
36697dc0 | 501 | if (r < 0) |
871d7de4 LP |
502 | goto fail; |
503 | ||
06642d17 LP |
504 | dual_timestamp_get(&t->last_trigger); |
505 | ||
472fc28f | 506 | if (t->stamp_path) |
fed1e721 | 507 | touch_file(t->stamp_path, true, t->last_trigger.realtime, UID_INVALID, GID_INVALID, 0); |
e41e1943 | 508 | |
871d7de4 LP |
509 | timer_set_state(t, TIMER_RUNNING); |
510 | return; | |
511 | ||
512 | fail: | |
79008bdd | 513 | log_unit_warning(UNIT(t)->id, |
66870f90 | 514 | "%s failed to queue unit startup job: %s", |
718db961 | 515 | UNIT(t)->id, bus_error_message(&error, r)); |
067d72c9 | 516 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
517 | } |
518 | ||
519 | static int timer_start(Unit *u) { | |
520 | Timer *t = TIMER(u); | |
779042e7 | 521 | TimerValue *v; |
871d7de4 LP |
522 | |
523 | assert(t); | |
fdf20a31 | 524 | assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED); |
01f78473 | 525 | |
3ecaa09b | 526 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 527 | return -ENOENT; |
871d7de4 | 528 | |
06642d17 LP |
529 | t->last_trigger = DUAL_TIMESTAMP_NULL; |
530 | ||
779042e7 MC |
531 | /* Reenable all timers that depend on unit activation time */ |
532 | LIST_FOREACH(value, v, t->values) | |
533 | if (v->base == TIMER_ACTIVE) | |
534 | v->disabled = false; | |
535 | ||
06642d17 LP |
536 | if (t->stamp_path) { |
537 | struct stat st; | |
538 | ||
539 | if (stat(t->stamp_path, &st) >= 0) | |
540 | t->last_trigger.realtime = timespec_load(&st.st_atim); | |
472fc28f TB |
541 | else if (errno == ENOENT) |
542 | /* The timer has never run before, | |
543 | * make sure a stamp file exists. | |
544 | */ | |
46bcf492 | 545 | touch_file(t->stamp_path, true, USEC_INFINITY, UID_INVALID, GID_INVALID, 0); |
06642d17 LP |
546 | } |
547 | ||
067d72c9 | 548 | t->result = TIMER_SUCCESS; |
871d7de4 | 549 | timer_enter_waiting(t, true); |
82a2b6bb | 550 | return 1; |
871d7de4 LP |
551 | } |
552 | ||
553 | static int timer_stop(Unit *u) { | |
554 | Timer *t = TIMER(u); | |
555 | ||
556 | assert(t); | |
557 | assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); | |
558 | ||
067d72c9 | 559 | timer_enter_dead(t, TIMER_SUCCESS); |
82a2b6bb | 560 | return 1; |
871d7de4 LP |
561 | } |
562 | ||
563 | static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { | |
564 | Timer *t = TIMER(u); | |
565 | ||
566 | assert(u); | |
567 | assert(f); | |
568 | assert(fds); | |
569 | ||
570 | unit_serialize_item(u, f, "state", timer_state_to_string(t->state)); | |
067d72c9 | 571 | unit_serialize_item(u, f, "result", timer_result_to_string(t->result)); |
871d7de4 | 572 | |
06642d17 LP |
573 | if (t->last_trigger.realtime > 0) |
574 | unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime); | |
575 | ||
576 | if (t->last_trigger.monotonic > 0) | |
577 | unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic); | |
578 | ||
871d7de4 LP |
579 | return 0; |
580 | } | |
581 | ||
582 | static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
583 | Timer *t = TIMER(u); | |
06642d17 | 584 | int r; |
871d7de4 LP |
585 | |
586 | assert(u); | |
587 | assert(key); | |
588 | assert(value); | |
589 | assert(fds); | |
590 | ||
591 | if (streq(key, "state")) { | |
592 | TimerState state; | |
593 | ||
36697dc0 LP |
594 | state = timer_state_from_string(value); |
595 | if (state < 0) | |
79008bdd | 596 | log_unit_debug(u->id, "Failed to parse state value %s", value); |
871d7de4 LP |
597 | else |
598 | t->deserialized_state = state; | |
067d72c9 LP |
599 | } else if (streq(key, "result")) { |
600 | TimerResult f; | |
601 | ||
602 | f = timer_result_from_string(value); | |
603 | if (f < 0) | |
79008bdd | 604 | log_unit_debug(u->id, "Failed to parse result value %s", value); |
067d72c9 LP |
605 | else if (f != TIMER_SUCCESS) |
606 | t->result = f; | |
06642d17 LP |
607 | } else if (streq(key, "last-trigger-realtime")) { |
608 | ||
609 | r = safe_atou64(value, &t->last_trigger.realtime); | |
610 | if (r < 0) | |
79008bdd | 611 | log_unit_debug(u->id, "Failed to parse last-trigger-realtime value %s", value); |
06642d17 LP |
612 | |
613 | } else if (streq(key, "last-trigger-monotonic")) { | |
614 | ||
615 | r = safe_atou64(value, &t->last_trigger.monotonic); | |
616 | if (r < 0) | |
79008bdd | 617 | log_unit_debug(u->id, "Failed to parse last-trigger-monotonic value %s", value); |
067d72c9 | 618 | |
871d7de4 | 619 | } else |
79008bdd | 620 | log_unit_debug(u->id, "Unknown serialization key '%s'", key); |
871d7de4 LP |
621 | |
622 | return 0; | |
034c6ed7 LP |
623 | } |
624 | ||
44a6b1b6 | 625 | _pure_ static UnitActiveState timer_active_state(Unit *u) { |
871d7de4 LP |
626 | assert(u); |
627 | ||
628 | return state_translation_table[TIMER(u)->state]; | |
629 | } | |
630 | ||
44a6b1b6 | 631 | _pure_ static const char *timer_sub_state_to_string(Unit *u) { |
871d7de4 LP |
632 | assert(u); |
633 | ||
634 | return timer_state_to_string(TIMER(u)->state); | |
635 | } | |
636 | ||
718db961 LP |
637 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) { |
638 | Timer *t = TIMER(userdata); | |
871d7de4 LP |
639 | |
640 | assert(t); | |
5cb5a6ff | 641 | |
871d7de4 | 642 | if (t->state != TIMER_WAITING) |
718db961 | 643 | return 0; |
5cb5a6ff | 644 | |
79008bdd | 645 | log_unit_debug(UNIT(t)->id, "Timer elapsed on %s", UNIT(t)->id); |
871d7de4 | 646 | timer_enter_running(t); |
718db961 | 647 | return 0; |
5cb5a6ff LP |
648 | } |
649 | ||
3ecaa09b LP |
650 | static void timer_trigger_notify(Unit *u, Unit *other) { |
651 | Timer *t = TIMER(u); | |
652 | TimerValue *v; | |
871d7de4 | 653 | |
3ecaa09b LP |
654 | assert(u); |
655 | assert(other); | |
871d7de4 | 656 | |
3ecaa09b LP |
657 | if (other->load_state != UNIT_LOADED) |
658 | return; | |
871d7de4 | 659 | |
3ecaa09b LP |
660 | /* Reenable all timers that depend on unit state */ |
661 | LIST_FOREACH(value, v, t->values) | |
662 | if (v->base == TIMER_UNIT_ACTIVE || | |
663 | v->base == TIMER_UNIT_INACTIVE) | |
664 | v->disabled = false; | |
01f78473 | 665 | |
3ecaa09b | 666 | switch (t->state) { |
871d7de4 | 667 | |
3ecaa09b LP |
668 | case TIMER_WAITING: |
669 | case TIMER_ELAPSED: | |
871d7de4 | 670 | |
3ecaa09b LP |
671 | /* Recalculate sleep time */ |
672 | timer_enter_waiting(t, false); | |
673 | break; | |
871d7de4 | 674 | |
3ecaa09b | 675 | case TIMER_RUNNING: |
871d7de4 | 676 | |
3ecaa09b | 677 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) { |
79008bdd | 678 | log_unit_debug(UNIT(t)->id, "%s got notified about unit deactivation.", UNIT(t)->id); |
871d7de4 | 679 | timer_enter_waiting(t, false); |
3ecaa09b LP |
680 | } |
681 | break; | |
871d7de4 | 682 | |
3ecaa09b LP |
683 | case TIMER_DEAD: |
684 | case TIMER_FAILED: | |
685 | break; | |
871d7de4 | 686 | |
3ecaa09b LP |
687 | default: |
688 | assert_not_reached("Unknown timer state"); | |
871d7de4 | 689 | } |
871d7de4 LP |
690 | } |
691 | ||
fdf20a31 | 692 | static void timer_reset_failed(Unit *u) { |
5632e374 LP |
693 | Timer *t = TIMER(u); |
694 | ||
695 | assert(t); | |
696 | ||
fdf20a31 | 697 | if (t->state == TIMER_FAILED) |
5632e374 LP |
698 | timer_set_state(t, TIMER_DEAD); |
699 | ||
067d72c9 | 700 | t->result = TIMER_SUCCESS; |
5632e374 LP |
701 | } |
702 | ||
8742514c LP |
703 | static void timer_time_change(Unit *u) { |
704 | Timer *t = TIMER(u); | |
705 | ||
706 | assert(u); | |
707 | ||
708 | if (t->state != TIMER_WAITING) | |
709 | return; | |
710 | ||
79008bdd | 711 | log_unit_debug(u->id, "%s: time change, recalculating next elapse.", u->id); |
8742514c LP |
712 | timer_enter_waiting(t, false); |
713 | } | |
714 | ||
871d7de4 LP |
715 | static const char* const timer_state_table[_TIMER_STATE_MAX] = { |
716 | [TIMER_DEAD] = "dead", | |
717 | [TIMER_WAITING] = "waiting", | |
718 | [TIMER_RUNNING] = "running", | |
719 | [TIMER_ELAPSED] = "elapsed", | |
fdf20a31 | 720 | [TIMER_FAILED] = "failed" |
871d7de4 LP |
721 | }; |
722 | ||
723 | DEFINE_STRING_TABLE_LOOKUP(timer_state, TimerState); | |
724 | ||
725 | static const char* const timer_base_table[_TIMER_BASE_MAX] = { | |
03fae018 LP |
726 | [TIMER_ACTIVE] = "OnActiveSec", |
727 | [TIMER_BOOT] = "OnBootSec", | |
728 | [TIMER_STARTUP] = "OnStartupSec", | |
729 | [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", | |
36697dc0 LP |
730 | [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", |
731 | [TIMER_CALENDAR] = "OnCalendar" | |
871d7de4 LP |
732 | }; |
733 | ||
734 | DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); | |
735 | ||
067d72c9 LP |
736 | static const char* const timer_result_table[_TIMER_RESULT_MAX] = { |
737 | [TIMER_SUCCESS] = "success", | |
738 | [TIMER_FAILURE_RESOURCES] = "resources" | |
739 | }; | |
740 | ||
741 | DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); | |
742 | ||
87f0e418 | 743 | const UnitVTable timer_vtable = { |
7d17cfbc | 744 | .object_size = sizeof(Timer), |
718db961 | 745 | |
f975e971 LP |
746 | .sections = |
747 | "Unit\0" | |
748 | "Timer\0" | |
749 | "Install\0", | |
d8a812d1 | 750 | .private_section = "Timer", |
5cb5a6ff | 751 | |
871d7de4 | 752 | .init = timer_init, |
034c6ed7 | 753 | .done = timer_done, |
871d7de4 LP |
754 | .load = timer_load, |
755 | ||
756 | .coldplug = timer_coldplug, | |
757 | ||
758 | .dump = timer_dump, | |
759 | ||
760 | .start = timer_start, | |
761 | .stop = timer_stop, | |
762 | ||
763 | .serialize = timer_serialize, | |
764 | .deserialize_item = timer_deserialize_item, | |
765 | ||
766 | .active_state = timer_active_state, | |
767 | .sub_state_to_string = timer_sub_state_to_string, | |
768 | ||
3ecaa09b LP |
769 | .trigger_notify = timer_trigger_notify, |
770 | ||
fdf20a31 | 771 | .reset_failed = timer_reset_failed, |
8742514c | 772 | .time_change = timer_time_change, |
5632e374 | 773 | |
c4e2ceae | 774 | .bus_interface = "org.freedesktop.systemd1.Timer", |
718db961 | 775 | .bus_vtable = bus_timer_vtable, |
d8a812d1 WC |
776 | .bus_set_property = bus_timer_set_property, |
777 | ||
778 | .can_transient = true, | |
5cb5a6ff | 779 | }; |