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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 | ||
07630cea LP |
24 | #include "bus-error.h" |
25 | #include "bus-util.h" | |
871d7de4 | 26 | #include "dbus-timer.h" |
a40eb732 | 27 | #include "special.h" |
07630cea | 28 | #include "string-util.h" |
b1d4f8e1 | 29 | #include "timer.h" |
07630cea LP |
30 | #include "unit-name.h" |
31 | #include "unit.h" | |
b1d4f8e1 | 32 | #include "user-util.h" |
871d7de4 LP |
33 | |
34 | static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = { | |
35 | [TIMER_DEAD] = UNIT_INACTIVE, | |
36 | [TIMER_WAITING] = UNIT_ACTIVE, | |
37 | [TIMER_RUNNING] = UNIT_ACTIVE, | |
38 | [TIMER_ELAPSED] = UNIT_ACTIVE, | |
fdf20a31 | 39 | [TIMER_FAILED] = UNIT_FAILED |
871d7de4 LP |
40 | }; |
41 | ||
718db961 LP |
42 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata); |
43 | ||
871d7de4 LP |
44 | static void timer_init(Unit *u) { |
45 | Timer *t = TIMER(u); | |
46 | ||
47 | assert(u); | |
ac155bb8 | 48 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 49 | |
3a43da28 KS |
50 | t->next_elapse_monotonic_or_boottime = USEC_INFINITY; |
51 | t->next_elapse_realtime = USEC_INFINITY; | |
bd8f585b | 52 | t->accuracy_usec = u->manager->default_timer_accuracy_usec; |
871d7de4 | 53 | } |
5cb5a6ff | 54 | |
74051b9b | 55 | void timer_free_values(Timer *t) { |
871d7de4 LP |
56 | TimerValue *v; |
57 | ||
58 | assert(t); | |
59 | ||
60 | while ((v = t->values)) { | |
71fda00f | 61 | LIST_REMOVE(value, t->values, v); |
3e044c49 | 62 | calendar_spec_free(v->calendar_spec); |
871d7de4 LP |
63 | free(v); |
64 | } | |
74051b9b LP |
65 | } |
66 | ||
67 | static void timer_done(Unit *u) { | |
68 | Timer *t = TIMER(u); | |
69 | ||
70 | assert(t); | |
71 | ||
72 | timer_free_values(t); | |
871d7de4 | 73 | |
718db961 LP |
74 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
75 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
06642d17 LP |
76 | |
77 | free(t->stamp_path); | |
871d7de4 LP |
78 | } |
79 | ||
80 | static int timer_verify(Timer *t) { | |
81 | assert(t); | |
82 | ||
1124fe6f | 83 | if (UNIT(t)->load_state != UNIT_LOADED) |
871d7de4 LP |
84 | return 0; |
85 | ||
86 | if (!t->values) { | |
f2341e0a | 87 | log_unit_error(UNIT(t), "Timer unit lacks value setting. Refusing."); |
871d7de4 LP |
88 | return -EINVAL; |
89 | } | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
6c155fe3 LP |
94 | static int timer_add_default_dependencies(Timer *t) { |
95 | int r; | |
19f8d037 | 96 | TimerValue *v; |
6c155fe3 LP |
97 | |
98 | assert(t); | |
99 | ||
e3d84721 LP |
100 | r = unit_add_dependency_by_name(UNIT(t), UNIT_BEFORE, SPECIAL_TIMERS_TARGET, NULL, true); |
101 | if (r < 0) | |
102 | return r; | |
2a77d31d | 103 | |
b2c23da8 | 104 | if (UNIT(t)->manager->running_as == MANAGER_SYSTEM) { |
36697dc0 LP |
105 | r = unit_add_two_dependencies_by_name(UNIT(t), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true); |
106 | if (r < 0) | |
6c155fe3 | 107 | return r; |
19f8d037 TGR |
108 | |
109 | LIST_FOREACH(value, v, t->values) { | |
110 | if (v->base == TIMER_CALENDAR) { | |
111 | r = unit_add_dependency_by_name(UNIT(t), UNIT_AFTER, SPECIAL_TIME_SYNC_TARGET, NULL, true); | |
112 | if (r < 0) | |
113 | return r; | |
114 | break; | |
115 | } | |
116 | } | |
2a77d31d | 117 | } |
6c155fe3 | 118 | |
ead8e478 | 119 | return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
6c155fe3 LP |
120 | } |
121 | ||
06642d17 LP |
122 | static int timer_setup_persistent(Timer *t) { |
123 | int r; | |
124 | ||
125 | assert(t); | |
126 | ||
127 | if (!t->persistent) | |
128 | return 0; | |
129 | ||
b2c23da8 | 130 | if (UNIT(t)->manager->running_as == MANAGER_SYSTEM) { |
06642d17 LP |
131 | |
132 | r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers"); | |
133 | if (r < 0) | |
134 | return r; | |
135 | ||
136 | t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id); | |
137 | } else { | |
138 | const char *e; | |
139 | ||
140 | e = getenv("XDG_DATA_HOME"); | |
141 | if (e) | |
bd34b310 | 142 | t->stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id, NULL); |
06642d17 LP |
143 | else { |
144 | ||
145 | _cleanup_free_ char *h = NULL; | |
146 | ||
147 | r = get_home_dir(&h); | |
23bbb0de | 148 | if (r < 0) |
f2341e0a | 149 | return log_unit_error_errno(UNIT(t), r, "Failed to determine home directory: %m"); |
06642d17 LP |
150 | |
151 | t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL); | |
152 | } | |
153 | } | |
154 | ||
155 | if (!t->stamp_path) | |
156 | return log_oom(); | |
157 | ||
158 | return 0; | |
159 | } | |
160 | ||
871d7de4 LP |
161 | static int timer_load(Unit *u) { |
162 | Timer *t = TIMER(u); | |
163 | int r; | |
164 | ||
165 | assert(u); | |
ac155bb8 | 166 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 167 | |
36697dc0 LP |
168 | r = unit_load_fragment_and_dropin(u); |
169 | if (r < 0) | |
871d7de4 LP |
170 | return r; |
171 | ||
ac155bb8 | 172 | if (u->load_state == UNIT_LOADED) { |
871d7de4 | 173 | |
3ecaa09b | 174 | if (set_isempty(u->dependencies[UNIT_TRIGGERS])) { |
57020a3a LP |
175 | Unit *x; |
176 | ||
177 | r = unit_load_related_unit(u, ".service", &x); | |
178 | if (r < 0) | |
871d7de4 LP |
179 | return r; |
180 | ||
3ecaa09b LP |
181 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
182 | if (r < 0) | |
183 | return r; | |
57020a3a LP |
184 | } |
185 | ||
06642d17 LP |
186 | r = timer_setup_persistent(t); |
187 | if (r < 0) | |
188 | return r; | |
189 | ||
190 | if (u->default_dependencies) { | |
36697dc0 LP |
191 | r = timer_add_default_dependencies(t); |
192 | if (r < 0) | |
a40eb732 | 193 | return r; |
36697dc0 | 194 | } |
871d7de4 LP |
195 | } |
196 | ||
197 | return timer_verify(t); | |
198 | } | |
199 | ||
200 | static void timer_dump(Unit *u, FILE *f, const char *prefix) { | |
9f5eb56a | 201 | char buf[FORMAT_TIMESPAN_MAX]; |
871d7de4 | 202 | Timer *t = TIMER(u); |
3ecaa09b | 203 | Unit *trigger; |
871d7de4 | 204 | TimerValue *v; |
034c6ed7 | 205 | |
3ecaa09b LP |
206 | trigger = UNIT_TRIGGER(u); |
207 | ||
871d7de4 LP |
208 | fprintf(f, |
209 | "%sTimer State: %s\n" | |
067d72c9 | 210 | "%sResult: %s\n" |
9f5eb56a | 211 | "%sUnit: %s\n" |
dedabea4 LP |
212 | "%sPersistent: %s\n" |
213 | "%sWakeSystem: %s\n" | |
9f5eb56a | 214 | "%sAccuracy: %s\n", |
871d7de4 | 215 | prefix, timer_state_to_string(t->state), |
067d72c9 | 216 | prefix, timer_result_to_string(t->result), |
9f5eb56a | 217 | prefix, trigger ? trigger->id : "n/a", |
dedabea4 LP |
218 | prefix, yes_no(t->persistent), |
219 | prefix, yes_no(t->wake_system), | |
9f5eb56a | 220 | prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1)); |
871d7de4 | 221 | |
36697dc0 LP |
222 | LIST_FOREACH(value, v, t->values) { |
223 | ||
224 | if (v->base == TIMER_CALENDAR) { | |
225 | _cleanup_free_ char *p = NULL; | |
226 | ||
227 | calendar_spec_to_string(v->calendar_spec, &p); | |
228 | ||
229 | fprintf(f, | |
230 | "%s%s: %s\n", | |
231 | prefix, | |
232 | timer_base_to_string(v->base), | |
233 | strna(p)); | |
234 | } else { | |
235 | char timespan1[FORMAT_TIMESPAN_MAX]; | |
236 | ||
237 | fprintf(f, | |
238 | "%s%s: %s\n", | |
239 | prefix, | |
240 | timer_base_to_string(v->base), | |
b1d6dcf5 | 241 | format_timespan(timespan1, sizeof(timespan1), v->value, 0)); |
36697dc0 LP |
242 | } |
243 | } | |
871d7de4 LP |
244 | } |
245 | ||
246 | static void timer_set_state(Timer *t, TimerState state) { | |
247 | TimerState old_state; | |
034c6ed7 | 248 | assert(t); |
871d7de4 LP |
249 | |
250 | old_state = t->state; | |
251 | t->state = state; | |
252 | ||
36697dc0 | 253 | if (state != TIMER_WAITING) { |
718db961 LP |
254 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
255 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
36697dc0 | 256 | } |
871d7de4 LP |
257 | |
258 | if (state != old_state) | |
f2341e0a | 259 | log_unit_debug(UNIT(t), "Changed %s -> %s", timer_state_to_string(old_state), timer_state_to_string(state)); |
871d7de4 | 260 | |
e2f3b44c | 261 | unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); |
871d7de4 LP |
262 | } |
263 | ||
264 | static void timer_enter_waiting(Timer *t, bool initial); | |
265 | ||
be847e82 | 266 | static int timer_coldplug(Unit *u) { |
871d7de4 LP |
267 | Timer *t = TIMER(u); |
268 | ||
269 | assert(t); | |
270 | assert(t->state == TIMER_DEAD); | |
271 | ||
272 | if (t->deserialized_state != t->state) { | |
273 | ||
be847e82 LP |
274 | if (t->deserialized_state == TIMER_WAITING) |
275 | timer_enter_waiting(t, false); | |
276 | else | |
871d7de4 LP |
277 | timer_set_state(t, t->deserialized_state); |
278 | } | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
067d72c9 | 283 | static void timer_enter_dead(Timer *t, TimerResult f) { |
871d7de4 LP |
284 | assert(t); |
285 | ||
067d72c9 LP |
286 | if (f != TIMER_SUCCESS) |
287 | t->result = f; | |
871d7de4 | 288 | |
067d72c9 | 289 | timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); |
871d7de4 LP |
290 | } |
291 | ||
dedabea4 LP |
292 | static usec_t monotonic_to_boottime(usec_t t) { |
293 | usec_t a, b; | |
294 | ||
295 | if (t <= 0) | |
296 | return 0; | |
297 | ||
298 | a = now(CLOCK_BOOTTIME); | |
299 | b = now(CLOCK_MONOTONIC); | |
300 | ||
301 | if (t + a > b) | |
302 | return t + a - b; | |
303 | else | |
304 | return 0; | |
305 | } | |
306 | ||
871d7de4 | 307 | static void timer_enter_waiting(Timer *t, bool initial) { |
36697dc0 | 308 | bool found_monotonic = false, found_realtime = false; |
dedabea4 LP |
309 | usec_t ts_realtime, ts_monotonic; |
310 | usec_t base = 0; | |
311 | TimerValue *v; | |
871d7de4 LP |
312 | int r; |
313 | ||
dedabea4 LP |
314 | /* If we shall wake the system we use the boottime clock |
315 | * rather than the monotonic clock. */ | |
316 | ||
317 | ts_realtime = now(CLOCK_REALTIME); | |
318 | ts_monotonic = now(t->wake_system ? CLOCK_BOOTTIME : CLOCK_MONOTONIC); | |
319 | t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0; | |
871d7de4 LP |
320 | |
321 | LIST_FOREACH(value, v, t->values) { | |
322 | ||
323 | if (v->disabled) | |
324 | continue; | |
325 | ||
36697dc0 | 326 | if (v->base == TIMER_CALENDAR) { |
06642d17 LP |
327 | usec_t b; |
328 | ||
329 | /* If we know the last time this was | |
330 | * triggered, schedule the job based relative | |
331 | * to that. If we don't just start from | |
332 | * now. */ | |
36697dc0 | 333 | |
dedabea4 | 334 | b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime; |
06642d17 LP |
335 | |
336 | r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); | |
36697dc0 LP |
337 | if (r < 0) |
338 | continue; | |
339 | ||
36697dc0 LP |
340 | if (!found_realtime) |
341 | t->next_elapse_realtime = v->next_elapse; | |
10717a1a | 342 | else |
36697dc0 | 343 | t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); |
871d7de4 | 344 | |
36697dc0 | 345 | found_realtime = true; |
871d7de4 | 346 | |
36697dc0 LP |
347 | } else { |
348 | switch (v->base) { | |
871d7de4 | 349 | |
36697dc0 LP |
350 | case TIMER_ACTIVE: |
351 | if (state_translation_table[t->state] == UNIT_ACTIVE) | |
352 | base = UNIT(t)->inactive_exit_timestamp.monotonic; | |
353 | else | |
dedabea4 | 354 | base = ts_monotonic; |
36697dc0 | 355 | break; |
871d7de4 | 356 | |
36697dc0 LP |
357 | case TIMER_BOOT: |
358 | /* CLOCK_MONOTONIC equals the uptime on Linux */ | |
359 | base = 0; | |
360 | break; | |
871d7de4 | 361 | |
36697dc0 LP |
362 | case TIMER_STARTUP: |
363 | base = UNIT(t)->manager->userspace_timestamp.monotonic; | |
364 | break; | |
871d7de4 | 365 | |
36697dc0 | 366 | case TIMER_UNIT_ACTIVE: |
871d7de4 | 367 | |
e41e1943 LP |
368 | base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic; |
369 | ||
370 | if (base <= 0) | |
06642d17 | 371 | base = t->last_trigger.monotonic; |
e41e1943 LP |
372 | |
373 | if (base <= 0) | |
36697dc0 | 374 | continue; |
871d7de4 | 375 | |
36697dc0 | 376 | break; |
871d7de4 | 377 | |
36697dc0 | 378 | case TIMER_UNIT_INACTIVE: |
871d7de4 | 379 | |
e41e1943 LP |
380 | base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic; |
381 | ||
382 | if (base <= 0) | |
06642d17 | 383 | base = t->last_trigger.monotonic; |
e41e1943 LP |
384 | |
385 | if (base <= 0) | |
36697dc0 | 386 | continue; |
871d7de4 | 387 | |
36697dc0 | 388 | break; |
871d7de4 | 389 | |
36697dc0 LP |
390 | default: |
391 | assert_not_reached("Unknown timer base"); | |
392 | } | |
871d7de4 | 393 | |
dedabea4 LP |
394 | if (t->wake_system) |
395 | base = monotonic_to_boottime(base); | |
396 | ||
36697dc0 LP |
397 | v->next_elapse = base + v->value; |
398 | ||
dedabea4 | 399 | if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { |
e41e1943 | 400 | /* This is a one time trigger, disable it now */ |
36697dc0 LP |
401 | v->disabled = true; |
402 | continue; | |
403 | } | |
404 | ||
405 | if (!found_monotonic) | |
dedabea4 | 406 | t->next_elapse_monotonic_or_boottime = v->next_elapse; |
36697dc0 | 407 | else |
dedabea4 | 408 | t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse); |
36697dc0 LP |
409 | |
410 | found_monotonic = true; | |
411 | } | |
871d7de4 LP |
412 | } |
413 | ||
36697dc0 | 414 | if (!found_monotonic && !found_realtime) { |
f2341e0a | 415 | log_unit_debug(UNIT(t), "Timer is elapsed."); |
871d7de4 LP |
416 | timer_set_state(t, TIMER_ELAPSED); |
417 | return; | |
418 | } | |
419 | ||
36697dc0 LP |
420 | if (found_monotonic) { |
421 | char buf[FORMAT_TIMESPAN_MAX]; | |
dedabea4 | 422 | |
f2341e0a | 423 | log_unit_debug(UNIT(t), "Monotonic timer elapses in %s.", format_timespan(buf, sizeof(buf), t->next_elapse_monotonic_or_boottime > ts_monotonic ? t->next_elapse_monotonic_or_boottime - ts_monotonic : 0, 0)); |
871d7de4 | 424 | |
718db961 | 425 | if (t->monotonic_event_source) { |
dedabea4 | 426 | r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime); |
718db961 LP |
427 | if (r < 0) |
428 | goto fail; | |
429 | ||
430 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT); | |
cbf60d0a LP |
431 | if (r < 0) |
432 | goto fail; | |
433 | } else { | |
434 | ||
6a0f1f6d LP |
435 | r = sd_event_add_time( |
436 | UNIT(t)->manager->event, | |
437 | &t->monotonic_event_source, | |
dedabea4 LP |
438 | t->wake_system ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC, |
439 | t->next_elapse_monotonic_or_boottime, t->accuracy_usec, | |
6a0f1f6d | 440 | timer_dispatch, t); |
cbf60d0a LP |
441 | if (r < 0) |
442 | goto fail; | |
718db961 | 443 | |
cbf60d0a LP |
444 | (void) sd_event_source_set_description(t->monotonic_event_source, "timer-monotonic"); |
445 | } | |
7dfbe2e3 | 446 | |
718db961 | 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]; | |
f2341e0a | 456 | log_unit_debug(UNIT(t), "Realtime timer elapses at %s.", 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); | |
cbf60d0a LP |
464 | if (r < 0) |
465 | goto fail; | |
466 | } else { | |
6a0f1f6d LP |
467 | r = sd_event_add_time( |
468 | UNIT(t)->manager->event, | |
469 | &t->realtime_event_source, | |
dedabea4 | 470 | t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME, |
6a0f1f6d LP |
471 | t->next_elapse_realtime, t->accuracy_usec, |
472 | timer_dispatch, t); | |
cbf60d0a LP |
473 | if (r < 0) |
474 | goto fail; | |
718db961 | 475 | |
cbf60d0a LP |
476 | (void) sd_event_source_set_description(t->realtime_event_source, "timer-realtime"); |
477 | } | |
7dfbe2e3 | 478 | |
718db961 | 479 | } else if (t->realtime_event_source) { |
718db961 | 480 | |
06642d17 | 481 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); |
718db961 LP |
482 | if (r < 0) |
483 | goto fail; | |
484 | } | |
871d7de4 LP |
485 | |
486 | timer_set_state(t, TIMER_WAITING); | |
487 | return; | |
488 | ||
489 | fail: | |
f2341e0a | 490 | log_unit_warning_errno(UNIT(t), r, "Failed to enter waiting state: %m"); |
067d72c9 | 491 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
492 | } |
493 | ||
494 | static void timer_enter_running(Timer *t) { | |
718db961 | 495 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
871d7de4 | 496 | int r; |
398ef8ba | 497 | |
871d7de4 LP |
498 | assert(t); |
499 | ||
ba3e67a7 | 500 | /* Don't start job if we are supposed to go down */ |
31afa0a4 | 501 | if (unit_stop_pending(UNIT(t))) |
ba3e67a7 LP |
502 | return; |
503 | ||
3ecaa09b LP |
504 | r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)), |
505 | JOB_REPLACE, true, &error, NULL); | |
36697dc0 | 506 | if (r < 0) |
871d7de4 LP |
507 | goto fail; |
508 | ||
06642d17 LP |
509 | dual_timestamp_get(&t->last_trigger); |
510 | ||
472fc28f | 511 | if (t->stamp_path) |
fed1e721 | 512 | touch_file(t->stamp_path, true, t->last_trigger.realtime, UID_INVALID, GID_INVALID, 0); |
e41e1943 | 513 | |
871d7de4 LP |
514 | timer_set_state(t, TIMER_RUNNING); |
515 | return; | |
516 | ||
517 | fail: | |
f2341e0a | 518 | log_unit_warning(UNIT(t), "Failed to queue unit startup job: %s", bus_error_message(&error, r)); |
067d72c9 | 519 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
520 | } |
521 | ||
522 | static int timer_start(Unit *u) { | |
523 | Timer *t = TIMER(u); | |
779042e7 | 524 | TimerValue *v; |
871d7de4 LP |
525 | |
526 | assert(t); | |
fdf20a31 | 527 | assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED); |
01f78473 | 528 | |
3ecaa09b | 529 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 530 | return -ENOENT; |
871d7de4 | 531 | |
06642d17 LP |
532 | t->last_trigger = DUAL_TIMESTAMP_NULL; |
533 | ||
779042e7 MC |
534 | /* Reenable all timers that depend on unit activation time */ |
535 | LIST_FOREACH(value, v, t->values) | |
536 | if (v->base == TIMER_ACTIVE) | |
537 | v->disabled = false; | |
538 | ||
06642d17 LP |
539 | if (t->stamp_path) { |
540 | struct stat st; | |
541 | ||
542 | if (stat(t->stamp_path, &st) >= 0) | |
543 | t->last_trigger.realtime = timespec_load(&st.st_atim); | |
472fc28f TB |
544 | else if (errno == ENOENT) |
545 | /* The timer has never run before, | |
546 | * make sure a stamp file exists. | |
547 | */ | |
46bcf492 | 548 | touch_file(t->stamp_path, true, USEC_INFINITY, UID_INVALID, GID_INVALID, 0); |
06642d17 LP |
549 | } |
550 | ||
067d72c9 | 551 | t->result = TIMER_SUCCESS; |
871d7de4 | 552 | timer_enter_waiting(t, true); |
82a2b6bb | 553 | return 1; |
871d7de4 LP |
554 | } |
555 | ||
556 | static int timer_stop(Unit *u) { | |
557 | Timer *t = TIMER(u); | |
558 | ||
559 | assert(t); | |
560 | assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); | |
561 | ||
067d72c9 | 562 | timer_enter_dead(t, TIMER_SUCCESS); |
82a2b6bb | 563 | return 1; |
871d7de4 LP |
564 | } |
565 | ||
566 | static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { | |
567 | Timer *t = TIMER(u); | |
568 | ||
569 | assert(u); | |
570 | assert(f); | |
571 | assert(fds); | |
572 | ||
573 | unit_serialize_item(u, f, "state", timer_state_to_string(t->state)); | |
067d72c9 | 574 | unit_serialize_item(u, f, "result", timer_result_to_string(t->result)); |
871d7de4 | 575 | |
06642d17 LP |
576 | if (t->last_trigger.realtime > 0) |
577 | unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime); | |
578 | ||
579 | if (t->last_trigger.monotonic > 0) | |
580 | unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic); | |
581 | ||
871d7de4 LP |
582 | return 0; |
583 | } | |
584 | ||
585 | static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
586 | Timer *t = TIMER(u); | |
06642d17 | 587 | int r; |
871d7de4 LP |
588 | |
589 | assert(u); | |
590 | assert(key); | |
591 | assert(value); | |
592 | assert(fds); | |
593 | ||
594 | if (streq(key, "state")) { | |
595 | TimerState state; | |
596 | ||
36697dc0 LP |
597 | state = timer_state_from_string(value); |
598 | if (state < 0) | |
f2341e0a | 599 | log_unit_debug(u, "Failed to parse state value: %s", value); |
871d7de4 LP |
600 | else |
601 | t->deserialized_state = state; | |
067d72c9 LP |
602 | } else if (streq(key, "result")) { |
603 | TimerResult f; | |
604 | ||
605 | f = timer_result_from_string(value); | |
606 | if (f < 0) | |
f2341e0a | 607 | log_unit_debug(u, "Failed to parse result value: %s", value); |
067d72c9 LP |
608 | else if (f != TIMER_SUCCESS) |
609 | t->result = f; | |
06642d17 LP |
610 | } else if (streq(key, "last-trigger-realtime")) { |
611 | ||
612 | r = safe_atou64(value, &t->last_trigger.realtime); | |
613 | if (r < 0) | |
f2341e0a | 614 | log_unit_debug(u, "Failed to parse last-trigger-realtime value: %s", value); |
06642d17 LP |
615 | |
616 | } else if (streq(key, "last-trigger-monotonic")) { | |
617 | ||
618 | r = safe_atou64(value, &t->last_trigger.monotonic); | |
619 | if (r < 0) | |
f2341e0a | 620 | log_unit_debug(u, "Failed to parse last-trigger-monotonic value: %s", value); |
067d72c9 | 621 | |
871d7de4 | 622 | } else |
f2341e0a | 623 | log_unit_debug(u, "Unknown serialization key: %s", key); |
871d7de4 LP |
624 | |
625 | return 0; | |
034c6ed7 LP |
626 | } |
627 | ||
44a6b1b6 | 628 | _pure_ static UnitActiveState timer_active_state(Unit *u) { |
871d7de4 LP |
629 | assert(u); |
630 | ||
631 | return state_translation_table[TIMER(u)->state]; | |
632 | } | |
633 | ||
44a6b1b6 | 634 | _pure_ static const char *timer_sub_state_to_string(Unit *u) { |
871d7de4 LP |
635 | assert(u); |
636 | ||
637 | return timer_state_to_string(TIMER(u)->state); | |
638 | } | |
639 | ||
718db961 LP |
640 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) { |
641 | Timer *t = TIMER(userdata); | |
871d7de4 LP |
642 | |
643 | assert(t); | |
5cb5a6ff | 644 | |
871d7de4 | 645 | if (t->state != TIMER_WAITING) |
718db961 | 646 | return 0; |
5cb5a6ff | 647 | |
f2341e0a | 648 | log_unit_debug(UNIT(t), "Timer elapsed."); |
871d7de4 | 649 | timer_enter_running(t); |
718db961 | 650 | return 0; |
5cb5a6ff LP |
651 | } |
652 | ||
3ecaa09b LP |
653 | static void timer_trigger_notify(Unit *u, Unit *other) { |
654 | Timer *t = TIMER(u); | |
655 | TimerValue *v; | |
871d7de4 | 656 | |
3ecaa09b LP |
657 | assert(u); |
658 | assert(other); | |
871d7de4 | 659 | |
3ecaa09b LP |
660 | if (other->load_state != UNIT_LOADED) |
661 | return; | |
871d7de4 | 662 | |
3ecaa09b LP |
663 | /* Reenable all timers that depend on unit state */ |
664 | LIST_FOREACH(value, v, t->values) | |
665 | if (v->base == TIMER_UNIT_ACTIVE || | |
666 | v->base == TIMER_UNIT_INACTIVE) | |
667 | v->disabled = false; | |
01f78473 | 668 | |
3ecaa09b | 669 | switch (t->state) { |
871d7de4 | 670 | |
3ecaa09b LP |
671 | case TIMER_WAITING: |
672 | case TIMER_ELAPSED: | |
871d7de4 | 673 | |
3ecaa09b LP |
674 | /* Recalculate sleep time */ |
675 | timer_enter_waiting(t, false); | |
676 | break; | |
871d7de4 | 677 | |
3ecaa09b | 678 | case TIMER_RUNNING: |
871d7de4 | 679 | |
3ecaa09b | 680 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) { |
f2341e0a | 681 | log_unit_debug(UNIT(t), "Got notified about unit deactivation."); |
871d7de4 | 682 | timer_enter_waiting(t, false); |
3ecaa09b LP |
683 | } |
684 | break; | |
871d7de4 | 685 | |
3ecaa09b LP |
686 | case TIMER_DEAD: |
687 | case TIMER_FAILED: | |
688 | break; | |
871d7de4 | 689 | |
3ecaa09b LP |
690 | default: |
691 | assert_not_reached("Unknown timer state"); | |
871d7de4 | 692 | } |
871d7de4 LP |
693 | } |
694 | ||
fdf20a31 | 695 | static void timer_reset_failed(Unit *u) { |
5632e374 LP |
696 | Timer *t = TIMER(u); |
697 | ||
698 | assert(t); | |
699 | ||
fdf20a31 | 700 | if (t->state == TIMER_FAILED) |
5632e374 LP |
701 | timer_set_state(t, TIMER_DEAD); |
702 | ||
067d72c9 | 703 | t->result = TIMER_SUCCESS; |
5632e374 LP |
704 | } |
705 | ||
8742514c LP |
706 | static void timer_time_change(Unit *u) { |
707 | Timer *t = TIMER(u); | |
708 | ||
709 | assert(u); | |
710 | ||
711 | if (t->state != TIMER_WAITING) | |
712 | return; | |
713 | ||
f2341e0a | 714 | log_unit_debug(u, "Time change, recalculating next elapse."); |
8742514c LP |
715 | timer_enter_waiting(t, false); |
716 | } | |
717 | ||
871d7de4 | 718 | static const char* const timer_base_table[_TIMER_BASE_MAX] = { |
03fae018 LP |
719 | [TIMER_ACTIVE] = "OnActiveSec", |
720 | [TIMER_BOOT] = "OnBootSec", | |
721 | [TIMER_STARTUP] = "OnStartupSec", | |
722 | [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", | |
36697dc0 LP |
723 | [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", |
724 | [TIMER_CALENDAR] = "OnCalendar" | |
871d7de4 LP |
725 | }; |
726 | ||
727 | DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); | |
728 | ||
067d72c9 LP |
729 | static const char* const timer_result_table[_TIMER_RESULT_MAX] = { |
730 | [TIMER_SUCCESS] = "success", | |
731 | [TIMER_FAILURE_RESOURCES] = "resources" | |
732 | }; | |
733 | ||
734 | DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); | |
735 | ||
87f0e418 | 736 | const UnitVTable timer_vtable = { |
7d17cfbc | 737 | .object_size = sizeof(Timer), |
718db961 | 738 | |
f975e971 LP |
739 | .sections = |
740 | "Unit\0" | |
741 | "Timer\0" | |
742 | "Install\0", | |
d8a812d1 | 743 | .private_section = "Timer", |
5cb5a6ff | 744 | |
871d7de4 | 745 | .init = timer_init, |
034c6ed7 | 746 | .done = timer_done, |
871d7de4 LP |
747 | .load = timer_load, |
748 | ||
749 | .coldplug = timer_coldplug, | |
750 | ||
751 | .dump = timer_dump, | |
752 | ||
753 | .start = timer_start, | |
754 | .stop = timer_stop, | |
755 | ||
756 | .serialize = timer_serialize, | |
757 | .deserialize_item = timer_deserialize_item, | |
758 | ||
759 | .active_state = timer_active_state, | |
760 | .sub_state_to_string = timer_sub_state_to_string, | |
761 | ||
3ecaa09b LP |
762 | .trigger_notify = timer_trigger_notify, |
763 | ||
fdf20a31 | 764 | .reset_failed = timer_reset_failed, |
8742514c | 765 | .time_change = timer_time_change, |
5632e374 | 766 | |
718db961 | 767 | .bus_vtable = bus_timer_vtable, |
d8a812d1 WC |
768 | .bus_set_property = bus_timer_set_property, |
769 | ||
770 | .can_transient = true, | |
5cb5a6ff | 771 | }; |