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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 LP |
28 | #include "string-util.h" |
29 | #include "unit-name.h" | |
30 | #include "unit.h" | |
31 | #include "timer.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 | |
3a43da28 KS |
49 | t->next_elapse_monotonic_or_boottime = USEC_INFINITY; |
50 | t->next_elapse_realtime = USEC_INFINITY; | |
bd8f585b | 51 | t->accuracy_usec = u->manager->default_timer_accuracy_usec; |
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); |
3e044c49 | 61 | calendar_spec_free(v->calendar_spec); |
871d7de4 LP |
62 | free(v); |
63 | } | |
74051b9b LP |
64 | } |
65 | ||
66 | static void timer_done(Unit *u) { | |
67 | Timer *t = TIMER(u); | |
68 | ||
69 | assert(t); | |
70 | ||
71 | timer_free_values(t); | |
871d7de4 | 72 | |
718db961 LP |
73 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
74 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
06642d17 LP |
75 | |
76 | free(t->stamp_path); | |
871d7de4 LP |
77 | } |
78 | ||
79 | static int timer_verify(Timer *t) { | |
80 | assert(t); | |
81 | ||
1124fe6f | 82 | if (UNIT(t)->load_state != UNIT_LOADED) |
871d7de4 LP |
83 | return 0; |
84 | ||
85 | if (!t->values) { | |
f2341e0a | 86 | log_unit_error(UNIT(t), "Timer unit lacks value setting. Refusing."); |
871d7de4 LP |
87 | return -EINVAL; |
88 | } | |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
6c155fe3 LP |
93 | static int timer_add_default_dependencies(Timer *t) { |
94 | int r; | |
19f8d037 | 95 | TimerValue *v; |
6c155fe3 LP |
96 | |
97 | assert(t); | |
98 | ||
e3d84721 LP |
99 | r = unit_add_dependency_by_name(UNIT(t), UNIT_BEFORE, SPECIAL_TIMERS_TARGET, NULL, true); |
100 | if (r < 0) | |
101 | return r; | |
2a77d31d | 102 | |
b2c23da8 | 103 | if (UNIT(t)->manager->running_as == MANAGER_SYSTEM) { |
36697dc0 LP |
104 | r = unit_add_two_dependencies_by_name(UNIT(t), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true); |
105 | if (r < 0) | |
6c155fe3 | 106 | return r; |
19f8d037 TGR |
107 | |
108 | LIST_FOREACH(value, v, t->values) { | |
109 | if (v->base == TIMER_CALENDAR) { | |
110 | r = unit_add_dependency_by_name(UNIT(t), UNIT_AFTER, SPECIAL_TIME_SYNC_TARGET, NULL, true); | |
111 | if (r < 0) | |
112 | return r; | |
113 | break; | |
114 | } | |
115 | } | |
2a77d31d | 116 | } |
6c155fe3 | 117 | |
ead8e478 | 118 | return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
6c155fe3 LP |
119 | } |
120 | ||
06642d17 LP |
121 | static int timer_setup_persistent(Timer *t) { |
122 | int r; | |
123 | ||
124 | assert(t); | |
125 | ||
126 | if (!t->persistent) | |
127 | return 0; | |
128 | ||
b2c23da8 | 129 | if (UNIT(t)->manager->running_as == MANAGER_SYSTEM) { |
06642d17 LP |
130 | |
131 | r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers"); | |
132 | if (r < 0) | |
133 | return r; | |
134 | ||
135 | t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id); | |
136 | } else { | |
137 | const char *e; | |
138 | ||
139 | e = getenv("XDG_DATA_HOME"); | |
140 | if (e) | |
bd34b310 | 141 | t->stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id, NULL); |
06642d17 LP |
142 | else { |
143 | ||
144 | _cleanup_free_ char *h = NULL; | |
145 | ||
146 | r = get_home_dir(&h); | |
23bbb0de | 147 | if (r < 0) |
f2341e0a | 148 | return log_unit_error_errno(UNIT(t), r, "Failed to determine home directory: %m"); |
06642d17 LP |
149 | |
150 | t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL); | |
151 | } | |
152 | } | |
153 | ||
154 | if (!t->stamp_path) | |
155 | return log_oom(); | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
871d7de4 LP |
160 | static int timer_load(Unit *u) { |
161 | Timer *t = TIMER(u); | |
162 | int r; | |
163 | ||
164 | assert(u); | |
ac155bb8 | 165 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 166 | |
36697dc0 LP |
167 | r = unit_load_fragment_and_dropin(u); |
168 | if (r < 0) | |
871d7de4 LP |
169 | return r; |
170 | ||
ac155bb8 | 171 | if (u->load_state == UNIT_LOADED) { |
871d7de4 | 172 | |
3ecaa09b | 173 | if (set_isempty(u->dependencies[UNIT_TRIGGERS])) { |
57020a3a LP |
174 | Unit *x; |
175 | ||
176 | r = unit_load_related_unit(u, ".service", &x); | |
177 | if (r < 0) | |
871d7de4 LP |
178 | return r; |
179 | ||
3ecaa09b LP |
180 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
181 | if (r < 0) | |
182 | return r; | |
57020a3a LP |
183 | } |
184 | ||
06642d17 LP |
185 | r = timer_setup_persistent(t); |
186 | if (r < 0) | |
187 | return r; | |
188 | ||
189 | if (u->default_dependencies) { | |
36697dc0 LP |
190 | r = timer_add_default_dependencies(t); |
191 | if (r < 0) | |
a40eb732 | 192 | return r; |
36697dc0 | 193 | } |
871d7de4 LP |
194 | } |
195 | ||
196 | return timer_verify(t); | |
197 | } | |
198 | ||
199 | static void timer_dump(Unit *u, FILE *f, const char *prefix) { | |
9f5eb56a | 200 | char buf[FORMAT_TIMESPAN_MAX]; |
871d7de4 | 201 | Timer *t = TIMER(u); |
3ecaa09b | 202 | Unit *trigger; |
871d7de4 | 203 | TimerValue *v; |
034c6ed7 | 204 | |
3ecaa09b LP |
205 | trigger = UNIT_TRIGGER(u); |
206 | ||
871d7de4 LP |
207 | fprintf(f, |
208 | "%sTimer State: %s\n" | |
067d72c9 | 209 | "%sResult: %s\n" |
9f5eb56a | 210 | "%sUnit: %s\n" |
dedabea4 LP |
211 | "%sPersistent: %s\n" |
212 | "%sWakeSystem: %s\n" | |
9f5eb56a | 213 | "%sAccuracy: %s\n", |
871d7de4 | 214 | prefix, timer_state_to_string(t->state), |
067d72c9 | 215 | prefix, timer_result_to_string(t->result), |
9f5eb56a | 216 | prefix, trigger ? trigger->id : "n/a", |
dedabea4 LP |
217 | prefix, yes_no(t->persistent), |
218 | prefix, yes_no(t->wake_system), | |
9f5eb56a | 219 | prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1)); |
871d7de4 | 220 | |
36697dc0 LP |
221 | LIST_FOREACH(value, v, t->values) { |
222 | ||
223 | if (v->base == TIMER_CALENDAR) { | |
224 | _cleanup_free_ char *p = NULL; | |
225 | ||
226 | calendar_spec_to_string(v->calendar_spec, &p); | |
227 | ||
228 | fprintf(f, | |
229 | "%s%s: %s\n", | |
230 | prefix, | |
231 | timer_base_to_string(v->base), | |
232 | strna(p)); | |
233 | } else { | |
234 | char timespan1[FORMAT_TIMESPAN_MAX]; | |
235 | ||
236 | fprintf(f, | |
237 | "%s%s: %s\n", | |
238 | prefix, | |
239 | timer_base_to_string(v->base), | |
b1d6dcf5 | 240 | format_timespan(timespan1, sizeof(timespan1), v->value, 0)); |
36697dc0 LP |
241 | } |
242 | } | |
871d7de4 LP |
243 | } |
244 | ||
245 | static void timer_set_state(Timer *t, TimerState state) { | |
246 | TimerState old_state; | |
034c6ed7 | 247 | assert(t); |
871d7de4 LP |
248 | |
249 | old_state = t->state; | |
250 | t->state = state; | |
251 | ||
36697dc0 | 252 | if (state != TIMER_WAITING) { |
718db961 LP |
253 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
254 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
36697dc0 | 255 | } |
871d7de4 LP |
256 | |
257 | if (state != old_state) | |
f2341e0a | 258 | log_unit_debug(UNIT(t), "Changed %s -> %s", timer_state_to_string(old_state), timer_state_to_string(state)); |
871d7de4 | 259 | |
e2f3b44c | 260 | unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); |
871d7de4 LP |
261 | } |
262 | ||
263 | static void timer_enter_waiting(Timer *t, bool initial); | |
264 | ||
be847e82 | 265 | static int timer_coldplug(Unit *u) { |
871d7de4 LP |
266 | Timer *t = TIMER(u); |
267 | ||
268 | assert(t); | |
269 | assert(t->state == TIMER_DEAD); | |
270 | ||
271 | if (t->deserialized_state != t->state) { | |
272 | ||
be847e82 LP |
273 | if (t->deserialized_state == TIMER_WAITING) |
274 | timer_enter_waiting(t, false); | |
275 | else | |
871d7de4 LP |
276 | timer_set_state(t, t->deserialized_state); |
277 | } | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
067d72c9 | 282 | static void timer_enter_dead(Timer *t, TimerResult f) { |
871d7de4 LP |
283 | assert(t); |
284 | ||
067d72c9 LP |
285 | if (f != TIMER_SUCCESS) |
286 | t->result = f; | |
871d7de4 | 287 | |
067d72c9 | 288 | timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); |
871d7de4 LP |
289 | } |
290 | ||
dedabea4 LP |
291 | static usec_t monotonic_to_boottime(usec_t t) { |
292 | usec_t a, b; | |
293 | ||
294 | if (t <= 0) | |
295 | return 0; | |
296 | ||
297 | a = now(CLOCK_BOOTTIME); | |
298 | b = now(CLOCK_MONOTONIC); | |
299 | ||
300 | if (t + a > b) | |
301 | return t + a - b; | |
302 | else | |
303 | return 0; | |
304 | } | |
305 | ||
871d7de4 | 306 | static void timer_enter_waiting(Timer *t, bool initial) { |
36697dc0 | 307 | bool found_monotonic = false, found_realtime = false; |
dedabea4 LP |
308 | usec_t ts_realtime, ts_monotonic; |
309 | usec_t base = 0; | |
310 | TimerValue *v; | |
871d7de4 LP |
311 | int r; |
312 | ||
dedabea4 LP |
313 | /* If we shall wake the system we use the boottime clock |
314 | * rather than the monotonic clock. */ | |
315 | ||
316 | ts_realtime = now(CLOCK_REALTIME); | |
317 | ts_monotonic = now(t->wake_system ? CLOCK_BOOTTIME : CLOCK_MONOTONIC); | |
318 | t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0; | |
871d7de4 LP |
319 | |
320 | LIST_FOREACH(value, v, t->values) { | |
321 | ||
322 | if (v->disabled) | |
323 | continue; | |
324 | ||
36697dc0 | 325 | if (v->base == TIMER_CALENDAR) { |
06642d17 LP |
326 | usec_t b; |
327 | ||
328 | /* If we know the last time this was | |
329 | * triggered, schedule the job based relative | |
330 | * to that. If we don't just start from | |
331 | * now. */ | |
36697dc0 | 332 | |
dedabea4 | 333 | b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime; |
06642d17 LP |
334 | |
335 | r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); | |
36697dc0 LP |
336 | if (r < 0) |
337 | continue; | |
338 | ||
36697dc0 LP |
339 | if (!found_realtime) |
340 | t->next_elapse_realtime = v->next_elapse; | |
10717a1a | 341 | else |
36697dc0 | 342 | t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); |
871d7de4 | 343 | |
36697dc0 | 344 | found_realtime = true; |
871d7de4 | 345 | |
36697dc0 LP |
346 | } else { |
347 | switch (v->base) { | |
871d7de4 | 348 | |
36697dc0 LP |
349 | case TIMER_ACTIVE: |
350 | if (state_translation_table[t->state] == UNIT_ACTIVE) | |
351 | base = UNIT(t)->inactive_exit_timestamp.monotonic; | |
352 | else | |
dedabea4 | 353 | base = ts_monotonic; |
36697dc0 | 354 | break; |
871d7de4 | 355 | |
36697dc0 LP |
356 | case TIMER_BOOT: |
357 | /* CLOCK_MONOTONIC equals the uptime on Linux */ | |
358 | base = 0; | |
359 | break; | |
871d7de4 | 360 | |
36697dc0 LP |
361 | case TIMER_STARTUP: |
362 | base = UNIT(t)->manager->userspace_timestamp.monotonic; | |
363 | break; | |
871d7de4 | 364 | |
36697dc0 | 365 | case TIMER_UNIT_ACTIVE: |
871d7de4 | 366 | |
e41e1943 LP |
367 | base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic; |
368 | ||
369 | if (base <= 0) | |
06642d17 | 370 | base = t->last_trigger.monotonic; |
e41e1943 LP |
371 | |
372 | if (base <= 0) | |
36697dc0 | 373 | continue; |
871d7de4 | 374 | |
36697dc0 | 375 | break; |
871d7de4 | 376 | |
36697dc0 | 377 | case TIMER_UNIT_INACTIVE: |
871d7de4 | 378 | |
e41e1943 LP |
379 | base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic; |
380 | ||
381 | if (base <= 0) | |
06642d17 | 382 | base = t->last_trigger.monotonic; |
e41e1943 LP |
383 | |
384 | if (base <= 0) | |
36697dc0 | 385 | continue; |
871d7de4 | 386 | |
36697dc0 | 387 | break; |
871d7de4 | 388 | |
36697dc0 LP |
389 | default: |
390 | assert_not_reached("Unknown timer base"); | |
391 | } | |
871d7de4 | 392 | |
dedabea4 LP |
393 | if (t->wake_system) |
394 | base = monotonic_to_boottime(base); | |
395 | ||
36697dc0 LP |
396 | v->next_elapse = base + v->value; |
397 | ||
dedabea4 | 398 | if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { |
e41e1943 | 399 | /* This is a one time trigger, disable it now */ |
36697dc0 LP |
400 | v->disabled = true; |
401 | continue; | |
402 | } | |
403 | ||
404 | if (!found_monotonic) | |
dedabea4 | 405 | t->next_elapse_monotonic_or_boottime = v->next_elapse; |
36697dc0 | 406 | else |
dedabea4 | 407 | t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse); |
36697dc0 LP |
408 | |
409 | found_monotonic = true; | |
410 | } | |
871d7de4 LP |
411 | } |
412 | ||
36697dc0 | 413 | if (!found_monotonic && !found_realtime) { |
f2341e0a | 414 | log_unit_debug(UNIT(t), "Timer is elapsed."); |
871d7de4 LP |
415 | timer_set_state(t, TIMER_ELAPSED); |
416 | return; | |
417 | } | |
418 | ||
36697dc0 LP |
419 | if (found_monotonic) { |
420 | char buf[FORMAT_TIMESPAN_MAX]; | |
dedabea4 | 421 | |
f2341e0a | 422 | 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 | 423 | |
718db961 | 424 | if (t->monotonic_event_source) { |
dedabea4 | 425 | r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime); |
718db961 LP |
426 | if (r < 0) |
427 | goto fail; | |
428 | ||
429 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT); | |
cbf60d0a LP |
430 | if (r < 0) |
431 | goto fail; | |
432 | } else { | |
433 | ||
6a0f1f6d LP |
434 | r = sd_event_add_time( |
435 | UNIT(t)->manager->event, | |
436 | &t->monotonic_event_source, | |
dedabea4 LP |
437 | t->wake_system ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC, |
438 | t->next_elapse_monotonic_or_boottime, t->accuracy_usec, | |
6a0f1f6d | 439 | timer_dispatch, t); |
cbf60d0a LP |
440 | if (r < 0) |
441 | goto fail; | |
718db961 | 442 | |
cbf60d0a LP |
443 | (void) sd_event_source_set_description(t->monotonic_event_source, "timer-monotonic"); |
444 | } | |
7dfbe2e3 | 445 | |
718db961 | 446 | } else if (t->monotonic_event_source) { |
718db961 | 447 | |
06642d17 | 448 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_OFF); |
718db961 LP |
449 | if (r < 0) |
450 | goto fail; | |
451 | } | |
36697dc0 LP |
452 | |
453 | if (found_realtime) { | |
454 | char buf[FORMAT_TIMESTAMP_MAX]; | |
f2341e0a | 455 | log_unit_debug(UNIT(t), "Realtime timer elapses at %s.", format_timestamp(buf, sizeof(buf), t->next_elapse_realtime)); |
36697dc0 | 456 | |
718db961 LP |
457 | if (t->realtime_event_source) { |
458 | r = sd_event_source_set_time(t->realtime_event_source, t->next_elapse_realtime); | |
459 | if (r < 0) | |
460 | goto fail; | |
461 | ||
462 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_ONESHOT); | |
cbf60d0a LP |
463 | if (r < 0) |
464 | goto fail; | |
465 | } else { | |
6a0f1f6d LP |
466 | r = sd_event_add_time( |
467 | UNIT(t)->manager->event, | |
468 | &t->realtime_event_source, | |
dedabea4 | 469 | t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME, |
6a0f1f6d LP |
470 | t->next_elapse_realtime, t->accuracy_usec, |
471 | timer_dispatch, t); | |
cbf60d0a LP |
472 | if (r < 0) |
473 | goto fail; | |
718db961 | 474 | |
cbf60d0a LP |
475 | (void) sd_event_source_set_description(t->realtime_event_source, "timer-realtime"); |
476 | } | |
7dfbe2e3 | 477 | |
718db961 | 478 | } else if (t->realtime_event_source) { |
718db961 | 479 | |
06642d17 | 480 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); |
718db961 LP |
481 | if (r < 0) |
482 | goto fail; | |
483 | } | |
871d7de4 LP |
484 | |
485 | timer_set_state(t, TIMER_WAITING); | |
486 | return; | |
487 | ||
488 | fail: | |
f2341e0a | 489 | log_unit_warning_errno(UNIT(t), r, "Failed to enter waiting state: %m"); |
067d72c9 | 490 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
491 | } |
492 | ||
493 | static void timer_enter_running(Timer *t) { | |
718db961 | 494 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
871d7de4 | 495 | int r; |
398ef8ba | 496 | |
871d7de4 LP |
497 | assert(t); |
498 | ||
ba3e67a7 | 499 | /* Don't start job if we are supposed to go down */ |
31afa0a4 | 500 | if (unit_stop_pending(UNIT(t))) |
ba3e67a7 LP |
501 | return; |
502 | ||
3ecaa09b LP |
503 | r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)), |
504 | JOB_REPLACE, true, &error, NULL); | |
36697dc0 | 505 | if (r < 0) |
871d7de4 LP |
506 | goto fail; |
507 | ||
06642d17 LP |
508 | dual_timestamp_get(&t->last_trigger); |
509 | ||
472fc28f | 510 | if (t->stamp_path) |
fed1e721 | 511 | touch_file(t->stamp_path, true, t->last_trigger.realtime, UID_INVALID, GID_INVALID, 0); |
e41e1943 | 512 | |
871d7de4 LP |
513 | timer_set_state(t, TIMER_RUNNING); |
514 | return; | |
515 | ||
516 | fail: | |
f2341e0a | 517 | log_unit_warning(UNIT(t), "Failed to queue unit startup job: %s", bus_error_message(&error, r)); |
067d72c9 | 518 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
519 | } |
520 | ||
521 | static int timer_start(Unit *u) { | |
522 | Timer *t = TIMER(u); | |
779042e7 | 523 | TimerValue *v; |
871d7de4 LP |
524 | |
525 | assert(t); | |
fdf20a31 | 526 | assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED); |
01f78473 | 527 | |
3ecaa09b | 528 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 529 | return -ENOENT; |
871d7de4 | 530 | |
06642d17 LP |
531 | t->last_trigger = DUAL_TIMESTAMP_NULL; |
532 | ||
779042e7 MC |
533 | /* Reenable all timers that depend on unit activation time */ |
534 | LIST_FOREACH(value, v, t->values) | |
535 | if (v->base == TIMER_ACTIVE) | |
536 | v->disabled = false; | |
537 | ||
06642d17 LP |
538 | if (t->stamp_path) { |
539 | struct stat st; | |
540 | ||
541 | if (stat(t->stamp_path, &st) >= 0) | |
542 | t->last_trigger.realtime = timespec_load(&st.st_atim); | |
472fc28f TB |
543 | else if (errno == ENOENT) |
544 | /* The timer has never run before, | |
545 | * make sure a stamp file exists. | |
546 | */ | |
46bcf492 | 547 | touch_file(t->stamp_path, true, USEC_INFINITY, UID_INVALID, GID_INVALID, 0); |
06642d17 LP |
548 | } |
549 | ||
067d72c9 | 550 | t->result = TIMER_SUCCESS; |
871d7de4 | 551 | timer_enter_waiting(t, true); |
82a2b6bb | 552 | return 1; |
871d7de4 LP |
553 | } |
554 | ||
555 | static int timer_stop(Unit *u) { | |
556 | Timer *t = TIMER(u); | |
557 | ||
558 | assert(t); | |
559 | assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); | |
560 | ||
067d72c9 | 561 | timer_enter_dead(t, TIMER_SUCCESS); |
82a2b6bb | 562 | return 1; |
871d7de4 LP |
563 | } |
564 | ||
565 | static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { | |
566 | Timer *t = TIMER(u); | |
567 | ||
568 | assert(u); | |
569 | assert(f); | |
570 | assert(fds); | |
571 | ||
572 | unit_serialize_item(u, f, "state", timer_state_to_string(t->state)); | |
067d72c9 | 573 | unit_serialize_item(u, f, "result", timer_result_to_string(t->result)); |
871d7de4 | 574 | |
06642d17 LP |
575 | if (t->last_trigger.realtime > 0) |
576 | unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime); | |
577 | ||
578 | if (t->last_trigger.monotonic > 0) | |
579 | unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic); | |
580 | ||
871d7de4 LP |
581 | return 0; |
582 | } | |
583 | ||
584 | static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
585 | Timer *t = TIMER(u); | |
06642d17 | 586 | int r; |
871d7de4 LP |
587 | |
588 | assert(u); | |
589 | assert(key); | |
590 | assert(value); | |
591 | assert(fds); | |
592 | ||
593 | if (streq(key, "state")) { | |
594 | TimerState state; | |
595 | ||
36697dc0 LP |
596 | state = timer_state_from_string(value); |
597 | if (state < 0) | |
f2341e0a | 598 | log_unit_debug(u, "Failed to parse state value: %s", value); |
871d7de4 LP |
599 | else |
600 | t->deserialized_state = state; | |
067d72c9 LP |
601 | } else if (streq(key, "result")) { |
602 | TimerResult f; | |
603 | ||
604 | f = timer_result_from_string(value); | |
605 | if (f < 0) | |
f2341e0a | 606 | log_unit_debug(u, "Failed to parse result value: %s", value); |
067d72c9 LP |
607 | else if (f != TIMER_SUCCESS) |
608 | t->result = f; | |
06642d17 LP |
609 | } else if (streq(key, "last-trigger-realtime")) { |
610 | ||
611 | r = safe_atou64(value, &t->last_trigger.realtime); | |
612 | if (r < 0) | |
f2341e0a | 613 | log_unit_debug(u, "Failed to parse last-trigger-realtime value: %s", value); |
06642d17 LP |
614 | |
615 | } else if (streq(key, "last-trigger-monotonic")) { | |
616 | ||
617 | r = safe_atou64(value, &t->last_trigger.monotonic); | |
618 | if (r < 0) | |
f2341e0a | 619 | log_unit_debug(u, "Failed to parse last-trigger-monotonic value: %s", value); |
067d72c9 | 620 | |
871d7de4 | 621 | } else |
f2341e0a | 622 | log_unit_debug(u, "Unknown serialization key: %s", key); |
871d7de4 LP |
623 | |
624 | return 0; | |
034c6ed7 LP |
625 | } |
626 | ||
44a6b1b6 | 627 | _pure_ static UnitActiveState timer_active_state(Unit *u) { |
871d7de4 LP |
628 | assert(u); |
629 | ||
630 | return state_translation_table[TIMER(u)->state]; | |
631 | } | |
632 | ||
44a6b1b6 | 633 | _pure_ static const char *timer_sub_state_to_string(Unit *u) { |
871d7de4 LP |
634 | assert(u); |
635 | ||
636 | return timer_state_to_string(TIMER(u)->state); | |
637 | } | |
638 | ||
718db961 LP |
639 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) { |
640 | Timer *t = TIMER(userdata); | |
871d7de4 LP |
641 | |
642 | assert(t); | |
5cb5a6ff | 643 | |
871d7de4 | 644 | if (t->state != TIMER_WAITING) |
718db961 | 645 | return 0; |
5cb5a6ff | 646 | |
f2341e0a | 647 | log_unit_debug(UNIT(t), "Timer elapsed."); |
871d7de4 | 648 | timer_enter_running(t); |
718db961 | 649 | return 0; |
5cb5a6ff LP |
650 | } |
651 | ||
3ecaa09b LP |
652 | static void timer_trigger_notify(Unit *u, Unit *other) { |
653 | Timer *t = TIMER(u); | |
654 | TimerValue *v; | |
871d7de4 | 655 | |
3ecaa09b LP |
656 | assert(u); |
657 | assert(other); | |
871d7de4 | 658 | |
3ecaa09b LP |
659 | if (other->load_state != UNIT_LOADED) |
660 | return; | |
871d7de4 | 661 | |
3ecaa09b LP |
662 | /* Reenable all timers that depend on unit state */ |
663 | LIST_FOREACH(value, v, t->values) | |
664 | if (v->base == TIMER_UNIT_ACTIVE || | |
665 | v->base == TIMER_UNIT_INACTIVE) | |
666 | v->disabled = false; | |
01f78473 | 667 | |
3ecaa09b | 668 | switch (t->state) { |
871d7de4 | 669 | |
3ecaa09b LP |
670 | case TIMER_WAITING: |
671 | case TIMER_ELAPSED: | |
871d7de4 | 672 | |
3ecaa09b LP |
673 | /* Recalculate sleep time */ |
674 | timer_enter_waiting(t, false); | |
675 | break; | |
871d7de4 | 676 | |
3ecaa09b | 677 | case TIMER_RUNNING: |
871d7de4 | 678 | |
3ecaa09b | 679 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) { |
f2341e0a | 680 | log_unit_debug(UNIT(t), "Got notified about unit deactivation."); |
871d7de4 | 681 | timer_enter_waiting(t, false); |
3ecaa09b LP |
682 | } |
683 | break; | |
871d7de4 | 684 | |
3ecaa09b LP |
685 | case TIMER_DEAD: |
686 | case TIMER_FAILED: | |
687 | break; | |
871d7de4 | 688 | |
3ecaa09b LP |
689 | default: |
690 | assert_not_reached("Unknown timer state"); | |
871d7de4 | 691 | } |
871d7de4 LP |
692 | } |
693 | ||
fdf20a31 | 694 | static void timer_reset_failed(Unit *u) { |
5632e374 LP |
695 | Timer *t = TIMER(u); |
696 | ||
697 | assert(t); | |
698 | ||
fdf20a31 | 699 | if (t->state == TIMER_FAILED) |
5632e374 LP |
700 | timer_set_state(t, TIMER_DEAD); |
701 | ||
067d72c9 | 702 | t->result = TIMER_SUCCESS; |
5632e374 LP |
703 | } |
704 | ||
8742514c LP |
705 | static void timer_time_change(Unit *u) { |
706 | Timer *t = TIMER(u); | |
707 | ||
708 | assert(u); | |
709 | ||
710 | if (t->state != TIMER_WAITING) | |
711 | return; | |
712 | ||
f2341e0a | 713 | log_unit_debug(u, "Time change, recalculating next elapse."); |
8742514c LP |
714 | timer_enter_waiting(t, false); |
715 | } | |
716 | ||
871d7de4 | 717 | static const char* const timer_base_table[_TIMER_BASE_MAX] = { |
03fae018 LP |
718 | [TIMER_ACTIVE] = "OnActiveSec", |
719 | [TIMER_BOOT] = "OnBootSec", | |
720 | [TIMER_STARTUP] = "OnStartupSec", | |
721 | [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", | |
36697dc0 LP |
722 | [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", |
723 | [TIMER_CALENDAR] = "OnCalendar" | |
871d7de4 LP |
724 | }; |
725 | ||
726 | DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); | |
727 | ||
067d72c9 LP |
728 | static const char* const timer_result_table[_TIMER_RESULT_MAX] = { |
729 | [TIMER_SUCCESS] = "success", | |
730 | [TIMER_FAILURE_RESOURCES] = "resources" | |
731 | }; | |
732 | ||
733 | DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); | |
734 | ||
87f0e418 | 735 | const UnitVTable timer_vtable = { |
7d17cfbc | 736 | .object_size = sizeof(Timer), |
718db961 | 737 | |
f975e971 LP |
738 | .sections = |
739 | "Unit\0" | |
740 | "Timer\0" | |
741 | "Install\0", | |
d8a812d1 | 742 | .private_section = "Timer", |
5cb5a6ff | 743 | |
871d7de4 | 744 | .init = timer_init, |
034c6ed7 | 745 | .done = timer_done, |
871d7de4 LP |
746 | .load = timer_load, |
747 | ||
748 | .coldplug = timer_coldplug, | |
749 | ||
750 | .dump = timer_dump, | |
751 | ||
752 | .start = timer_start, | |
753 | .stop = timer_stop, | |
754 | ||
755 | .serialize = timer_serialize, | |
756 | .deserialize_item = timer_deserialize_item, | |
757 | ||
758 | .active_state = timer_active_state, | |
759 | .sub_state_to_string = timer_sub_state_to_string, | |
760 | ||
3ecaa09b LP |
761 | .trigger_notify = timer_trigger_notify, |
762 | ||
fdf20a31 | 763 | .reset_failed = timer_reset_failed, |
8742514c | 764 | .time_change = timer_time_change, |
5632e374 | 765 | |
718db961 | 766 | .bus_vtable = bus_timer_vtable, |
d8a812d1 WC |
767 | .bus_set_property = bus_timer_set_property, |
768 | ||
769 | .can_transient = true, | |
5cb5a6ff | 770 | }; |