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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" |
f4f15635 | 27 | #include "fs-util.h" |
6bedfcbb | 28 | #include "parse-util.h" |
a40eb732 | 29 | #include "special.h" |
8b43440b | 30 | #include "string-table.h" |
07630cea | 31 | #include "string-util.h" |
b1d4f8e1 | 32 | #include "timer.h" |
07630cea LP |
33 | #include "unit-name.h" |
34 | #include "unit.h" | |
b1d4f8e1 | 35 | #include "user-util.h" |
871d7de4 LP |
36 | |
37 | static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = { | |
38 | [TIMER_DEAD] = UNIT_INACTIVE, | |
39 | [TIMER_WAITING] = UNIT_ACTIVE, | |
40 | [TIMER_RUNNING] = UNIT_ACTIVE, | |
41 | [TIMER_ELAPSED] = UNIT_ACTIVE, | |
fdf20a31 | 42 | [TIMER_FAILED] = UNIT_FAILED |
871d7de4 LP |
43 | }; |
44 | ||
718db961 LP |
45 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata); |
46 | ||
871d7de4 LP |
47 | static void timer_init(Unit *u) { |
48 | Timer *t = TIMER(u); | |
49 | ||
50 | assert(u); | |
ac155bb8 | 51 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 52 | |
3a43da28 KS |
53 | t->next_elapse_monotonic_or_boottime = USEC_INFINITY; |
54 | t->next_elapse_realtime = USEC_INFINITY; | |
bd8f585b | 55 | t->accuracy_usec = u->manager->default_timer_accuracy_usec; |
871d7de4 | 56 | } |
5cb5a6ff | 57 | |
74051b9b | 58 | void timer_free_values(Timer *t) { |
871d7de4 LP |
59 | TimerValue *v; |
60 | ||
61 | assert(t); | |
62 | ||
63 | while ((v = t->values)) { | |
71fda00f | 64 | LIST_REMOVE(value, t->values, v); |
3e044c49 | 65 | calendar_spec_free(v->calendar_spec); |
871d7de4 LP |
66 | free(v); |
67 | } | |
74051b9b LP |
68 | } |
69 | ||
70 | static void timer_done(Unit *u) { | |
71 | Timer *t = TIMER(u); | |
72 | ||
73 | assert(t); | |
74 | ||
75 | timer_free_values(t); | |
871d7de4 | 76 | |
718db961 LP |
77 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
78 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
06642d17 LP |
79 | |
80 | free(t->stamp_path); | |
871d7de4 LP |
81 | } |
82 | ||
83 | static int timer_verify(Timer *t) { | |
84 | assert(t); | |
85 | ||
1124fe6f | 86 | if (UNIT(t)->load_state != UNIT_LOADED) |
871d7de4 LP |
87 | return 0; |
88 | ||
89 | if (!t->values) { | |
f2341e0a | 90 | log_unit_error(UNIT(t), "Timer unit lacks value setting. Refusing."); |
871d7de4 LP |
91 | return -EINVAL; |
92 | } | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
6c155fe3 LP |
97 | static int timer_add_default_dependencies(Timer *t) { |
98 | int r; | |
19f8d037 | 99 | TimerValue *v; |
6c155fe3 LP |
100 | |
101 | assert(t); | |
102 | ||
e3d84721 LP |
103 | r = unit_add_dependency_by_name(UNIT(t), UNIT_BEFORE, SPECIAL_TIMERS_TARGET, NULL, true); |
104 | if (r < 0) | |
105 | return r; | |
2a77d31d | 106 | |
b2c23da8 | 107 | if (UNIT(t)->manager->running_as == MANAGER_SYSTEM) { |
36697dc0 LP |
108 | r = unit_add_two_dependencies_by_name(UNIT(t), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true); |
109 | if (r < 0) | |
6c155fe3 | 110 | return r; |
19f8d037 TGR |
111 | |
112 | LIST_FOREACH(value, v, t->values) { | |
113 | if (v->base == TIMER_CALENDAR) { | |
114 | r = unit_add_dependency_by_name(UNIT(t), UNIT_AFTER, SPECIAL_TIME_SYNC_TARGET, NULL, true); | |
115 | if (r < 0) | |
116 | return r; | |
117 | break; | |
118 | } | |
119 | } | |
2a77d31d | 120 | } |
6c155fe3 | 121 | |
ead8e478 | 122 | return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
6c155fe3 LP |
123 | } |
124 | ||
06642d17 LP |
125 | static int timer_setup_persistent(Timer *t) { |
126 | int r; | |
127 | ||
128 | assert(t); | |
129 | ||
130 | if (!t->persistent) | |
131 | return 0; | |
132 | ||
b2c23da8 | 133 | if (UNIT(t)->manager->running_as == MANAGER_SYSTEM) { |
06642d17 LP |
134 | |
135 | r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers"); | |
136 | if (r < 0) | |
137 | return r; | |
138 | ||
139 | t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id); | |
140 | } else { | |
141 | const char *e; | |
142 | ||
143 | e = getenv("XDG_DATA_HOME"); | |
144 | if (e) | |
bd34b310 | 145 | t->stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id, NULL); |
06642d17 LP |
146 | else { |
147 | ||
148 | _cleanup_free_ char *h = NULL; | |
149 | ||
150 | r = get_home_dir(&h); | |
23bbb0de | 151 | if (r < 0) |
f2341e0a | 152 | return log_unit_error_errno(UNIT(t), r, "Failed to determine home directory: %m"); |
06642d17 LP |
153 | |
154 | t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL); | |
155 | } | |
156 | } | |
157 | ||
158 | if (!t->stamp_path) | |
159 | return log_oom(); | |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
871d7de4 LP |
164 | static int timer_load(Unit *u) { |
165 | Timer *t = TIMER(u); | |
166 | int r; | |
167 | ||
168 | assert(u); | |
ac155bb8 | 169 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 170 | |
36697dc0 LP |
171 | r = unit_load_fragment_and_dropin(u); |
172 | if (r < 0) | |
871d7de4 LP |
173 | return r; |
174 | ||
ac155bb8 | 175 | if (u->load_state == UNIT_LOADED) { |
871d7de4 | 176 | |
3ecaa09b | 177 | if (set_isempty(u->dependencies[UNIT_TRIGGERS])) { |
57020a3a LP |
178 | Unit *x; |
179 | ||
180 | r = unit_load_related_unit(u, ".service", &x); | |
181 | if (r < 0) | |
871d7de4 LP |
182 | return r; |
183 | ||
3ecaa09b LP |
184 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
185 | if (r < 0) | |
186 | return r; | |
57020a3a LP |
187 | } |
188 | ||
06642d17 LP |
189 | r = timer_setup_persistent(t); |
190 | if (r < 0) | |
191 | return r; | |
192 | ||
193 | if (u->default_dependencies) { | |
36697dc0 LP |
194 | r = timer_add_default_dependencies(t); |
195 | if (r < 0) | |
a40eb732 | 196 | return r; |
36697dc0 | 197 | } |
871d7de4 LP |
198 | } |
199 | ||
200 | return timer_verify(t); | |
201 | } | |
202 | ||
203 | static void timer_dump(Unit *u, FILE *f, const char *prefix) { | |
9f5eb56a | 204 | char buf[FORMAT_TIMESPAN_MAX]; |
871d7de4 | 205 | Timer *t = TIMER(u); |
3ecaa09b | 206 | Unit *trigger; |
871d7de4 | 207 | TimerValue *v; |
034c6ed7 | 208 | |
3ecaa09b LP |
209 | trigger = UNIT_TRIGGER(u); |
210 | ||
871d7de4 LP |
211 | fprintf(f, |
212 | "%sTimer State: %s\n" | |
067d72c9 | 213 | "%sResult: %s\n" |
9f5eb56a | 214 | "%sUnit: %s\n" |
dedabea4 LP |
215 | "%sPersistent: %s\n" |
216 | "%sWakeSystem: %s\n" | |
9f5eb56a | 217 | "%sAccuracy: %s\n", |
871d7de4 | 218 | prefix, timer_state_to_string(t->state), |
067d72c9 | 219 | prefix, timer_result_to_string(t->result), |
9f5eb56a | 220 | prefix, trigger ? trigger->id : "n/a", |
dedabea4 LP |
221 | prefix, yes_no(t->persistent), |
222 | prefix, yes_no(t->wake_system), | |
9f5eb56a | 223 | prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1)); |
871d7de4 | 224 | |
36697dc0 LP |
225 | LIST_FOREACH(value, v, t->values) { |
226 | ||
227 | if (v->base == TIMER_CALENDAR) { | |
228 | _cleanup_free_ char *p = NULL; | |
229 | ||
230 | calendar_spec_to_string(v->calendar_spec, &p); | |
231 | ||
232 | fprintf(f, | |
233 | "%s%s: %s\n", | |
234 | prefix, | |
235 | timer_base_to_string(v->base), | |
236 | strna(p)); | |
237 | } else { | |
238 | char timespan1[FORMAT_TIMESPAN_MAX]; | |
239 | ||
240 | fprintf(f, | |
241 | "%s%s: %s\n", | |
242 | prefix, | |
243 | timer_base_to_string(v->base), | |
b1d6dcf5 | 244 | format_timespan(timespan1, sizeof(timespan1), v->value, 0)); |
36697dc0 LP |
245 | } |
246 | } | |
871d7de4 LP |
247 | } |
248 | ||
249 | static void timer_set_state(Timer *t, TimerState state) { | |
250 | TimerState old_state; | |
034c6ed7 | 251 | assert(t); |
871d7de4 LP |
252 | |
253 | old_state = t->state; | |
254 | t->state = state; | |
255 | ||
36697dc0 | 256 | if (state != TIMER_WAITING) { |
718db961 LP |
257 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
258 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
36697dc0 | 259 | } |
871d7de4 LP |
260 | |
261 | if (state != old_state) | |
f2341e0a | 262 | log_unit_debug(UNIT(t), "Changed %s -> %s", timer_state_to_string(old_state), timer_state_to_string(state)); |
871d7de4 | 263 | |
e2f3b44c | 264 | unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); |
871d7de4 LP |
265 | } |
266 | ||
267 | static void timer_enter_waiting(Timer *t, bool initial); | |
268 | ||
be847e82 | 269 | static int timer_coldplug(Unit *u) { |
871d7de4 LP |
270 | Timer *t = TIMER(u); |
271 | ||
272 | assert(t); | |
273 | assert(t->state == TIMER_DEAD); | |
274 | ||
275 | if (t->deserialized_state != t->state) { | |
276 | ||
be847e82 LP |
277 | if (t->deserialized_state == TIMER_WAITING) |
278 | timer_enter_waiting(t, false); | |
279 | else | |
871d7de4 LP |
280 | timer_set_state(t, t->deserialized_state); |
281 | } | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
067d72c9 | 286 | static void timer_enter_dead(Timer *t, TimerResult f) { |
871d7de4 LP |
287 | assert(t); |
288 | ||
067d72c9 LP |
289 | if (f != TIMER_SUCCESS) |
290 | t->result = f; | |
871d7de4 | 291 | |
067d72c9 | 292 | timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); |
871d7de4 LP |
293 | } |
294 | ||
dedabea4 LP |
295 | static usec_t monotonic_to_boottime(usec_t t) { |
296 | usec_t a, b; | |
297 | ||
298 | if (t <= 0) | |
299 | return 0; | |
300 | ||
301 | a = now(CLOCK_BOOTTIME); | |
302 | b = now(CLOCK_MONOTONIC); | |
303 | ||
304 | if (t + a > b) | |
305 | return t + a - b; | |
306 | else | |
307 | return 0; | |
308 | } | |
309 | ||
871d7de4 | 310 | static void timer_enter_waiting(Timer *t, bool initial) { |
36697dc0 | 311 | bool found_monotonic = false, found_realtime = false; |
dedabea4 LP |
312 | usec_t ts_realtime, ts_monotonic; |
313 | usec_t base = 0; | |
314 | TimerValue *v; | |
871d7de4 LP |
315 | int r; |
316 | ||
dedabea4 LP |
317 | /* If we shall wake the system we use the boottime clock |
318 | * rather than the monotonic clock. */ | |
319 | ||
320 | ts_realtime = now(CLOCK_REALTIME); | |
321 | ts_monotonic = now(t->wake_system ? CLOCK_BOOTTIME : CLOCK_MONOTONIC); | |
322 | t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0; | |
871d7de4 LP |
323 | |
324 | LIST_FOREACH(value, v, t->values) { | |
325 | ||
326 | if (v->disabled) | |
327 | continue; | |
328 | ||
36697dc0 | 329 | if (v->base == TIMER_CALENDAR) { |
06642d17 LP |
330 | usec_t b; |
331 | ||
332 | /* If we know the last time this was | |
333 | * triggered, schedule the job based relative | |
334 | * to that. If we don't just start from | |
335 | * now. */ | |
36697dc0 | 336 | |
dedabea4 | 337 | b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime; |
06642d17 LP |
338 | |
339 | r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); | |
36697dc0 LP |
340 | if (r < 0) |
341 | continue; | |
342 | ||
36697dc0 LP |
343 | if (!found_realtime) |
344 | t->next_elapse_realtime = v->next_elapse; | |
10717a1a | 345 | else |
36697dc0 | 346 | t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); |
871d7de4 | 347 | |
36697dc0 | 348 | found_realtime = true; |
871d7de4 | 349 | |
36697dc0 LP |
350 | } else { |
351 | switch (v->base) { | |
871d7de4 | 352 | |
36697dc0 LP |
353 | case TIMER_ACTIVE: |
354 | if (state_translation_table[t->state] == UNIT_ACTIVE) | |
355 | base = UNIT(t)->inactive_exit_timestamp.monotonic; | |
356 | else | |
dedabea4 | 357 | base = ts_monotonic; |
36697dc0 | 358 | break; |
871d7de4 | 359 | |
36697dc0 LP |
360 | case TIMER_BOOT: |
361 | /* CLOCK_MONOTONIC equals the uptime on Linux */ | |
362 | base = 0; | |
363 | break; | |
871d7de4 | 364 | |
36697dc0 LP |
365 | case TIMER_STARTUP: |
366 | base = UNIT(t)->manager->userspace_timestamp.monotonic; | |
367 | break; | |
871d7de4 | 368 | |
36697dc0 | 369 | case TIMER_UNIT_ACTIVE: |
871d7de4 | 370 | |
e41e1943 LP |
371 | base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic; |
372 | ||
373 | if (base <= 0) | |
06642d17 | 374 | base = t->last_trigger.monotonic; |
e41e1943 LP |
375 | |
376 | if (base <= 0) | |
36697dc0 | 377 | continue; |
871d7de4 | 378 | |
36697dc0 | 379 | break; |
871d7de4 | 380 | |
36697dc0 | 381 | case TIMER_UNIT_INACTIVE: |
871d7de4 | 382 | |
e41e1943 LP |
383 | base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic; |
384 | ||
385 | if (base <= 0) | |
06642d17 | 386 | base = t->last_trigger.monotonic; |
e41e1943 LP |
387 | |
388 | if (base <= 0) | |
36697dc0 | 389 | continue; |
871d7de4 | 390 | |
36697dc0 | 391 | break; |
871d7de4 | 392 | |
36697dc0 LP |
393 | default: |
394 | assert_not_reached("Unknown timer base"); | |
395 | } | |
871d7de4 | 396 | |
dedabea4 LP |
397 | if (t->wake_system) |
398 | base = monotonic_to_boottime(base); | |
399 | ||
36697dc0 LP |
400 | v->next_elapse = base + v->value; |
401 | ||
dedabea4 | 402 | if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { |
e41e1943 | 403 | /* This is a one time trigger, disable it now */ |
36697dc0 LP |
404 | v->disabled = true; |
405 | continue; | |
406 | } | |
407 | ||
408 | if (!found_monotonic) | |
dedabea4 | 409 | t->next_elapse_monotonic_or_boottime = v->next_elapse; |
36697dc0 | 410 | else |
dedabea4 | 411 | t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse); |
36697dc0 LP |
412 | |
413 | found_monotonic = true; | |
414 | } | |
871d7de4 LP |
415 | } |
416 | ||
36697dc0 | 417 | if (!found_monotonic && !found_realtime) { |
f2341e0a | 418 | log_unit_debug(UNIT(t), "Timer is elapsed."); |
871d7de4 LP |
419 | timer_set_state(t, TIMER_ELAPSED); |
420 | return; | |
421 | } | |
422 | ||
36697dc0 LP |
423 | if (found_monotonic) { |
424 | char buf[FORMAT_TIMESPAN_MAX]; | |
dedabea4 | 425 | |
f2341e0a | 426 | 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 | 427 | |
718db961 | 428 | if (t->monotonic_event_source) { |
dedabea4 | 429 | r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime); |
718db961 LP |
430 | if (r < 0) |
431 | goto fail; | |
432 | ||
433 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT); | |
cbf60d0a LP |
434 | if (r < 0) |
435 | goto fail; | |
436 | } else { | |
437 | ||
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); |
cbf60d0a LP |
444 | if (r < 0) |
445 | goto fail; | |
718db961 | 446 | |
cbf60d0a LP |
447 | (void) sd_event_source_set_description(t->monotonic_event_source, "timer-monotonic"); |
448 | } | |
7dfbe2e3 | 449 | |
718db961 | 450 | } else if (t->monotonic_event_source) { |
718db961 | 451 | |
06642d17 | 452 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_OFF); |
718db961 LP |
453 | if (r < 0) |
454 | goto fail; | |
455 | } | |
36697dc0 LP |
456 | |
457 | if (found_realtime) { | |
458 | char buf[FORMAT_TIMESTAMP_MAX]; | |
f2341e0a | 459 | log_unit_debug(UNIT(t), "Realtime timer elapses at %s.", format_timestamp(buf, sizeof(buf), t->next_elapse_realtime)); |
36697dc0 | 460 | |
718db961 LP |
461 | if (t->realtime_event_source) { |
462 | r = sd_event_source_set_time(t->realtime_event_source, t->next_elapse_realtime); | |
463 | if (r < 0) | |
464 | goto fail; | |
465 | ||
466 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_ONESHOT); | |
cbf60d0a LP |
467 | if (r < 0) |
468 | goto fail; | |
469 | } else { | |
6a0f1f6d LP |
470 | r = sd_event_add_time( |
471 | UNIT(t)->manager->event, | |
472 | &t->realtime_event_source, | |
dedabea4 | 473 | t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME, |
6a0f1f6d LP |
474 | t->next_elapse_realtime, t->accuracy_usec, |
475 | timer_dispatch, t); | |
cbf60d0a LP |
476 | if (r < 0) |
477 | goto fail; | |
718db961 | 478 | |
cbf60d0a LP |
479 | (void) sd_event_source_set_description(t->realtime_event_source, "timer-realtime"); |
480 | } | |
7dfbe2e3 | 481 | |
718db961 | 482 | } else if (t->realtime_event_source) { |
718db961 | 483 | |
06642d17 | 484 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); |
718db961 LP |
485 | if (r < 0) |
486 | goto fail; | |
487 | } | |
871d7de4 LP |
488 | |
489 | timer_set_state(t, TIMER_WAITING); | |
490 | return; | |
491 | ||
492 | fail: | |
f2341e0a | 493 | log_unit_warning_errno(UNIT(t), r, "Failed to enter waiting state: %m"); |
067d72c9 | 494 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
495 | } |
496 | ||
497 | static void timer_enter_running(Timer *t) { | |
718db961 | 498 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
871d7de4 | 499 | int r; |
398ef8ba | 500 | |
871d7de4 LP |
501 | assert(t); |
502 | ||
ba3e67a7 | 503 | /* Don't start job if we are supposed to go down */ |
31afa0a4 | 504 | if (unit_stop_pending(UNIT(t))) |
ba3e67a7 LP |
505 | return; |
506 | ||
3ecaa09b LP |
507 | r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)), |
508 | JOB_REPLACE, true, &error, NULL); | |
36697dc0 | 509 | if (r < 0) |
871d7de4 LP |
510 | goto fail; |
511 | ||
06642d17 LP |
512 | dual_timestamp_get(&t->last_trigger); |
513 | ||
472fc28f | 514 | if (t->stamp_path) |
fed1e721 | 515 | touch_file(t->stamp_path, true, t->last_trigger.realtime, UID_INVALID, GID_INVALID, 0); |
e41e1943 | 516 | |
871d7de4 LP |
517 | timer_set_state(t, TIMER_RUNNING); |
518 | return; | |
519 | ||
520 | fail: | |
f2341e0a | 521 | log_unit_warning(UNIT(t), "Failed to queue unit startup job: %s", 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) | |
f2341e0a | 602 | log_unit_debug(u, "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) | |
f2341e0a | 610 | log_unit_debug(u, "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) | |
f2341e0a | 617 | log_unit_debug(u, "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) | |
f2341e0a | 623 | log_unit_debug(u, "Failed to parse last-trigger-monotonic value: %s", value); |
067d72c9 | 624 | |
871d7de4 | 625 | } else |
f2341e0a | 626 | log_unit_debug(u, "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 | |
f2341e0a | 651 | log_unit_debug(UNIT(t), "Timer elapsed."); |
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))) { |
f2341e0a | 684 | log_unit_debug(UNIT(t), "Got notified about unit deactivation."); |
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 | ||
f2341e0a | 717 | log_unit_debug(u, "Time change, recalculating next elapse."); |
8742514c LP |
718 | timer_enter_waiting(t, false); |
719 | } | |
720 | ||
871d7de4 | 721 | static const char* const timer_base_table[_TIMER_BASE_MAX] = { |
03fae018 LP |
722 | [TIMER_ACTIVE] = "OnActiveSec", |
723 | [TIMER_BOOT] = "OnBootSec", | |
724 | [TIMER_STARTUP] = "OnStartupSec", | |
725 | [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", | |
36697dc0 LP |
726 | [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", |
727 | [TIMER_CALENDAR] = "OnCalendar" | |
871d7de4 LP |
728 | }; |
729 | ||
730 | DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); | |
731 | ||
067d72c9 LP |
732 | static const char* const timer_result_table[_TIMER_RESULT_MAX] = { |
733 | [TIMER_SUCCESS] = "success", | |
734 | [TIMER_FAILURE_RESOURCES] = "resources" | |
735 | }; | |
736 | ||
737 | DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); | |
738 | ||
87f0e418 | 739 | const UnitVTable timer_vtable = { |
7d17cfbc | 740 | .object_size = sizeof(Timer), |
718db961 | 741 | |
f975e971 LP |
742 | .sections = |
743 | "Unit\0" | |
744 | "Timer\0" | |
745 | "Install\0", | |
d8a812d1 | 746 | .private_section = "Timer", |
5cb5a6ff | 747 | |
871d7de4 | 748 | .init = timer_init, |
034c6ed7 | 749 | .done = timer_done, |
871d7de4 LP |
750 | .load = timer_load, |
751 | ||
752 | .coldplug = timer_coldplug, | |
753 | ||
754 | .dump = timer_dump, | |
755 | ||
756 | .start = timer_start, | |
757 | .stop = timer_stop, | |
758 | ||
759 | .serialize = timer_serialize, | |
760 | .deserialize_item = timer_deserialize_item, | |
761 | ||
762 | .active_state = timer_active_state, | |
763 | .sub_state_to_string = timer_sub_state_to_string, | |
764 | ||
3ecaa09b LP |
765 | .trigger_notify = timer_trigger_notify, |
766 | ||
fdf20a31 | 767 | .reset_failed = timer_reset_failed, |
8742514c | 768 | .time_change = timer_time_change, |
5632e374 | 769 | |
718db961 | 770 | .bus_vtable = bus_timer_vtable, |
d8a812d1 WC |
771 | .bus_set_property = bus_timer_set_property, |
772 | ||
773 | .can_transient = true, | |
5cb5a6ff | 774 | }; |