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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" | |
06642d17 | 31 | #include "mkdir.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 | |
dedabea4 | 49 | t->next_elapse_monotonic_or_boottime = (usec_t) -1; |
36697dc0 | 50 | t->next_elapse_realtime = (usec_t) -1; |
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); |
36697dc0 LP |
61 | |
62 | if (v->calendar_spec) | |
63 | calendar_spec_free(v->calendar_spec); | |
64 | ||
871d7de4 LP |
65 | free(v); |
66 | } | |
74051b9b LP |
67 | } |
68 | ||
69 | static void timer_done(Unit *u) { | |
70 | Timer *t = TIMER(u); | |
71 | ||
72 | assert(t); | |
73 | ||
74 | timer_free_values(t); | |
871d7de4 | 75 | |
718db961 LP |
76 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
77 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
06642d17 LP |
78 | |
79 | free(t->stamp_path); | |
871d7de4 LP |
80 | } |
81 | ||
82 | static int timer_verify(Timer *t) { | |
83 | assert(t); | |
84 | ||
1124fe6f | 85 | if (UNIT(t)->load_state != UNIT_LOADED) |
871d7de4 LP |
86 | return 0; |
87 | ||
88 | if (!t->values) { | |
06642d17 | 89 | log_error_unit(UNIT(t)->id, "%s lacks value setting. Refusing.", UNIT(t)->id); |
871d7de4 LP |
90 | return -EINVAL; |
91 | } | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
6c155fe3 LP |
96 | static int timer_add_default_dependencies(Timer *t) { |
97 | int r; | |
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; |
2a77d31d | 109 | } |
6c155fe3 | 110 | |
ead8e478 | 111 | return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
6c155fe3 LP |
112 | } |
113 | ||
472fc28f TB |
114 | static void update_stampfile(Timer *t, usec_t timestamp) { |
115 | _cleanup_close_ int fd = -1; | |
116 | ||
117 | mkdir_parents_label(t->stamp_path, 0755); | |
118 | ||
119 | /* Update the file atime + mtime, if we can */ | |
120 | fd = open(t->stamp_path, O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0644); | |
121 | if (fd >= 0) { | |
122 | struct timespec ts[2]; | |
123 | ||
124 | timespec_store(&ts[0], timestamp); | |
125 | ts[1] = ts[0]; | |
126 | ||
127 | futimens(fd, ts); | |
128 | } | |
129 | } | |
130 | ||
06642d17 LP |
131 | static int timer_setup_persistent(Timer *t) { |
132 | int r; | |
133 | ||
134 | assert(t); | |
135 | ||
136 | if (!t->persistent) | |
137 | return 0; | |
138 | ||
139 | if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) { | |
140 | ||
141 | r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers"); | |
142 | if (r < 0) | |
143 | return r; | |
144 | ||
145 | t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id); | |
146 | } else { | |
147 | const char *e; | |
148 | ||
149 | e = getenv("XDG_DATA_HOME"); | |
150 | if (e) | |
151 | t->stamp_path = strjoin(e, "/systemd/timers/", UNIT(t)->id, NULL); | |
152 | else { | |
153 | ||
154 | _cleanup_free_ char *h = NULL; | |
155 | ||
156 | r = get_home_dir(&h); | |
157 | if (r < 0) { | |
158 | log_error("Failed to determine home directory: %s", strerror(-r)); | |
159 | return r; | |
160 | } | |
161 | ||
162 | t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL); | |
163 | } | |
164 | } | |
165 | ||
166 | if (!t->stamp_path) | |
167 | return log_oom(); | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
871d7de4 LP |
172 | static int timer_load(Unit *u) { |
173 | Timer *t = TIMER(u); | |
174 | int r; | |
175 | ||
176 | assert(u); | |
ac155bb8 | 177 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 178 | |
36697dc0 LP |
179 | r = unit_load_fragment_and_dropin(u); |
180 | if (r < 0) | |
871d7de4 LP |
181 | return r; |
182 | ||
ac155bb8 | 183 | if (u->load_state == UNIT_LOADED) { |
871d7de4 | 184 | |
3ecaa09b | 185 | if (set_isempty(u->dependencies[UNIT_TRIGGERS])) { |
57020a3a LP |
186 | Unit *x; |
187 | ||
188 | r = unit_load_related_unit(u, ".service", &x); | |
189 | if (r < 0) | |
871d7de4 LP |
190 | return r; |
191 | ||
3ecaa09b LP |
192 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
193 | if (r < 0) | |
194 | return r; | |
57020a3a LP |
195 | } |
196 | ||
06642d17 LP |
197 | r = timer_setup_persistent(t); |
198 | if (r < 0) | |
199 | return r; | |
200 | ||
201 | if (u->default_dependencies) { | |
36697dc0 LP |
202 | r = timer_add_default_dependencies(t); |
203 | if (r < 0) | |
a40eb732 | 204 | return r; |
36697dc0 | 205 | } |
871d7de4 LP |
206 | } |
207 | ||
208 | return timer_verify(t); | |
209 | } | |
210 | ||
211 | static void timer_dump(Unit *u, FILE *f, const char *prefix) { | |
9f5eb56a | 212 | char buf[FORMAT_TIMESPAN_MAX]; |
871d7de4 | 213 | Timer *t = TIMER(u); |
3ecaa09b | 214 | Unit *trigger; |
871d7de4 | 215 | TimerValue *v; |
034c6ed7 | 216 | |
3ecaa09b LP |
217 | trigger = UNIT_TRIGGER(u); |
218 | ||
871d7de4 LP |
219 | fprintf(f, |
220 | "%sTimer State: %s\n" | |
067d72c9 | 221 | "%sResult: %s\n" |
9f5eb56a | 222 | "%sUnit: %s\n" |
dedabea4 LP |
223 | "%sPersistent: %s\n" |
224 | "%sWakeSystem: %s\n" | |
9f5eb56a | 225 | "%sAccuracy: %s\n", |
871d7de4 | 226 | prefix, timer_state_to_string(t->state), |
067d72c9 | 227 | prefix, timer_result_to_string(t->result), |
9f5eb56a | 228 | prefix, trigger ? trigger->id : "n/a", |
dedabea4 LP |
229 | prefix, yes_no(t->persistent), |
230 | prefix, yes_no(t->wake_system), | |
9f5eb56a | 231 | prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1)); |
871d7de4 | 232 | |
36697dc0 LP |
233 | LIST_FOREACH(value, v, t->values) { |
234 | ||
235 | if (v->base == TIMER_CALENDAR) { | |
236 | _cleanup_free_ char *p = NULL; | |
237 | ||
238 | calendar_spec_to_string(v->calendar_spec, &p); | |
239 | ||
240 | fprintf(f, | |
241 | "%s%s: %s\n", | |
242 | prefix, | |
243 | timer_base_to_string(v->base), | |
244 | strna(p)); | |
245 | } else { | |
246 | char timespan1[FORMAT_TIMESPAN_MAX]; | |
247 | ||
248 | fprintf(f, | |
249 | "%s%s: %s\n", | |
250 | prefix, | |
251 | timer_base_to_string(v->base), | |
2fa4092c | 252 | strna(format_timespan(timespan1, sizeof(timespan1), v->value, 0))); |
36697dc0 LP |
253 | } |
254 | } | |
871d7de4 LP |
255 | } |
256 | ||
257 | static void timer_set_state(Timer *t, TimerState state) { | |
258 | TimerState old_state; | |
034c6ed7 | 259 | assert(t); |
871d7de4 LP |
260 | |
261 | old_state = t->state; | |
262 | t->state = state; | |
263 | ||
36697dc0 | 264 | if (state != TIMER_WAITING) { |
718db961 LP |
265 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
266 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
36697dc0 | 267 | } |
871d7de4 LP |
268 | |
269 | if (state != old_state) | |
66870f90 ZJS |
270 | log_debug_unit(UNIT(t)->id, |
271 | "%s changed %s -> %s", UNIT(t)->id, | |
272 | timer_state_to_string(old_state), | |
273 | timer_state_to_string(state)); | |
871d7de4 | 274 | |
e2f3b44c | 275 | unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); |
871d7de4 LP |
276 | } |
277 | ||
278 | static void timer_enter_waiting(Timer *t, bool initial); | |
279 | ||
280 | static int timer_coldplug(Unit *u) { | |
281 | Timer *t = TIMER(u); | |
282 | ||
283 | assert(t); | |
284 | assert(t->state == TIMER_DEAD); | |
285 | ||
286 | if (t->deserialized_state != t->state) { | |
287 | ||
b363ca6f | 288 | if (t->deserialized_state == TIMER_WAITING) |
871d7de4 LP |
289 | timer_enter_waiting(t, false); |
290 | else | |
291 | timer_set_state(t, t->deserialized_state); | |
292 | } | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
067d72c9 | 297 | static void timer_enter_dead(Timer *t, TimerResult f) { |
871d7de4 LP |
298 | assert(t); |
299 | ||
067d72c9 LP |
300 | if (f != TIMER_SUCCESS) |
301 | t->result = f; | |
871d7de4 | 302 | |
067d72c9 | 303 | timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); |
871d7de4 LP |
304 | } |
305 | ||
dedabea4 LP |
306 | static usec_t monotonic_to_boottime(usec_t t) { |
307 | usec_t a, b; | |
308 | ||
309 | if (t <= 0) | |
310 | return 0; | |
311 | ||
312 | a = now(CLOCK_BOOTTIME); | |
313 | b = now(CLOCK_MONOTONIC); | |
314 | ||
315 | if (t + a > b) | |
316 | return t + a - b; | |
317 | else | |
318 | return 0; | |
319 | } | |
320 | ||
871d7de4 | 321 | static void timer_enter_waiting(Timer *t, bool initial) { |
36697dc0 | 322 | bool found_monotonic = false, found_realtime = false; |
dedabea4 LP |
323 | usec_t ts_realtime, ts_monotonic; |
324 | usec_t base = 0; | |
325 | TimerValue *v; | |
871d7de4 LP |
326 | int r; |
327 | ||
dedabea4 LP |
328 | /* If we shall wake the system we use the boottime clock |
329 | * rather than the monotonic clock. */ | |
330 | ||
331 | ts_realtime = now(CLOCK_REALTIME); | |
332 | ts_monotonic = now(t->wake_system ? CLOCK_BOOTTIME : CLOCK_MONOTONIC); | |
333 | t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0; | |
871d7de4 LP |
334 | |
335 | LIST_FOREACH(value, v, t->values) { | |
336 | ||
337 | if (v->disabled) | |
338 | continue; | |
339 | ||
36697dc0 | 340 | if (v->base == TIMER_CALENDAR) { |
06642d17 LP |
341 | usec_t b; |
342 | ||
343 | /* If we know the last time this was | |
344 | * triggered, schedule the job based relative | |
345 | * to that. If we don't just start from | |
346 | * now. */ | |
36697dc0 | 347 | |
dedabea4 | 348 | b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime; |
06642d17 LP |
349 | |
350 | r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); | |
36697dc0 LP |
351 | if (r < 0) |
352 | continue; | |
353 | ||
36697dc0 LP |
354 | if (!found_realtime) |
355 | t->next_elapse_realtime = v->next_elapse; | |
10717a1a | 356 | else |
36697dc0 | 357 | t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); |
871d7de4 | 358 | |
36697dc0 | 359 | found_realtime = true; |
871d7de4 | 360 | |
36697dc0 LP |
361 | } else { |
362 | switch (v->base) { | |
871d7de4 | 363 | |
36697dc0 LP |
364 | case TIMER_ACTIVE: |
365 | if (state_translation_table[t->state] == UNIT_ACTIVE) | |
366 | base = UNIT(t)->inactive_exit_timestamp.monotonic; | |
367 | else | |
dedabea4 | 368 | base = ts_monotonic; |
36697dc0 | 369 | break; |
871d7de4 | 370 | |
36697dc0 LP |
371 | case TIMER_BOOT: |
372 | /* CLOCK_MONOTONIC equals the uptime on Linux */ | |
373 | base = 0; | |
374 | break; | |
871d7de4 | 375 | |
36697dc0 LP |
376 | case TIMER_STARTUP: |
377 | base = UNIT(t)->manager->userspace_timestamp.monotonic; | |
378 | break; | |
871d7de4 | 379 | |
36697dc0 | 380 | case TIMER_UNIT_ACTIVE: |
871d7de4 | 381 | |
e41e1943 LP |
382 | base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic; |
383 | ||
384 | if (base <= 0) | |
06642d17 | 385 | base = t->last_trigger.monotonic; |
e41e1943 LP |
386 | |
387 | if (base <= 0) | |
36697dc0 | 388 | continue; |
871d7de4 | 389 | |
36697dc0 | 390 | break; |
871d7de4 | 391 | |
36697dc0 | 392 | case TIMER_UNIT_INACTIVE: |
871d7de4 | 393 | |
e41e1943 LP |
394 | base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic; |
395 | ||
396 | if (base <= 0) | |
06642d17 | 397 | base = t->last_trigger.monotonic; |
e41e1943 LP |
398 | |
399 | if (base <= 0) | |
36697dc0 | 400 | continue; |
871d7de4 | 401 | |
36697dc0 | 402 | break; |
871d7de4 | 403 | |
36697dc0 LP |
404 | default: |
405 | assert_not_reached("Unknown timer base"); | |
406 | } | |
871d7de4 | 407 | |
dedabea4 LP |
408 | if (t->wake_system) |
409 | base = monotonic_to_boottime(base); | |
410 | ||
36697dc0 LP |
411 | v->next_elapse = base + v->value; |
412 | ||
dedabea4 | 413 | if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { |
e41e1943 | 414 | /* This is a one time trigger, disable it now */ |
36697dc0 LP |
415 | v->disabled = true; |
416 | continue; | |
417 | } | |
418 | ||
419 | if (!found_monotonic) | |
dedabea4 | 420 | t->next_elapse_monotonic_or_boottime = v->next_elapse; |
36697dc0 | 421 | else |
dedabea4 | 422 | t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse); |
36697dc0 LP |
423 | |
424 | found_monotonic = true; | |
425 | } | |
871d7de4 LP |
426 | } |
427 | ||
36697dc0 | 428 | if (!found_monotonic && !found_realtime) { |
66870f90 | 429 | log_debug_unit(UNIT(t)->id, "%s: Timer is elapsed.", UNIT(t)->id); |
871d7de4 LP |
430 | timer_set_state(t, TIMER_ELAPSED); |
431 | return; | |
432 | } | |
433 | ||
36697dc0 LP |
434 | if (found_monotonic) { |
435 | char buf[FORMAT_TIMESPAN_MAX]; | |
dedabea4 LP |
436 | |
437 | log_debug_unit(UNIT(t)->id, "%s: Monotonic timer elapses in %s.", | |
438 | UNIT(t)->id, | |
439 | format_timespan(buf, sizeof(buf), t->next_elapse_monotonic_or_boottime > ts_monotonic ? t->next_elapse_monotonic_or_boottime - ts_monotonic : 0, 0)); | |
871d7de4 | 440 | |
718db961 | 441 | if (t->monotonic_event_source) { |
dedabea4 | 442 | r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime); |
718db961 LP |
443 | if (r < 0) |
444 | goto fail; | |
445 | ||
446 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT); | |
447 | } else | |
6a0f1f6d LP |
448 | r = sd_event_add_time( |
449 | UNIT(t)->manager->event, | |
450 | &t->monotonic_event_source, | |
dedabea4 LP |
451 | t->wake_system ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC, |
452 | t->next_elapse_monotonic_or_boottime, t->accuracy_usec, | |
6a0f1f6d | 453 | timer_dispatch, t); |
36697dc0 LP |
454 | if (r < 0) |
455 | goto fail; | |
718db961 LP |
456 | |
457 | } else if (t->monotonic_event_source) { | |
718db961 | 458 | |
06642d17 | 459 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_OFF); |
718db961 LP |
460 | if (r < 0) |
461 | goto fail; | |
462 | } | |
36697dc0 LP |
463 | |
464 | if (found_realtime) { | |
465 | char buf[FORMAT_TIMESTAMP_MAX]; | |
06642d17 | 466 | log_debug_unit(UNIT(t)->id, "%s: Realtime timer elapses at %s.", UNIT(t)->id, format_timestamp(buf, sizeof(buf), t->next_elapse_realtime)); |
36697dc0 | 467 | |
718db961 LP |
468 | if (t->realtime_event_source) { |
469 | r = sd_event_source_set_time(t->realtime_event_source, t->next_elapse_realtime); | |
470 | if (r < 0) | |
471 | goto fail; | |
472 | ||
473 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_ONESHOT); | |
474 | } else | |
6a0f1f6d LP |
475 | r = sd_event_add_time( |
476 | UNIT(t)->manager->event, | |
477 | &t->realtime_event_source, | |
dedabea4 | 478 | t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME, |
6a0f1f6d LP |
479 | t->next_elapse_realtime, t->accuracy_usec, |
480 | timer_dispatch, t); | |
36697dc0 LP |
481 | if (r < 0) |
482 | goto fail; | |
718db961 LP |
483 | |
484 | } else if (t->realtime_event_source) { | |
718db961 | 485 | |
06642d17 | 486 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); |
718db961 LP |
487 | if (r < 0) |
488 | goto fail; | |
489 | } | |
871d7de4 LP |
490 | |
491 | timer_set_state(t, TIMER_WAITING); | |
492 | return; | |
493 | ||
494 | fail: | |
06642d17 | 495 | log_warning_unit(UNIT(t)->id, "%s failed to enter waiting state: %s", UNIT(t)->id, strerror(-r)); |
067d72c9 | 496 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
497 | } |
498 | ||
499 | static void timer_enter_running(Timer *t) { | |
718db961 | 500 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
871d7de4 | 501 | int r; |
398ef8ba | 502 | |
871d7de4 LP |
503 | assert(t); |
504 | ||
ba3e67a7 | 505 | /* Don't start job if we are supposed to go down */ |
31afa0a4 | 506 | if (unit_stop_pending(UNIT(t))) |
ba3e67a7 LP |
507 | return; |
508 | ||
3ecaa09b LP |
509 | r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)), |
510 | JOB_REPLACE, true, &error, NULL); | |
36697dc0 | 511 | if (r < 0) |
871d7de4 LP |
512 | goto fail; |
513 | ||
06642d17 LP |
514 | dual_timestamp_get(&t->last_trigger); |
515 | ||
472fc28f TB |
516 | if (t->stamp_path) |
517 | update_stampfile(t, t->last_trigger.realtime); | |
e41e1943 | 518 | |
871d7de4 LP |
519 | timer_set_state(t, TIMER_RUNNING); |
520 | return; | |
521 | ||
522 | fail: | |
66870f90 ZJS |
523 | log_warning_unit(UNIT(t)->id, |
524 | "%s failed to queue unit startup job: %s", | |
718db961 | 525 | UNIT(t)->id, bus_error_message(&error, r)); |
067d72c9 | 526 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
527 | } |
528 | ||
529 | static int timer_start(Unit *u) { | |
530 | Timer *t = TIMER(u); | |
531 | ||
532 | assert(t); | |
fdf20a31 | 533 | assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED); |
01f78473 | 534 | |
3ecaa09b | 535 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 536 | return -ENOENT; |
871d7de4 | 537 | |
06642d17 LP |
538 | t->last_trigger = DUAL_TIMESTAMP_NULL; |
539 | ||
540 | if (t->stamp_path) { | |
541 | struct stat st; | |
542 | ||
543 | if (stat(t->stamp_path, &st) >= 0) | |
544 | t->last_trigger.realtime = timespec_load(&st.st_atim); | |
472fc28f TB |
545 | else if (errno == ENOENT) |
546 | /* The timer has never run before, | |
547 | * make sure a stamp file exists. | |
548 | */ | |
549 | update_stampfile(t, now(CLOCK_REALTIME)); | |
06642d17 LP |
550 | } |
551 | ||
067d72c9 | 552 | t->result = TIMER_SUCCESS; |
871d7de4 LP |
553 | timer_enter_waiting(t, true); |
554 | return 0; | |
555 | } | |
556 | ||
557 | static int timer_stop(Unit *u) { | |
558 | Timer *t = TIMER(u); | |
559 | ||
560 | assert(t); | |
561 | assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); | |
562 | ||
067d72c9 | 563 | timer_enter_dead(t, TIMER_SUCCESS); |
871d7de4 LP |
564 | return 0; |
565 | } | |
566 | ||
567 | static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { | |
568 | Timer *t = TIMER(u); | |
569 | ||
570 | assert(u); | |
571 | assert(f); | |
572 | assert(fds); | |
573 | ||
574 | unit_serialize_item(u, f, "state", timer_state_to_string(t->state)); | |
067d72c9 | 575 | unit_serialize_item(u, f, "result", timer_result_to_string(t->result)); |
871d7de4 | 576 | |
06642d17 LP |
577 | if (t->last_trigger.realtime > 0) |
578 | unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime); | |
579 | ||
580 | if (t->last_trigger.monotonic > 0) | |
581 | unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic); | |
582 | ||
871d7de4 LP |
583 | return 0; |
584 | } | |
585 | ||
586 | static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
587 | Timer *t = TIMER(u); | |
06642d17 | 588 | int r; |
871d7de4 LP |
589 | |
590 | assert(u); | |
591 | assert(key); | |
592 | assert(value); | |
593 | assert(fds); | |
594 | ||
595 | if (streq(key, "state")) { | |
596 | TimerState state; | |
597 | ||
36697dc0 LP |
598 | state = timer_state_from_string(value); |
599 | if (state < 0) | |
66870f90 | 600 | log_debug_unit(u->id, "Failed to parse state value %s", value); |
871d7de4 LP |
601 | else |
602 | t->deserialized_state = state; | |
067d72c9 LP |
603 | } else if (streq(key, "result")) { |
604 | TimerResult f; | |
605 | ||
606 | f = timer_result_from_string(value); | |
607 | if (f < 0) | |
66870f90 | 608 | log_debug_unit(u->id, "Failed to parse result value %s", value); |
067d72c9 LP |
609 | else if (f != TIMER_SUCCESS) |
610 | t->result = f; | |
06642d17 LP |
611 | } else if (streq(key, "last-trigger-realtime")) { |
612 | ||
613 | r = safe_atou64(value, &t->last_trigger.realtime); | |
614 | if (r < 0) | |
615 | log_debug_unit(u->id, "Failed to parse last-trigger-realtime value %s", value); | |
616 | ||
617 | } else if (streq(key, "last-trigger-monotonic")) { | |
618 | ||
619 | r = safe_atou64(value, &t->last_trigger.monotonic); | |
620 | if (r < 0) | |
621 | log_debug_unit(u->id, "Failed to parse last-trigger-monotonic value %s", value); | |
067d72c9 | 622 | |
871d7de4 | 623 | } else |
66870f90 | 624 | log_debug_unit(u->id, "Unknown serialization key '%s'", key); |
871d7de4 LP |
625 | |
626 | return 0; | |
034c6ed7 LP |
627 | } |
628 | ||
44a6b1b6 | 629 | _pure_ static UnitActiveState timer_active_state(Unit *u) { |
871d7de4 LP |
630 | assert(u); |
631 | ||
632 | return state_translation_table[TIMER(u)->state]; | |
633 | } | |
634 | ||
44a6b1b6 | 635 | _pure_ static const char *timer_sub_state_to_string(Unit *u) { |
871d7de4 LP |
636 | assert(u); |
637 | ||
638 | return timer_state_to_string(TIMER(u)->state); | |
639 | } | |
640 | ||
718db961 LP |
641 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) { |
642 | Timer *t = TIMER(userdata); | |
871d7de4 LP |
643 | |
644 | assert(t); | |
5cb5a6ff | 645 | |
871d7de4 | 646 | if (t->state != TIMER_WAITING) |
718db961 | 647 | return 0; |
5cb5a6ff | 648 | |
718db961 | 649 | log_debug_unit(UNIT(t)->id, "Timer elapsed on %s", UNIT(t)->id); |
871d7de4 | 650 | timer_enter_running(t); |
718db961 | 651 | return 0; |
5cb5a6ff LP |
652 | } |
653 | ||
3ecaa09b LP |
654 | static void timer_trigger_notify(Unit *u, Unit *other) { |
655 | Timer *t = TIMER(u); | |
656 | TimerValue *v; | |
871d7de4 | 657 | |
3ecaa09b LP |
658 | assert(u); |
659 | assert(other); | |
871d7de4 | 660 | |
3ecaa09b LP |
661 | if (other->load_state != UNIT_LOADED) |
662 | return; | |
871d7de4 | 663 | |
3ecaa09b LP |
664 | /* Reenable all timers that depend on unit state */ |
665 | LIST_FOREACH(value, v, t->values) | |
666 | if (v->base == TIMER_UNIT_ACTIVE || | |
667 | v->base == TIMER_UNIT_INACTIVE) | |
668 | v->disabled = false; | |
01f78473 | 669 | |
3ecaa09b | 670 | switch (t->state) { |
871d7de4 | 671 | |
3ecaa09b LP |
672 | case TIMER_WAITING: |
673 | case TIMER_ELAPSED: | |
871d7de4 | 674 | |
3ecaa09b LP |
675 | /* Recalculate sleep time */ |
676 | timer_enter_waiting(t, false); | |
677 | break; | |
871d7de4 | 678 | |
3ecaa09b | 679 | case TIMER_RUNNING: |
871d7de4 | 680 | |
3ecaa09b | 681 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) { |
06642d17 | 682 | log_debug_unit(UNIT(t)->id, "%s got notified about unit deactivation.", UNIT(t)->id); |
871d7de4 | 683 | timer_enter_waiting(t, false); |
3ecaa09b LP |
684 | } |
685 | break; | |
871d7de4 | 686 | |
3ecaa09b LP |
687 | case TIMER_DEAD: |
688 | case TIMER_FAILED: | |
689 | break; | |
871d7de4 | 690 | |
3ecaa09b LP |
691 | default: |
692 | assert_not_reached("Unknown timer state"); | |
871d7de4 | 693 | } |
871d7de4 LP |
694 | } |
695 | ||
fdf20a31 | 696 | static void timer_reset_failed(Unit *u) { |
5632e374 LP |
697 | Timer *t = TIMER(u); |
698 | ||
699 | assert(t); | |
700 | ||
fdf20a31 | 701 | if (t->state == TIMER_FAILED) |
5632e374 LP |
702 | timer_set_state(t, TIMER_DEAD); |
703 | ||
067d72c9 | 704 | t->result = TIMER_SUCCESS; |
5632e374 LP |
705 | } |
706 | ||
8742514c LP |
707 | static void timer_time_change(Unit *u) { |
708 | Timer *t = TIMER(u); | |
709 | ||
710 | assert(u); | |
711 | ||
712 | if (t->state != TIMER_WAITING) | |
713 | return; | |
714 | ||
06642d17 | 715 | log_debug_unit(u->id, "%s: time change, recalculating next elapse.", u->id); |
8742514c LP |
716 | timer_enter_waiting(t, false); |
717 | } | |
718 | ||
871d7de4 LP |
719 | static const char* const timer_state_table[_TIMER_STATE_MAX] = { |
720 | [TIMER_DEAD] = "dead", | |
721 | [TIMER_WAITING] = "waiting", | |
722 | [TIMER_RUNNING] = "running", | |
723 | [TIMER_ELAPSED] = "elapsed", | |
fdf20a31 | 724 | [TIMER_FAILED] = "failed" |
871d7de4 LP |
725 | }; |
726 | ||
727 | DEFINE_STRING_TABLE_LOOKUP(timer_state, TimerState); | |
728 | ||
729 | static const char* const timer_base_table[_TIMER_BASE_MAX] = { | |
03fae018 LP |
730 | [TIMER_ACTIVE] = "OnActiveSec", |
731 | [TIMER_BOOT] = "OnBootSec", | |
732 | [TIMER_STARTUP] = "OnStartupSec", | |
733 | [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", | |
36697dc0 LP |
734 | [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", |
735 | [TIMER_CALENDAR] = "OnCalendar" | |
871d7de4 LP |
736 | }; |
737 | ||
738 | DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); | |
739 | ||
067d72c9 LP |
740 | static const char* const timer_result_table[_TIMER_RESULT_MAX] = { |
741 | [TIMER_SUCCESS] = "success", | |
742 | [TIMER_FAILURE_RESOURCES] = "resources" | |
743 | }; | |
744 | ||
745 | DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); | |
746 | ||
87f0e418 | 747 | const UnitVTable timer_vtable = { |
7d17cfbc | 748 | .object_size = sizeof(Timer), |
718db961 | 749 | |
f975e971 LP |
750 | .sections = |
751 | "Unit\0" | |
752 | "Timer\0" | |
753 | "Install\0", | |
5cb5a6ff | 754 | |
871d7de4 | 755 | .init = timer_init, |
034c6ed7 | 756 | .done = timer_done, |
871d7de4 LP |
757 | .load = timer_load, |
758 | ||
759 | .coldplug = timer_coldplug, | |
760 | ||
761 | .dump = timer_dump, | |
762 | ||
763 | .start = timer_start, | |
764 | .stop = timer_stop, | |
765 | ||
766 | .serialize = timer_serialize, | |
767 | .deserialize_item = timer_deserialize_item, | |
768 | ||
769 | .active_state = timer_active_state, | |
770 | .sub_state_to_string = timer_sub_state_to_string, | |
771 | ||
3ecaa09b LP |
772 | .trigger_notify = timer_trigger_notify, |
773 | ||
fdf20a31 | 774 | .reset_failed = timer_reset_failed, |
8742514c | 775 | .time_change = timer_time_change, |
5632e374 | 776 | |
c4e2ceae | 777 | .bus_interface = "org.freedesktop.systemd1.Timer", |
718db961 | 778 | .bus_vtable = bus_timer_vtable, |
5cb5a6ff | 779 | }; |