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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 | |
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); |
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; | |
19f8d037 | 98 | TimerValue *v; |
6c155fe3 LP |
99 | |
100 | assert(t); | |
101 | ||
e3d84721 LP |
102 | r = unit_add_dependency_by_name(UNIT(t), UNIT_BEFORE, SPECIAL_TIMERS_TARGET, NULL, true); |
103 | if (r < 0) | |
104 | return r; | |
2a77d31d | 105 | |
e3d84721 | 106 | if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) { |
36697dc0 LP |
107 | r = unit_add_two_dependencies_by_name(UNIT(t), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true); |
108 | if (r < 0) | |
6c155fe3 | 109 | return r; |
19f8d037 TGR |
110 | |
111 | LIST_FOREACH(value, v, t->values) { | |
112 | if (v->base == TIMER_CALENDAR) { | |
113 | r = unit_add_dependency_by_name(UNIT(t), UNIT_AFTER, SPECIAL_TIME_SYNC_TARGET, NULL, true); | |
114 | if (r < 0) | |
115 | return r; | |
116 | break; | |
117 | } | |
118 | } | |
2a77d31d | 119 | } |
6c155fe3 | 120 | |
ead8e478 | 121 | return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
6c155fe3 LP |
122 | } |
123 | ||
06642d17 LP |
124 | static int timer_setup_persistent(Timer *t) { |
125 | int r; | |
126 | ||
127 | assert(t); | |
128 | ||
129 | if (!t->persistent) | |
130 | return 0; | |
131 | ||
132 | if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) { | |
133 | ||
134 | r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers"); | |
135 | if (r < 0) | |
136 | return r; | |
137 | ||
138 | t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id); | |
139 | } else { | |
140 | const char *e; | |
141 | ||
142 | e = getenv("XDG_DATA_HOME"); | |
143 | if (e) | |
bd34b310 | 144 | t->stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id, NULL); |
06642d17 LP |
145 | else { |
146 | ||
147 | _cleanup_free_ char *h = NULL; | |
148 | ||
149 | r = get_home_dir(&h); | |
150 | if (r < 0) { | |
151 | log_error("Failed to determine home directory: %s", strerror(-r)); | |
152 | return r; | |
153 | } | |
154 | ||
155 | t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL); | |
156 | } | |
157 | } | |
158 | ||
159 | if (!t->stamp_path) | |
160 | return log_oom(); | |
161 | ||
162 | return 0; | |
163 | } | |
164 | ||
871d7de4 LP |
165 | static int timer_load(Unit *u) { |
166 | Timer *t = TIMER(u); | |
167 | int r; | |
168 | ||
169 | assert(u); | |
ac155bb8 | 170 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 171 | |
36697dc0 LP |
172 | r = unit_load_fragment_and_dropin(u); |
173 | if (r < 0) | |
871d7de4 LP |
174 | return r; |
175 | ||
ac155bb8 | 176 | if (u->load_state == UNIT_LOADED) { |
871d7de4 | 177 | |
3ecaa09b | 178 | if (set_isempty(u->dependencies[UNIT_TRIGGERS])) { |
57020a3a LP |
179 | Unit *x; |
180 | ||
181 | r = unit_load_related_unit(u, ".service", &x); | |
182 | if (r < 0) | |
871d7de4 LP |
183 | return r; |
184 | ||
3ecaa09b LP |
185 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
186 | if (r < 0) | |
187 | return r; | |
57020a3a LP |
188 | } |
189 | ||
06642d17 LP |
190 | r = timer_setup_persistent(t); |
191 | if (r < 0) | |
192 | return r; | |
193 | ||
194 | if (u->default_dependencies) { | |
36697dc0 LP |
195 | r = timer_add_default_dependencies(t); |
196 | if (r < 0) | |
a40eb732 | 197 | return r; |
36697dc0 | 198 | } |
871d7de4 LP |
199 | } |
200 | ||
201 | return timer_verify(t); | |
202 | } | |
203 | ||
204 | static void timer_dump(Unit *u, FILE *f, const char *prefix) { | |
9f5eb56a | 205 | char buf[FORMAT_TIMESPAN_MAX]; |
871d7de4 | 206 | Timer *t = TIMER(u); |
3ecaa09b | 207 | Unit *trigger; |
871d7de4 | 208 | TimerValue *v; |
034c6ed7 | 209 | |
3ecaa09b LP |
210 | trigger = UNIT_TRIGGER(u); |
211 | ||
871d7de4 LP |
212 | fprintf(f, |
213 | "%sTimer State: %s\n" | |
067d72c9 | 214 | "%sResult: %s\n" |
9f5eb56a | 215 | "%sUnit: %s\n" |
dedabea4 LP |
216 | "%sPersistent: %s\n" |
217 | "%sWakeSystem: %s\n" | |
9f5eb56a | 218 | "%sAccuracy: %s\n", |
871d7de4 | 219 | prefix, timer_state_to_string(t->state), |
067d72c9 | 220 | prefix, timer_result_to_string(t->result), |
9f5eb56a | 221 | prefix, trigger ? trigger->id : "n/a", |
dedabea4 LP |
222 | prefix, yes_no(t->persistent), |
223 | prefix, yes_no(t->wake_system), | |
9f5eb56a | 224 | prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1)); |
871d7de4 | 225 | |
36697dc0 LP |
226 | LIST_FOREACH(value, v, t->values) { |
227 | ||
228 | if (v->base == TIMER_CALENDAR) { | |
229 | _cleanup_free_ char *p = NULL; | |
230 | ||
231 | calendar_spec_to_string(v->calendar_spec, &p); | |
232 | ||
233 | fprintf(f, | |
234 | "%s%s: %s\n", | |
235 | prefix, | |
236 | timer_base_to_string(v->base), | |
237 | strna(p)); | |
238 | } else { | |
239 | char timespan1[FORMAT_TIMESPAN_MAX]; | |
240 | ||
241 | fprintf(f, | |
242 | "%s%s: %s\n", | |
243 | prefix, | |
244 | timer_base_to_string(v->base), | |
b1d6dcf5 | 245 | format_timespan(timespan1, sizeof(timespan1), v->value, 0)); |
36697dc0 LP |
246 | } |
247 | } | |
871d7de4 LP |
248 | } |
249 | ||
250 | static void timer_set_state(Timer *t, TimerState state) { | |
251 | TimerState old_state; | |
034c6ed7 | 252 | assert(t); |
871d7de4 LP |
253 | |
254 | old_state = t->state; | |
255 | t->state = state; | |
256 | ||
36697dc0 | 257 | if (state != TIMER_WAITING) { |
718db961 LP |
258 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
259 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
36697dc0 | 260 | } |
871d7de4 LP |
261 | |
262 | if (state != old_state) | |
66870f90 ZJS |
263 | log_debug_unit(UNIT(t)->id, |
264 | "%s changed %s -> %s", UNIT(t)->id, | |
265 | timer_state_to_string(old_state), | |
266 | timer_state_to_string(state)); | |
871d7de4 | 267 | |
e2f3b44c | 268 | unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); |
871d7de4 LP |
269 | } |
270 | ||
271 | static void timer_enter_waiting(Timer *t, bool initial); | |
272 | ||
273 | static int timer_coldplug(Unit *u) { | |
274 | Timer *t = TIMER(u); | |
275 | ||
276 | assert(t); | |
277 | assert(t->state == TIMER_DEAD); | |
278 | ||
279 | if (t->deserialized_state != t->state) { | |
280 | ||
b363ca6f | 281 | if (t->deserialized_state == TIMER_WAITING) |
871d7de4 LP |
282 | timer_enter_waiting(t, false); |
283 | else | |
284 | timer_set_state(t, t->deserialized_state); | |
285 | } | |
286 | ||
287 | return 0; | |
288 | } | |
289 | ||
067d72c9 | 290 | static void timer_enter_dead(Timer *t, TimerResult f) { |
871d7de4 LP |
291 | assert(t); |
292 | ||
067d72c9 LP |
293 | if (f != TIMER_SUCCESS) |
294 | t->result = f; | |
871d7de4 | 295 | |
067d72c9 | 296 | timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); |
871d7de4 LP |
297 | } |
298 | ||
dedabea4 LP |
299 | static usec_t monotonic_to_boottime(usec_t t) { |
300 | usec_t a, b; | |
301 | ||
302 | if (t <= 0) | |
303 | return 0; | |
304 | ||
305 | a = now(CLOCK_BOOTTIME); | |
306 | b = now(CLOCK_MONOTONIC); | |
307 | ||
308 | if (t + a > b) | |
309 | return t + a - b; | |
310 | else | |
311 | return 0; | |
312 | } | |
313 | ||
871d7de4 | 314 | static void timer_enter_waiting(Timer *t, bool initial) { |
36697dc0 | 315 | bool found_monotonic = false, found_realtime = false; |
dedabea4 LP |
316 | usec_t ts_realtime, ts_monotonic; |
317 | usec_t base = 0; | |
318 | TimerValue *v; | |
871d7de4 LP |
319 | int r; |
320 | ||
dedabea4 LP |
321 | /* If we shall wake the system we use the boottime clock |
322 | * rather than the monotonic clock. */ | |
323 | ||
324 | ts_realtime = now(CLOCK_REALTIME); | |
325 | ts_monotonic = now(t->wake_system ? CLOCK_BOOTTIME : CLOCK_MONOTONIC); | |
326 | t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0; | |
871d7de4 LP |
327 | |
328 | LIST_FOREACH(value, v, t->values) { | |
329 | ||
330 | if (v->disabled) | |
331 | continue; | |
332 | ||
36697dc0 | 333 | if (v->base == TIMER_CALENDAR) { |
06642d17 LP |
334 | usec_t b; |
335 | ||
336 | /* If we know the last time this was | |
337 | * triggered, schedule the job based relative | |
338 | * to that. If we don't just start from | |
339 | * now. */ | |
36697dc0 | 340 | |
dedabea4 | 341 | b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime; |
06642d17 LP |
342 | |
343 | r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); | |
36697dc0 LP |
344 | if (r < 0) |
345 | continue; | |
346 | ||
36697dc0 LP |
347 | if (!found_realtime) |
348 | t->next_elapse_realtime = v->next_elapse; | |
10717a1a | 349 | else |
36697dc0 | 350 | t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); |
871d7de4 | 351 | |
36697dc0 | 352 | found_realtime = true; |
871d7de4 | 353 | |
36697dc0 LP |
354 | } else { |
355 | switch (v->base) { | |
871d7de4 | 356 | |
36697dc0 LP |
357 | case TIMER_ACTIVE: |
358 | if (state_translation_table[t->state] == UNIT_ACTIVE) | |
359 | base = UNIT(t)->inactive_exit_timestamp.monotonic; | |
360 | else | |
dedabea4 | 361 | base = ts_monotonic; |
36697dc0 | 362 | break; |
871d7de4 | 363 | |
36697dc0 LP |
364 | case TIMER_BOOT: |
365 | /* CLOCK_MONOTONIC equals the uptime on Linux */ | |
366 | base = 0; | |
367 | break; | |
871d7de4 | 368 | |
36697dc0 LP |
369 | case TIMER_STARTUP: |
370 | base = UNIT(t)->manager->userspace_timestamp.monotonic; | |
371 | break; | |
871d7de4 | 372 | |
36697dc0 | 373 | case TIMER_UNIT_ACTIVE: |
871d7de4 | 374 | |
e41e1943 LP |
375 | base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic; |
376 | ||
377 | if (base <= 0) | |
06642d17 | 378 | base = t->last_trigger.monotonic; |
e41e1943 LP |
379 | |
380 | if (base <= 0) | |
36697dc0 | 381 | continue; |
871d7de4 | 382 | |
36697dc0 | 383 | break; |
871d7de4 | 384 | |
36697dc0 | 385 | case TIMER_UNIT_INACTIVE: |
871d7de4 | 386 | |
e41e1943 LP |
387 | base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic; |
388 | ||
389 | if (base <= 0) | |
06642d17 | 390 | base = t->last_trigger.monotonic; |
e41e1943 LP |
391 | |
392 | if (base <= 0) | |
36697dc0 | 393 | continue; |
871d7de4 | 394 | |
36697dc0 | 395 | break; |
871d7de4 | 396 | |
36697dc0 LP |
397 | default: |
398 | assert_not_reached("Unknown timer base"); | |
399 | } | |
871d7de4 | 400 | |
dedabea4 LP |
401 | if (t->wake_system) |
402 | base = monotonic_to_boottime(base); | |
403 | ||
36697dc0 LP |
404 | v->next_elapse = base + v->value; |
405 | ||
dedabea4 | 406 | if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { |
e41e1943 | 407 | /* This is a one time trigger, disable it now */ |
36697dc0 LP |
408 | v->disabled = true; |
409 | continue; | |
410 | } | |
411 | ||
412 | if (!found_monotonic) | |
dedabea4 | 413 | t->next_elapse_monotonic_or_boottime = v->next_elapse; |
36697dc0 | 414 | else |
dedabea4 | 415 | t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse); |
36697dc0 LP |
416 | |
417 | found_monotonic = true; | |
418 | } | |
871d7de4 LP |
419 | } |
420 | ||
36697dc0 | 421 | if (!found_monotonic && !found_realtime) { |
66870f90 | 422 | log_debug_unit(UNIT(t)->id, "%s: Timer is elapsed.", UNIT(t)->id); |
871d7de4 LP |
423 | timer_set_state(t, TIMER_ELAPSED); |
424 | return; | |
425 | } | |
426 | ||
36697dc0 LP |
427 | if (found_monotonic) { |
428 | char buf[FORMAT_TIMESPAN_MAX]; | |
dedabea4 LP |
429 | |
430 | log_debug_unit(UNIT(t)->id, "%s: Monotonic timer elapses in %s.", | |
431 | UNIT(t)->id, | |
432 | format_timespan(buf, sizeof(buf), t->next_elapse_monotonic_or_boottime > ts_monotonic ? t->next_elapse_monotonic_or_boottime - ts_monotonic : 0, 0)); | |
871d7de4 | 433 | |
718db961 | 434 | if (t->monotonic_event_source) { |
dedabea4 | 435 | r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime); |
718db961 LP |
436 | if (r < 0) |
437 | goto fail; | |
438 | ||
439 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT); | |
440 | } else | |
6a0f1f6d LP |
441 | r = sd_event_add_time( |
442 | UNIT(t)->manager->event, | |
443 | &t->monotonic_event_source, | |
dedabea4 LP |
444 | t->wake_system ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC, |
445 | t->next_elapse_monotonic_or_boottime, t->accuracy_usec, | |
6a0f1f6d | 446 | timer_dispatch, t); |
36697dc0 LP |
447 | if (r < 0) |
448 | goto fail; | |
718db961 LP |
449 | |
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]; | |
06642d17 | 459 | 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 | 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); | |
467 | } else | |
6a0f1f6d LP |
468 | r = sd_event_add_time( |
469 | UNIT(t)->manager->event, | |
470 | &t->realtime_event_source, | |
dedabea4 | 471 | t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME, |
6a0f1f6d LP |
472 | t->next_elapse_realtime, t->accuracy_usec, |
473 | timer_dispatch, t); | |
36697dc0 LP |
474 | if (r < 0) |
475 | goto fail; | |
718db961 LP |
476 | |
477 | } else if (t->realtime_event_source) { | |
718db961 | 478 | |
06642d17 | 479 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); |
718db961 LP |
480 | if (r < 0) |
481 | goto fail; | |
482 | } | |
871d7de4 LP |
483 | |
484 | timer_set_state(t, TIMER_WAITING); | |
485 | return; | |
486 | ||
487 | fail: | |
06642d17 | 488 | log_warning_unit(UNIT(t)->id, "%s failed to enter waiting state: %s", UNIT(t)->id, strerror(-r)); |
067d72c9 | 489 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
490 | } |
491 | ||
492 | static void timer_enter_running(Timer *t) { | |
718db961 | 493 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
871d7de4 | 494 | int r; |
398ef8ba | 495 | |
871d7de4 LP |
496 | assert(t); |
497 | ||
ba3e67a7 | 498 | /* Don't start job if we are supposed to go down */ |
31afa0a4 | 499 | if (unit_stop_pending(UNIT(t))) |
ba3e67a7 LP |
500 | return; |
501 | ||
3ecaa09b LP |
502 | r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)), |
503 | JOB_REPLACE, true, &error, NULL); | |
36697dc0 | 504 | if (r < 0) |
871d7de4 LP |
505 | goto fail; |
506 | ||
06642d17 LP |
507 | dual_timestamp_get(&t->last_trigger); |
508 | ||
472fc28f | 509 | if (t->stamp_path) |
359efc59 | 510 | touch_file(t->stamp_path, true, t->last_trigger.realtime, (uid_t) -1, (gid_t) -1, 0); |
e41e1943 | 511 | |
871d7de4 LP |
512 | timer_set_state(t, TIMER_RUNNING); |
513 | return; | |
514 | ||
515 | fail: | |
66870f90 ZJS |
516 | log_warning_unit(UNIT(t)->id, |
517 | "%s failed to queue unit startup job: %s", | |
718db961 | 518 | UNIT(t)->id, 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); | |
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 | ||
533 | if (t->stamp_path) { | |
534 | struct stat st; | |
535 | ||
536 | if (stat(t->stamp_path, &st) >= 0) | |
537 | t->last_trigger.realtime = timespec_load(&st.st_atim); | |
472fc28f TB |
538 | else if (errno == ENOENT) |
539 | /* The timer has never run before, | |
540 | * make sure a stamp file exists. | |
541 | */ | |
359efc59 | 542 | touch_file(t->stamp_path, true, (usec_t) -1, (uid_t) -1, (gid_t) -1, 0); |
06642d17 LP |
543 | } |
544 | ||
067d72c9 | 545 | t->result = TIMER_SUCCESS; |
871d7de4 LP |
546 | timer_enter_waiting(t, true); |
547 | return 0; | |
548 | } | |
549 | ||
550 | static int timer_stop(Unit *u) { | |
551 | Timer *t = TIMER(u); | |
552 | ||
553 | assert(t); | |
554 | assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); | |
555 | ||
067d72c9 | 556 | timer_enter_dead(t, TIMER_SUCCESS); |
871d7de4 LP |
557 | return 0; |
558 | } | |
559 | ||
560 | static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { | |
561 | Timer *t = TIMER(u); | |
562 | ||
563 | assert(u); | |
564 | assert(f); | |
565 | assert(fds); | |
566 | ||
567 | unit_serialize_item(u, f, "state", timer_state_to_string(t->state)); | |
067d72c9 | 568 | unit_serialize_item(u, f, "result", timer_result_to_string(t->result)); |
871d7de4 | 569 | |
06642d17 LP |
570 | if (t->last_trigger.realtime > 0) |
571 | unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime); | |
572 | ||
573 | if (t->last_trigger.monotonic > 0) | |
574 | unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic); | |
575 | ||
871d7de4 LP |
576 | return 0; |
577 | } | |
578 | ||
579 | static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
580 | Timer *t = TIMER(u); | |
06642d17 | 581 | int r; |
871d7de4 LP |
582 | |
583 | assert(u); | |
584 | assert(key); | |
585 | assert(value); | |
586 | assert(fds); | |
587 | ||
588 | if (streq(key, "state")) { | |
589 | TimerState state; | |
590 | ||
36697dc0 LP |
591 | state = timer_state_from_string(value); |
592 | if (state < 0) | |
66870f90 | 593 | log_debug_unit(u->id, "Failed to parse state value %s", value); |
871d7de4 LP |
594 | else |
595 | t->deserialized_state = state; | |
067d72c9 LP |
596 | } else if (streq(key, "result")) { |
597 | TimerResult f; | |
598 | ||
599 | f = timer_result_from_string(value); | |
600 | if (f < 0) | |
66870f90 | 601 | log_debug_unit(u->id, "Failed to parse result value %s", value); |
067d72c9 LP |
602 | else if (f != TIMER_SUCCESS) |
603 | t->result = f; | |
06642d17 LP |
604 | } else if (streq(key, "last-trigger-realtime")) { |
605 | ||
606 | r = safe_atou64(value, &t->last_trigger.realtime); | |
607 | if (r < 0) | |
608 | log_debug_unit(u->id, "Failed to parse last-trigger-realtime value %s", value); | |
609 | ||
610 | } else if (streq(key, "last-trigger-monotonic")) { | |
611 | ||
612 | r = safe_atou64(value, &t->last_trigger.monotonic); | |
613 | if (r < 0) | |
614 | log_debug_unit(u->id, "Failed to parse last-trigger-monotonic value %s", value); | |
067d72c9 | 615 | |
871d7de4 | 616 | } else |
66870f90 | 617 | log_debug_unit(u->id, "Unknown serialization key '%s'", key); |
871d7de4 LP |
618 | |
619 | return 0; | |
034c6ed7 LP |
620 | } |
621 | ||
44a6b1b6 | 622 | _pure_ static UnitActiveState timer_active_state(Unit *u) { |
871d7de4 LP |
623 | assert(u); |
624 | ||
625 | return state_translation_table[TIMER(u)->state]; | |
626 | } | |
627 | ||
44a6b1b6 | 628 | _pure_ static const char *timer_sub_state_to_string(Unit *u) { |
871d7de4 LP |
629 | assert(u); |
630 | ||
631 | return timer_state_to_string(TIMER(u)->state); | |
632 | } | |
633 | ||
718db961 LP |
634 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) { |
635 | Timer *t = TIMER(userdata); | |
871d7de4 LP |
636 | |
637 | assert(t); | |
5cb5a6ff | 638 | |
871d7de4 | 639 | if (t->state != TIMER_WAITING) |
718db961 | 640 | return 0; |
5cb5a6ff | 641 | |
718db961 | 642 | log_debug_unit(UNIT(t)->id, "Timer elapsed on %s", UNIT(t)->id); |
871d7de4 | 643 | timer_enter_running(t); |
718db961 | 644 | return 0; |
5cb5a6ff LP |
645 | } |
646 | ||
3ecaa09b LP |
647 | static void timer_trigger_notify(Unit *u, Unit *other) { |
648 | Timer *t = TIMER(u); | |
649 | TimerValue *v; | |
871d7de4 | 650 | |
3ecaa09b LP |
651 | assert(u); |
652 | assert(other); | |
871d7de4 | 653 | |
3ecaa09b LP |
654 | if (other->load_state != UNIT_LOADED) |
655 | return; | |
871d7de4 | 656 | |
3ecaa09b LP |
657 | /* Reenable all timers that depend on unit state */ |
658 | LIST_FOREACH(value, v, t->values) | |
659 | if (v->base == TIMER_UNIT_ACTIVE || | |
660 | v->base == TIMER_UNIT_INACTIVE) | |
661 | v->disabled = false; | |
01f78473 | 662 | |
3ecaa09b | 663 | switch (t->state) { |
871d7de4 | 664 | |
3ecaa09b LP |
665 | case TIMER_WAITING: |
666 | case TIMER_ELAPSED: | |
871d7de4 | 667 | |
3ecaa09b LP |
668 | /* Recalculate sleep time */ |
669 | timer_enter_waiting(t, false); | |
670 | break; | |
871d7de4 | 671 | |
3ecaa09b | 672 | case TIMER_RUNNING: |
871d7de4 | 673 | |
3ecaa09b | 674 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) { |
06642d17 | 675 | log_debug_unit(UNIT(t)->id, "%s got notified about unit deactivation.", UNIT(t)->id); |
871d7de4 | 676 | timer_enter_waiting(t, false); |
3ecaa09b LP |
677 | } |
678 | break; | |
871d7de4 | 679 | |
3ecaa09b LP |
680 | case TIMER_DEAD: |
681 | case TIMER_FAILED: | |
682 | break; | |
871d7de4 | 683 | |
3ecaa09b LP |
684 | default: |
685 | assert_not_reached("Unknown timer state"); | |
871d7de4 | 686 | } |
871d7de4 LP |
687 | } |
688 | ||
fdf20a31 | 689 | static void timer_reset_failed(Unit *u) { |
5632e374 LP |
690 | Timer *t = TIMER(u); |
691 | ||
692 | assert(t); | |
693 | ||
fdf20a31 | 694 | if (t->state == TIMER_FAILED) |
5632e374 LP |
695 | timer_set_state(t, TIMER_DEAD); |
696 | ||
067d72c9 | 697 | t->result = TIMER_SUCCESS; |
5632e374 LP |
698 | } |
699 | ||
8742514c LP |
700 | static void timer_time_change(Unit *u) { |
701 | Timer *t = TIMER(u); | |
702 | ||
703 | assert(u); | |
704 | ||
705 | if (t->state != TIMER_WAITING) | |
706 | return; | |
707 | ||
06642d17 | 708 | log_debug_unit(u->id, "%s: time change, recalculating next elapse.", u->id); |
8742514c LP |
709 | timer_enter_waiting(t, false); |
710 | } | |
711 | ||
871d7de4 LP |
712 | static const char* const timer_state_table[_TIMER_STATE_MAX] = { |
713 | [TIMER_DEAD] = "dead", | |
714 | [TIMER_WAITING] = "waiting", | |
715 | [TIMER_RUNNING] = "running", | |
716 | [TIMER_ELAPSED] = "elapsed", | |
fdf20a31 | 717 | [TIMER_FAILED] = "failed" |
871d7de4 LP |
718 | }; |
719 | ||
720 | DEFINE_STRING_TABLE_LOOKUP(timer_state, TimerState); | |
721 | ||
722 | static const char* const timer_base_table[_TIMER_BASE_MAX] = { | |
03fae018 LP |
723 | [TIMER_ACTIVE] = "OnActiveSec", |
724 | [TIMER_BOOT] = "OnBootSec", | |
725 | [TIMER_STARTUP] = "OnStartupSec", | |
726 | [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", | |
36697dc0 LP |
727 | [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", |
728 | [TIMER_CALENDAR] = "OnCalendar" | |
871d7de4 LP |
729 | }; |
730 | ||
731 | DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); | |
732 | ||
067d72c9 LP |
733 | static const char* const timer_result_table[_TIMER_RESULT_MAX] = { |
734 | [TIMER_SUCCESS] = "success", | |
735 | [TIMER_FAILURE_RESOURCES] = "resources" | |
736 | }; | |
737 | ||
738 | DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); | |
739 | ||
87f0e418 | 740 | const UnitVTable timer_vtable = { |
7d17cfbc | 741 | .object_size = sizeof(Timer), |
718db961 | 742 | |
f975e971 LP |
743 | .sections = |
744 | "Unit\0" | |
745 | "Timer\0" | |
746 | "Install\0", | |
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 | |
c4e2ceae | 770 | .bus_interface = "org.freedesktop.systemd1.Timer", |
718db961 | 771 | .bus_vtable = bus_timer_vtable, |
5cb5a6ff | 772 | }; |