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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; | |
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 | ||
06642d17 LP |
114 | static int timer_setup_persistent(Timer *t) { |
115 | int r; | |
116 | ||
117 | assert(t); | |
118 | ||
119 | if (!t->persistent) | |
120 | return 0; | |
121 | ||
122 | if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) { | |
123 | ||
124 | r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers"); | |
125 | if (r < 0) | |
126 | return r; | |
127 | ||
128 | t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id); | |
129 | } else { | |
130 | const char *e; | |
131 | ||
132 | e = getenv("XDG_DATA_HOME"); | |
133 | if (e) | |
bd34b310 | 134 | t->stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id, NULL); |
06642d17 LP |
135 | else { |
136 | ||
137 | _cleanup_free_ char *h = NULL; | |
138 | ||
139 | r = get_home_dir(&h); | |
140 | if (r < 0) { | |
141 | log_error("Failed to determine home directory: %s", strerror(-r)); | |
142 | return r; | |
143 | } | |
144 | ||
145 | t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL); | |
146 | } | |
147 | } | |
148 | ||
149 | if (!t->stamp_path) | |
150 | return log_oom(); | |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
871d7de4 LP |
155 | static int timer_load(Unit *u) { |
156 | Timer *t = TIMER(u); | |
157 | int r; | |
158 | ||
159 | assert(u); | |
ac155bb8 | 160 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 161 | |
36697dc0 LP |
162 | r = unit_load_fragment_and_dropin(u); |
163 | if (r < 0) | |
871d7de4 LP |
164 | return r; |
165 | ||
ac155bb8 | 166 | if (u->load_state == UNIT_LOADED) { |
871d7de4 | 167 | |
3ecaa09b | 168 | if (set_isempty(u->dependencies[UNIT_TRIGGERS])) { |
57020a3a LP |
169 | Unit *x; |
170 | ||
171 | r = unit_load_related_unit(u, ".service", &x); | |
172 | if (r < 0) | |
871d7de4 LP |
173 | return r; |
174 | ||
3ecaa09b LP |
175 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
176 | if (r < 0) | |
177 | return r; | |
57020a3a LP |
178 | } |
179 | ||
06642d17 LP |
180 | r = timer_setup_persistent(t); |
181 | if (r < 0) | |
182 | return r; | |
183 | ||
184 | if (u->default_dependencies) { | |
36697dc0 LP |
185 | r = timer_add_default_dependencies(t); |
186 | if (r < 0) | |
a40eb732 | 187 | return r; |
36697dc0 | 188 | } |
871d7de4 LP |
189 | } |
190 | ||
191 | return timer_verify(t); | |
192 | } | |
193 | ||
194 | static void timer_dump(Unit *u, FILE *f, const char *prefix) { | |
9f5eb56a | 195 | char buf[FORMAT_TIMESPAN_MAX]; |
871d7de4 | 196 | Timer *t = TIMER(u); |
3ecaa09b | 197 | Unit *trigger; |
871d7de4 | 198 | TimerValue *v; |
034c6ed7 | 199 | |
3ecaa09b LP |
200 | trigger = UNIT_TRIGGER(u); |
201 | ||
871d7de4 LP |
202 | fprintf(f, |
203 | "%sTimer State: %s\n" | |
067d72c9 | 204 | "%sResult: %s\n" |
9f5eb56a | 205 | "%sUnit: %s\n" |
dedabea4 LP |
206 | "%sPersistent: %s\n" |
207 | "%sWakeSystem: %s\n" | |
9f5eb56a | 208 | "%sAccuracy: %s\n", |
871d7de4 | 209 | prefix, timer_state_to_string(t->state), |
067d72c9 | 210 | prefix, timer_result_to_string(t->result), |
9f5eb56a | 211 | prefix, trigger ? trigger->id : "n/a", |
dedabea4 LP |
212 | prefix, yes_no(t->persistent), |
213 | prefix, yes_no(t->wake_system), | |
9f5eb56a | 214 | prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1)); |
871d7de4 | 215 | |
36697dc0 LP |
216 | LIST_FOREACH(value, v, t->values) { |
217 | ||
218 | if (v->base == TIMER_CALENDAR) { | |
219 | _cleanup_free_ char *p = NULL; | |
220 | ||
221 | calendar_spec_to_string(v->calendar_spec, &p); | |
222 | ||
223 | fprintf(f, | |
224 | "%s%s: %s\n", | |
225 | prefix, | |
226 | timer_base_to_string(v->base), | |
227 | strna(p)); | |
228 | } else { | |
229 | char timespan1[FORMAT_TIMESPAN_MAX]; | |
230 | ||
231 | fprintf(f, | |
232 | "%s%s: %s\n", | |
233 | prefix, | |
234 | timer_base_to_string(v->base), | |
2fa4092c | 235 | strna(format_timespan(timespan1, sizeof(timespan1), v->value, 0))); |
36697dc0 LP |
236 | } |
237 | } | |
871d7de4 LP |
238 | } |
239 | ||
240 | static void timer_set_state(Timer *t, TimerState state) { | |
241 | TimerState old_state; | |
034c6ed7 | 242 | assert(t); |
871d7de4 LP |
243 | |
244 | old_state = t->state; | |
245 | t->state = state; | |
246 | ||
36697dc0 | 247 | if (state != TIMER_WAITING) { |
718db961 LP |
248 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
249 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
36697dc0 | 250 | } |
871d7de4 LP |
251 | |
252 | if (state != old_state) | |
66870f90 ZJS |
253 | log_debug_unit(UNIT(t)->id, |
254 | "%s changed %s -> %s", UNIT(t)->id, | |
255 | timer_state_to_string(old_state), | |
256 | timer_state_to_string(state)); | |
871d7de4 | 257 | |
e2f3b44c | 258 | unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); |
871d7de4 LP |
259 | } |
260 | ||
261 | static void timer_enter_waiting(Timer *t, bool initial); | |
262 | ||
263 | static int timer_coldplug(Unit *u) { | |
264 | Timer *t = TIMER(u); | |
265 | ||
266 | assert(t); | |
267 | assert(t->state == TIMER_DEAD); | |
268 | ||
269 | if (t->deserialized_state != t->state) { | |
270 | ||
b363ca6f | 271 | if (t->deserialized_state == TIMER_WAITING) |
871d7de4 LP |
272 | timer_enter_waiting(t, false); |
273 | else | |
274 | timer_set_state(t, t->deserialized_state); | |
275 | } | |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
067d72c9 | 280 | static void timer_enter_dead(Timer *t, TimerResult f) { |
871d7de4 LP |
281 | assert(t); |
282 | ||
067d72c9 LP |
283 | if (f != TIMER_SUCCESS) |
284 | t->result = f; | |
871d7de4 | 285 | |
067d72c9 | 286 | timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); |
871d7de4 LP |
287 | } |
288 | ||
dedabea4 LP |
289 | static usec_t monotonic_to_boottime(usec_t t) { |
290 | usec_t a, b; | |
291 | ||
292 | if (t <= 0) | |
293 | return 0; | |
294 | ||
295 | a = now(CLOCK_BOOTTIME); | |
296 | b = now(CLOCK_MONOTONIC); | |
297 | ||
298 | if (t + a > b) | |
299 | return t + a - b; | |
300 | else | |
301 | return 0; | |
302 | } | |
303 | ||
871d7de4 | 304 | static void timer_enter_waiting(Timer *t, bool initial) { |
36697dc0 | 305 | bool found_monotonic = false, found_realtime = false; |
dedabea4 LP |
306 | usec_t ts_realtime, ts_monotonic; |
307 | usec_t base = 0; | |
308 | TimerValue *v; | |
871d7de4 LP |
309 | int r; |
310 | ||
dedabea4 LP |
311 | /* If we shall wake the system we use the boottime clock |
312 | * rather than the monotonic clock. */ | |
313 | ||
314 | ts_realtime = now(CLOCK_REALTIME); | |
315 | ts_monotonic = now(t->wake_system ? CLOCK_BOOTTIME : CLOCK_MONOTONIC); | |
316 | t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0; | |
871d7de4 LP |
317 | |
318 | LIST_FOREACH(value, v, t->values) { | |
319 | ||
320 | if (v->disabled) | |
321 | continue; | |
322 | ||
36697dc0 | 323 | if (v->base == TIMER_CALENDAR) { |
06642d17 LP |
324 | usec_t b; |
325 | ||
326 | /* If we know the last time this was | |
327 | * triggered, schedule the job based relative | |
328 | * to that. If we don't just start from | |
329 | * now. */ | |
36697dc0 | 330 | |
dedabea4 | 331 | b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime; |
06642d17 LP |
332 | |
333 | r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); | |
36697dc0 LP |
334 | if (r < 0) |
335 | continue; | |
336 | ||
36697dc0 LP |
337 | if (!found_realtime) |
338 | t->next_elapse_realtime = v->next_elapse; | |
10717a1a | 339 | else |
36697dc0 | 340 | t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); |
871d7de4 | 341 | |
36697dc0 | 342 | found_realtime = true; |
871d7de4 | 343 | |
36697dc0 LP |
344 | } else { |
345 | switch (v->base) { | |
871d7de4 | 346 | |
36697dc0 LP |
347 | case TIMER_ACTIVE: |
348 | if (state_translation_table[t->state] == UNIT_ACTIVE) | |
349 | base = UNIT(t)->inactive_exit_timestamp.monotonic; | |
350 | else | |
dedabea4 | 351 | base = ts_monotonic; |
36697dc0 | 352 | break; |
871d7de4 | 353 | |
36697dc0 LP |
354 | case TIMER_BOOT: |
355 | /* CLOCK_MONOTONIC equals the uptime on Linux */ | |
356 | base = 0; | |
357 | break; | |
871d7de4 | 358 | |
36697dc0 LP |
359 | case TIMER_STARTUP: |
360 | base = UNIT(t)->manager->userspace_timestamp.monotonic; | |
361 | break; | |
871d7de4 | 362 | |
36697dc0 | 363 | case TIMER_UNIT_ACTIVE: |
871d7de4 | 364 | |
e41e1943 LP |
365 | base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic; |
366 | ||
367 | if (base <= 0) | |
06642d17 | 368 | base = t->last_trigger.monotonic; |
e41e1943 LP |
369 | |
370 | if (base <= 0) | |
36697dc0 | 371 | continue; |
871d7de4 | 372 | |
36697dc0 | 373 | break; |
871d7de4 | 374 | |
36697dc0 | 375 | case TIMER_UNIT_INACTIVE: |
871d7de4 | 376 | |
e41e1943 LP |
377 | base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic; |
378 | ||
379 | if (base <= 0) | |
06642d17 | 380 | base = t->last_trigger.monotonic; |
e41e1943 LP |
381 | |
382 | if (base <= 0) | |
36697dc0 | 383 | continue; |
871d7de4 | 384 | |
36697dc0 | 385 | break; |
871d7de4 | 386 | |
36697dc0 LP |
387 | default: |
388 | assert_not_reached("Unknown timer base"); | |
389 | } | |
871d7de4 | 390 | |
dedabea4 LP |
391 | if (t->wake_system) |
392 | base = monotonic_to_boottime(base); | |
393 | ||
36697dc0 LP |
394 | v->next_elapse = base + v->value; |
395 | ||
dedabea4 | 396 | if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { |
e41e1943 | 397 | /* This is a one time trigger, disable it now */ |
36697dc0 LP |
398 | v->disabled = true; |
399 | continue; | |
400 | } | |
401 | ||
402 | if (!found_monotonic) | |
dedabea4 | 403 | t->next_elapse_monotonic_or_boottime = v->next_elapse; |
36697dc0 | 404 | else |
dedabea4 | 405 | t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse); |
36697dc0 LP |
406 | |
407 | found_monotonic = true; | |
408 | } | |
871d7de4 LP |
409 | } |
410 | ||
36697dc0 | 411 | if (!found_monotonic && !found_realtime) { |
66870f90 | 412 | log_debug_unit(UNIT(t)->id, "%s: Timer is elapsed.", UNIT(t)->id); |
871d7de4 LP |
413 | timer_set_state(t, TIMER_ELAPSED); |
414 | return; | |
415 | } | |
416 | ||
36697dc0 LP |
417 | if (found_monotonic) { |
418 | char buf[FORMAT_TIMESPAN_MAX]; | |
dedabea4 LP |
419 | |
420 | log_debug_unit(UNIT(t)->id, "%s: Monotonic timer elapses in %s.", | |
421 | UNIT(t)->id, | |
422 | 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); | |
430 | } else | |
6a0f1f6d LP |
431 | r = sd_event_add_time( |
432 | UNIT(t)->manager->event, | |
433 | &t->monotonic_event_source, | |
dedabea4 LP |
434 | t->wake_system ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC, |
435 | t->next_elapse_monotonic_or_boottime, t->accuracy_usec, | |
6a0f1f6d | 436 | timer_dispatch, t); |
36697dc0 LP |
437 | if (r < 0) |
438 | goto fail; | |
718db961 LP |
439 | |
440 | } else if (t->monotonic_event_source) { | |
718db961 | 441 | |
06642d17 | 442 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_OFF); |
718db961 LP |
443 | if (r < 0) |
444 | goto fail; | |
445 | } | |
36697dc0 LP |
446 | |
447 | if (found_realtime) { | |
448 | char buf[FORMAT_TIMESTAMP_MAX]; | |
06642d17 | 449 | 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 | 450 | |
718db961 LP |
451 | if (t->realtime_event_source) { |
452 | r = sd_event_source_set_time(t->realtime_event_source, t->next_elapse_realtime); | |
453 | if (r < 0) | |
454 | goto fail; | |
455 | ||
456 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_ONESHOT); | |
457 | } else | |
6a0f1f6d LP |
458 | r = sd_event_add_time( |
459 | UNIT(t)->manager->event, | |
460 | &t->realtime_event_source, | |
dedabea4 | 461 | t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME, |
6a0f1f6d LP |
462 | t->next_elapse_realtime, t->accuracy_usec, |
463 | timer_dispatch, t); | |
36697dc0 LP |
464 | if (r < 0) |
465 | goto fail; | |
718db961 LP |
466 | |
467 | } else if (t->realtime_event_source) { | |
718db961 | 468 | |
06642d17 | 469 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); |
718db961 LP |
470 | if (r < 0) |
471 | goto fail; | |
472 | } | |
871d7de4 LP |
473 | |
474 | timer_set_state(t, TIMER_WAITING); | |
475 | return; | |
476 | ||
477 | fail: | |
06642d17 | 478 | log_warning_unit(UNIT(t)->id, "%s failed to enter waiting state: %s", UNIT(t)->id, strerror(-r)); |
067d72c9 | 479 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
480 | } |
481 | ||
482 | static void timer_enter_running(Timer *t) { | |
718db961 | 483 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
871d7de4 | 484 | int r; |
398ef8ba | 485 | |
871d7de4 LP |
486 | assert(t); |
487 | ||
ba3e67a7 | 488 | /* Don't start job if we are supposed to go down */ |
31afa0a4 | 489 | if (unit_stop_pending(UNIT(t))) |
ba3e67a7 LP |
490 | return; |
491 | ||
3ecaa09b LP |
492 | r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)), |
493 | JOB_REPLACE, true, &error, NULL); | |
36697dc0 | 494 | if (r < 0) |
871d7de4 LP |
495 | goto fail; |
496 | ||
06642d17 LP |
497 | dual_timestamp_get(&t->last_trigger); |
498 | ||
472fc28f | 499 | if (t->stamp_path) |
359efc59 | 500 | touch_file(t->stamp_path, true, t->last_trigger.realtime, (uid_t) -1, (gid_t) -1, 0); |
e41e1943 | 501 | |
871d7de4 LP |
502 | timer_set_state(t, TIMER_RUNNING); |
503 | return; | |
504 | ||
505 | fail: | |
66870f90 ZJS |
506 | log_warning_unit(UNIT(t)->id, |
507 | "%s failed to queue unit startup job: %s", | |
718db961 | 508 | UNIT(t)->id, bus_error_message(&error, r)); |
067d72c9 | 509 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
510 | } |
511 | ||
512 | static int timer_start(Unit *u) { | |
513 | Timer *t = TIMER(u); | |
514 | ||
515 | assert(t); | |
fdf20a31 | 516 | assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED); |
01f78473 | 517 | |
3ecaa09b | 518 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 519 | return -ENOENT; |
871d7de4 | 520 | |
06642d17 LP |
521 | t->last_trigger = DUAL_TIMESTAMP_NULL; |
522 | ||
523 | if (t->stamp_path) { | |
524 | struct stat st; | |
525 | ||
526 | if (stat(t->stamp_path, &st) >= 0) | |
527 | t->last_trigger.realtime = timespec_load(&st.st_atim); | |
472fc28f TB |
528 | else if (errno == ENOENT) |
529 | /* The timer has never run before, | |
530 | * make sure a stamp file exists. | |
531 | */ | |
359efc59 | 532 | touch_file(t->stamp_path, true, (usec_t) -1, (uid_t) -1, (gid_t) -1, 0); |
06642d17 LP |
533 | } |
534 | ||
067d72c9 | 535 | t->result = TIMER_SUCCESS; |
871d7de4 LP |
536 | timer_enter_waiting(t, true); |
537 | return 0; | |
538 | } | |
539 | ||
540 | static int timer_stop(Unit *u) { | |
541 | Timer *t = TIMER(u); | |
542 | ||
543 | assert(t); | |
544 | assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); | |
545 | ||
067d72c9 | 546 | timer_enter_dead(t, TIMER_SUCCESS); |
871d7de4 LP |
547 | return 0; |
548 | } | |
549 | ||
550 | static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { | |
551 | Timer *t = TIMER(u); | |
552 | ||
553 | assert(u); | |
554 | assert(f); | |
555 | assert(fds); | |
556 | ||
557 | unit_serialize_item(u, f, "state", timer_state_to_string(t->state)); | |
067d72c9 | 558 | unit_serialize_item(u, f, "result", timer_result_to_string(t->result)); |
871d7de4 | 559 | |
06642d17 LP |
560 | if (t->last_trigger.realtime > 0) |
561 | unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime); | |
562 | ||
563 | if (t->last_trigger.monotonic > 0) | |
564 | unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic); | |
565 | ||
871d7de4 LP |
566 | return 0; |
567 | } | |
568 | ||
569 | static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
570 | Timer *t = TIMER(u); | |
06642d17 | 571 | int r; |
871d7de4 LP |
572 | |
573 | assert(u); | |
574 | assert(key); | |
575 | assert(value); | |
576 | assert(fds); | |
577 | ||
578 | if (streq(key, "state")) { | |
579 | TimerState state; | |
580 | ||
36697dc0 LP |
581 | state = timer_state_from_string(value); |
582 | if (state < 0) | |
66870f90 | 583 | log_debug_unit(u->id, "Failed to parse state value %s", value); |
871d7de4 LP |
584 | else |
585 | t->deserialized_state = state; | |
067d72c9 LP |
586 | } else if (streq(key, "result")) { |
587 | TimerResult f; | |
588 | ||
589 | f = timer_result_from_string(value); | |
590 | if (f < 0) | |
66870f90 | 591 | log_debug_unit(u->id, "Failed to parse result value %s", value); |
067d72c9 LP |
592 | else if (f != TIMER_SUCCESS) |
593 | t->result = f; | |
06642d17 LP |
594 | } else if (streq(key, "last-trigger-realtime")) { |
595 | ||
596 | r = safe_atou64(value, &t->last_trigger.realtime); | |
597 | if (r < 0) | |
598 | log_debug_unit(u->id, "Failed to parse last-trigger-realtime value %s", value); | |
599 | ||
600 | } else if (streq(key, "last-trigger-monotonic")) { | |
601 | ||
602 | r = safe_atou64(value, &t->last_trigger.monotonic); | |
603 | if (r < 0) | |
604 | log_debug_unit(u->id, "Failed to parse last-trigger-monotonic value %s", value); | |
067d72c9 | 605 | |
871d7de4 | 606 | } else |
66870f90 | 607 | log_debug_unit(u->id, "Unknown serialization key '%s'", key); |
871d7de4 LP |
608 | |
609 | return 0; | |
034c6ed7 LP |
610 | } |
611 | ||
44a6b1b6 | 612 | _pure_ static UnitActiveState timer_active_state(Unit *u) { |
871d7de4 LP |
613 | assert(u); |
614 | ||
615 | return state_translation_table[TIMER(u)->state]; | |
616 | } | |
617 | ||
44a6b1b6 | 618 | _pure_ static const char *timer_sub_state_to_string(Unit *u) { |
871d7de4 LP |
619 | assert(u); |
620 | ||
621 | return timer_state_to_string(TIMER(u)->state); | |
622 | } | |
623 | ||
718db961 LP |
624 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) { |
625 | Timer *t = TIMER(userdata); | |
871d7de4 LP |
626 | |
627 | assert(t); | |
5cb5a6ff | 628 | |
871d7de4 | 629 | if (t->state != TIMER_WAITING) |
718db961 | 630 | return 0; |
5cb5a6ff | 631 | |
718db961 | 632 | log_debug_unit(UNIT(t)->id, "Timer elapsed on %s", UNIT(t)->id); |
871d7de4 | 633 | timer_enter_running(t); |
718db961 | 634 | return 0; |
5cb5a6ff LP |
635 | } |
636 | ||
3ecaa09b LP |
637 | static void timer_trigger_notify(Unit *u, Unit *other) { |
638 | Timer *t = TIMER(u); | |
639 | TimerValue *v; | |
871d7de4 | 640 | |
3ecaa09b LP |
641 | assert(u); |
642 | assert(other); | |
871d7de4 | 643 | |
3ecaa09b LP |
644 | if (other->load_state != UNIT_LOADED) |
645 | return; | |
871d7de4 | 646 | |
3ecaa09b LP |
647 | /* Reenable all timers that depend on unit state */ |
648 | LIST_FOREACH(value, v, t->values) | |
649 | if (v->base == TIMER_UNIT_ACTIVE || | |
650 | v->base == TIMER_UNIT_INACTIVE) | |
651 | v->disabled = false; | |
01f78473 | 652 | |
3ecaa09b | 653 | switch (t->state) { |
871d7de4 | 654 | |
3ecaa09b LP |
655 | case TIMER_WAITING: |
656 | case TIMER_ELAPSED: | |
871d7de4 | 657 | |
3ecaa09b LP |
658 | /* Recalculate sleep time */ |
659 | timer_enter_waiting(t, false); | |
660 | break; | |
871d7de4 | 661 | |
3ecaa09b | 662 | case TIMER_RUNNING: |
871d7de4 | 663 | |
3ecaa09b | 664 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) { |
06642d17 | 665 | log_debug_unit(UNIT(t)->id, "%s got notified about unit deactivation.", UNIT(t)->id); |
871d7de4 | 666 | timer_enter_waiting(t, false); |
3ecaa09b LP |
667 | } |
668 | break; | |
871d7de4 | 669 | |
3ecaa09b LP |
670 | case TIMER_DEAD: |
671 | case TIMER_FAILED: | |
672 | break; | |
871d7de4 | 673 | |
3ecaa09b LP |
674 | default: |
675 | assert_not_reached("Unknown timer state"); | |
871d7de4 | 676 | } |
871d7de4 LP |
677 | } |
678 | ||
fdf20a31 | 679 | static void timer_reset_failed(Unit *u) { |
5632e374 LP |
680 | Timer *t = TIMER(u); |
681 | ||
682 | assert(t); | |
683 | ||
fdf20a31 | 684 | if (t->state == TIMER_FAILED) |
5632e374 LP |
685 | timer_set_state(t, TIMER_DEAD); |
686 | ||
067d72c9 | 687 | t->result = TIMER_SUCCESS; |
5632e374 LP |
688 | } |
689 | ||
8742514c LP |
690 | static void timer_time_change(Unit *u) { |
691 | Timer *t = TIMER(u); | |
692 | ||
693 | assert(u); | |
694 | ||
695 | if (t->state != TIMER_WAITING) | |
696 | return; | |
697 | ||
06642d17 | 698 | log_debug_unit(u->id, "%s: time change, recalculating next elapse.", u->id); |
8742514c LP |
699 | timer_enter_waiting(t, false); |
700 | } | |
701 | ||
871d7de4 LP |
702 | static const char* const timer_state_table[_TIMER_STATE_MAX] = { |
703 | [TIMER_DEAD] = "dead", | |
704 | [TIMER_WAITING] = "waiting", | |
705 | [TIMER_RUNNING] = "running", | |
706 | [TIMER_ELAPSED] = "elapsed", | |
fdf20a31 | 707 | [TIMER_FAILED] = "failed" |
871d7de4 LP |
708 | }; |
709 | ||
710 | DEFINE_STRING_TABLE_LOOKUP(timer_state, TimerState); | |
711 | ||
712 | static const char* const timer_base_table[_TIMER_BASE_MAX] = { | |
03fae018 LP |
713 | [TIMER_ACTIVE] = "OnActiveSec", |
714 | [TIMER_BOOT] = "OnBootSec", | |
715 | [TIMER_STARTUP] = "OnStartupSec", | |
716 | [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", | |
36697dc0 LP |
717 | [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", |
718 | [TIMER_CALENDAR] = "OnCalendar" | |
871d7de4 LP |
719 | }; |
720 | ||
721 | DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); | |
722 | ||
067d72c9 LP |
723 | static const char* const timer_result_table[_TIMER_RESULT_MAX] = { |
724 | [TIMER_SUCCESS] = "success", | |
725 | [TIMER_FAILURE_RESOURCES] = "resources" | |
726 | }; | |
727 | ||
728 | DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); | |
729 | ||
87f0e418 | 730 | const UnitVTable timer_vtable = { |
7d17cfbc | 731 | .object_size = sizeof(Timer), |
718db961 | 732 | |
f975e971 LP |
733 | .sections = |
734 | "Unit\0" | |
735 | "Timer\0" | |
736 | "Install\0", | |
5cb5a6ff | 737 | |
871d7de4 | 738 | .init = timer_init, |
034c6ed7 | 739 | .done = timer_done, |
871d7de4 LP |
740 | .load = timer_load, |
741 | ||
742 | .coldplug = timer_coldplug, | |
743 | ||
744 | .dump = timer_dump, | |
745 | ||
746 | .start = timer_start, | |
747 | .stop = timer_stop, | |
748 | ||
749 | .serialize = timer_serialize, | |
750 | .deserialize_item = timer_deserialize_item, | |
751 | ||
752 | .active_state = timer_active_state, | |
753 | .sub_state_to_string = timer_sub_state_to_string, | |
754 | ||
3ecaa09b LP |
755 | .trigger_notify = timer_trigger_notify, |
756 | ||
fdf20a31 | 757 | .reset_failed = timer_reset_failed, |
8742514c | 758 | .time_change = timer_time_change, |
5632e374 | 759 | |
c4e2ceae | 760 | .bus_interface = "org.freedesktop.systemd1.Timer", |
718db961 | 761 | .bus_vtable = bus_timer_vtable, |
5cb5a6ff | 762 | }; |