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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 | ||
b5efdb8a | 24 | #include "alloc-util.h" |
07630cea LP |
25 | #include "bus-error.h" |
26 | #include "bus-util.h" | |
871d7de4 | 27 | #include "dbus-timer.h" |
f4f15635 | 28 | #include "fs-util.h" |
6bedfcbb | 29 | #include "parse-util.h" |
a40eb732 | 30 | #include "special.h" |
8b43440b | 31 | #include "string-table.h" |
07630cea | 32 | #include "string-util.h" |
b1d4f8e1 | 33 | #include "timer.h" |
07630cea LP |
34 | #include "unit-name.h" |
35 | #include "unit.h" | |
b1d4f8e1 | 36 | #include "user-util.h" |
c1d9ba99 | 37 | #include "virt.h" |
871d7de4 LP |
38 | |
39 | static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = { | |
40 | [TIMER_DEAD] = UNIT_INACTIVE, | |
41 | [TIMER_WAITING] = UNIT_ACTIVE, | |
42 | [TIMER_RUNNING] = UNIT_ACTIVE, | |
43 | [TIMER_ELAPSED] = UNIT_ACTIVE, | |
fdf20a31 | 44 | [TIMER_FAILED] = UNIT_FAILED |
871d7de4 LP |
45 | }; |
46 | ||
718db961 LP |
47 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata); |
48 | ||
871d7de4 LP |
49 | static void timer_init(Unit *u) { |
50 | Timer *t = TIMER(u); | |
51 | ||
52 | assert(u); | |
ac155bb8 | 53 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 54 | |
3a43da28 KS |
55 | t->next_elapse_monotonic_or_boottime = USEC_INFINITY; |
56 | t->next_elapse_realtime = USEC_INFINITY; | |
bd8f585b | 57 | t->accuracy_usec = u->manager->default_timer_accuracy_usec; |
871d7de4 | 58 | } |
5cb5a6ff | 59 | |
74051b9b | 60 | void timer_free_values(Timer *t) { |
871d7de4 LP |
61 | TimerValue *v; |
62 | ||
63 | assert(t); | |
64 | ||
65 | while ((v = t->values)) { | |
71fda00f | 66 | LIST_REMOVE(value, t->values, v); |
3e044c49 | 67 | calendar_spec_free(v->calendar_spec); |
871d7de4 LP |
68 | free(v); |
69 | } | |
74051b9b LP |
70 | } |
71 | ||
72 | static void timer_done(Unit *u) { | |
73 | Timer *t = TIMER(u); | |
74 | ||
75 | assert(t); | |
76 | ||
77 | timer_free_values(t); | |
871d7de4 | 78 | |
718db961 LP |
79 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
80 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
06642d17 LP |
81 | |
82 | free(t->stamp_path); | |
871d7de4 LP |
83 | } |
84 | ||
85 | static int timer_verify(Timer *t) { | |
86 | assert(t); | |
87 | ||
1124fe6f | 88 | if (UNIT(t)->load_state != UNIT_LOADED) |
871d7de4 LP |
89 | return 0; |
90 | ||
91 | if (!t->values) { | |
f2341e0a | 92 | log_unit_error(UNIT(t), "Timer unit lacks value setting. Refusing."); |
871d7de4 LP |
93 | return -EINVAL; |
94 | } | |
95 | ||
96 | return 0; | |
97 | } | |
98 | ||
6c155fe3 LP |
99 | static int timer_add_default_dependencies(Timer *t) { |
100 | int r; | |
19f8d037 | 101 | TimerValue *v; |
6c155fe3 LP |
102 | |
103 | assert(t); | |
104 | ||
4c9ea260 LP |
105 | if (!UNIT(t)->default_dependencies) |
106 | return 0; | |
107 | ||
e3d84721 LP |
108 | r = unit_add_dependency_by_name(UNIT(t), UNIT_BEFORE, SPECIAL_TIMERS_TARGET, NULL, true); |
109 | if (r < 0) | |
110 | return r; | |
2a77d31d | 111 | |
b2c23da8 | 112 | if (UNIT(t)->manager->running_as == MANAGER_SYSTEM) { |
36697dc0 LP |
113 | r = unit_add_two_dependencies_by_name(UNIT(t), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true); |
114 | if (r < 0) | |
6c155fe3 | 115 | return r; |
19f8d037 TGR |
116 | |
117 | LIST_FOREACH(value, v, t->values) { | |
118 | if (v->base == TIMER_CALENDAR) { | |
119 | r = unit_add_dependency_by_name(UNIT(t), UNIT_AFTER, SPECIAL_TIME_SYNC_TARGET, NULL, true); | |
120 | if (r < 0) | |
121 | return r; | |
122 | break; | |
123 | } | |
124 | } | |
2a77d31d | 125 | } |
6c155fe3 | 126 | |
ead8e478 | 127 | return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
6c155fe3 LP |
128 | } |
129 | ||
06642d17 LP |
130 | static int timer_setup_persistent(Timer *t) { |
131 | int r; | |
132 | ||
133 | assert(t); | |
134 | ||
135 | if (!t->persistent) | |
136 | return 0; | |
137 | ||
b2c23da8 | 138 | if (UNIT(t)->manager->running_as == MANAGER_SYSTEM) { |
06642d17 LP |
139 | |
140 | r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers"); | |
141 | if (r < 0) | |
142 | return r; | |
143 | ||
144 | t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id); | |
145 | } else { | |
146 | const char *e; | |
147 | ||
148 | e = getenv("XDG_DATA_HOME"); | |
149 | if (e) | |
bd34b310 | 150 | t->stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id, NULL); |
06642d17 LP |
151 | else { |
152 | ||
153 | _cleanup_free_ char *h = NULL; | |
154 | ||
155 | r = get_home_dir(&h); | |
23bbb0de | 156 | if (r < 0) |
f2341e0a | 157 | return log_unit_error_errno(UNIT(t), r, "Failed to determine home directory: %m"); |
06642d17 LP |
158 | |
159 | t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL); | |
160 | } | |
161 | } | |
162 | ||
163 | if (!t->stamp_path) | |
164 | return log_oom(); | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
871d7de4 LP |
169 | static int timer_load(Unit *u) { |
170 | Timer *t = TIMER(u); | |
171 | int r; | |
172 | ||
173 | assert(u); | |
ac155bb8 | 174 | assert(u->load_state == UNIT_STUB); |
871d7de4 | 175 | |
36697dc0 LP |
176 | r = unit_load_fragment_and_dropin(u); |
177 | if (r < 0) | |
871d7de4 LP |
178 | return r; |
179 | ||
ac155bb8 | 180 | if (u->load_state == UNIT_LOADED) { |
871d7de4 | 181 | |
3ecaa09b | 182 | if (set_isempty(u->dependencies[UNIT_TRIGGERS])) { |
57020a3a LP |
183 | Unit *x; |
184 | ||
185 | r = unit_load_related_unit(u, ".service", &x); | |
186 | if (r < 0) | |
871d7de4 LP |
187 | return r; |
188 | ||
3ecaa09b LP |
189 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
190 | if (r < 0) | |
191 | return r; | |
57020a3a LP |
192 | } |
193 | ||
06642d17 LP |
194 | r = timer_setup_persistent(t); |
195 | if (r < 0) | |
196 | return r; | |
197 | ||
4c9ea260 LP |
198 | r = timer_add_default_dependencies(t); |
199 | if (r < 0) | |
200 | return r; | |
871d7de4 LP |
201 | } |
202 | ||
203 | return timer_verify(t); | |
204 | } | |
205 | ||
206 | static void timer_dump(Unit *u, FILE *f, const char *prefix) { | |
9f5eb56a | 207 | char buf[FORMAT_TIMESPAN_MAX]; |
871d7de4 | 208 | Timer *t = TIMER(u); |
3ecaa09b | 209 | Unit *trigger; |
871d7de4 | 210 | TimerValue *v; |
034c6ed7 | 211 | |
3ecaa09b LP |
212 | trigger = UNIT_TRIGGER(u); |
213 | ||
871d7de4 LP |
214 | fprintf(f, |
215 | "%sTimer State: %s\n" | |
067d72c9 | 216 | "%sResult: %s\n" |
9f5eb56a | 217 | "%sUnit: %s\n" |
dedabea4 LP |
218 | "%sPersistent: %s\n" |
219 | "%sWakeSystem: %s\n" | |
9f5eb56a | 220 | "%sAccuracy: %s\n", |
871d7de4 | 221 | prefix, timer_state_to_string(t->state), |
067d72c9 | 222 | prefix, timer_result_to_string(t->result), |
9f5eb56a | 223 | prefix, trigger ? trigger->id : "n/a", |
dedabea4 LP |
224 | prefix, yes_no(t->persistent), |
225 | prefix, yes_no(t->wake_system), | |
9f5eb56a | 226 | prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1)); |
871d7de4 | 227 | |
36697dc0 LP |
228 | LIST_FOREACH(value, v, t->values) { |
229 | ||
230 | if (v->base == TIMER_CALENDAR) { | |
231 | _cleanup_free_ char *p = NULL; | |
232 | ||
233 | calendar_spec_to_string(v->calendar_spec, &p); | |
234 | ||
235 | fprintf(f, | |
236 | "%s%s: %s\n", | |
237 | prefix, | |
238 | timer_base_to_string(v->base), | |
239 | strna(p)); | |
240 | } else { | |
241 | char timespan1[FORMAT_TIMESPAN_MAX]; | |
242 | ||
243 | fprintf(f, | |
244 | "%s%s: %s\n", | |
245 | prefix, | |
246 | timer_base_to_string(v->base), | |
b1d6dcf5 | 247 | format_timespan(timespan1, sizeof(timespan1), v->value, 0)); |
36697dc0 LP |
248 | } |
249 | } | |
871d7de4 LP |
250 | } |
251 | ||
252 | static void timer_set_state(Timer *t, TimerState state) { | |
253 | TimerState old_state; | |
034c6ed7 | 254 | assert(t); |
871d7de4 LP |
255 | |
256 | old_state = t->state; | |
257 | t->state = state; | |
258 | ||
36697dc0 | 259 | if (state != TIMER_WAITING) { |
718db961 LP |
260 | t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); |
261 | t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); | |
36697dc0 | 262 | } |
871d7de4 LP |
263 | |
264 | if (state != old_state) | |
f2341e0a | 265 | log_unit_debug(UNIT(t), "Changed %s -> %s", timer_state_to_string(old_state), timer_state_to_string(state)); |
871d7de4 | 266 | |
e2f3b44c | 267 | unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); |
871d7de4 LP |
268 | } |
269 | ||
270 | static void timer_enter_waiting(Timer *t, bool initial); | |
271 | ||
be847e82 | 272 | static int timer_coldplug(Unit *u) { |
871d7de4 LP |
273 | Timer *t = TIMER(u); |
274 | ||
275 | assert(t); | |
276 | assert(t->state == TIMER_DEAD); | |
277 | ||
278 | if (t->deserialized_state != t->state) { | |
279 | ||
be847e82 LP |
280 | if (t->deserialized_state == TIMER_WAITING) |
281 | timer_enter_waiting(t, false); | |
282 | else | |
871d7de4 LP |
283 | timer_set_state(t, t->deserialized_state); |
284 | } | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
067d72c9 | 289 | static void timer_enter_dead(Timer *t, TimerResult f) { |
871d7de4 LP |
290 | assert(t); |
291 | ||
067d72c9 LP |
292 | if (f != TIMER_SUCCESS) |
293 | t->result = f; | |
871d7de4 | 294 | |
067d72c9 | 295 | timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); |
871d7de4 LP |
296 | } |
297 | ||
dedabea4 LP |
298 | static usec_t monotonic_to_boottime(usec_t t) { |
299 | usec_t a, b; | |
300 | ||
301 | if (t <= 0) | |
302 | return 0; | |
303 | ||
304 | a = now(CLOCK_BOOTTIME); | |
305 | b = now(CLOCK_MONOTONIC); | |
306 | ||
307 | if (t + a > b) | |
308 | return t + a - b; | |
309 | else | |
310 | return 0; | |
311 | } | |
312 | ||
871d7de4 | 313 | static void timer_enter_waiting(Timer *t, bool initial) { |
36697dc0 | 314 | bool found_monotonic = false, found_realtime = false; |
dedabea4 LP |
315 | usec_t ts_realtime, ts_monotonic; |
316 | usec_t base = 0; | |
317 | TimerValue *v; | |
871d7de4 LP |
318 | int r; |
319 | ||
dedabea4 LP |
320 | /* If we shall wake the system we use the boottime clock |
321 | * rather than the monotonic clock. */ | |
322 | ||
323 | ts_realtime = now(CLOCK_REALTIME); | |
324 | ts_monotonic = now(t->wake_system ? CLOCK_BOOTTIME : CLOCK_MONOTONIC); | |
325 | t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0; | |
871d7de4 LP |
326 | |
327 | LIST_FOREACH(value, v, t->values) { | |
328 | ||
329 | if (v->disabled) | |
330 | continue; | |
331 | ||
36697dc0 | 332 | if (v->base == TIMER_CALENDAR) { |
06642d17 LP |
333 | usec_t b; |
334 | ||
335 | /* If we know the last time this was | |
336 | * triggered, schedule the job based relative | |
337 | * to that. If we don't just start from | |
338 | * now. */ | |
36697dc0 | 339 | |
dedabea4 | 340 | b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime; |
06642d17 LP |
341 | |
342 | r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); | |
36697dc0 LP |
343 | if (r < 0) |
344 | continue; | |
345 | ||
36697dc0 LP |
346 | if (!found_realtime) |
347 | t->next_elapse_realtime = v->next_elapse; | |
10717a1a | 348 | else |
36697dc0 | 349 | t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); |
871d7de4 | 350 | |
36697dc0 | 351 | found_realtime = true; |
871d7de4 | 352 | |
36697dc0 LP |
353 | } else { |
354 | switch (v->base) { | |
871d7de4 | 355 | |
36697dc0 LP |
356 | case TIMER_ACTIVE: |
357 | if (state_translation_table[t->state] == UNIT_ACTIVE) | |
358 | base = UNIT(t)->inactive_exit_timestamp.monotonic; | |
359 | else | |
dedabea4 | 360 | base = ts_monotonic; |
36697dc0 | 361 | break; |
871d7de4 | 362 | |
36697dc0 | 363 | case TIMER_BOOT: |
c1d9ba99 MS |
364 | if (detect_container() <= 0) { |
365 | /* CLOCK_MONOTONIC equals the uptime on Linux */ | |
366 | base = 0; | |
367 | break; | |
368 | } | |
369 | /* In a container we don't want to include the time the host | |
370 | * was already up when the container started, so count from | |
371 | * our own startup. Fall through. */ | |
36697dc0 LP |
372 | case TIMER_STARTUP: |
373 | base = UNIT(t)->manager->userspace_timestamp.monotonic; | |
374 | break; | |
871d7de4 | 375 | |
36697dc0 | 376 | case TIMER_UNIT_ACTIVE: |
871d7de4 | 377 | |
e41e1943 LP |
378 | base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic; |
379 | ||
380 | if (base <= 0) | |
06642d17 | 381 | base = t->last_trigger.monotonic; |
e41e1943 LP |
382 | |
383 | if (base <= 0) | |
36697dc0 | 384 | continue; |
871d7de4 | 385 | |
36697dc0 | 386 | break; |
871d7de4 | 387 | |
36697dc0 | 388 | case TIMER_UNIT_INACTIVE: |
871d7de4 | 389 | |
e41e1943 LP |
390 | base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic; |
391 | ||
392 | if (base <= 0) | |
06642d17 | 393 | base = t->last_trigger.monotonic; |
e41e1943 LP |
394 | |
395 | if (base <= 0) | |
36697dc0 | 396 | continue; |
871d7de4 | 397 | |
36697dc0 | 398 | break; |
871d7de4 | 399 | |
36697dc0 LP |
400 | default: |
401 | assert_not_reached("Unknown timer base"); | |
402 | } | |
871d7de4 | 403 | |
dedabea4 LP |
404 | if (t->wake_system) |
405 | base = monotonic_to_boottime(base); | |
406 | ||
36697dc0 LP |
407 | v->next_elapse = base + v->value; |
408 | ||
dedabea4 | 409 | if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { |
e41e1943 | 410 | /* This is a one time trigger, disable it now */ |
36697dc0 LP |
411 | v->disabled = true; |
412 | continue; | |
413 | } | |
414 | ||
415 | if (!found_monotonic) | |
dedabea4 | 416 | t->next_elapse_monotonic_or_boottime = v->next_elapse; |
36697dc0 | 417 | else |
dedabea4 | 418 | t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse); |
36697dc0 LP |
419 | |
420 | found_monotonic = true; | |
421 | } | |
871d7de4 LP |
422 | } |
423 | ||
36697dc0 | 424 | if (!found_monotonic && !found_realtime) { |
f2341e0a | 425 | log_unit_debug(UNIT(t), "Timer is elapsed."); |
871d7de4 LP |
426 | timer_set_state(t, TIMER_ELAPSED); |
427 | return; | |
428 | } | |
429 | ||
36697dc0 LP |
430 | if (found_monotonic) { |
431 | char buf[FORMAT_TIMESPAN_MAX]; | |
dedabea4 | 432 | |
f2341e0a | 433 | 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 | 434 | |
718db961 | 435 | if (t->monotonic_event_source) { |
dedabea4 | 436 | r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime); |
718db961 LP |
437 | if (r < 0) |
438 | goto fail; | |
439 | ||
440 | r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT); | |
cbf60d0a LP |
441 | if (r < 0) |
442 | goto fail; | |
443 | } else { | |
444 | ||
6a0f1f6d LP |
445 | r = sd_event_add_time( |
446 | UNIT(t)->manager->event, | |
447 | &t->monotonic_event_source, | |
dedabea4 LP |
448 | t->wake_system ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC, |
449 | t->next_elapse_monotonic_or_boottime, t->accuracy_usec, | |
6a0f1f6d | 450 | timer_dispatch, t); |
cbf60d0a LP |
451 | if (r < 0) |
452 | goto fail; | |
718db961 | 453 | |
cbf60d0a LP |
454 | (void) sd_event_source_set_description(t->monotonic_event_source, "timer-monotonic"); |
455 | } | |
7dfbe2e3 | 456 | |
718db961 | 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]; | |
f2341e0a | 466 | log_unit_debug(UNIT(t), "Realtime timer elapses at %s.", 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); | |
cbf60d0a LP |
474 | if (r < 0) |
475 | goto fail; | |
476 | } else { | |
6a0f1f6d LP |
477 | r = sd_event_add_time( |
478 | UNIT(t)->manager->event, | |
479 | &t->realtime_event_source, | |
dedabea4 | 480 | t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME, |
6a0f1f6d LP |
481 | t->next_elapse_realtime, t->accuracy_usec, |
482 | timer_dispatch, t); | |
cbf60d0a LP |
483 | if (r < 0) |
484 | goto fail; | |
718db961 | 485 | |
cbf60d0a LP |
486 | (void) sd_event_source_set_description(t->realtime_event_source, "timer-realtime"); |
487 | } | |
7dfbe2e3 | 488 | |
718db961 | 489 | } else if (t->realtime_event_source) { |
718db961 | 490 | |
06642d17 | 491 | r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); |
718db961 LP |
492 | if (r < 0) |
493 | goto fail; | |
494 | } | |
871d7de4 LP |
495 | |
496 | timer_set_state(t, TIMER_WAITING); | |
497 | return; | |
498 | ||
499 | fail: | |
f2341e0a | 500 | log_unit_warning_errno(UNIT(t), r, "Failed to enter waiting state: %m"); |
067d72c9 | 501 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
502 | } |
503 | ||
504 | static void timer_enter_running(Timer *t) { | |
718db961 | 505 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
871d7de4 | 506 | int r; |
398ef8ba | 507 | |
871d7de4 LP |
508 | assert(t); |
509 | ||
ba3e67a7 | 510 | /* Don't start job if we are supposed to go down */ |
31afa0a4 | 511 | if (unit_stop_pending(UNIT(t))) |
ba3e67a7 LP |
512 | return; |
513 | ||
3ecaa09b LP |
514 | r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)), |
515 | JOB_REPLACE, true, &error, NULL); | |
36697dc0 | 516 | if (r < 0) |
871d7de4 LP |
517 | goto fail; |
518 | ||
06642d17 LP |
519 | dual_timestamp_get(&t->last_trigger); |
520 | ||
472fc28f | 521 | if (t->stamp_path) |
ee735086 | 522 | touch_file(t->stamp_path, true, t->last_trigger.realtime, UID_INVALID, GID_INVALID, MODE_INVALID); |
e41e1943 | 523 | |
871d7de4 LP |
524 | timer_set_state(t, TIMER_RUNNING); |
525 | return; | |
526 | ||
527 | fail: | |
f2341e0a | 528 | log_unit_warning(UNIT(t), "Failed to queue unit startup job: %s", bus_error_message(&error, r)); |
067d72c9 | 529 | timer_enter_dead(t, TIMER_FAILURE_RESOURCES); |
871d7de4 LP |
530 | } |
531 | ||
532 | static int timer_start(Unit *u) { | |
533 | Timer *t = TIMER(u); | |
779042e7 | 534 | TimerValue *v; |
871d7de4 LP |
535 | |
536 | assert(t); | |
fdf20a31 | 537 | assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED); |
01f78473 | 538 | |
3ecaa09b | 539 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 540 | return -ENOENT; |
871d7de4 | 541 | |
06642d17 LP |
542 | t->last_trigger = DUAL_TIMESTAMP_NULL; |
543 | ||
779042e7 MC |
544 | /* Reenable all timers that depend on unit activation time */ |
545 | LIST_FOREACH(value, v, t->values) | |
546 | if (v->base == TIMER_ACTIVE) | |
547 | v->disabled = false; | |
548 | ||
06642d17 LP |
549 | if (t->stamp_path) { |
550 | struct stat st; | |
551 | ||
552 | if (stat(t->stamp_path, &st) >= 0) | |
553 | t->last_trigger.realtime = timespec_load(&st.st_atim); | |
472fc28f TB |
554 | else if (errno == ENOENT) |
555 | /* The timer has never run before, | |
556 | * make sure a stamp file exists. | |
557 | */ | |
ee735086 | 558 | touch_file(t->stamp_path, true, USEC_INFINITY, UID_INVALID, GID_INVALID, MODE_INVALID); |
06642d17 LP |
559 | } |
560 | ||
067d72c9 | 561 | t->result = TIMER_SUCCESS; |
871d7de4 | 562 | timer_enter_waiting(t, true); |
82a2b6bb | 563 | return 1; |
871d7de4 LP |
564 | } |
565 | ||
566 | static int timer_stop(Unit *u) { | |
567 | Timer *t = TIMER(u); | |
568 | ||
569 | assert(t); | |
570 | assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); | |
571 | ||
067d72c9 | 572 | timer_enter_dead(t, TIMER_SUCCESS); |
82a2b6bb | 573 | return 1; |
871d7de4 LP |
574 | } |
575 | ||
576 | static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { | |
577 | Timer *t = TIMER(u); | |
578 | ||
579 | assert(u); | |
580 | assert(f); | |
581 | assert(fds); | |
582 | ||
583 | unit_serialize_item(u, f, "state", timer_state_to_string(t->state)); | |
067d72c9 | 584 | unit_serialize_item(u, f, "result", timer_result_to_string(t->result)); |
871d7de4 | 585 | |
06642d17 LP |
586 | if (t->last_trigger.realtime > 0) |
587 | unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime); | |
588 | ||
589 | if (t->last_trigger.monotonic > 0) | |
590 | unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic); | |
591 | ||
871d7de4 LP |
592 | return 0; |
593 | } | |
594 | ||
595 | static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
596 | Timer *t = TIMER(u); | |
06642d17 | 597 | int r; |
871d7de4 LP |
598 | |
599 | assert(u); | |
600 | assert(key); | |
601 | assert(value); | |
602 | assert(fds); | |
603 | ||
604 | if (streq(key, "state")) { | |
605 | TimerState state; | |
606 | ||
36697dc0 LP |
607 | state = timer_state_from_string(value); |
608 | if (state < 0) | |
f2341e0a | 609 | log_unit_debug(u, "Failed to parse state value: %s", value); |
871d7de4 LP |
610 | else |
611 | t->deserialized_state = state; | |
067d72c9 LP |
612 | } else if (streq(key, "result")) { |
613 | TimerResult f; | |
614 | ||
615 | f = timer_result_from_string(value); | |
616 | if (f < 0) | |
f2341e0a | 617 | log_unit_debug(u, "Failed to parse result value: %s", value); |
067d72c9 LP |
618 | else if (f != TIMER_SUCCESS) |
619 | t->result = f; | |
06642d17 LP |
620 | } else if (streq(key, "last-trigger-realtime")) { |
621 | ||
622 | r = safe_atou64(value, &t->last_trigger.realtime); | |
623 | if (r < 0) | |
f2341e0a | 624 | log_unit_debug(u, "Failed to parse last-trigger-realtime value: %s", value); |
06642d17 LP |
625 | |
626 | } else if (streq(key, "last-trigger-monotonic")) { | |
627 | ||
628 | r = safe_atou64(value, &t->last_trigger.monotonic); | |
629 | if (r < 0) | |
f2341e0a | 630 | log_unit_debug(u, "Failed to parse last-trigger-monotonic value: %s", value); |
067d72c9 | 631 | |
871d7de4 | 632 | } else |
f2341e0a | 633 | log_unit_debug(u, "Unknown serialization key: %s", key); |
871d7de4 LP |
634 | |
635 | return 0; | |
034c6ed7 LP |
636 | } |
637 | ||
44a6b1b6 | 638 | _pure_ static UnitActiveState timer_active_state(Unit *u) { |
871d7de4 LP |
639 | assert(u); |
640 | ||
641 | return state_translation_table[TIMER(u)->state]; | |
642 | } | |
643 | ||
44a6b1b6 | 644 | _pure_ static const char *timer_sub_state_to_string(Unit *u) { |
871d7de4 LP |
645 | assert(u); |
646 | ||
647 | return timer_state_to_string(TIMER(u)->state); | |
648 | } | |
649 | ||
718db961 LP |
650 | static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) { |
651 | Timer *t = TIMER(userdata); | |
871d7de4 LP |
652 | |
653 | assert(t); | |
5cb5a6ff | 654 | |
871d7de4 | 655 | if (t->state != TIMER_WAITING) |
718db961 | 656 | return 0; |
5cb5a6ff | 657 | |
f2341e0a | 658 | log_unit_debug(UNIT(t), "Timer elapsed."); |
871d7de4 | 659 | timer_enter_running(t); |
718db961 | 660 | return 0; |
5cb5a6ff LP |
661 | } |
662 | ||
3ecaa09b LP |
663 | static void timer_trigger_notify(Unit *u, Unit *other) { |
664 | Timer *t = TIMER(u); | |
665 | TimerValue *v; | |
871d7de4 | 666 | |
3ecaa09b LP |
667 | assert(u); |
668 | assert(other); | |
871d7de4 | 669 | |
3ecaa09b LP |
670 | if (other->load_state != UNIT_LOADED) |
671 | return; | |
871d7de4 | 672 | |
3ecaa09b LP |
673 | /* Reenable all timers that depend on unit state */ |
674 | LIST_FOREACH(value, v, t->values) | |
675 | if (v->base == TIMER_UNIT_ACTIVE || | |
676 | v->base == TIMER_UNIT_INACTIVE) | |
677 | v->disabled = false; | |
01f78473 | 678 | |
3ecaa09b | 679 | switch (t->state) { |
871d7de4 | 680 | |
3ecaa09b LP |
681 | case TIMER_WAITING: |
682 | case TIMER_ELAPSED: | |
871d7de4 | 683 | |
3ecaa09b LP |
684 | /* Recalculate sleep time */ |
685 | timer_enter_waiting(t, false); | |
686 | break; | |
871d7de4 | 687 | |
3ecaa09b | 688 | case TIMER_RUNNING: |
871d7de4 | 689 | |
3ecaa09b | 690 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) { |
f2341e0a | 691 | log_unit_debug(UNIT(t), "Got notified about unit deactivation."); |
871d7de4 | 692 | timer_enter_waiting(t, false); |
3ecaa09b LP |
693 | } |
694 | break; | |
871d7de4 | 695 | |
3ecaa09b LP |
696 | case TIMER_DEAD: |
697 | case TIMER_FAILED: | |
698 | break; | |
871d7de4 | 699 | |
3ecaa09b LP |
700 | default: |
701 | assert_not_reached("Unknown timer state"); | |
871d7de4 | 702 | } |
871d7de4 LP |
703 | } |
704 | ||
fdf20a31 | 705 | static void timer_reset_failed(Unit *u) { |
5632e374 LP |
706 | Timer *t = TIMER(u); |
707 | ||
708 | assert(t); | |
709 | ||
fdf20a31 | 710 | if (t->state == TIMER_FAILED) |
5632e374 LP |
711 | timer_set_state(t, TIMER_DEAD); |
712 | ||
067d72c9 | 713 | t->result = TIMER_SUCCESS; |
5632e374 LP |
714 | } |
715 | ||
8742514c LP |
716 | static void timer_time_change(Unit *u) { |
717 | Timer *t = TIMER(u); | |
718 | ||
719 | assert(u); | |
720 | ||
721 | if (t->state != TIMER_WAITING) | |
722 | return; | |
723 | ||
f2341e0a | 724 | log_unit_debug(u, "Time change, recalculating next elapse."); |
8742514c LP |
725 | timer_enter_waiting(t, false); |
726 | } | |
727 | ||
871d7de4 | 728 | static const char* const timer_base_table[_TIMER_BASE_MAX] = { |
03fae018 LP |
729 | [TIMER_ACTIVE] = "OnActiveSec", |
730 | [TIMER_BOOT] = "OnBootSec", | |
731 | [TIMER_STARTUP] = "OnStartupSec", | |
732 | [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", | |
36697dc0 LP |
733 | [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", |
734 | [TIMER_CALENDAR] = "OnCalendar" | |
871d7de4 LP |
735 | }; |
736 | ||
737 | DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); | |
738 | ||
067d72c9 LP |
739 | static const char* const timer_result_table[_TIMER_RESULT_MAX] = { |
740 | [TIMER_SUCCESS] = "success", | |
741 | [TIMER_FAILURE_RESOURCES] = "resources" | |
742 | }; | |
743 | ||
744 | DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); | |
745 | ||
87f0e418 | 746 | const UnitVTable timer_vtable = { |
7d17cfbc | 747 | .object_size = sizeof(Timer), |
718db961 | 748 | |
f975e971 LP |
749 | .sections = |
750 | "Unit\0" | |
751 | "Timer\0" | |
752 | "Install\0", | |
d8a812d1 | 753 | .private_section = "Timer", |
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 | |
718db961 | 777 | .bus_vtable = bus_timer_vtable, |
d8a812d1 WC |
778 | .bus_set_property = bus_timer_set_property, |
779 | ||
780 | .can_transient = true, | |
5cb5a6ff | 781 | }; |