diff options
Diffstat (limited to 'src/core/timer.c')
| -rw-r--r-- | src/core/timer.c | 865 |
1 files changed, 0 insertions, 865 deletions
diff --git a/src/core/timer.c b/src/core/timer.c deleted file mode 100644 index 2469a517ea..0000000000 --- a/src/core/timer.c +++ /dev/null @@ -1,865 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> - -#include "alloc-util.h" -#include "bus-error.h" -#include "bus-util.h" -#include "dbus-timer.h" -#include "fs-util.h" -#include "parse-util.h" -#include "random-util.h" -#include "special.h" -#include "string-table.h" -#include "string-util.h" -#include "timer.h" -#include "unit-name.h" -#include "unit.h" -#include "user-util.h" -#include "virt.h" - -static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = { - [TIMER_DEAD] = UNIT_INACTIVE, - [TIMER_WAITING] = UNIT_ACTIVE, - [TIMER_RUNNING] = UNIT_ACTIVE, - [TIMER_ELAPSED] = UNIT_ACTIVE, - [TIMER_FAILED] = UNIT_FAILED -}; - -static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata); - -static void timer_init(Unit *u) { - Timer *t = TIMER(u); - - assert(u); - assert(u->load_state == UNIT_STUB); - - t->next_elapse_monotonic_or_boottime = USEC_INFINITY; - t->next_elapse_realtime = USEC_INFINITY; - t->accuracy_usec = u->manager->default_timer_accuracy_usec; - t->remain_after_elapse = true; -} - -void timer_free_values(Timer *t) { - TimerValue *v; - - assert(t); - - while ((v = t->values)) { - LIST_REMOVE(value, t->values, v); - calendar_spec_free(v->calendar_spec); - free(v); - } -} - -static void timer_done(Unit *u) { - Timer *t = TIMER(u); - - assert(t); - - timer_free_values(t); - - t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); - t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); - - free(t->stamp_path); -} - -static int timer_verify(Timer *t) { - assert(t); - - if (UNIT(t)->load_state != UNIT_LOADED) - return 0; - - if (!t->values) { - log_unit_error(UNIT(t), "Timer unit lacks value setting. Refusing."); - return -EINVAL; - } - - return 0; -} - -static int timer_add_default_dependencies(Timer *t) { - int r; - TimerValue *v; - - assert(t); - - if (!UNIT(t)->default_dependencies) - return 0; - - r = unit_add_dependency_by_name(UNIT(t), UNIT_BEFORE, SPECIAL_TIMERS_TARGET, NULL, true); - if (r < 0) - return r; - - if (MANAGER_IS_SYSTEM(UNIT(t)->manager)) { - r = unit_add_two_dependencies_by_name(UNIT(t), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true); - if (r < 0) - return r; - - LIST_FOREACH(value, v, t->values) { - if (v->base == TIMER_CALENDAR) { - r = unit_add_dependency_by_name(UNIT(t), UNIT_AFTER, SPECIAL_TIME_SYNC_TARGET, NULL, true); - if (r < 0) - return r; - break; - } - } - } - - return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); -} - -static int timer_setup_persistent(Timer *t) { - int r; - - assert(t); - - if (!t->persistent) - return 0; - - if (MANAGER_IS_SYSTEM(UNIT(t)->manager)) { - - r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers"); - if (r < 0) - return r; - - t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id); - } else { - const char *e; - - e = getenv("XDG_DATA_HOME"); - if (e) - t->stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id, NULL); - else { - - _cleanup_free_ char *h = NULL; - - r = get_home_dir(&h); - if (r < 0) - return log_unit_error_errno(UNIT(t), r, "Failed to determine home directory: %m"); - - t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL); - } - } - - if (!t->stamp_path) - return log_oom(); - - return 0; -} - -static int timer_load(Unit *u) { - Timer *t = TIMER(u); - int r; - - assert(u); - assert(u->load_state == UNIT_STUB); - - r = unit_load_fragment_and_dropin(u); - if (r < 0) - return r; - - if (u->load_state == UNIT_LOADED) { - - if (set_isempty(u->dependencies[UNIT_TRIGGERS])) { - Unit *x; - - r = unit_load_related_unit(u, ".service", &x); - if (r < 0) - return r; - - r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); - if (r < 0) - return r; - } - - r = timer_setup_persistent(t); - if (r < 0) - return r; - - r = timer_add_default_dependencies(t); - if (r < 0) - return r; - } - - return timer_verify(t); -} - -static void timer_dump(Unit *u, FILE *f, const char *prefix) { - char buf[FORMAT_TIMESPAN_MAX]; - Timer *t = TIMER(u); - Unit *trigger; - TimerValue *v; - - trigger = UNIT_TRIGGER(u); - - fprintf(f, - "%sTimer State: %s\n" - "%sResult: %s\n" - "%sUnit: %s\n" - "%sPersistent: %s\n" - "%sWakeSystem: %s\n" - "%sAccuracy: %s\n" - "%sRemainAfterElapse: %s\n", - prefix, timer_state_to_string(t->state), - prefix, timer_result_to_string(t->result), - prefix, trigger ? trigger->id : "n/a", - prefix, yes_no(t->persistent), - prefix, yes_no(t->wake_system), - prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1), - prefix, yes_no(t->remain_after_elapse)); - - LIST_FOREACH(value, v, t->values) { - - if (v->base == TIMER_CALENDAR) { - _cleanup_free_ char *p = NULL; - - calendar_spec_to_string(v->calendar_spec, &p); - - fprintf(f, - "%s%s: %s\n", - prefix, - timer_base_to_string(v->base), - strna(p)); - } else { - char timespan1[FORMAT_TIMESPAN_MAX]; - - fprintf(f, - "%s%s: %s\n", - prefix, - timer_base_to_string(v->base), - format_timespan(timespan1, sizeof(timespan1), v->value, 0)); - } - } -} - -static void timer_set_state(Timer *t, TimerState state) { - TimerState old_state; - assert(t); - - old_state = t->state; - t->state = state; - - if (state != TIMER_WAITING) { - t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source); - t->realtime_event_source = sd_event_source_unref(t->realtime_event_source); - t->next_elapse_monotonic_or_boottime = USEC_INFINITY; - t->next_elapse_realtime = USEC_INFINITY; - } - - if (state != old_state) - log_unit_debug(UNIT(t), "Changed %s -> %s", timer_state_to_string(old_state), timer_state_to_string(state)); - - unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); -} - -static void timer_enter_waiting(Timer *t, bool initial); - -static int timer_coldplug(Unit *u) { - Timer *t = TIMER(u); - - assert(t); - assert(t->state == TIMER_DEAD); - - if (t->deserialized_state == t->state) - return 0; - - if (t->deserialized_state == TIMER_WAITING) - timer_enter_waiting(t, false); - else - timer_set_state(t, t->deserialized_state); - - return 0; -} - -static void timer_enter_dead(Timer *t, TimerResult f) { - assert(t); - - if (t->result == TIMER_SUCCESS) - t->result = f; - - timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD); -} - -static void timer_enter_elapsed(Timer *t, bool leave_around) { - assert(t); - - /* If a unit is marked with RemainAfterElapse=yes we leave it - * around even after it elapsed once, so that starting it - * later again does not necessarily mean immediate - * retriggering. We unconditionally leave units with - * TIMER_UNIT_ACTIVE or TIMER_UNIT_INACTIVE triggers around, - * since they might be restarted automatically at any time - * later on. */ - - if (t->remain_after_elapse || leave_around) - timer_set_state(t, TIMER_ELAPSED); - else - timer_enter_dead(t, TIMER_SUCCESS); -} - -static usec_t monotonic_to_boottime(usec_t t) { - usec_t a, b; - - if (t <= 0) - return 0; - - a = now(clock_boottime_or_monotonic()); - b = now(CLOCK_MONOTONIC); - - if (t + a > b) - return t + a - b; - else - return 0; -} - -static void add_random(Timer *t, usec_t *v) { - char s[FORMAT_TIMESPAN_MAX]; - usec_t add; - - assert(t); - assert(v); - - if (t->random_usec == 0) - return; - if (*v == USEC_INFINITY) - return; - - add = random_u64() % t->random_usec; - - if (*v + add < *v) /* overflow */ - *v = (usec_t) -2; /* Highest possible value, that is not USEC_INFINITY */ - else - *v += add; - - log_unit_info(UNIT(t), "Adding %s random time.", format_timespan(s, sizeof(s), add, 0)); -} - -static void timer_enter_waiting(Timer *t, bool initial) { - bool found_monotonic = false, found_realtime = false; - usec_t ts_realtime, ts_monotonic; - usec_t base = 0; - bool leave_around = false; - TimerValue *v; - Unit *trigger; - int r; - - assert(t); - - trigger = UNIT_TRIGGER(UNIT(t)); - if (!trigger) { - log_unit_error(UNIT(t), "Unit to trigger vanished."); - timer_enter_dead(t, TIMER_FAILURE_RESOURCES); - return; - } - - /* If we shall wake the system we use the boottime clock - * rather than the monotonic clock. */ - - ts_realtime = now(CLOCK_REALTIME); - ts_monotonic = now(t->wake_system ? clock_boottime_or_monotonic() : CLOCK_MONOTONIC); - t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0; - - LIST_FOREACH(value, v, t->values) { - - if (v->disabled) - continue; - - if (v->base == TIMER_CALENDAR) { - usec_t b; - - /* If we know the last time this was - * triggered, schedule the job based relative - * to that. If we don't just start from - * now. */ - - b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime; - - r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse); - if (r < 0) - continue; - - if (!found_realtime) - t->next_elapse_realtime = v->next_elapse; - else - t->next_elapse_realtime = MIN(t->next_elapse_realtime, v->next_elapse); - - found_realtime = true; - - } else { - switch (v->base) { - - case TIMER_ACTIVE: - if (state_translation_table[t->state] == UNIT_ACTIVE) - base = UNIT(t)->inactive_exit_timestamp.monotonic; - else - base = ts_monotonic; - break; - - case TIMER_BOOT: - if (detect_container() <= 0) { - /* CLOCK_MONOTONIC equals the uptime on Linux */ - base = 0; - break; - } - /* In a container we don't want to include the time the host - * was already up when the container started, so count from - * our own startup. Fall through. */ - case TIMER_STARTUP: - base = UNIT(t)->manager->userspace_timestamp.monotonic; - break; - - case TIMER_UNIT_ACTIVE: - leave_around = true; - base = trigger->inactive_exit_timestamp.monotonic; - - if (base <= 0) - base = t->last_trigger.monotonic; - - if (base <= 0) - continue; - - break; - - case TIMER_UNIT_INACTIVE: - leave_around = true; - base = trigger->inactive_enter_timestamp.monotonic; - - if (base <= 0) - base = t->last_trigger.monotonic; - - if (base <= 0) - continue; - - break; - - default: - assert_not_reached("Unknown timer base"); - } - - if (t->wake_system) - base = monotonic_to_boottime(base); - - v->next_elapse = base + v->value; - - if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) { - /* This is a one time trigger, disable it now */ - v->disabled = true; - continue; - } - - if (!found_monotonic) - t->next_elapse_monotonic_or_boottime = v->next_elapse; - else - t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse); - - found_monotonic = true; - } - } - - if (!found_monotonic && !found_realtime) { - log_unit_debug(UNIT(t), "Timer is elapsed."); - timer_enter_elapsed(t, leave_around); - return; - } - - if (found_monotonic) { - char buf[FORMAT_TIMESPAN_MAX]; - usec_t left; - - add_random(t, &t->next_elapse_monotonic_or_boottime); - - left = t->next_elapse_monotonic_or_boottime > ts_monotonic ? t->next_elapse_monotonic_or_boottime - ts_monotonic : 0; - log_unit_debug(UNIT(t), "Monotonic timer elapses in %s.", format_timespan(buf, sizeof(buf), left, 0)); - - if (t->monotonic_event_source) { - r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime); - if (r < 0) - goto fail; - - r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT); - if (r < 0) - goto fail; - } else { - - r = sd_event_add_time( - UNIT(t)->manager->event, - &t->monotonic_event_source, - t->wake_system ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC, - t->next_elapse_monotonic_or_boottime, t->accuracy_usec, - timer_dispatch, t); - if (r < 0) - goto fail; - - (void) sd_event_source_set_description(t->monotonic_event_source, "timer-monotonic"); - } - - } else if (t->monotonic_event_source) { - - r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_OFF); - if (r < 0) - goto fail; - } - - if (found_realtime) { - char buf[FORMAT_TIMESTAMP_MAX]; - - add_random(t, &t->next_elapse_realtime); - - log_unit_debug(UNIT(t), "Realtime timer elapses at %s.", format_timestamp(buf, sizeof(buf), t->next_elapse_realtime)); - - if (t->realtime_event_source) { - r = sd_event_source_set_time(t->realtime_event_source, t->next_elapse_realtime); - if (r < 0) - goto fail; - - r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_ONESHOT); - if (r < 0) - goto fail; - } else { - r = sd_event_add_time( - UNIT(t)->manager->event, - &t->realtime_event_source, - t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME, - t->next_elapse_realtime, t->accuracy_usec, - timer_dispatch, t); - if (r < 0) - goto fail; - - (void) sd_event_source_set_description(t->realtime_event_source, "timer-realtime"); - } - - } else if (t->realtime_event_source) { - - r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF); - if (r < 0) - goto fail; - } - - timer_set_state(t, TIMER_WAITING); - return; - -fail: - log_unit_warning_errno(UNIT(t), r, "Failed to enter waiting state: %m"); - timer_enter_dead(t, TIMER_FAILURE_RESOURCES); -} - -static void timer_enter_running(Timer *t) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - Unit *trigger; - int r; - - assert(t); - - /* Don't start job if we are supposed to go down */ - if (unit_stop_pending(UNIT(t))) - return; - - trigger = UNIT_TRIGGER(UNIT(t)); - if (!trigger) { - log_unit_error(UNIT(t), "Unit to trigger vanished."); - timer_enter_dead(t, TIMER_FAILURE_RESOURCES); - return; - } - - r = manager_add_job(UNIT(t)->manager, JOB_START, trigger, JOB_REPLACE, &error, NULL); - if (r < 0) - goto fail; - - dual_timestamp_get(&t->last_trigger); - - if (t->stamp_path) - touch_file(t->stamp_path, true, t->last_trigger.realtime, UID_INVALID, GID_INVALID, MODE_INVALID); - - timer_set_state(t, TIMER_RUNNING); - return; - -fail: - log_unit_warning(UNIT(t), "Failed to queue unit startup job: %s", bus_error_message(&error, r)); - timer_enter_dead(t, TIMER_FAILURE_RESOURCES); -} - -static int timer_start(Unit *u) { - Timer *t = TIMER(u); - TimerValue *v; - Unit *trigger; - int r; - - assert(t); - assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED); - - trigger = UNIT_TRIGGER(u); - if (!trigger || trigger->load_state != UNIT_LOADED) { - log_unit_error(u, "Refusing to start, unit to trigger not loaded."); - return -ENOENT; - } - - r = unit_start_limit_test(u); - if (r < 0) { - timer_enter_dead(t, TIMER_FAILURE_START_LIMIT_HIT); - return r; - } - - r = unit_acquire_invocation_id(u); - if (r < 0) - return r; - - t->last_trigger = DUAL_TIMESTAMP_NULL; - - /* Reenable all timers that depend on unit activation time */ - LIST_FOREACH(value, v, t->values) - if (v->base == TIMER_ACTIVE) - v->disabled = false; - - if (t->stamp_path) { - struct stat st; - - if (stat(t->stamp_path, &st) >= 0) - t->last_trigger.realtime = timespec_load(&st.st_atim); - else if (errno == ENOENT) - /* The timer has never run before, - * make sure a stamp file exists. - */ - (void) touch_file(t->stamp_path, true, USEC_INFINITY, UID_INVALID, GID_INVALID, MODE_INVALID); - } - - t->result = TIMER_SUCCESS; - timer_enter_waiting(t, true); - return 1; -} - -static int timer_stop(Unit *u) { - Timer *t = TIMER(u); - - assert(t); - assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); - - timer_enter_dead(t, TIMER_SUCCESS); - return 1; -} - -static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { - Timer *t = TIMER(u); - - assert(u); - assert(f); - assert(fds); - - unit_serialize_item(u, f, "state", timer_state_to_string(t->state)); - unit_serialize_item(u, f, "result", timer_result_to_string(t->result)); - - if (t->last_trigger.realtime > 0) - unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime); - - if (t->last_trigger.monotonic > 0) - unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic); - - return 0; -} - -static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { - Timer *t = TIMER(u); - int r; - - assert(u); - assert(key); - assert(value); - assert(fds); - - if (streq(key, "state")) { - TimerState state; - - state = timer_state_from_string(value); - if (state < 0) - log_unit_debug(u, "Failed to parse state value: %s", value); - else - t->deserialized_state = state; - } else if (streq(key, "result")) { - TimerResult f; - - f = timer_result_from_string(value); - if (f < 0) - log_unit_debug(u, "Failed to parse result value: %s", value); - else if (f != TIMER_SUCCESS) - t->result = f; - } else if (streq(key, "last-trigger-realtime")) { - - r = safe_atou64(value, &t->last_trigger.realtime); - if (r < 0) - log_unit_debug(u, "Failed to parse last-trigger-realtime value: %s", value); - - } else if (streq(key, "last-trigger-monotonic")) { - - r = safe_atou64(value, &t->last_trigger.monotonic); - if (r < 0) - log_unit_debug(u, "Failed to parse last-trigger-monotonic value: %s", value); - - } else - log_unit_debug(u, "Unknown serialization key: %s", key); - - return 0; -} - -_pure_ static UnitActiveState timer_active_state(Unit *u) { - assert(u); - - return state_translation_table[TIMER(u)->state]; -} - -_pure_ static const char *timer_sub_state_to_string(Unit *u) { - assert(u); - - return timer_state_to_string(TIMER(u)->state); -} - -static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) { - Timer *t = TIMER(userdata); - - assert(t); - - if (t->state != TIMER_WAITING) - return 0; - - log_unit_debug(UNIT(t), "Timer elapsed."); - timer_enter_running(t); - return 0; -} - -static void timer_trigger_notify(Unit *u, Unit *other) { - Timer *t = TIMER(u); - TimerValue *v; - - assert(u); - assert(other); - - if (other->load_state != UNIT_LOADED) - return; - - /* Reenable all timers that depend on unit state */ - LIST_FOREACH(value, v, t->values) - if (v->base == TIMER_UNIT_ACTIVE || - v->base == TIMER_UNIT_INACTIVE) - v->disabled = false; - - switch (t->state) { - - case TIMER_WAITING: - case TIMER_ELAPSED: - - /* Recalculate sleep time */ - timer_enter_waiting(t, false); - break; - - case TIMER_RUNNING: - - if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) { - log_unit_debug(UNIT(t), "Got notified about unit deactivation."); - timer_enter_waiting(t, false); - } - break; - - case TIMER_DEAD: - case TIMER_FAILED: - break; - - default: - assert_not_reached("Unknown timer state"); - } -} - -static void timer_reset_failed(Unit *u) { - Timer *t = TIMER(u); - - assert(t); - - if (t->state == TIMER_FAILED) - timer_set_state(t, TIMER_DEAD); - - t->result = TIMER_SUCCESS; -} - -static void timer_time_change(Unit *u) { - Timer *t = TIMER(u); - - assert(u); - - if (t->state != TIMER_WAITING) - return; - - log_unit_debug(u, "Time change, recalculating next elapse."); - timer_enter_waiting(t, false); -} - -static const char* const timer_base_table[_TIMER_BASE_MAX] = { - [TIMER_ACTIVE] = "OnActiveSec", - [TIMER_BOOT] = "OnBootSec", - [TIMER_STARTUP] = "OnStartupSec", - [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", - [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec", - [TIMER_CALENDAR] = "OnCalendar" -}; - -DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); - -static const char* const timer_result_table[_TIMER_RESULT_MAX] = { - [TIMER_SUCCESS] = "success", - [TIMER_FAILURE_RESOURCES] = "resources", - [TIMER_FAILURE_START_LIMIT_HIT] = "start-limit-hit", -}; - -DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); - -const UnitVTable timer_vtable = { - .object_size = sizeof(Timer), - - .sections = - "Unit\0" - "Timer\0" - "Install\0", - .private_section = "Timer", - - .init = timer_init, - .done = timer_done, - .load = timer_load, - - .coldplug = timer_coldplug, - - .dump = timer_dump, - - .start = timer_start, - .stop = timer_stop, - - .serialize = timer_serialize, - .deserialize_item = timer_deserialize_item, - - .active_state = timer_active_state, - .sub_state_to_string = timer_sub_state_to_string, - - .trigger_notify = timer_trigger_notify, - - .reset_failed = timer_reset_failed, - .time_change = timer_time_change, - - .bus_vtable = bus_timer_vtable, - .bus_set_property = bus_timer_set_property, - - .can_transient = true, -}; 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