]> git.ipfire.org Git - thirdparty/systemd.git/blobdiff - src/core/timer.c
Bug #944: Deletion of unnecessary checks before a few calls of systemd functions
[thirdparty/systemd.git] / src / core / timer.c
index dc0f289c7afafc943e8d742ac88d4f1663a15fff..7027f83dfd600abbc8deae4c48e9782c5914296b 100644 (file)
@@ -27,8 +27,6 @@
 #include "dbus-timer.h"
 #include "special.h"
 #include "bus-util.h"
-#include "bus-error.h"
-#include "mkdir.h"
 
 static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = {
         [TIMER_DEAD] = UNIT_INACTIVE,
@@ -58,10 +56,7 @@ void timer_free_values(Timer *t) {
 
         while ((v = t->values)) {
                 LIST_REMOVE(value, t->values, v);
-
-                if (v->calendar_spec)
-                        calendar_spec_free(v->calendar_spec);
-
+                calendar_spec_free(v->calendar_spec);
                 free(v);
         }
 }
@@ -86,7 +81,7 @@ static int timer_verify(Timer *t) {
                 return 0;
 
         if (!t->values) {
-                log_error_unit(UNIT(t)->id, "%s lacks value setting. Refusing.", UNIT(t)->id);
+                log_unit_error(UNIT(t), "Timer unit lacks value setting. Refusing.");
                 return -EINVAL;
         }
 
@@ -103,7 +98,7 @@ static int timer_add_default_dependencies(Timer *t) {
         if (r < 0)
                 return r;
 
-        if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) {
+        if (UNIT(t)->manager->running_as == MANAGER_SYSTEM) {
                 r = unit_add_two_dependencies_by_name(UNIT(t), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true);
                 if (r < 0)
                         return r;
@@ -129,7 +124,7 @@ static int timer_setup_persistent(Timer *t) {
         if (!t->persistent)
                 return 0;
 
-        if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) {
+        if (UNIT(t)->manager->running_as == MANAGER_SYSTEM) {
 
                 r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers");
                 if (r < 0)
@@ -147,10 +142,8 @@ static int timer_setup_persistent(Timer *t) {
                         _cleanup_free_ char *h = NULL;
 
                         r = get_home_dir(&h);
-                        if (r < 0) {
-                                log_error("Failed to determine home directory: %s", strerror(-r));
-                                return r;
-                        }
+                        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);
                 }
@@ -242,7 +235,7 @@ static void timer_dump(Unit *u, FILE *f, const char *prefix) {
                                 "%s%s: %s\n",
                                 prefix,
                                 timer_base_to_string(v->base),
-                                strna(format_timespan(timespan1, sizeof(timespan1), v->value, 0)));
+                                format_timespan(timespan1, sizeof(timespan1), v->value, 0));
                 }
         }
 }
@@ -260,10 +253,7 @@ static void timer_set_state(Timer *t, TimerState state) {
         }
 
         if (state != old_state)
-                log_debug_unit(UNIT(t)->id,
-                               "%s changed %s -> %s", UNIT(t)->id,
-                               timer_state_to_string(old_state),
-                               timer_state_to_string(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);
 }
@@ -419,7 +409,7 @@ static void timer_enter_waiting(Timer *t, bool initial) {
         }
 
         if (!found_monotonic && !found_realtime) {
-                log_debug_unit(UNIT(t)->id, "%s: Timer is elapsed.", UNIT(t)->id);
+                log_unit_debug(UNIT(t), "Timer is elapsed.");
                 timer_set_state(t, TIMER_ELAPSED);
                 return;
         }
@@ -427,9 +417,7 @@ static void timer_enter_waiting(Timer *t, bool initial) {
         if (found_monotonic) {
                 char buf[FORMAT_TIMESPAN_MAX];
 
-                log_debug_unit(UNIT(t)->id, "%s: Monotonic timer elapses in %s.",
-                               UNIT(t)->id,
-                               format_timespan(buf, sizeof(buf), t->next_elapse_monotonic_or_boottime > ts_monotonic ? t->next_elapse_monotonic_or_boottime - ts_monotonic : 0, 0));
+                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));
 
                 if (t->monotonic_event_source) {
                         r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime);
@@ -437,15 +425,21 @@ static void timer_enter_waiting(Timer *t, bool initial) {
                                 goto fail;
 
                         r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT);
-                } else
+                        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;
+                        if (r < 0)
+                                goto fail;
+
+                        (void) sd_event_source_set_description(t->monotonic_event_source, "timer-monotonic");
+                }
 
         } else if (t->monotonic_event_source) {
 
@@ -456,7 +450,7 @@ static void timer_enter_waiting(Timer *t, bool initial) {
 
         if (found_realtime) {
                 char buf[FORMAT_TIMESTAMP_MAX];
-                log_debug_unit(UNIT(t)->id, "%s: Realtime timer elapses at %s.", UNIT(t)->id, format_timestamp(buf, sizeof(buf), 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);
@@ -464,15 +458,20 @@ static void timer_enter_waiting(Timer *t, bool initial) {
                                 goto fail;
 
                         r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_ONESHOT);
-                } else
+                        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;
+                        if (r < 0)
+                                goto fail;
+
+                        (void) sd_event_source_set_description(t->realtime_event_source, "timer-realtime");
+                }
 
         } else if (t->realtime_event_source) {
 
@@ -485,7 +484,7 @@ static void timer_enter_waiting(Timer *t, bool initial) {
         return;
 
 fail:
-        log_warning_unit(UNIT(t)->id, "%s failed to enter waiting state: %s", UNIT(t)->id, strerror(-r));
+        log_unit_warning_errno(UNIT(t), r, "Failed to enter waiting state: %m");
         timer_enter_dead(t, TIMER_FAILURE_RESOURCES);
 }
 
@@ -507,20 +506,19 @@ static void timer_enter_running(Timer *t) {
         dual_timestamp_get(&t->last_trigger);
 
         if (t->stamp_path)
-                touch_file(t->stamp_path, true, t->last_trigger.realtime, (uid_t) -1, (gid_t) -1, 0);
+                touch_file(t->stamp_path, true, t->last_trigger.realtime, UID_INVALID, GID_INVALID, 0);
 
         timer_set_state(t, TIMER_RUNNING);
         return;
 
 fail:
-        log_warning_unit(UNIT(t)->id,
-                         "%s failed to queue unit startup job: %s",
-                         UNIT(t)->id, bus_error_message(&error, r));
+        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;
 
         assert(t);
         assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED);
@@ -530,6 +528,11 @@ static int timer_start(Unit *u) {
 
         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;
 
@@ -539,12 +542,12 @@ static int timer_start(Unit *u) {
                         /* The timer has never run before,
                          * make sure a stamp file exists.
                          */
-                        touch_file(t->stamp_path, true, (usec_t) -1, (uid_t) -1, (gid_t) -1, 0);
+                        touch_file(t->stamp_path, true, USEC_INFINITY, UID_INVALID, GID_INVALID, 0);
         }
 
         t->result = TIMER_SUCCESS;
         timer_enter_waiting(t, true);
-        return 0;
+        return 1;
 }
 
 static int timer_stop(Unit *u) {
@@ -554,7 +557,7 @@ static int timer_stop(Unit *u) {
         assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED);
 
         timer_enter_dead(t, TIMER_SUCCESS);
-        return 0;
+        return 1;
 }
 
 static int timer_serialize(Unit *u, FILE *f, FDSet *fds) {
@@ -590,7 +593,7 @@ static int timer_deserialize_item(Unit *u, const char *key, const char *value, F
 
                 state = timer_state_from_string(value);
                 if (state < 0)
-                        log_debug_unit(u->id, "Failed to parse state value %s", value);
+                        log_unit_debug(u, "Failed to parse state value: %s", value);
                 else
                         t->deserialized_state = state;
         } else if (streq(key, "result")) {
@@ -598,23 +601,23 @@ static int timer_deserialize_item(Unit *u, const char *key, const char *value, F
 
                 f = timer_result_from_string(value);
                 if (f < 0)
-                        log_debug_unit(u->id, "Failed to parse result value %s", value);
+                        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_debug_unit(u->id, "Failed to parse last-trigger-realtime value %s", value);
+                        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_debug_unit(u->id, "Failed to parse last-trigger-monotonic value %s", value);
+                        log_unit_debug(u, "Failed to parse last-trigger-monotonic value: %s", value);
 
         } else
-                log_debug_unit(u->id, "Unknown serialization key '%s'", key);
+                log_unit_debug(u, "Unknown serialization key: %s", key);
 
         return 0;
 }
@@ -639,7 +642,7 @@ static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) {
         if (t->state != TIMER_WAITING)
                 return 0;
 
-        log_debug_unit(UNIT(t)->id, "Timer elapsed on %s", UNIT(t)->id);
+        log_unit_debug(UNIT(t), "Timer elapsed.");
         timer_enter_running(t);
         return 0;
 }
@@ -672,7 +675,7 @@ static void timer_trigger_notify(Unit *u, Unit *other) {
         case TIMER_RUNNING:
 
                 if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) {
-                        log_debug_unit(UNIT(t)->id, "%s got notified about unit deactivation.", UNIT(t)->id);
+                        log_unit_debug(UNIT(t), "Got notified about unit deactivation.");
                         timer_enter_waiting(t, false);
                 }
                 break;
@@ -705,7 +708,7 @@ static void timer_time_change(Unit *u) {
         if (t->state != TIMER_WAITING)
                 return;
 
-        log_debug_unit(u->id, "%s: time change, recalculating next elapse.", u->id);
+        log_unit_debug(u, "Time change, recalculating next elapse.");
         timer_enter_waiting(t, false);
 }
 
@@ -744,6 +747,7 @@ const UnitVTable timer_vtable = {
                 "Unit\0"
                 "Timer\0"
                 "Install\0",
+        .private_section = "Timer",
 
         .init = timer_init,
         .done = timer_done,
@@ -769,4 +773,7 @@ const UnitVTable timer_vtable = {
 
         .bus_interface = "org.freedesktop.systemd1.Timer",
         .bus_vtable = bus_timer_vtable,
+        .bus_set_property = bus_timer_set_property,
+
+        .can_transient = true,
 };