Prep v226: Apply missing fixes and changes to src/libelogind

3 files changed, 280 insertions, 125 deletions

diff --git a/src/libelogind/sd-bus/bus-match.c b/src/libelogind/sd-bus/bus-match.c
index 8ef30f55e..b1c000660 100644
--- a/src/libelogind/sd-bus/bus-match.c
+++ b/src/libelogind/sd-bus/bus-match.c
@@ -934,10 +934,11 @@ fail:
 /// UNNEEDED by elogind
 #if 0
 char *bus_match_to_string(struct bus_match_component *components, unsigned n_components) {
-        _cleanup_free_ FILE *f = NULL;
+        _cleanup_fclose_ FILE *f = NULL;
         char *buffer = NULL;
         size_t size = 0;
         unsigned i;
+		int r;
 
         if (n_components <= 0)
                 return strdup("");
diff --git a/src/libelogind/sd-event/sd-event.c b/src/libelogind/sd-event/sd-event.c
index a14ade221..062f19b56 100644
--- a/src/libelogind/sd-event/sd-event.c
+++ b/src/libelogind/sd-event/sd-event.c
@@ -56,9 +56,22 @@ typedef enum EventSourceType {
         _SOURCE_EVENT_SOURCE_TYPE_INVALID = -1
 } EventSourceType;
 
+/* All objects we use in epoll events start with this value, so that
+ * we know how to dispatch it */
+typedef enum WakeupType {
+        WAKEUP_NONE,
+        WAKEUP_EVENT_SOURCE,
+        WAKEUP_CLOCK_DATA,
+        WAKEUP_SIGNAL_DATA,
+        _WAKEUP_TYPE_MAX,
+        _WAKEUP_TYPE_INVALID = -1,
+} WakeupType;
+
 #define EVENT_SOURCE_IS_TIME(t) IN_SET((t), SOURCE_TIME_REALTIME, SOURCE_TIME_BOOTTIME, SOURCE_TIME_MONOTONIC, SOURCE_TIME_REALTIME_ALARM, SOURCE_TIME_BOOTTIME_ALARM)
 
 struct sd_event_source {
+        WakeupType wakeup;
+
         unsigned n_ref;
 
         sd_event *event;
@@ -120,6 +133,7 @@ struct sd_event_source {
 };
 
 struct clock_data {
+        WakeupType wakeup;
         int fd;
 
         /* For all clocks we maintain two priority queues each, one
@@ -136,11 +150,23 @@ struct clock_data {
         bool needs_rearm:1;
 };
 
+struct signal_data {
+        WakeupType wakeup;
+
+        /* For each priority we maintain one signal fd, so that we
+         * only have to dequeue a single event per priority at a
+         * time. */
+
+        int fd;
+        int64_t priority;
+        sigset_t sigset;
+        sd_event_source *current;
+};
+
 struct sd_event {
         unsigned n_ref;
 
         int epoll_fd;
-        int signal_fd;
         int watchdog_fd;
 
         Prioq *pending;
@@ -157,8 +183,8 @@ struct sd_event {
 
         usec_t perturb;
 
-        sigset_t sigset;
-        sd_event_source **signal_sources;
+        sd_event_source **signal_sources; /* indexed by signal number */
+        Hashmap *signal_data; /* indexed by priority */
 
         Hashmap *child_sources;
         unsigned n_enabled_child_sources;
@@ -355,6 +381,7 @@ static int exit_prioq_compare(const void *a, const void *b) {
 
 static void free_clock_data(struct clock_data *d) {
         assert(d);
+        assert(d->wakeup == WAKEUP_CLOCK_DATA);
 
         safe_close(d->fd);
         prioq_free(d->earliest);
@@ -378,7 +405,6 @@ static void event_free(sd_event *e) {
                 *(e->default_event_ptr) = NULL;
 
         safe_close(e->epoll_fd);
-        safe_close(e->signal_fd);
         safe_close(e->watchdog_fd);
 
         free_clock_data(&e->realtime);
@@ -392,6 +418,7 @@ static void event_free(sd_event *e) {
         prioq_free(e->exit);
 
         free(e->signal_sources);
+        hashmap_free(e->signal_data);
 
         hashmap_free(e->child_sources);
         set_free(e->post_sources);
@@ -409,13 +436,12 @@ _public_ int sd_event_new(sd_event** ret) {
                 return -ENOMEM;
 
         e->n_ref = 1;
-        e->signal_fd = e->watchdog_fd = e->epoll_fd = e->realtime.fd = e->boottime.fd = e->monotonic.fd = e->realtime_alarm.fd = e->boottime_alarm.fd = -1;
+        e->watchdog_fd = e->epoll_fd = e->realtime.fd = e->boottime.fd = e->monotonic.fd = e->realtime_alarm.fd = e->boottime_alarm.fd = -1;
         e->realtime.next = e->boottime.next = e->monotonic.next = e->realtime_alarm.next = e->boottime_alarm.next = USEC_INFINITY;
+        e->realtime.wakeup = e->boottime.wakeup = e->monotonic.wakeup = e->realtime_alarm.wakeup = e->boottime_alarm.wakeup = WAKEUP_CLOCK_DATA;
         e->original_pid = getpid();
         e->perturb = USEC_INFINITY;
 
-        assert_se(sigemptyset(&e->sigset) == 0);
-
         e->pending = prioq_new(pending_prioq_compare);
         if (!e->pending) {
                 r = -ENOMEM;
@@ -509,7 +535,6 @@ static int source_io_register(
                 r = epoll_ctl(s->event->epoll_fd, EPOLL_CTL_MOD, s->io.fd, &ev);
         else
                 r = epoll_ctl(s->event->epoll_fd, EPOLL_CTL_ADD, s->io.fd, &ev);
-
         if (r < 0)
                 return -errno;
 
@@ -594,45 +619,171 @@ static struct clock_data* event_get_clock_data(sd_event *e, EventSourceType t) {
         }
 }
 
-static bool need_signal(sd_event *e, int signal) {
-        return (e->signal_sources && e->signal_sources[signal] &&
-                e->signal_sources[signal]->enabled != SD_EVENT_OFF)
-                ||
-               (signal == SIGCHLD &&
-                e->n_enabled_child_sources > 0);
-}
+static int event_make_signal_data(
+                sd_event *e,
+                int sig,
+                struct signal_data **ret) {
 
-static int event_update_signal_fd(sd_event *e) {
         struct epoll_event ev = {};
-        bool add_to_epoll;
+        struct signal_data *d;
+        bool added = false;
+        sigset_t ss_copy;
+        int64_t priority;
         int r;
 
         assert(e);
 
         if (event_pid_changed(e))
+                return -ECHILD;
+
+        if (e->signal_sources && e->signal_sources[sig])
+                priority = e->signal_sources[sig]->priority;
+        else
+                priority = 0;
+
+        d = hashmap_get(e->signal_data, &priority);
+        if (d) {
+                if (sigismember(&d->sigset, sig) > 0) {
+                        if (ret)
+                                *ret = d;
                 return 0;
+                }
+        } else {
+                r = hashmap_ensure_allocated(&e->signal_data, &uint64_hash_ops);
+                if (r < 0)
+                        return r;
 
-        add_to_epoll = e->signal_fd < 0;
+                d = new0(struct signal_data, 1);
+                if (!d)
+                        return -ENOMEM;
 
-        r = signalfd(e->signal_fd, &e->sigset, SFD_NONBLOCK|SFD_CLOEXEC);
+                d->wakeup = WAKEUP_SIGNAL_DATA;
+                d->fd  = -1;
+                d->priority = priority;
+
+                r = hashmap_put(e->signal_data, &d->priority, d);
         if (r < 0)
-                return -errno;
+                        return r;
+
+                added = true;
+        }
 
-        e->signal_fd = r;
+        ss_copy = d->sigset;
+        assert_se(sigaddset(&ss_copy, sig) >= 0);
 
-        if (!add_to_epoll)
+        r = signalfd(d->fd, &ss_copy, SFD_NONBLOCK|SFD_CLOEXEC);
+        if (r < 0) {
+                r = -errno;
+                goto fail;
+        }
+
+        d->sigset = ss_copy;
+
+        if (d->fd >= 0) {
+                if (ret)
+                        *ret = d;
                 return 0;
+        }
+
+        d->fd = r;
 
         ev.events = EPOLLIN;
-        ev.data.ptr = INT_TO_PTR(SOURCE_SIGNAL);
+        ev.data.ptr = d;
 
-        r = epoll_ctl(e->epoll_fd, EPOLL_CTL_ADD, e->signal_fd, &ev);
+        r = epoll_ctl(e->epoll_fd, EPOLL_CTL_ADD, d->fd, &ev);
         if (r < 0) {
-                e->signal_fd = safe_close(e->signal_fd);
-                return -errno;
+                r = -errno;
+                goto fail;
         }
 
+        if (ret)
+                *ret = d;
+
         return 0;
+
+fail:
+        if (added) {
+                d->fd = safe_close(d->fd);
+                hashmap_remove(e->signal_data, &d->priority);
+                free(d);
+        }
+
+        return r;
+}
+
+static void event_unmask_signal_data(sd_event *e, struct signal_data *d, int sig) {
+        assert(e);
+        assert(d);
+
+        /* Turns off the specified signal in the signal data
+         * object. If the signal mask of the object becomes empty that
+         * way removes it. */
+
+        if (sigismember(&d->sigset, sig) == 0)
+                return;
+
+        assert_se(sigdelset(&d->sigset, sig) >= 0);
+
+        if (sigisemptyset(&d->sigset)) {
+
+                /* If all the mask is all-zero we can get rid of the structure */
+                hashmap_remove(e->signal_data, &d->priority);
+                assert(!d->current);
+                safe_close(d->fd);
+                free(d);
+                return;
+        }
+
+        assert(d->fd >= 0);
+
+        if (signalfd(d->fd, &d->sigset, SFD_NONBLOCK|SFD_CLOEXEC) < 0)
+                log_debug_errno(errno, "Failed to unset signal bit, ignoring: %m");
+}
+
+static void event_gc_signal_data(sd_event *e, const int64_t *priority, int sig) {
+        struct signal_data *d;
+        static const int64_t zero_priority = 0;
+
+        assert(e);
+
+        /* Rechecks if the specified signal is still something we are
+         * interested in. If not, we'll unmask it, and possibly drop
+         * the signalfd for it. */
+
+        if (sig == SIGCHLD &&
+            e->n_enabled_child_sources > 0)
+                return;
+
+        if (e->signal_sources &&
+            e->signal_sources[sig] &&
+            e->signal_sources[sig]->enabled != SD_EVENT_OFF)
+                return;
+
+        /*
+         * The specified signal might be enabled in three different queues:
+         *
+         * 1) the one that belongs to the priority passed (if it is non-NULL)
+         * 2) the one that belongs to the priority of the event source of the signal (if there is one)
+         * 3) the 0 priority (to cover the SIGCHLD case)
+         *
+         * Hence, let's remove it from all three here.
+         */
+
+        if (priority) {
+                d = hashmap_get(e->signal_data, priority);
+                if (d)
+                        event_unmask_signal_data(e, d, sig);
+        }
+
+        if (e->signal_sources && e->signal_sources[sig]) {
+                d = hashmap_get(e->signal_data, &e->signal_sources[sig]->priority);
+                if (d)
+                        event_unmask_signal_data(e, d, sig);
+        }
+
+        d = hashmap_get(e->signal_data, &zero_priority);
+        if (d)
+                event_unmask_signal_data(e, d, sig);
 }
 
 static void source_disconnect(sd_event_source *s) {
@@ -671,17 +822,11 @@ static void source_disconnect(sd_event_source *s) {
 
         case SOURCE_SIGNAL:
                 if (s->signal.sig > 0) {
+
                         if (s->event->signal_sources)
                                 s->event->signal_sources[s->signal.sig] = NULL;
 
-                        /* If the signal was on and now it is off... */
-                        if (s->enabled != SD_EVENT_OFF && !need_signal(s->event, s->signal.sig)) {
-                                assert_se(sigdelset(&s->event->sigset, s->signal.sig) == 0);
-
-                                (void) event_update_signal_fd(s->event);
-                                /* If disabling failed, we might get a spurious event,
-                                 * but otherwise nothing bad should happen. */
-                        }
+                        event_gc_signal_data(s->event, &s->priority, s->signal.sig);
                 }
 
                 break;
@@ -691,18 +836,10 @@ static void source_disconnect(sd_event_source *s) {
                         if (s->enabled != SD_EVENT_OFF) {
                                 assert(s->event->n_enabled_child_sources > 0);
                                 s->event->n_enabled_child_sources--;
-
-                                /* We know the signal was on, if it is off now... */
-                                if (!need_signal(s->event, SIGCHLD)) {
-                                        assert_se(sigdelset(&s->event->sigset, SIGCHLD) == 0);
-
-                                        (void) event_update_signal_fd(s->event);
-                                        /* If disabling failed, we might get a spurious event,
-                                         * but otherwise nothing bad should happen. */
-                                }
                         }
 
-                        hashmap_remove(s->event->child_sources, INT_TO_PTR(s->child.pid));
+                        (void) hashmap_remove(s->event->child_sources, INT_TO_PTR(s->child.pid));
+                        event_gc_signal_data(s->event, &s->priority, SIGCHLD);
                 }
 
                 break;
@@ -781,6 +918,14 @@ static int source_set_pending(sd_event_source *s, bool b) {
                 d->needs_rearm = true;
         }
 
+        if (s->type == SOURCE_SIGNAL && !b) {
+                struct signal_data *d;
+
+                d = hashmap_get(s->event->signal_data, &s->priority);
+                if (d && d->current == s)
+                        d->current = NULL;
+        }
+
         return 0;
 }
 
@@ -830,6 +975,7 @@ _public_ int sd_event_add_io(
         if (!s)
                 return -ENOMEM;
 
+        s->wakeup = WAKEUP_EVENT_SOURCE;
         s->io.fd = fd;
         s->io.events = events;
         s->io.callback = callback;
@@ -886,7 +1032,7 @@ static int event_setup_timer_fd(
                 return -errno;
 
         ev.events = EPOLLIN;
-        ev.data.ptr = INT_TO_PTR(clock_to_event_source_type(clock));
+        ev.data.ptr = d;
 
         r = epoll_ctl(e->epoll_fd, EPOLL_CTL_ADD, fd, &ev);
         if (r < 0) {
@@ -996,9 +1142,9 @@ _public_ int sd_event_add_signal(
                 void *userdata) {
 
         sd_event_source *s;
+        struct signal_data *d;
         sigset_t ss;
         int r;
-        bool previous;
 
         assert_return(e, -EINVAL);
         assert_return(sig > 0, -EINVAL);
@@ -1023,8 +1169,6 @@ _public_ int sd_event_add_signal(
         } else if (e->signal_sources[sig])
                 return -EBUSY;
 
-        previous = need_signal(e, sig);
-
         s = source_new(e, !ret, SOURCE_SIGNAL);
         if (!s)
                 return -ENOMEM;
@@ -1036,15 +1180,11 @@ _public_ int sd_event_add_signal(
 
         e->signal_sources[sig] = s;
 
-        if (!previous) {
-                assert_se(sigaddset(&e->sigset, sig) == 0);
-
-                r = event_update_signal_fd(e);
+        r = event_make_signal_data(e, sig, &d);
                 if (r < 0) {
                         source_free(s);
                         return r;
                 }
-        }
 
         /* Use the signal name as description for the event source by default */
         (void) sd_event_source_set_description(s, signal_to_string(sig));
@@ -1065,7 +1205,6 @@ _public_ int sd_event_add_child(
 
         sd_event_source *s;
         int r;
-        bool previous;
 
         assert_return(e, -EINVAL);
         assert_return(pid > 1, -EINVAL);
@@ -1082,8 +1221,6 @@ _public_ int sd_event_add_child(
         if (hashmap_contains(e->child_sources, INT_TO_PTR(pid)))
                 return -EBUSY;
 
-        previous = need_signal(e, SIGCHLD);
-
         s = source_new(e, !ret, SOURCE_CHILD);
         if (!s)
                 return -ENOMEM;
@@ -1102,15 +1239,12 @@ _public_ int sd_event_add_child(
 
         e->n_enabled_child_sources ++;
 
-        if (!previous) {
-                assert_se(sigaddset(&e->sigset, SIGCHLD) == 0);
-
-                r = event_update_signal_fd(e);
+        r = event_make_signal_data(e, SIGCHLD, NULL);
                 if (r < 0) {
+                e->n_enabled_child_sources--;
                         source_free(s);
                         return r;
                 }
-        }
 
         e->need_process_child = true;
 
@@ -1424,6 +1558,8 @@ _public_ int sd_event_source_get_priority(sd_event_source *s, int64_t *priority)
 #endif // 0
 
 _public_ int sd_event_source_set_priority(sd_event_source *s, int64_t priority) {
+        int r;
+
         assert_return(s, -EINVAL);
         assert_return(s->event->state != SD_EVENT_FINISHED, -ESTALE);
         assert_return(!event_pid_changed(s->event), -ECHILD);
@@ -1431,6 +1567,24 @@ _public_ int sd_event_source_set_priority(sd_event_source *s, int64_t priority)
         if (s->priority == priority)
                 return 0;
 
+        if (s->type == SOURCE_SIGNAL && s->enabled != SD_EVENT_OFF) {
+                struct signal_data *old, *d;
+
+                /* Move us from the signalfd belonging to the old
+                 * priority to the signalfd of the new priority */
+
+                assert_se(old = hashmap_get(s->event->signal_data, &s->priority));
+
+                s->priority = priority;
+
+                r = event_make_signal_data(s->event, s->signal.sig, &d);
+                if (r < 0) {
+                        s->priority = old->priority;
+                        return r;
+                }
+
+                event_unmask_signal_data(s->event, old, s->signal.sig);
+        } else
         s->priority = priority;
 
         if (s->pending)
@@ -1499,34 +1653,18 @@ _public_ int sd_event_source_set_enabled(sd_event_source *s, int m) {
                 }
 
                 case SOURCE_SIGNAL:
-                        assert(need_signal(s->event, s->signal.sig));
-
                         s->enabled = m;
 
-                        if (!need_signal(s->event, s->signal.sig)) {
-                                assert_se(sigdelset(&s->event->sigset, s->signal.sig) == 0);
-
-                                (void) event_update_signal_fd(s->event);
-                                /* If disabling failed, we might get a spurious event,
-                                 * but otherwise nothing bad should happen. */
-                        }
-
+                        event_gc_signal_data(s->event, &s->priority, s->signal.sig);
                         break;
 
                 case SOURCE_CHILD:
-                        assert(need_signal(s->event, SIGCHLD));
-
                         s->enabled = m;
 
                         assert(s->event->n_enabled_child_sources > 0);
                         s->event->n_enabled_child_sources--;
 
-                        if (!need_signal(s->event, SIGCHLD)) {
-                                assert_se(sigdelset(&s->event->sigset, SIGCHLD) == 0);
-
-                                (void) event_update_signal_fd(s->event);
-                        }
-
+                        event_gc_signal_data(s->event, &s->priority, SIGCHLD);
                         break;
 
                 case SOURCE_EXIT:
@@ -1572,37 +1710,33 @@ _public_ int sd_event_source_set_enabled(sd_event_source *s, int m) {
                 }
 
                 case SOURCE_SIGNAL:
-                        /* Check status before enabling. */
-                        if (!need_signal(s->event, s->signal.sig)) {
-                                assert_se(sigaddset(&s->event->sigset, s->signal.sig) == 0);
 
-                                r = event_update_signal_fd(s->event);
+                        s->enabled = m;
+
+                        r = event_make_signal_data(s->event, s->signal.sig, NULL);
                                 if (r < 0) {
                                         s->enabled = SD_EVENT_OFF;
+                                event_gc_signal_data(s->event, &s->priority, s->signal.sig);
                                         return r;
                                 }
-                        }
 
-                        s->enabled = m;
                         break;
 
                 case SOURCE_CHILD:
-                        /* Check status before enabling. */
-                        if (s->enabled == SD_EVENT_OFF) {
-                                if (!need_signal(s->event, SIGCHLD)) {
-                                        assert_se(sigaddset(&s->event->sigset, s->signal.sig) == 0);
 
-                                        r = event_update_signal_fd(s->event);
+                        if (s->enabled == SD_EVENT_OFF)
+                                s->event->n_enabled_child_sources++;
+
+                        s->enabled = m;
+
+                        r = event_make_signal_data(s->event, SIGCHLD, NULL);
                                         if (r < 0) {
                                                 s->enabled = SD_EVENT_OFF;
+                                s->event->n_enabled_child_sources--;
+                                event_gc_signal_data(s->event, &s->priority, SIGCHLD);
                                                 return r;
                                         }
-                                }
 
-                                s->event->n_enabled_child_sources++;
-                        }
-
-                        s->enabled = m;
                         break;
 
                 case SOURCE_EXIT:
@@ -2052,20 +2186,35 @@ static int process_child(sd_event *e) {
         return 0;
 }
 
-static int process_signal(sd_event *e, uint32_t events) {
+static int process_signal(sd_event *e, struct signal_data *d, uint32_t events) {
         bool read_one = false;
         int r;
 
         assert(e);
-
         assert_return(events == EPOLLIN, -EIO);
 
+        /* If there's a signal queued on this priority and SIGCHLD is
+           on this priority too, then make sure to recheck the
+           children we watch. This is because we only ever dequeue
+           the first signal per priority, and if we dequeue one, and
+           SIGCHLD might be enqueued later we wouldn't know, but we
+           might have higher priority children we care about hence we
+           need to check that explicitly. */
+
+        if (sigismember(&d->sigset, SIGCHLD))
+                e->need_process_child = true;
+
+        /* If there's already an event source pending for this
+         * priority we don't read another */
+        if (d->current)
+                return 0;
+
         for (;;) {
                 struct signalfd_siginfo si;
                 ssize_t n;
                 sd_event_source *s = NULL;
 
-                n = read(e->signal_fd, &si, sizeof(si));
+                n = read(d->fd, &si, sizeof(si));
                 if (n < 0) {
                         if (errno == EAGAIN || errno == EINTR)
                                 return read_one;
@@ -2080,24 +2229,21 @@ static int process_signal(sd_event *e, uint32_t events) {
 
                 read_one = true;
 
-                if (si.ssi_signo == SIGCHLD) {
-                        r = process_child(e);
-                        if (r < 0)
-                                return r;
-                        if (r > 0)
-                                continue;
-                }
-
                 if (e->signal_sources)
                         s = e->signal_sources[si.ssi_signo];
-
                 if (!s)
                         continue;
+                if (s->pending)
+                        continue;
 
                 s->signal.siginfo = si;
+                d->current = s;
+
                 r = source_set_pending(s, true);
                 if (r < 0)
                         return r;
+
+                return 1;
         }
 }
 
@@ -2415,23 +2561,31 @@ _public_ int sd_event_wait(sd_event *e, uint64_t timeout) {
 
         for (i = 0; i < m; i++) {
 
-                if (ev_queue[i].data.ptr == INT_TO_PTR(SOURCE_TIME_REALTIME))
-                        r = flush_timer(e, e->realtime.fd, ev_queue[i].events, &e->realtime.next);
-                else if (ev_queue[i].data.ptr == INT_TO_PTR(SOURCE_TIME_BOOTTIME))
-                        r = flush_timer(e, e->boottime.fd, ev_queue[i].events, &e->boottime.next);
-                else if (ev_queue[i].data.ptr == INT_TO_PTR(SOURCE_TIME_MONOTONIC))
-                        r = flush_timer(e, e->monotonic.fd, ev_queue[i].events, &e->monotonic.next);
-                else if (ev_queue[i].data.ptr == INT_TO_PTR(SOURCE_TIME_REALTIME_ALARM))
-                        r = flush_timer(e, e->realtime_alarm.fd, ev_queue[i].events, &e->realtime_alarm.next);
-                else if (ev_queue[i].data.ptr == INT_TO_PTR(SOURCE_TIME_BOOTTIME_ALARM))
-                        r = flush_timer(e, e->boottime_alarm.fd, ev_queue[i].events, &e->boottime_alarm.next);
-                else if (ev_queue[i].data.ptr == INT_TO_PTR(SOURCE_SIGNAL))
-                        r = process_signal(e, ev_queue[i].events);
-                else if (ev_queue[i].data.ptr == INT_TO_PTR(SOURCE_WATCHDOG))
+                if (ev_queue[i].data.ptr == INT_TO_PTR(SOURCE_WATCHDOG))
                         r = flush_timer(e, e->watchdog_fd, ev_queue[i].events, NULL);
-                else
+                else {
+                        WakeupType *t = ev_queue[i].data.ptr;
+
+                        switch (*t) {
+
+                        case WAKEUP_EVENT_SOURCE:
                         r = process_io(e, ev_queue[i].data.ptr, ev_queue[i].events);
+                                break;
 
+                        case WAKEUP_CLOCK_DATA: {
+                                struct clock_data *d = ev_queue[i].data.ptr;
+                                r = flush_timer(e, d->fd, ev_queue[i].events, &d->next);
+                                break;
+                        }
+
+                        case WAKEUP_SIGNAL_DATA:
+                                r = process_signal(e, ev_queue[i].data.ptr, ev_queue[i].events);
+                                break;
+
+                        default:
+                                assert_not_reached("Invalid wake-up pointer");
+                        }
+                }
                 if (r < 0)
                         goto finish;
         }
diff --git a/src/libelogind/sd-login/sd-login.c b/src/libelogind/sd-login/sd-login.c
index 55da26e9d..f4dd7feec 100644
--- a/src/libelogind/sd-login/sd-login.c
+++ b/src/libelogind/sd-login/sd-login.c
@@ -108,7 +108,7 @@ _public_ int sd_pid_get_cgroup(pid_t pid, char **cgroup) {
         assert_return(pid >= 0, -EINVAL);
         assert_return(cgroup, -EINVAL);
 
-        r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &c);
+        r = cg_pid_get_path(ELOGIND_CGROUP_CONTROLLER, pid, &c);
         if (r < 0)
                 return r;
 
@@ -645,10 +645,10 @@ _public_ int sd_seat_get_active(const char *seat, char **session, uid_t *uid) {
                 return r;
 
         if (session && !s)
-                return -ENOENT;
+                return -ENODATA;
 
         if (uid && !t)
-                return -ENOENT;
+                return -ENODATA;
 
         if (uid && t) {
                 r = parse_uid(t, uid);