sd-event: make sure to create a signal queue for the right signal

We should never access the "signal" part of the event source unless the
event source is actually for a signal. In this case it's a child pid
handler however, hence make sure to use the right signal.

This is a fix for PR #1177, which in turn was a fix for
9da4cb2be260ed123f2676cb85cb350c527b1492.

diff --git a/src/libsystemd/sd-event/sd-event.c b/src/libsystemd/sd-event/sd-event.c
index 62b63ec..fd39a56 100644 (file)
--- a/src/libsystemd/sd-event/sd-event.c
+++ b/src/libsystemd/sd-event/sd-event.c
@@ -1708,7 +1708,7 @@ _public_ int sd_event_source_set_enabled(sd_event_source *s, int m) {
 
                         s->enabled = m;
 
-                        r = event_make_signal_data(s->event, s->signal.sig, NULL);
+                        r = event_make_signal_data(s->event, SIGCHLD, NULL);
                         if (r < 0) {
                                 s->enabled = SD_EVENT_OFF;
                                 s->event->n_enabled_child_sources--;