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event: fix crash on child-source state modifications

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Setting a child-source state to anything but SD_EVENT_OFF currently does
nothing. The condition logic is flawed. Move the state update *below* the
test for the previous state.

Fixes a crash if you call:
  sd_event_source_set_enabled(source, SD_EVENT_ON);
  sd_event_source_unref(source);
on a child-source in its own callback.
This commit is contained in:
David Herrmann 2014-02-19 13:24:38 +01:00
parent b67f562c9c
commit 7a0d4a3d16
1 changed files with 2 additions and 2 deletions
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4
src/libsystemd/sd-event/sd-event.c
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@ -1286,8 +1286,6 @@ _public_ int sd_event_source_set_enabled(sd_event_source *s, int m) {
break;
case SOURCE_CHILD:
s->enabled = m;
if (s->enabled == SD_EVENT_OFF) {
s->event->n_enabled_child_sources++;
@ -1296,6 +1294,8 @@ _public_ int sd_event_source_set_enabled(sd_event_source *s, int m) {
event_update_signal_fd(s->event);
}
}
s->enabled = m;
break;
case SOURCE_EXIT: