uloop: ensure SIGCHLD is properly received on mac os x

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

diff --git a/uloop.c b/uloop.c
index 2de94f5fa5aa2a55b881989ec8f88c93d49a1f68..bf1721951917c0ae5688f3074a98e1de11a96a9c 100644 (file)
--- a/uloop.c
+++ b/uloop.c
@@ -57,6 +57,9 @@ static int cur_fd, cur_nfds;
 
 int uloop_init(void)
 {
+       struct timespec timeout = { 0, 0 };
+       struct kevent ev = {};
+
        if (poll_fd >= 0)
                return 0;
 
@@ -64,6 +67,9 @@ int uloop_init(void)
        if (poll_fd < 0)
                return -1;
 
+       EV_SET(&ev, SIGCHLD, EVFILT_SIGNAL, EV_ADD, 0, 0, 0);
+       kevent(poll_fd, &ev, 1, NULL, 0, &timeout);
+
        return 0;
 }