ntp_server: check for select() failures

Fix freeze after signal was handled.

ntp_server: check for select() failures
59a5b000 · Max Kellermann · d49a2ccb · 59a5b000
Commit 59a5b000 authored Aug 29, 2011 by Max Kellermann
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ntp_server.c src/ntp_server.c +3 -1

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--- a/src/ntp_server.c
+++ b/src/ntp_server.c
@@ -112,7 +112,9 @@ ntp_server_check(struct ntp_server *ntp, struct timeval *tout)

 	FD_SET(ntp->fd, &rdfds);
 	fdmax = ntp->fd;
-	select(fdmax + 1, &rdfds,NULL, NULL, tout);
+	if (select(fdmax + 1, &rdfds,NULL, NULL, tout) <= 0)
+		return false;
+
 	if (FD_ISSET(ntp->fd, &rdfds)) {
 		if (!ntp_server_handle(ntp)) {
 			g_debug("unable to send timing response\n");