From d7a444593fb9469b224cd656dc052b2d0ed51ce7 Mon Sep 17 00:00:00 2001 From: Miroslav Lichvar Date: Wed, 24 Nov 2021 15:05:15 +0100 Subject: [PATCH] ntp: improve check for PTP socket Check for INVALID_SOCK_FD in case the PTP port is enabled, but opening one of the PTP sockets failed. --- ntp_io.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ntp_io.c b/ntp_io.c index 077a7cf..b9d5f13 100644 --- a/ntp_io.c +++ b/ntp_io.c @@ -332,7 +332,8 @@ NIO_OpenServerSocket(NTP_Remote_Address *remote_addr) static int is_ptp_socket(int sock_fd) { - return ptp_port > 0 && (sock_fd == ptp_sock_fd4 || sock_fd == ptp_sock_fd6); + return ptp_port > 0 && sock_fd != INVALID_SOCK_FD && + (sock_fd == ptp_sock_fd4 || sock_fd == ptp_sock_fd6); } /* ================================================== */