Set FD_CLOEXEC flag on all sockets.

[tinc] / src / uml_device.c

diff --git a/src/uml_device.c b/src/uml_device.c
index 26bcb01..a0b87f9 100644 (file)
--- a/src/uml_device.c
+++ b/src/uml_device.c
@@ -1,7 +1,7 @@
 /*
     device.c -- UML network socket
     Copyright (C) 2002-2005 Ivo Timmermans,
-                  2002-2011 Guus Sliepen <guus@tinc-vpn.org>
+                  2002-2012 Guus Sliepen <guus@tinc-vpn.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -77,6 +77,10 @@ static bool setup_device(void) {
                return false;
        }
 
+#ifdef FD_CLOEXEC
+       fcntl(write_fd, F_SETFD, FD_CLOEXEC);
+#endif
+
        setsockopt(write_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
 
        if(fcntl(write_fd, F_SETFL, O_NONBLOCK) < 0) {
@@ -91,6 +95,10 @@ static bool setup_device(void) {
                return false;
        }
 
+#ifdef FD_CLOEXEC
+       fcntl(data_fd, F_SETFD, FD_CLOEXEC);
+#endif
+
        setsockopt(data_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
 
        if(fcntl(data_fd, F_SETFL, O_NONBLOCK) < 0) {
@@ -118,6 +126,10 @@ static bool setup_device(void) {
                return false;
        }
 
+#ifdef FD_CLOEXEC
+       fcntl(device_fd, F_SETFD, FD_CLOEXEC);
+#endif
+
        setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
 
        if(fcntl(listen_fd, F_SETFL, O_NONBLOCK) < 0) {
@@ -181,6 +193,10 @@ static bool read_packet(vpn_packet_t *packet) {
                                return false;
                        }
 
+#ifdef FD_CLOEXEC
+                       fcntl(request_fd, F_SETFD, FD_CLOEXEC);
+#endif
+
                        if(fcntl(listen_fd, F_SETFL, O_NONBLOCK) < 0) {
                                logger(LOG_ERR, "System call `%s' failed: %s", "fcntl", strerror(errno));
                                running = false;