1 files changed, 72 insertions, 0 deletions
diff --git a/fdmisc.c b/fdmisc.c
new file mode 100644
index 0000000..5be3c8b
--- /dev/null
+++ b/fdmisc.c
@@ -0,0 +1,72 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "syshead.h"
+
+#include "fdmisc.h"
+#include "error.h"
+
+#include "memdbg.h"
+
+/* Set a file descriptor to non-blocking */
+bool
+set_nonblock_action (int fd)
+{
+#ifdef WIN32
+  u_long arg = 1;
+  if (ioctlsocket (fd, FIONBIO, &arg))
+    return false;
+#else
+  if (fcntl (fd, F_SETFL, O_NONBLOCK) < 0)
+    return false;
+#endif
+  return true;
+}
+
+/* Set a file descriptor to not be passed across execs */
+bool
+set_cloexec_action (int fd)
+{
+#ifndef WIN32
+  if (fcntl (fd, F_SETFD, FD_CLOEXEC) < 0)
+    return false;
+#endif
+  return true;
+}
+
+/* Set a file descriptor to non-blocking */
+void
+set_nonblock (int fd)
+{
+  if (!set_nonblock_action (fd))
+    msg (M_SOCKERR, "Set socket to non-blocking mode failed");
+}
+
+/* Set a file descriptor to not be passed across execs */
+void
+set_cloexec (int fd)
+{
+  if (!set_cloexec_action (fd))
+    msg (M_ERR, "Set FD_CLOEXEC flag on file descriptor failed");
+}