/*
  *  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) 2002-2009 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");

 }