text: /**
   * Copyright 2001-2004 KnowNow, Inc.  All rights reserved.
   *
   * @KNOWNOW_LICENSE_START@
   * 
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 
   * 1. Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   * 
   * 2. Redistributions in binary form must reproduce the above copyright
   * notice, this list of conditions and the following disclaimer in the
   * documentation and/or other materials provided with the distribution.
   * 
   * 3. Neither the name of the KnowNow, Inc., nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   * 
   * @KNOWNOW_LICENSE_END@
   * 
   *
   * $Id: nonblock.c,v 1.2 2004/04/19 05:39:15 bsittler Exp $
   **/
  
  #include <unistd.h>
  #include <fcntl.h>
  #include "util.h"
  #include "nonblock.h"
  
  static unused char rcsid[] = "@(#) $Id: nonblock.c,v 1.2 2004/04/19 05:39:15 bsittler Exp $";
  
  int make_nonblocking(int sock)
  {
      /* incantations from Python 1.5.2 */
      int flags = fcntl(sock, F_GETFL, 0);
      int rv;
      if (flags < 0) return 0;
      rv = fcntl(sock, F_SETFL, flags | O_NDELAY);
      if (rv < 0) return 0;
      return 1;
      /* Windows requires ioctlsocket(sock, FIONBIO, (u_long*)&one) */
      /* BeOS requires setsockopt(sock, SOL_SOCKET, SO_NONBLOCK, 
       *                          (void*)&one, sizeof(one)); */
      /* OS/2 requires ioctl(sock, FIONBIO, (caddr_t)&one, sizeof(one)) */
  }
  