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      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel (at) haxx.se>, et al.
      9  *
     10  * This software is licensed as described in the file COPYING, which
     11  * you should have received as part of this distribution. The terms
     12  * are also available at http://curl.haxx.se/docs/copyright.html.
     13  *
     14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
     15  * copies of the Software, and permit persons to whom the Software is
     16  * furnished to do so, under the terms of the COPYING file.
     17  *
     18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
     19  * KIND, either express or implied.
     20  *
     21  ***************************************************************************/
     22 
     23 #include "curl_setup.h"
     24 
     25 #ifdef HAVE_SYS_IOCTL_H
     26 #include <sys/ioctl.h>
     27 #endif
     28 #ifdef HAVE_FCNTL_H
     29 #include <fcntl.h>
     30 #endif
     31 
     32 #if (defined(HAVE_IOCTL_FIONBIO) && defined(NETWARE))
     33 #include <sys/filio.h>
     34 #endif
     35 #ifdef __VMS
     36 #include <in.h>
     37 #include <inet.h>
     38 #endif
     39 
     40 #include "nonblock.h"
     41 
     42 /*
     43  * curlx_nonblock() set the given socket to either blocking or non-blocking
     44  * mode based on the 'nonblock' boolean argument. This function is highly
     45  * portable.
     46  */
     47 int curlx_nonblock(curl_socket_t sockfd,    /* operate on this */
     48                    int nonblock   /* TRUE or FALSE */)
     49 {
     50 #if defined(USE_BLOCKING_SOCKETS)
     51 
     52   return 0; /* returns success */
     53 
     54 #elif defined(HAVE_FCNTL_O_NONBLOCK)
     55 
     56   /* most recent unix versions */
     57   int flags;
     58   flags = sfcntl(sockfd, F_GETFL, 0);
     59   if(nonblock)
     60     return sfcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
     61   else
     62     return sfcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK));
     63 
     64 #elif defined(HAVE_IOCTL_FIONBIO)
     65 
     66   /* older unix versions */
     67   int flags = nonblock ? 1 : 0;
     68   return ioctl(sockfd, FIONBIO, &flags);
     69 
     70 #elif defined(HAVE_IOCTLSOCKET_FIONBIO)
     71 
     72   /* Windows */
     73   unsigned long flags = nonblock ? 1UL : 0UL;
     74   return ioctlsocket(sockfd, FIONBIO, &flags);
     75 
     76 #elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO)
     77 
     78   /* Amiga */
     79   long flags = nonblock ? 1L : 0L;
     80   return IoctlSocket(sockfd, FIONBIO, flags);
     81 
     82 #elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK)
     83 
     84   /* BeOS */
     85   long b = nonblock ? 1L : 0L;
     86   return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
     87 
     88 #else
     89 #  error "no non-blocking method was found/used/set"
     90 #endif
     91 }
     92