quickjs-tart

quickjs-based runtime for wallet-core logic
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nonblock.c (2689B)

      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) Daniel Stenberg, <daniel@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 https://curl.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  * SPDX-License-Identifier: curl
     22  *
     23  ***************************************************************************/
     24 
     25 #include "../curl_setup.h"
     26 
     27 #ifdef HAVE_SYS_IOCTL_H
     28 #include <sys/ioctl.h>
     29 #endif
     30 #ifdef HAVE_FCNTL_H
     31 #include <fcntl.h>
     32 #endif
     33 
     34 #ifdef __VMS
     35 #include <in.h>
     36 #include <inet.h>
     37 #endif
     38 
     39 #include "nonblock.h"
     40 
     41 /*
     42  * curlx_nonblock() set the given socket to either blocking or non-blocking
     43  * mode based on the 'nonblock' boolean argument. This function is highly
     44  * portable.
     45  */
     46 int curlx_nonblock(curl_socket_t sockfd,    /* operate on this */
     47                    int nonblock   /* TRUE or FALSE */)
     48 {
     49 #if defined(HAVE_FCNTL_O_NONBLOCK)
     50   /* most recent Unix versions */
     51   int flags;
     52   flags = sfcntl(sockfd, F_GETFL, 0);
     53   if(flags < 0)
     54     return -1;
     55   /* Check if the current file status flags have already satisfied
     56    * the request, if so, it is no need to call fcntl() to replicate it.
     57    */
     58   if(!!(flags & O_NONBLOCK) == !!nonblock)
     59     return 0;
     60   if(nonblock)
     61     flags |= O_NONBLOCK;
     62   else
     63     flags &= ~O_NONBLOCK;
     64   return sfcntl(sockfd, F_SETFL, flags);
     65 
     66 #elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO)
     67 
     68   /* Amiga */
     69   long flags = nonblock ? 1L : 0L;
     70   return IoctlSocket(sockfd, FIONBIO, (char *)&flags);
     71 
     72 #elif defined(HAVE_IOCTL_FIONBIO)
     73 
     74   /* older Unix versions */
     75   int flags = nonblock ? 1 : 0;
     76   return ioctl(sockfd, FIONBIO, &flags);
     77 
     78 #elif defined(HAVE_IOCTLSOCKET_FIONBIO)
     79 
     80   /* Windows */
     81   unsigned long flags = nonblock ? 1UL : 0UL;
     82   return ioctlsocket(sockfd, (long)FIONBIO, &flags);
     83 
     84 #elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK)
     85 
     86   /* Orbis OS */
     87   long b = nonblock ? 1L : 0L;
     88   return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
     89 
     90 #else
     91 #  error "no non-blocking method was found/used/set"
     92 #endif
     93 }