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Annotation of embedaddon/curl/lib/nonblock.c, revision 1.1

1.1     ! misho       1: /***************************************************************************
        !             2:  *                                  _   _ ____  _
        !             3:  *  Project                     ___| | | |  _ \| |
        !             4:  *                             / __| | | | |_) | |
        !             5:  *                            | (__| |_| |  _ <| |___
        !             6:  *                             \___|\___/|_| \_\_____|
        !             7:  *
        !             8:  * Copyright (C) 1998 - 2019, 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.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:   (void)sockfd;
        !            52:   (void)nonblock;
        !            53:   return 0; /* returns success */
        !            54: 
        !            55: #elif defined(HAVE_FCNTL_O_NONBLOCK)
        !            56: 
        !            57:   /* most recent unix versions */
        !            58:   int flags;
        !            59:   flags = sfcntl(sockfd, F_GETFL, 0);
        !            60:   if(nonblock)
        !            61:     return sfcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
        !            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, (char *)&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: }