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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "curl_setup.h"
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef __VMS
#include <in.h>
#include <inet.h>
#endif
#include "nonblock.h"
/*
* curlx_nonblock() set the given socket to either blocking or non-blocking
* mode based on the 'nonblock' boolean argument. This function is highly
* portable.
*/
int curlx_nonblock(curl_socket_t sockfd, /* operate on this */
int nonblock /* TRUE or FALSE */)
{
#if defined(HAVE_FCNTL_O_NONBLOCK)
/* most recent Unix versions */
int flags;
flags = sfcntl(sockfd, F_GETFL, 0);
if(flags < 0)
return -1;
/* Check if the current file status flags have already satisfied
* the request, if so, it is no need to call fcntl() to replicate it.
*/
if(!!(flags & O_NONBLOCK) == !!nonblock)
return 0;
if(nonblock)
flags |= O_NONBLOCK;
else
flags &= ~O_NONBLOCK;
return sfcntl(sockfd, F_SETFL, flags);
#elif defined(HAVE_IOCTL_FIONBIO)
/* older Unix versions */
int flags = nonblock ? 1 : 0;
return ioctl(sockfd, FIONBIO, &flags);
#elif defined(HAVE_IOCTLSOCKET_FIONBIO)
/* Windows */
unsigned long flags = nonblock ? 1UL : 0UL;
return ioctlsocket(sockfd, (long)FIONBIO, &flags);
#elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO)
/* Amiga */
long flags = nonblock ? 1L : 0L;
return IoctlSocket(sockfd, FIONBIO, (char *)&flags);
#elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK)
/* Orbis OS */
long b = nonblock ? 1L : 0L;
return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
#else
# error "no non-blocking method was found/used/set"
#endif
}
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