3e2b840565
When using WinSock, a socket is not a file descriptor and does not interoperate with read()/write(). File descriptors do not work with send()/recv(). However, for net_read() and net_write(), we don't know whether we are dealing with a socket or a file descriptor. So try one, and if it fails, try the other. This is an ugly hack until we clean up the users of this API so it doesn't use sockets and fds interchangably.
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/*
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* Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <config.h>
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#include "roken.h"
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/*
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* Like write but never return partial data.
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*/
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#ifndef _WIN32
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ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
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net_write (rk_socket_t fd, const void *buf, size_t nbytes)
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{
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const char *cbuf = (const char *)buf;
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ssize_t count;
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size_t rem = nbytes;
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while (rem > 0) {
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count = write (fd, cbuf, rem);
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if (count < 0) {
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if (errno == EINTR)
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continue;
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else
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return count;
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}
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cbuf += count;
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rem -= count;
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}
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return nbytes;
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}
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#else
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ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
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net_write(rk_socket_t sock, const void *buf, size_t nbytes)
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{
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const char *cbuf = (const char *)buf;
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ssize_t count;
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size_t rem = nbytes;
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#ifdef SOCKET_IS_NOT_AN_FD
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int use_write = 0;
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#endif
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while (rem > 0) {
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#ifdef SOCKET_IS_NOT_AN_FD
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if (use_write)
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count = _write (sock, cbuf, rem);
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else
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count = send (sock, cbuf, rem, 0);
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if (use_write == 0 &&
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rk_IS_SOCKET_ERROR(count) &&
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rk_SOCK_ERRNO == WSAENOTSOCK) {
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use_write = 1;
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count = _write (sock, cbuf, rem);
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}
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#else
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count = send (sock, cbuf, rem, 0);
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#endif
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if (count < 0) {
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if (errno == EINTR)
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continue;
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else
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return count;
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}
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cbuf += count;
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rem -= count;
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}
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return nbytes;
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}
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#endif
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