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aeb22f4861
This is a followup to edfca3b7e5, which
added the 'posix_spawnp' module but not 'posix_spawn'.
* m4/gnulib-cache.m4: Add 'posix_spawn' module.
* gnulib-local/m4/clock_time.m4.diff: Adjust.
* configure.ac: Move 'gl_EARLY' use right after 'AC_PROG_CC'.
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/* recvfrom.c --- wrappers for Windows recvfrom function
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Copyright (C) 2008-2023 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Paolo Bonzini */
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#include <config.h>
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#define WIN32_LEAN_AND_MEAN
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/* Get winsock2.h. */
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#include <sys/socket.h>
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/* Get set_winsock_errno, FD_TO_SOCKET etc. */
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#include "w32sock.h"
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#undef recvfrom
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ssize_t
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rpl_recvfrom (int fd, void *buf, size_t len, int flags, struct sockaddr *from,
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socklen_t *fromlen)
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{
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SOCKET sock = FD_TO_SOCKET (fd);
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if (sock == INVALID_SOCKET)
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{
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errno = EBADF;
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return -1;
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}
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else
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{
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int frombufsize = (from != NULL ? *fromlen : 0);
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int r = recvfrom (sock, buf, len, flags, from, fromlen);
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if (r < 0)
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set_winsock_errno ();
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/* Winsock recvfrom() only returns a valid 'from' when the socket is
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connectionless. POSIX gives a valid 'from' for all types of
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sockets. */
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else if (from != NULL && *fromlen == frombufsize)
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rpl_getpeername (fd, from, fromlen);
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return r;
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}
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}
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