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/* getsockopt.c --- wrappers for Windows getsockopt function
Copyright (C) 2008-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Paolo Bonzini */
#include <config.h>
#define WIN32_LEAN_AND_MEAN
/* Get winsock2.h. */
#include <sys/socket.h>
/* Get struct timeval. */
#include <sys/time.h>
/* Get memcpy. */
#include <string.h>
/* Get set_winsock_errno, FD_TO_SOCKET etc. */
#include "w32sock.h"
#undef getsockopt
int
rpl_getsockopt (int fd, int level, int optname, void *optval, socklen_t *optlen)
{
SOCKET sock = FD_TO_SOCKET (fd);
if (sock == INVALID_SOCKET)
{
errno = EBADF;
return -1;
}
else
{
int r;
if (level == SOL_SOCKET
&& (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
{
int milliseconds;
int milliseconds_len = sizeof (int);
size_t n;
r = getsockopt (sock, level, optname, (char *) &milliseconds,
&milliseconds_len);
struct timeval tv = {
.tv_sec = milliseconds / 1000,
.tv_usec = (milliseconds % 1000) * 1000
};
n = sizeof (struct timeval);
if (n > *optlen)
n = *optlen;
memcpy (optval, &tv, n);
*optlen = n;
}
else
{
r = getsockopt (sock, level, optname, optval, optlen);
}
if (r < 0)
set_winsock_errno ();
return r;
}
}
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