1 /*****************************************************************************
2 * sendmsg.c: POSIX sendmsg() replacement
3 *****************************************************************************
4 * Copyright © 2016 Rémi Denis-Courmont
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU Lesser General Public License as published by
8 * the Free Software Foundation; either version 2.1 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
19 *****************************************************************************/
30 ssize_t
sendmsg(int fd
, const struct msghdr
*msg
, int flags
)
32 if (msg
->msg_controllen
!= 0)
38 if (msg
->msg_iovlen
> IOV_MAX
)
44 WSABUF
*buf
= malloc(msg
->msg_iovlen
* sizeof (*buf
));
48 for (unsigned i
= 0; i
< msg
->msg_iovlen
; i
++)
50 buf
[i
].len
= msg
->msg_iov
[i
].iov_len
;
51 buf
[i
].buf
= (void *)msg
->msg_iov
[i
].iov_base
;
56 int ret
= WSASendTo(fd
, buf
, msg
->msg_iovlen
, &sent
, flags
,
57 msg
->msg_name
, msg
->msg_namelen
, NULL
, NULL
);
63 switch (WSAGetLastError())