90 lines
3.2 KiB
C
90 lines
3.2 KiB
C
/****************************************************************************
|
|
* libc/net/lib_recvmsg.c
|
|
*
|
|
* Copyright (C) 2007, 2008, 2012, 2008 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#ifdef CONFIG_NET
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <errno.h>
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: recvmsg
|
|
*
|
|
* Description:
|
|
* The recvmsg() call is identical to recvfrom() with a NULL from parameter.
|
|
*
|
|
* Parameters:
|
|
* sockfd Socket descriptor of socket
|
|
* buf Buffer to receive data
|
|
* len Length of buffer
|
|
* flags Receive flags
|
|
*
|
|
* Returned Value:
|
|
* (see recvfrom)
|
|
*
|
|
* Assumptions:
|
|
*
|
|
****************************************************************************/
|
|
|
|
ssize_t recvmsg(int sockfd, FAR struct msghdr *msg, int flags)
|
|
{
|
|
FAR void *buf = msg->msg_iov->iov_base;
|
|
FAR struct sockaddr *from = msg->msg_name;
|
|
FAR socklen_t *fromlen = (FAR socklen_t *)&msg->msg_namelen;
|
|
size_t len = msg->msg_iov->iov_len;
|
|
|
|
if (msg->msg_iovlen == 1)
|
|
{
|
|
return recvfrom(sockfd, buf, len, flags, from, fromlen);
|
|
}
|
|
else
|
|
{
|
|
set_errno(ENOTSUP);
|
|
return ERROR;
|
|
}
|
|
}
|
|
|
|
#endif /* CONFIG_NET */
|