130 lines
4.5 KiB
C
130 lines
4.5 KiB
C
/****************************************************************************
|
|
* net/socket/net_clone.c
|
|
*
|
|
* Copyright (C) 2009, 2011-2015 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/socket.h>
|
|
#include <errno.h>
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/arch.h>
|
|
#include <nuttx/net/net.h>
|
|
#include <nuttx/net/udp.h>
|
|
|
|
#include "tcp/tcp.h"
|
|
#include "udp/udp.h"
|
|
#include "socket/socket.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: net_clone
|
|
*
|
|
* Description:
|
|
* Performs the low level, common portion of net_dupsd() and net_dupsd2()
|
|
*
|
|
****************************************************************************/
|
|
|
|
int net_clone(FAR struct socket *psock1, FAR struct socket *psock2)
|
|
{
|
|
net_lock_t flags;
|
|
int ret = OK;
|
|
|
|
/* Parts of this operation need to be atomic */
|
|
|
|
flags = net_lock();
|
|
|
|
/* Duplicate the socket state */
|
|
|
|
psock2->s_domain = psock1->s_domain; /* IP domain: PF_INET, PF_INET6, or PF_PACKET */
|
|
psock2->s_type = psock1->s_type; /* Protocol type: Only SOCK_STREAM or SOCK_DGRAM */
|
|
psock2->s_flags = psock1->s_flags; /* See _SF_* definitions */
|
|
#ifdef CONFIG_NET_SOCKOPTS
|
|
psock2->s_options = psock1->s_options; /* Selected socket options */
|
|
psock2->s_rcvtimeo = psock1->s_rcvtimeo; /* Receive timeout value (in deciseconds) */
|
|
psock2->s_sndtimeo = psock1->s_sndtimeo; /* Send timeout value (in deciseconds) */
|
|
#ifdef CONFIG_NET_SOLINGER
|
|
psock2->s_linger = psock1->s_linger; /* Linger timeout value (in deciseconds) */
|
|
#endif
|
|
#endif
|
|
psock2->s_conn = psock1->s_conn; /* UDP or TCP connection structure */
|
|
#ifdef CONFIG_NET_TCP_WRITE_BUFFERS
|
|
psock2->s_sndcb = NULL; /* Force allocation of new callback
|
|
* instance for TCP send */
|
|
#endif
|
|
|
|
/* Increment the reference count on the connection */
|
|
|
|
DEBUGASSERT(psock2->s_conn);
|
|
psock2->s_crefs = 1; /* One reference on the new socket itself */
|
|
|
|
#ifdef CONFIG_NET_TCP
|
|
if (psock2->s_type == SOCK_STREAM)
|
|
{
|
|
FAR struct tcp_conn_s *conn = psock2->s_conn;
|
|
DEBUGASSERT(conn->crefs > 0 && conn->crefs < 255);
|
|
conn->crefs++;
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef CONFIG_NET_UDP
|
|
if (psock2->s_type == SOCK_DGRAM)
|
|
{
|
|
FAR struct udp_conn_s *conn = psock2->s_conn;
|
|
DEBUGASSERT(conn->crefs > 0 && conn->crefs < 255);
|
|
conn->crefs++;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
ndbg("Unsupported type: %d\n", psock2->s_type);
|
|
ret = -EBADF;
|
|
}
|
|
|
|
net_unlock(flags);
|
|
return ret;
|
|
}
|
|
|
|
#endif /* CONFIG_NET */
|
|
|
|
|