bb45db5b2e
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1452 42af7a65-404d-4744-a932-0658087f49c3
158 lines
4.7 KiB
C
158 lines
4.7 KiB
C
/****************************************************************************
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* net/bind.c
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*
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* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#ifdef CONFIG_NET
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <errno.h>
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#include "net_internal.h"
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/****************************************************************************
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* Global Functions
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****************************************************************************/
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/****************************************************************************
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* Function: bind
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*
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* Description:
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* bind() gives the socket 'sockfd' the local address 'addr'. 'addr' is
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* 'addrlen' bytes long. Traditionally, this is called “assigning a name to
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* a socket.” When a socket is created with socket, it exists in a name
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* space (address family) but has no name assigned.
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*
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* Parameters:
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* sockfd Socket descriptor from socket
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* addr Socket local address
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* addrlen Length of 'addr'
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*
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* Returned Value:
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* 0 on success; -1 on error with errno set appropriately
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*
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* EACCES
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* The address is protected, and the user is not the superuser.
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* EADDRINUSE
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* The given address is already in use.
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* EBADF
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* sockfd is not a valid descriptor.
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* EINVAL
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* The socket is already bound to an address.
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* ENOTSOCK
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* sockfd is a descriptor for a file, not a socket.
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*
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* Assumptions:
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*
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****************************************************************************/
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int bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen)
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{
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FAR struct socket *psock = sockfd_socket(sockfd);
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#if defined(CONFIG_NET_TCP) || defined(CONFIG_NET_UDP)
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#ifdef CONFIG_NET_IPv6
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FAR const struct sockaddr_in6 *inaddr = (const struct sockaddr_in6 *)addr;
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#else
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FAR const struct sockaddr_in *inaddr = (const struct sockaddr_in *)addr;
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#endif
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#endif
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int err;
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int ret;
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/* Verify that the sockfd corresponds to valid, allocated socket */
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if (!psock || psock->s_crefs <= 0)
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{
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err = EBADF;
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goto errout;
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}
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/* Verify that a valid address has been provided */
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#ifdef CONFIG_NET_IPv6
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if (addr->sa_family != AF_INET6 || addrlen < sizeof(struct sockaddr_in6))
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#else
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if (addr->sa_family != AF_INET || addrlen < sizeof(struct sockaddr_in))
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#endif
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{
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err = EBADF;
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goto errout;
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}
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/* Perform the binding depending on the protocol type */
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switch (psock->s_type)
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{
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#ifdef CONFIG_NET_TCP
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case SOCK_STREAM:
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ret = uip_tcpbind(psock->s_conn, inaddr);
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psock->s_flags |= _SF_BOUND;
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break;
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#endif
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#ifdef CONFIG_NET_UDP
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case SOCK_DGRAM:
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ret = uip_udpbind(psock->s_conn, inaddr);
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break;
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#endif
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default:
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err = EBADF;
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goto errout;
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}
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/* Was the bind successful */
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if (ret < 0)
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{
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err = -ret;
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goto errout;
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}
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return OK;
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errout:
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*get_errno_ptr() = err;
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return ERROR;
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}
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#endif /* CONFIG_NET */
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