535038c5cc
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@332 42af7a65-404d-4744-a932-0658087f49c3
103 lines
4.0 KiB
C
103 lines
4.0 KiB
C
/****************************************************************************
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* net/getsockopt.c
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*
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* Copyright (C) 2007 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: getsockopt
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*
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* Description:
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* getsockopt() retrieve thse value for the option specified by the
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* 'option' argument for the socket specified by the 'sockfd' argument. If
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* the size of the option value is greater than 'value_len', the value
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* stored in the object pointed to by the 'value' argument will be silently
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* truncated. Otherwise, the length pointed to by the 'value_len' argument
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* will be modified to indicate the actual length of the'value'.
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*
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* The 'level' argument specifies the protocol level of the option. To
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* retrieve options at the socket level, specify the level argument as
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* SOL_SOCKET.
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*
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* See <sys/socket.h> a complete list of values for the 'option' argument.
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*
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* Parameters:
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* sockfd Socket descriptor of socket
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* level Protocol level to set the option
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* option identifies the option to get
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* value Points to the argument value
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* value_len The length of the argument value
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*
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* Returned Value:
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*
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* EBADF
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* The 'sockfd' argument is not a valid socket descriptor.
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* EINVAL
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* The specified option is invalid at the specified socket 'level' or the
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* socket has been shutdown.
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* ENOPROTOOPT
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* The 'option' is not supported by the protocol.
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* ENOTSOCK
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* The 'sockfd' argument does not refer to a socket.
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* ENOBUFS
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* Insufficient resources are available in the system to complete the
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* call.
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*
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* Assumptions:
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*
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****************************************************************************/
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int getsockopt(int sockfd, int level, int option, void *value, socklen_t *value_len)
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{
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*get_errno_ptr() = ENOPROTOOPT;
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return ERROR;
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}
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#endif /* CONFIG_NET */
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