StdLib/BsdSocketLib/getsockopt.c

   1 /** @file
   2   Implement the getsockopt API.
   3
   4   Copyright (c) 2011, Intel Corporation
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include <SocketInternals.h>
  16
  17
  18 /**
  19   Get the socket options
  20
  21   @param [in] s               Socket file descriptor returned from ::socket.
  22   @param [in] level           Option protocol level
  23   @param [in] option_name     Name of the option
  24   @param [out] option_value   Buffer to receive the option value
  25   @param [in,out] option_len  Length of the buffer in bytes,
  26                               upon return length of the option value in bytes
  27
  28   @retval   Zero (0) upon success
  29   @retval   Minus one (-1) upon failure, errno set with additional error information
  30
  31 **/
  32 int
  33 getsockopt (
  34   IN int s,
  35   IN int level,
  36   IN int option_name,
  37   OUT void * __restrict option_value,
  38   IN OUT socklen_t * __restrict option_len
  39   )
  40 {
  41   int OptionStatus;
  42   EFI_SOCKET_PROTOCOL * pSocketProtocol;
  43   EFI_STATUS Status;
  44
  45   //
  46   //  Locate the context for this socket
  47   //
  48   pSocketProtocol = BslFdToSocketProtocol ( s, NULL, &errno );
  49   if ( NULL != pSocketProtocol ) {
  50     //
  51     //  Get the socket option
  52     //
  53     Status = pSocketProtocol->pfnOptionGet ( pSocketProtocol,
  54                                              level,
  55                                              option_name,
  56                                              option_value,
  57                                              option_len,
  58                                              &errno );
  59   }
  60
  61   //
  62   //  Return the operation stauts
  63   //
  64   OptionStatus = ( 0 == errno ) ? 0 : -1;
  65   return OptionStatus;
  66 }