StdLib/BsdSocketLib/shutdown.c

   1 /** @file
   2   Implement the shutdown 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   Shutdown the socket receive and transmit operations
  20
  21   The ::shutdown routine stops socket receive and transmit operations.
  22   The
  23   <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/shutdown.html">POSIX</a>
  24   documentation is available online.
  25
  26   @param [in] s         Socket file descriptor returned from ::socket.
  27
  28   @param [in] how       Which operations to shutdown
  29
  30   @returns    ::shutdown returns the zero (0) if successful or -1 when an
  31               error occurs.  In the latter case, errno contains more details.
  32
  33  **/
  34 int
  35 shutdown (
  36   int s,
  37   int how
  38   )
  39 {
  40   int RetVal;
  41   EFI_SOCKET_PROTOCOL * pSocketProtocol;
  42   EFI_STATUS Status;
  43
  44   //
  45   //  Assume failure
  46   //
  47   RetVal = -1;
  48
  49   //
  50   //  Locate the context for this socket
  51   //
  52   pSocketProtocol = BslFdToSocketProtocol ( s, NULL, &errno );
  53   if ( NULL != pSocketProtocol ) {
  54     //
  55     //  Receive the data from the socket
  56     //
  57     Status = pSocketProtocol->pfnShutdown ( pSocketProtocol,
  58                                             how,
  59                                             &errno );
  60     if ( !EFI_ERROR ( Status )) {
  61       //
  62       //  Success
  63       //
  64       RetVal = 0;
  65     }
  66   }
  67
  68   //
  69   //  Return the operation status
  70   //
  71   return RetVal;
  72 }