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/** @file
Implement the read API.
Copyright (c) 2011, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <SocketInternals.h>
/**
Read support routine for sockets
The BslSocketRead routine is called indirectly by the read file
system routine. This routine is typically used for SOCK_STREAM
because it waits for receive data from the target system specified
in the ::connect call.
@param [in] pDescriptor Descriptor address for the file
@param [in] pOffset File offset
@param [in] LengthInBytes Number of bytes to read
@param [in] pBuffer Address of the buffer to receive the data
@return The number of bytes read or -1 if an error occurs.
In the case of an error, ::errno contains more details.
**/
ssize_t
EFIAPI
BslSocketRead (
struct __filedes *pDescriptor,
off_t * pOffset,
size_t LengthInBytes,
void * pBuffer
)
{
ssize_t BytesRead;
//
// Receive the data from the remote system
//
BytesRead = recvfrom ( pDescriptor->MyFD,
pBuffer,
LengthInBytes,
0,
NULL,
NULL );
//
// Return the number of bytes read
//
return BytesRead;
}
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