mirror of https://github.com/acidanthera/audk.git
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/** @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
|
|
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;
|
|
}
|