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/** @file
Implement the send 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>
/**
Send data using a network connection.
The ::send routine queues data to the network for transmission.
The
<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/send.html">POSIX</a>
documentation is available online.
@param [in] s Socket file descriptor returned from ::socket.
@param [in] buffer Address of a buffer containing the data to send.
@param [in] length Length of the buffer in bytes.
@param [in] flags Message control flags
@returns ::send returns the number of data bytes that were
sent and -1 when an error occurs. In the case of
an error, errno contains more details.
**/
ssize_t
send (
int s,
CONST void * buffer,
size_t length,
int flags
)
{
ssize_t LengthInBytes;
CONST UINT8 * pData;
struct __filedes * pDescriptor;
EFI_SOCKET_PROTOCOL * pSocketProtocol;
EFI_STATUS Status;
//
// Assume failure
//
LengthInBytes = -1;
//
// Locate the context for this socket
//
pSocketProtocol = BslFdToSocketProtocol ( s,
&pDescriptor,
&errno );
if ( NULL != pSocketProtocol ) {
//
// Send the data using the socket
//
pData = buffer;
do {
errno = 0;
Status = pSocketProtocol->pfnSend ( pSocketProtocol,
flags,
length,
pData,
(size_t *)&LengthInBytes,
NULL,
0,
&errno );
if ( EFI_ERROR ( Status )) {
LengthInBytes = -1;
break;
}
//
// Account for the data sent
//
pData += LengthInBytes;
length -= LengthInBytes;
// TODO: Add non-blocking check
} while (( 0 != length ) && ( EFI_NOT_READY == Status ));
}
//
// Return the number of data bytes sent, -1 for errors
//
return (INT32)LengthInBytes;
}
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