a88c31639b
* Passes conformance and functional tests. * Builds with GCC 4.4 compiler. Signed-off by: lpleahy git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12497 6f19259b-4bc3-4df7-8a09-765794883524
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
/** @file
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Implement the sendto API.
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Copyright (c) 2011, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <SocketInternals.h>
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/**
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Send data using a network connection.
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The sendto routine queues data to the network for transmission.
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This routine is typically used for SOCK_DGRAM sockets that are shared
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between multiple machine where it is required to specify the target
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system address when sending the data.
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The
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<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/send.html">POSIX</a>
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documentation is available online.
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@param [in] s Socket file descriptor returned from ::socket.
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@param [in] buffer Address of a buffer containing the data to send.
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@param [in] length Length of the buffer in bytes.
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@param [in] flags Message control flags
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@param [in] to Remote system address
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@param [in] tolen Length of remote system address structure
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@return This routine returns the number of data bytes that were
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sent and -1 when an error occurs. In the case of
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an error, ::errno contains more details.
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**/
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ssize_t
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sendto (
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int s,
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const void * buffer,
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size_t length,
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int flags,
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const struct sockaddr * to,
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socklen_t tolen
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)
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{
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BOOLEAN bBlocking;
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ssize_t LengthInBytes;
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CONST UINT8 * pData;
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struct __filedes * pDescriptor;
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EFI_SOCKET_PROTOCOL * pSocketProtocol;
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EFI_STATUS Status;
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//
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// Assume failure
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//
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LengthInBytes = -1;
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//
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// Locate the context for this socket
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//
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pSocketProtocol = BslFdToSocketProtocol ( s,
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&pDescriptor,
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&errno );
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if ( NULL != pSocketProtocol ) {
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//
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// Determine if the operation is blocking
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//
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bBlocking = (BOOLEAN)( 0 == ( pDescriptor->Oflags & O_NONBLOCK ));
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//
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// Send the data using the socket
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//
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pData = buffer;
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do {
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errno = 0;
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Status = pSocketProtocol->pfnTransmit ( pSocketProtocol,
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flags,
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length,
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pData,
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(size_t *)&LengthInBytes,
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to,
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tolen,
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&errno );
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if ( EFI_ERROR ( Status ) && ( EFI_NOT_READY != Status )) {
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LengthInBytes = -1;
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break;
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}
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//
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// Account for the data sent
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//
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pData += LengthInBytes;
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length -= LengthInBytes;
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} while (( 0 != length ) && ( EFI_NOT_READY == Status ) && bBlocking );
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}
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//
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// Return the number of data bytes sent, -1 for errors
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//
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return (INT32)LengthInBytes;
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}
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