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/** @file
Implement the listen 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>
/**
Establish the known port to listen for network connections.
The listen routine places the port into a state that enables connection
attempts. Connections are placed into FIFO order in a queue to be serviced
by the application. The application calls the ::accept routine to remove
the next connection from the queue and get the associated socket.
The
<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/listen.html">POSIX</a>
documentation is available online.
@param [in] s Socket file descriptor returned from ::socket.
@param [in] backlog backlog specifies the maximum FIFO depth for the connections
waiting for the application to call ::accept. Connection attempts
received while the queue is full are refused.
@return This routine returns zero (0) if successful or -1 when an error occurs.
In the case of an error, ::errno contains more details.
**/
int
listen (
IN int s,
IN int backlog
)
{
int ListenStatus;
EFI_SOCKET_PROTOCOL * pSocketProtocol;
EFI_STATUS Status;
//
// Locate the context for this socket
//
pSocketProtocol = BslFdToSocketProtocol ( s, NULL, &errno );
if ( NULL != pSocketProtocol ) {
//
// Enable connections on the known port
//
Status = pSocketProtocol->pfnListen ( pSocketProtocol,
backlog,
&errno );
}
//
// Return the operation stauts
//
ListenStatus = ( 0 == errno ) ? 0 : -1;
return ListenStatus;
}
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