Add Socket Libraries.
Add Posix functions for porting compatibility. Fix compliance issues with ISO/IEC 9899:199409 New Functions: setenv(), fparseln(), GetFileNameFromPath(), rename(), realpath(), setprogname(), getprogname(), strlcat(), strlcpy(), strsep(), setitimer(), getitimer(), timegm(), getopt(), basename(), mkstemp(), ffs(), vsnprintf(), snprintf(), getpass(), usleep(), select(), writev(), strcasecmp(), getcwd(), chdir(), tcgetpgrp(), getpgrp(), gettimeofday(), bcopy(), git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12061 6f19259b-4bc3-4df7-8a09-765794883524
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darylm503
286
StdLib/BsdSocketLib/socket.c
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286
StdLib/BsdSocketLib/socket.c
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/** @file
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Implement the socket 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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const struct fileops SocketOperations = {
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BslSocketClose, // close
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BslSocketRead, // read
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BslSocketWrite, // write
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//
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// Not supported
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//
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fnullop_fcntl, // fcntl
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BslSocketPoll, // poll
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fnullop_flush, // flush
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fbadop_stat, // stat
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fbadop_ioctl, // ioctl
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fbadop_delete, // delete
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fbadop_rmdir, // rmdir
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fbadop_mkdir, // mkdir
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fbadop_rename, // rename
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NULL // lseek
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};
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/**
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Translate from the socket file descriptor to the socket protocol.
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@param [in] s Socket file descriptor returned from ::socket.
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@param [in] ppDescriptor Address to receive the descriptor structure
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address for the file
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@param [in] pErrno Address of the errno variable
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@returns A pointer to the socket protocol structure or NULL if
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an invalid file descriptor was passed in.
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**/
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EFI_SOCKET_PROTOCOL *
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BslFdToSocketProtocol (
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int s,
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struct __filedes ** ppDescriptor,
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int * pErrno
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)
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{
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struct __filedes * pDescriptor;
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EFI_SOCKET_PROTOCOL * pSocketProtocol;
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//
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// Assume failure
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//
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pSocketProtocol = NULL;
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//
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// Validate the file descriptor
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//
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if ( !ValidateFD ( s, TRUE )) {
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//
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// Bad file descriptor
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//
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*pErrno = EBADF;
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}
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else {
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//
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// Get the descriptor for the file
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//
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pDescriptor = &gMD->fdarray [ s ];
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//
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// Validate that the descriptor is associated with sockets
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//
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pSocketProtocol = BslValidateSocketFd ( pDescriptor, pErrno );
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if (( NULL != ppDescriptor ) && ( NULL != pSocketProtocol )) {
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*ppDescriptor = pDescriptor;
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}
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}
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//
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// Return the socket protocol
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//
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return pSocketProtocol;
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}
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/**
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Build a file descriptor for a socket.
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@param [in] pSocketProtocol Socket protocol structure address
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@param [in] pErrno Address of the errno variable
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@returns The file descriptor for the socket or -1 if an error occurs.
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**/
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int
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BslSocketProtocolToFd (
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IN EFI_SOCKET_PROTOCOL * pSocketProtocol,
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IN int * pErrno
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)
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{
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int FileDescriptor;
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struct __filedes * pDescriptor;
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//
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// Assume failure
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//
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FileDescriptor = -1;
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//
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// Locate a file descriptor
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//
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FileDescriptor = FindFreeFD ( VALID_CLOSED );
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if( FileDescriptor < 0 ) {
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//
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// All available FDs are in use
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//
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errno = EMFILE;
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}
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else {
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//
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// Initialize the file descriptor
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//
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pDescriptor = &gMD->fdarray [ FileDescriptor ];
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pDescriptor->f_offset = 0;
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pDescriptor->f_flag = 0;
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pDescriptor->f_iflags = DTYPE_SOCKET;
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pDescriptor->MyFD = (UINT16)FileDescriptor;
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pDescriptor->Oflags = 0;
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pDescriptor->Omode = S_ACC_READ | S_ACC_WRITE;
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pDescriptor->RefCount = 1;
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FILE_SET_MATURE ( pDescriptor );
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//
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// Socket specific file descriptor initialization
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//
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pDescriptor->devdata = pSocketProtocol;
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pDescriptor->f_ops = &SocketOperations;
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}
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//
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// Return the socket's file descriptor
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//
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return FileDescriptor;
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}
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/**
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Creates an endpoint for network communication.
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The ::Socket routine initializes the communication endpoint by providing
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the support for the socket library function ::socket. The
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<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/socket.html">POSIX</a>
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documentation for the socket routine is available online for reference.
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@param [in] domain Select the family of protocols for the client or server
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application.
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@param [in] type Specifies how to make the network connection. The following values
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are supported:
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<ul>
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<li>
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SOCK_STREAM - Connect to TCP, provides a byte stream
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that is manipluated by read, recv, send and write.
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</li>
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<li>
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SOCK_SEQPACKET - Connect to TCP, provides sequenced packet stream
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that is manipulated by read, recv, send and write.
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</li>
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<li>
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SOCK_DGRAM - Connect to UDP, provides a datagram service that is
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manipulated by recvfrom and sendto.
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</li>
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</ul>
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@param [in] protocol Specifies the lower layer protocol to use. The following
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values are supported:
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<ul>
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<li>IPPROTO_TCP</li> - This value must be combined with SOCK_STREAM.</li>
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<li>IPPROTO_UDP</li> - This value must be combined with SOCK_DGRAM.</li>
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</ul>
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@returns This routine returns a file descriptor for the socket.
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**/
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INT32
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socket (
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IN INT32 domain,
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IN INT32 type,
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IN INT32 protocol
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)
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{
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INT32 FileDescriptor;
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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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FileDescriptor = -1;
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//
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// Locate the socket protocol
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//
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errno = EslServiceGetProtocol ( &pSocketProtocol );
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if ( 0 == errno ) {
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//
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// Initialize the socket
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//
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Status = pSocketProtocol->pfnSocket ( pSocketProtocol,
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domain,
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type,
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protocol,
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&errno );
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if ( !EFI_ERROR ( Status ))
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{
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//
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// Build the file descriptor for the socket
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//
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FileDescriptor = BslSocketProtocolToFd ( pSocketProtocol,
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&errno );
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}
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}
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//
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// Return the socket's file descriptor
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//
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return FileDescriptor;
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}
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/**
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Validate the socket's file descriptor
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@param [in] pDescriptor Descriptor for the file
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@param [in] pErrno Address of the errno variable
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@returns A pointer to the socket protocol structure or NULL if
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an invalid file descriptor was passed in.
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**/
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EFI_SOCKET_PROTOCOL *
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BslValidateSocketFd (
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struct __filedes * pDescriptor,
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int * pErrno
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)
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{
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EFI_SOCKET_PROTOCOL * pSocketProtocol;
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//
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// Assume failure
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//
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*pErrno = ENOTSOCK;
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pSocketProtocol = NULL;
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//
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// Validate that the descriptor is associated with sockets
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//
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if ( DTYPE_SOCKET == ( pDescriptor->f_iflags & DTYPE_MASK )) {
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//
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// Locate the socket protocol
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//
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pSocketProtocol = pDescriptor->devdata;
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*pErrno = 0;
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}
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//
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// Return the socket protocol
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//
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return pSocketProtocol;
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}
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