Converting a file descriptor to an istream or ostream (with g++-4.5) [ non-portable method ]

fdToStream.cpp

#include <iostream>
#include <ext/stdio_filebuf.h>

using __gnu_cxx::stdio_filebuf;
using std::istream;
using std::ostream;

inline stdio_filebuf<char> * fileBufFromFD (int fd, std::_Ios_Openmode mode)
{
  return (new stdio_filebuf<char> (fd, mode));
}

istream * createInStreamFromFD (int fd) 
{
  stdio_filebuf<char> * fileBuf = fileBufFromFD (fd, std::ios::in);
  return (new istream (fileBuf)); 
}

ostream * createOutStreamFromFD (int fd) 
{
  stdio_filebuf<char> * fileBuf = fileBufFromFD (fd, std::ios::out);
  return  (new ostream (fileBuf));
}