Provided by: linux-doc-2.6.15_2.6.15-23.39_all bug


       sockfd_lookup - Go from a file number to its socket slot


       struct socket * sockfd_lookup  (int fd, int * err);


       fd     file handle

       err    pointer to an error code return


       The  file  handle passed in is locked and the socket it is bound too is
       returned. If an error occurs the err  pointer  is  overwritten  with  a
       negative  errno code and NULL is returned. The function checks for both
       invalid handles and passing a handle which is not a socket.

       On a success the socket object pointer is returned.