From: Joel VanderWerf <vjoel@...>
Date: 2007-09-12T06:26:11+09:00
Subject: Re: File#file_descriptor

Wayne E. Seguin wrote:
> Hopefully someone knows this... I've googled for a while.
> 
> When writing a C extension, how does one access the file descriptor of a 
> File object from the C code?

Take a look at this method in io.c:

static VALUE
rb_io_fileno(io)
     VALUE io;
{
     OpenFile *fptr;
     int fd;

     GetOpenFile(io, fptr);
     fd = fileno(fptr->f);
     return INT2FIX(fd);
}

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407