ftype

/*
 *  call-seq:
 *     File.ftype(file_name)   => string
 *  
 *  Identifies the type of the named file; the return string is one of
 *  ``<code>file</code>'', ``<code>directory</code>'',
 *  ``<code>characterSpecial</code>'', ``<code>blockSpecial</code>'',
 *  ``<code>fifo</code>'', ``<code>link</code>'',
 *  ``<code>socket</code>'', or ``<code>unknown</code>''.
 *     
 *     File.ftype("testfile")            #=> "file"
 *     File.ftype("/dev/tty")            #=> "characterSpecial"
 *     File.ftype("/tmp/.X11-unix/X0")   #=> "socket"
 */

static VALUE
rb_file_s_ftype(klass, fname)
    VALUE klass, fname;
{
    struct stat st;

    SafeStringValue(fname);
    if (lstat(StringValueCStr(fname), &st) == -1) {
        rb_sys_fail(RSTRING(fname)->ptr);
    }

    return rb_file_ftype(&st);
}