t is binary: this only has any effect under Win32).</p>

<p>BIO_set_fp() sets the fp of a file BIO to <b>fp</b>. <b>flags</b> has the same meaning as in BIO_new_fp(), it is a macro.</p>

<p>BIO_get_fp() retrieves the fp of a file BIO, it is a macro.</p>

<p>BIO_seek() is a macro that sets the position pointer to <b>offset</b> bytes from the start of file.</p>

<p>BIO_tell() returns the value of the position pointer.</p>

<p>BIO_read_filename(), BIO_write_filename(), BIO_append_filename() and BIO_rw_filename