FILEIO_NONE, /* open without any access (invalid mode) */
FILEIO_READ, /* open for reading, position at beginning */
FILEIO_WRITE, /* open for writing, position at beginning */
FILEIO_NONE, /* open without any access (invalid mode) */
FILEIO_READ, /* open for reading, position at beginning */
FILEIO_WRITE, /* open for writing, position at beginning */