[PATCH 2.6.11.4 1/1] fs: new filesystem implementation VXEXT1.0

Jens Langner
2005-03-17T15:16:42Z

Hi,

The following URL is link to a large patch for a possible integration of
a new filesystem implementation in the misc section of the kernel tree.
It features a reverse engineered implementation of the so called
VXEXT1.0 DOS filesystem which is commonly used on VxWorks RTOS systems
from Wind River Inc., where the "extended DOS filesystem" mode is enabled.

The VXEXT filesystem is more or less a FAT16 based filesystem which was
slightly modified by Wind River to allow the storage of more than 2GB
data on a partition, as well as storing filenames with a maximum of 40
characters length. To achieve that, VxWorks uses a dynamic cluster size
calculation which is based on the partition size where clusters can be
larger than 32K. In addition, it uses a slightly modified directroy
entry structure to allow to store filenames larger than 8+3 characters.

Please find the patch file accessible through the following URL:
http://www.jens-langner.de/vxext_fs/vxext_fs_1_0-linux-2.6.11.4.patch

In addition, refer the detailed technical documentation on my
implementation and the root directory of my distribution as well:
http://www.jens-langner.de/vxext_fs/Documentation/vxext.txt
http://www.jens-langner.de/vxext_fs/

Please note that large portions of the implementation are based on the
already existing FAT16 (msdos) implementation in the kernel tree.
However, instead of patching/drilling the original FAT16 implementation,
an "outsourced" rework for developing the VEXT implementation was
considered.