Wrapper File System

Wrapper File System

[UZAIR LAKHANI]

Hello All,

I have to inquire how one can write a Wrapper file
system (fs) i.e. a fs that has under it a complete fs
and this wrapper fs only calls the functions of that
actual underlying fs.

The work I am doing this is through using path_lookup
function and getting the mount point dentry and super
block information.

I want to know what things I should know for writing
such a fs.

Uzair Lakhani


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Re: Wrapper File System

[Avishay Traeger]

On Sun, 2006-02-05 at 10:04 -0800, UZAIR LAKHANI wrote:
> I have to inquire how one can write a Wrapper file
> system (fs) i.e. a fs that has under it a complete fs
> and this wrapper fs only calls the functions of that
> actual underlying fs.

Something like wrapfs: http://www.filesystems.org/ ?


Avishay Traeger
http://www.fsl.cs.sunysb.edu/~avishay/

Re: Wrapper File System

[Michael Thompson]

On 2/5/06, UZAIR LAKHANI <uzairr_bs1b@yahoo.com> wrote:
> Hello All,
>
> I have to inquire how one can write a Wrapper file
> system (fs) i.e. a fs that has under it a complete fs
> and this wrapper fs only calls the functions of that
> actual underlying fs.

Also known as a stacked filesystem (as one is stacked on another).

eCryptfs is one such filesytem, and it is modeled off of work done by
Erez Zadok, if I can find my links to his work, I'll post them, but
you can always google him for more information.

--
Michael C. Thompson <mcthomps@us.ibm.com>
Software-Engineer, IBM LTC Security