Re: Intercepting memory mapped files

[Saket Sinha <saket.sinha89@xxxxxxxxx>]

HI,

Kindly refer the following link that implements a minimal encryption over wrapfs.

https://github.com/piekill/wrapfs

Go through the wrapfs_encrypt in wrapfs_readpage and wrapfs_decrypt in wrapfs_writepage.

Regards,

Saket Sinha

On Fri, Jan 30, 2015 at 3:56 PM, Kunal Baweja <bawejakunal15@xxxxxxxxx> wrote:

Hi,

I am currently working on implementing a simple encrypted file system using a stackable file system WrapFS. In order to do so, as I read in the WrapFS mailing list one needs to implement address space operations, which I have done and posted on my github at this link and it works fine. But now when I am trying to modify the data before being written in wrapfs_lower() function I get a blank output in files written out.

Please guide where am I going wrong in modifying the data to be written and what could be the best way to decrypt it ?

Thanks

Kunal Baweja

Undergraduate B.E. (Hons.) Computer Science

Birla Institute Of Technology & Science, Pilani

K.K. Birla Goa Campus

+91 9049655665

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