metadata and contents in loop device

metadata and contents in loop device

[Michael Zhu]

Hello, everyone, in my loop device I want to use
different keys to en/decrypt the file contents and the
metadata of directories/file names information. But
how can I differentiate these two types of data in the
loop device? The loop device just cares about the
block. But the metadata of directories/file names
information is just the file system information. Any
idea about this? Thanks in advance.

Michael

______________________________________________________________________ 
Web-hosting solutions for home and business! http://website.yahoo.ca

Re: metadata and contents in loop device

[Alexander Viro]

On Tue, 22 Jan 2002, Michael Zhu wrote:

> Hello, everyone, in my loop device I want to use
> different keys to en/decrypt the file contents and the
> metadata of directories/file names information. But
> how can I differentiate these two types of data in the
> loop device?

You can't.

Re: metadata and contents in loop device

[Lars Marowsky-Bree]

On 2002-01-22T13:02:01,
   Michael Zhu <mylinuxk@yahoo.ca> said:

> Hello, everyone, in my loop device I want to use
> different keys to en/decrypt the file contents and the
> metadata of directories/file names information. But
> how can I differentiate these two types of data in the
> loop device? The loop device just cares about the
> block. But the metadata of directories/file names
> information is just the file system information. Any
> idea about this? Thanks in advance.

You can't.

Not without a special filesystem, which stored both kinds of data on different
block devices. Have fun writing one ;-)

What is the intended use of this?


Sincerely,
    Lars Marowsky-Brée <lmb@suse.de>

-- 
Perfection is our goal, excellence will be tolerated. -- J. Yahl

Re: metadata and contents in loop device

[Xavier Bestel]

On Tue, 2002-01-22 at 19:02, Michael Zhu wrote:
> Hello, everyone, in my loop device I want to use
> different keys to en/decrypt the file contents and the
> metadata of directories/file names information. But
> how can I differentiate these two types of data in the
> loop device? The loop device just cares about the
> block. But the metadata of directories/file names
> information is just the file system information. Any
> idea about this? Thanks in advance.

Mmmh ... I don't really see the point, but perhaps you should look at
stegfs (sorry, don't remember the URL)