Hi, As per your suggestion, if I write a file with zero bits, it would remap to other pages, and I might not zero the real pages. So is there any other way that I can access the pages that a file is using? On 7/9/06, Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:
On Sat, 2006-07-08 at 18:56 -0700, Avinash Ramanath wrote: > I am trying to zero data blocks whenever an unlink is invoked as part > of a secure delete filesystem. [ Hi, just a question... how secure do you want to be? (just asking because zeros might not be the best pattern when protecting against government type use :)
I would be using zeroes multiple times followed by random bit patterns.
> I tried to zero the file by writing a buffer (of file size) with > zeroes onto the file. that's not so nice since there is no guarantee that the filesystem or the disk won't remap the data blocks underneath you...
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