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SubjectRe: ext4 features
Krzysztof Halasa wrote:
>
> Pavel Machek <pavel@ucw.cz> writes:
>
> > Why not? You use libextfs or how is it called to read the file from
> > the disk directly (read-only access), then you write it back using
> > regular calls.
> >
> > Of course, you can end up with "deleted" data being corrupted if
> > kernel reused the area before undelete, or while you were doing
> > undelete... but that's expected. They were _deleted_, right?
>
> What if the "undeleted" file contained /etc/shadow because someone
> was changing password at the time? :-)
>

As the undeleter already had read access to the raw device, /etc/shadow
was already compromised.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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