Re: grub-probe detects ext4 wronly as ext2

[Isaac Dupree]

Robert Millan wrote:
> A more elegant solution (also may be interesting for security at some point)
> would be for update-grub to hash each file it generates access commands for
> and embed the sum in grub.cfg as a check parameter, like
>
>   if verify_hash /file xxxxx ; then
>     do_something_with_file /file
>   fi
>
> So, if we take for granted those two things:
>
>   - That GRUB should never crash no matter what you feed to it.
>   - That update-grub instructs GRUB to verify file consistency via hashing.

also?,
    - That whenever someone wants to boot a new kernel (or whatever), 
they re-run update-grub.  Which definitely doesn't apply if they're 
interactively poking around with the GRUB commandline.  But it could be 
a safety check for some cases.

Would it ever make sense to *ask* the user whether to proceed, if the 
file is different? (they might have changed the file deliberately!) 
But, with that code you mentioned for grub.cfg, I suppose it can be 
adjusted to do that, if desired by whoever controls grub.cfg.

-Isaac