Peter Jones 7b35014c77
efi: Make efivarfs entries immutable by default ...
commit ed8b0de5a33d2a2557dce7f9429dca8cb5bc5879 upstream.
"rm -rf" is bricking some peoples' laptops because of variables being
used to store non-reinitializable firmware driver data that's required
to POST the hardware.
These are 100% bugs, and they need to be fixed, but in the mean time it
shouldn't be easy to *accidentally* brick machines.
We have to have delete working, and picking which variables do and don't
work for deletion is quite intractable, so instead make everything
immutable by default (except for a whitelist), and make tools that
aren't quite so broad-spectrum unset the immutable flag.
Signed-off-by: Peter Jones <pjones@redhat.com >
Tested-by: Lee, Chun-Yi <jlee@suse.com >
Acked-by: Matthew Garrett <mjg59@coreos.com >
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
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Peter Jones
7b35014c77