Re: efi: make most efivarfs files immutable by default

[Matt Fleming <matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>]

On Mon, 08 Feb, at 02:48:10PM, Peter Jones wrote:
> Hi,
> Here's the latest version of my patch series to make efivarfs make files
> be immutable by default unless they're on our whitelist.  As you might
> expect, this version has a couple of differences from the previous one:
> 
> In patch 2/5:
> - efivar_create_sysfs_entry() was reworked to use the length it computes
>   instead of lots of calls to strlen(), and it doesn't have unused
>   variables any more.
> In 3/5:
> - "len" was renamed to "data_size" for clarity, and we calculate the
>   variable name's size correctly instead now.
> In 4/5:
> - The commit message was reworded based largely on mfleming's suggestions.
> In 5/5:
> - An old comment from a previous version was fixed to not be confusing.
> - the inode lock is now taken when we're modifying inode metadata.

Thanks Peter. I've applied all of these patches to the EFI 'urgent'
branch.

I've got a little more testing to do, but assuming it all goes OK I'll
send a pull request to tip this Friday.