Messages in this thread | | | Subject | Re: [RFC,PATCH v2] efi: Add support for a UEFI variable filesystem | From | Matt Fleming <> | Date | Thu, 06 Sep 2012 15:18:40 +0100 |
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On Thu, 2012-09-06 at 13:40 +0800, Jeremy Kerr wrote: > From: Matthew Garrett <mjg@redhat.com> > > The existing EFI variables code only supports variables of up to 1024 > bytes. This limitation existed in version 0.99 of the EFI specification, > but was removed before any full releases. Since variables can now be > larger than a single page, sysfs isn't the best interface for this. So, > instead, let's add a filesystem. Variables can be read, written and > created, with the first 4 bytes of each variable representing its UEFI > attributes. The create() method doesn't actually commit to flash since > zero-length variables can't exist per-spec. > > Updates from Jeremy Kerr <jeremy.kerr@canonical.com>. > > Signed-off-by: Matthew Garrett <mjg@redhat.com> > Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> > > --- > v2: Add check for < 4-byte writes
Am I correct in thinking that this filesystem doesn't handle deletion of authenticated variables?
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