lkml.org 
[lkml]   [2013]   [Mar]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] efivarfs: fix abnormal GUID in variable name by using strcpy to replace null with dash
From
Date
Hi Matt, 

於 四,2013-03-07 於 13:57 +0000,Matt Fleming 提到:
> On Thu, 2013-03-07 at 11:39 +0000, Matt Fleming wrote:
> > On Thu, 2013-03-07 at 18:34 +0800, joeyli wrote:
> > > The VariableNameSize is not reliable when EFI_SUCCESS is returned
> > > because UEFI 2.3.1 spec only mention VariableNameSize should updated
> > > when EFI_BUFFER_TOO_SMALL is returned. And, the 1024 bytes of buffer is
> > > from old UEFI spec. There doesn't have any size condition of variable
> > > data or variable name in 2.3.1 spec.
> >
> > The spec may only mention what happens in the EFI_BUFFER_TOO_SMALL case,
> > but for EFI_SUCCESS, any behaviour other than leaving VariableNameSize
> > alone or updating it with the required size of the buffer is just
> > completely insane.
> >
> > > I modified the patch to grab VariableNameSize when EFI_BUFFER_TOO_SMALL,
> > > the behavior like what we do in efivarfs_file_read().
> >
> > Thanks, this does seem like the most robust solution.
>
> Also, you're probably going to need to update
> efivar_update_sysfs_entries() too.
>

Thanks for your review! I will send out v2 patch after modify and test
on issue machine.


Thanks a lot!
Joey Lee

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2013-03-07 15:43    [W:0.061 / U:2.672 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site