Re: [PATCH v9 1/1] efi: a misc char interface for user to update efi firmware

From: Borislav Petkov
Date: Sun Nov 01 2015 - 05:58:23 EST

On Sun, Nov 01, 2015 at 10:52:52AM +0000, Kweh, Hock Leong wrote:
> Could you share me your dumb file? I did perform negative test, but I did
> not get these dump stack in dmesg. Thanks.

I think almost any file works:

cat /bin/ls > /dev/efi_capsule_loader

> > > +#define UPLOAD_DONE -1
> >
> > Isn't the fact that upload was finished a success message? If so, why is it a
> > negative value?
> This is to indicate an upload is done and pending for close(2). If a subsequence
> write(2) perform, return error. Comments inputted by Matt and Andy.

But in that case you can return ERR_OCCURRED. UPLOAD_DONE still doesn't
look like a negative value to me as it signals that the upload was done
and thus successful as no errors happened during the upload.


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