linux-kernel - Re: [PATCH v4 2/2] efi: an sysfs interface for user to update efi firmware

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Message-ID: <CALCETrX9GZmWnfkm-CwKW-2mPvRbNcRaY6tUY=8e0THsPBKMcA@mail.gmail.com>
Date:	Tue, 21 Apr 2015 18:58:58 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	James Bottomley <James.Bottomley@...senpartnership.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Kweh, Hock Leong" <hock.leong.kweh@...el.com>,
	Matt Fleming <matt@...eblueprint.co.uk>,
	Ming Lei <ming.lei@...onical.com>,
	"Ong, Boon Leong" <boon.leong.ong@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	Sam Protsenko <semen.protsenko@...aro.org>,
	Peter Jones <pjones@...hat.com>,
	Roy Franz <roy.franz@...aro.org>,
	Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH v4 2/2] efi: an sysfs interface for user to update efi firmware

On Tue, Apr 21, 2015 at 6:21 PM, James Bottomley
<James.Bottomley@...senpartnership.com> wrote:
> Andy, just on the misc device idea, what about triggering the capsule
> update from close()?  In theory close returns an error code (not sure if
> most tools actually check this, though).  That means we can do the write
> in chunks but pass it in atomically on the close and cat will work
> (provided it checks the return code of close).

I thought about this but IIRC cat doesn't check the return value from close.

--Andy

>
> James
>
>



-- 
Andy Lutomirski
AMA Capital Management, LLC
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