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From: Andy Lutomirski <luto@amacapital.net>
Date: Tue, 21 Apr 2015 18:58:58 -0700
Message-ID: <CALCETrX9GZmWnfkm-CwKW-2mPvRbNcRaY6tUY=8e0THsPBKMcA@mail.gmail.com>
Subject: Re: [PATCH v4 2/2] efi: an sysfs interface for user to update efi firmware
To: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Kweh, Hock Leong" <hock.leong.kweh@intel.com>,
        Matt Fleming <matt@codeblueprint.co.uk>,
        Ming Lei <ming.lei@canonical.com>,
        "Ong, Boon Leong" <boon.leong.ong@intel.com>,
        LKML <linux-kernel@vger.kernel.org>,
        "linux-efi@vger.kernel.org" <linux-efi@vger.kernel.org>,
        Sam Protsenko <semen.protsenko@linaro.org>,
        Peter Jones <pjones@redhat.com>, Roy Franz <roy.franz@linaro.org>,
        Borislav Petkov <bp@alien8.de>
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On Tue, Apr 21, 2015 at 6:21 PM, James Bottomley
<James.Bottomley@hansenpartnership.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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