linux-kernel - Re: [PATCH 3/3] trusted-keys: small cleanup

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Date:	Tue, 18 Jan 2011 06:28:29 -0500
From:	Mimi Zohar <zohar@...ux.vnet.ibm.com>
To:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc:	safford@...son.ibm.com, safford@...ibm.com, jj@...osbits.net,
	dhowells@...hat.com, jmorris@...ei.org, keyrings@...ux-nfs.org,
	linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] trusted-keys: small cleanup

On Tue, 2011-01-18 at 20:03 +0900, Tetsuo Handa wrote:
> Mimi Zohar wrote:
> > > >       va_end(argp);
> > > > -     ret = crypto_shash_final(&sdesc->shash, paramdigest);
> > > > +     if (!ret)
> > > > +             ret = crypto_shash_final(&sdesc->shash, paramdigest);
> > > >       if (!ret)
> > 
> > Change the second '(!ret)' here, the crypto_shash_file() return code
> > test, from '(!ret)' to '(ret < 0)', like the other crypto_shash_file()
> > tests.
> 
> Did you mean changing from
> 
> 	if (!ret)
> 		ret = crypto_shash_final(&sdesc->shash, paramdigest);
> 
> to
> 
> 	if (ret < 0)
> 		ret = crypto_shash_final(&sdesc->shash, paramdigest);
> 
> (i.e. invert the condition)?

Wrong '(!ret)'.  Instead of:
        va_end(argp);
        if (!ret)
                ret = crypto_shash_final(&sdesc->shash, paramdigest);
        if (!ret)

do:
        va_end(argp);
        if (!ret)
                ret = crypto_shash_final(&sdesc->shash, paramdigest);
        if (ret < 0)

> I'm confused. Would you make the patch by yourself?

It's only for consistency, not that important.

thanks,

Mimi


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