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Date:      Thu, 17 Aug 2000 09:51:35 +0200
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        Boris Popov <bp@butya.kz>
Cc:        current@freebsd.org
Subject:   Re: Patch test & review: vop_stdaccess() 
Message-ID:  <55370.966498695@critter>
In-Reply-To: Your message of "Thu, 17 Aug 2000 07:54:10 %2B0700." <Pine.BSF.4.10.10008170721550.16090-100000@lion.butya.kz> 

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In message <Pine.BSF.4.10.10008170721550.16090-100000@lion.butya.kz>, Boris Pop
ov writes:
>On Wed, 16 Aug 2000, Poul-Henning Kamp wrote:
>
>> Please test and review this patch:
>> 
>> http://phk.freebsd.dk/patch/vop_stdaccess.patch
>
>	Looks fine to me except vop_stdaccess() itself. Since VREAD,
>VWRITE and VEXEC bits are carefully layed this function can be rewritten
>to use single shift operation instead of 3 'or's:
>
>	if (cred->cr_uid != uid) {
>		amode >>= 3;
>		if (!groupmember(gid, cred))
>			amode >>= 3;
>	}
>	return (fmode & amode) == amode ? 0 : EACCES;

You are right, but such an optimization should be committed as
a the next step.

--
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD coreteam member | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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