From owner-freebsd-fs  Thu Apr 24 17:51:13 1997
Return-Path: <owner-fs>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.5/8.8.5) id RAA13567
          for fs-outgoing; Thu, 24 Apr 1997 17:51:13 -0700 (PDT)
Received: from root.com (implode.root.com [198.145.90.17])
          by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id RAA13555
          for <fs@freebsd.org>; Thu, 24 Apr 1997 17:51:10 -0700 (PDT)
Received: from localhost (localhost [127.0.0.1]) by root.com (8.8.5/8.6.5) with SMTP id RAA12150; Thu, 24 Apr 1997 17:52:41 -0700 (PDT)
Message-Id: <199704250052.RAA12150@root.com>
X-Authentication-Warning: implode.root.com: localhost [127.0.0.1] didn't use HELO protocol
To: Don Lewis <Don.Lewis@tsc.tdk.com>
cc: fs@freebsd.org
Subject: Re: the namei cache... 
In-reply-to: Your message of "Thu, 24 Apr 1997 17:48:12 PDT."
             <199704250048.RAA12907@salsa.gv.tsc.tdk.com> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Thu, 24 Apr 1997 17:52:41 -0700
Sender: owner-fs@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

>On Apr 24,  5:44pm, David Greenman wrote:
>} Subject: Re: the namei cache...
>} >Also, the component name can be terminated with either a NUL or a /.
>} 
>}    Really? That's a surprise if true.
>
>This is right from the source:
>
>	cnp->cn_hash = 0;
>	for (cp = cnp->cn_nameptr; *cp != 0 && *cp != '/'; cp++)
>		cnp->cn_hash += (unsigned char)*cp;
>	cnp->cn_namelen = cp - cnp->cn_nameptr;
>
>It sure looks to me like it stops on '/' ;-)
>
>Also, even if you totally ditch the hash, you still need the loop
>to find the end of the component.

   Good point, although I guess you could always waste a "null" longword at
the end and trigger on that. Hmmm.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project